Android: start a new Activity in onPostExecute() when two strings are equal

Android: start a new Activity in onPostExecute() when two strings are equal - java

I am new to Android development.
I'm trying to create a login with an AsyncTask.
The issue I'm having is that I can't open a new Activity on onPostExecute().
I don't know why, but my app won't run if the if(res=="valid") in postdata. In the log I can see only my response and not my response2.
Here's the code:
public class MainActivity extends Activity {
private EditText employeNum;
private EditText Id;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
employeNum = (EditText) findViewById(R.id.editText1);
Id = (EditText) findViewById(R.id.editText2);
}
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public class MyAsyncTask extends AsyncTask<String, Integer, Double> {
// int loginVerified=0;
public boolean loginVerified = false;
public String res;
protected Double doInBackground(String... params) {
postData(params[0],params[1]);
return null;
}
protected void onPostExecute(boolean loginVerified){
if(loginVerified == true)
{
Intent menu = new Intent(getApplicationContext(),menu.class);
startActivity(menu);
finish();
}
}
public void postData(String a,String b) {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("http://www.nir-levi.com/login/");
try {
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
nameValuePair.add(new BasicNameValuePair("user_email", a));
nameValuePair.add(new BasicNameValuePair("user_password", b));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
HttpResponse response = httpClient.execute(httpPost);
BufferedReader in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = null;
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
res = sb.toString();
if(res=="valid"){
Log.v("My Response2::",res);
loginVerified=true;
onPostExecute(loginVerified);
}
Log.v("My Response::",res);
public void login(View v) {
String num = employeNum.getText().toString();
String id = Id.getText().toString();
new MyAsyncTask().execute(num, id);
}

It should be
if(res.equals("valid")) {
...
}
When using if(res =="valid") you compare the strings by reference. Please, see How do I compare strings in Java?.

you should write:
if ("valid".equals(res)) {
}
Also, you should not call onPostExecute in doInBackground. It will be automatically called when the AsyncTask has finished executing.

The problem is because you are calling onPostExecute() explicitly. You want to return the result from postData in doInBackground() as a boolean value. I have verified that this works.
public class MyAsyncTask extends AsyncTask<String, Integer, Boolean> {
private static final String TAG = "MyAsyncTask";
public boolean loginVerified = false;
public String res;
protected Integer doInBackground(String... params) {
try {
// return the boolean loginVerified
return postData(params[0], params[1]);
} catch (IOException e){
Log.e(TAG, "doInBackground()", e);
return false; // <- return the boolean loginVerified
}
}
protected void onPostExecute(Boolean loginVerified){
if(loginVerified == true) {
Intent menu = new Intent(getApplicationContext(), menu.class);
startActivity(menu);
finish();
}
}
private boolean postData(String a, String b) throws IOException {
URL url = new URL("http://www.nir-levi.com/login/");
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
try {
connection.setRequestMethod(POST);
connection.setRequestProperty(KEY_USER_AGENT, USER_AGENT);
connection.setDoOutput(true);
DataOutputStream urlOutput = new DataOutputStream(connection.getOutputStream());
urlOutput.writeBytes(urlBody);
urlOutput.flush();
urlOutput.close();
int responseCode = connection.getResponseCode();
InputStream in = null;
if (responseCode == 201){ /* Hopefully your server is sending the
proper Http code for a successful
create */
in = connection.getInputStream();
} else {
in = connection.getErrorStream();
}
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
int bytesRead = 0;
byte[] buffer = new byte[1024];
while ((bytesRead = in.read(buffer)) > 0) {
byteArrayOut.write(buffer, 0, bytesRead);
}
byteArrayOut.close();
res = new String(byteArrayOut.toByteArray();
Log.v(TAG, "res = " + res);
return (res.compareTo("valid") == 0); // <- return from postData
} catch (FileNotFoundException e){
Log.e(TAG, "Error: " + connection.getResponseCode(), e);
return false;
} finally {
connection.disconnect();
}
}
public void login(View v) {
String num = employeNum.getText().toString();
String id = Id.getText().toString();
new MyAsyncTask().execute(num, id);
}

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Put row of data from back-end service into ListView

Before trying to get a row of data from a MySQL server, I used a column and managed to get that into a listView through tutorials. But for getting data in a row from a table, I couldn't manage to put it into a listView.
So what I'm trying to do is put "shift" from background worker into a listview.
PHP SQL query:
$sql = "SELECT id, employee, hours FROM selected_shifts WHERE day = '$day';";
Navigation drawer from Main Activity:
if (items[0].equals(mExpandableListTitle.get(groupPosition))) {
if (items[0].equals(mExpandableListTitle.get(childPosition))) {
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OnChoice(day);
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public void OnChoice(String day) {
String type = "choice";
BackgroundWorker backgroundWorker = new BackgroundWorker(this);
backgroundWorker.execute(type, day);
}
Background worker(getting data from MySQL server):
public class BackgroundWorker extends AsyncTask<String,Void,String> {
Context context;
AlertDialog alertDialog;
BackgroundWorker (Context ctx) {
context = ctx;
}
#Override
protected String doInBackground(String... params) {
String type = params[0];
String shifts_url = "***PHP LINK***";
if(type.equals("choice")) {
try {
String day = params[1];
URL url = new URL(shifts_url);
HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
String post_data = URLEncoder.encode("day","UTF-8")+"="+URLEncoder.encode(day,"UTF-8");
bufferedWriter.write(post_data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
String shift="";
String line="";
while((line = bufferedReader.readLine())!= null) {
shift += line;
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return shift;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
#Override
protected void onPreExecute() {
alertDialog = new AlertDialog.Builder(context).create();
alertDialog.setTitle("Status");
}
#Override
protected void onPostExecute(String shift) {
//Toast the data as json
Toast.makeText(context, shift, Toast.LENGTH_LONG).show();
}
#Override
protected void onProgressUpdate(Void... values)
{
super.onProgressUpdate(values);
}
}
EDIT
Putting it into ListView:
public void onTaskCompleted(String shift) {
try {
loadIntoListView(shift);
} catch (JSONException e) {
e.printStackTrace();
}
}
private void loadIntoListView(String shift) throws JSONException {
JSONArray jsonArray = new JSONArray(shift);
String[] list = new String[jsonArray.length()];
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject obj = jsonArray.getJSONObject(i);
list[i] = obj.getString(shift);
}
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
listView.setAdapter(arrayAdapter);
}

So what you want to do to pass the shift back is use a custom "Listener".
Create this
public interface TaskListener {
void onTaskCompleted(String shift);
}
And on your BackgroundWorker change the constructor as follow:
TaskListener taskListener;
BackgroundWorker(Context context, TaskListener taskListener){
this.context = context;
this.taskListener = taskListener;
}
Then on the onPostExecute method, do a taskListener.onTaskCompleted(shift).
When you call the BackgroundWorker constructor pass this as the second parameter:
BackgroundWorker backgroundWorker = new BackgroundWorker(this, this)
Then implement TaskListener on your Main and implement the method.
Something like this:
... MainActivity implements TaskListener
...
#override
onTaskCompleted(String shift) {
// You have your `shift` here to do with as you please
}

At your onPostExecute() you should add the "shift" to a dataSet in your adapter.

how to make response method and call it in main class

I want to access html from the server using API for that i want to make a method in the response, that method i want to use it in main class.I am using webview to show the output result in webview.Following code I am using.
public class Dashboard_Description__page extends AppCompatActivity {
ImageButton reader_back;
ArrayList<Reader_Model> actorsList;
String addCat;
ActorAdapter adapter;
WebView webView;
String alternate_id;
String bookmarkid;
String bookmarkfile;
private String webData;
String mimeType = "text/html";
String encoding = "utf-8";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dashboard__description__page);
WebView webView = (WebView) findViewById(R.id.webview);
// String summary = "<html><body>You scored <b>192</b> points.</body></html>";
webView.loadData(getWebData(), "text/html", null);
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if(extras == null) {
alternate_id= null;
bookmarkid= null;
bookmarkfile = null;
} else {
alternate_id= extras.getString("alternateid");
bookmarkid= extras.getString("bookmarkid");
bookmarkfile = extras.getString("bookmarkfile");
}
} else {
alternate_id= (String) savedInstanceState.getSerializable("alternateid");
bookmarkid= (String) savedInstanceState.getSerializable("bookmarkid");
bookmarkfile= (String) savedInstanceState.getSerializable("bookmarkfile");
}
webView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
// System.out.println(stringCameFromFirstAcvitity);
// actorsList = new ArrayList<Actors>();
new JSONReaderAsyncTask().execute("https://www.webo.com/secure-mobile/get_article_detail?", " access_token","bookmark_file","alternate_id","bookmarkId");
reader_back=(ImageButton)
findViewById(R.id.reader_back_btn);
reader_back.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick (View v) {
Intent dash_back = new Intent(getApplicationContext(),Dashboard.class);
startActivity(dash_back);
}
});
}
public String getWebData() {
return webData;
}
public void setWebData(String data) {
this.webData = data;
}
class JSONReaderAsyncTask extends AsyncTask<String, Void, Boolean> {
ProgressDialog dialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(Dashboard_Description__page.this);
dialog.setMessage("Loading, please wait");
dialog.setTitle("Connecting server");
dialog.show();
dialog.setCancelable(false);
}
#Override
protected Boolean doInBackground(String... params)
{
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, 5000);
HttpConnectionParams.setSoTimeout(httpParameters, 5000);
HttpClient httpClient = new DefaultHttpClient(httpParameters);
HttpPost httpPost = new HttpPost(params[0]);
String jsonResult = "";
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
nameValuePairs.add(new BasicNameValuePair("access_token", "94529e5dbc6234fc3bbfce7406b8dde9"));
nameValuePairs.add(new BasicNameValuePair("bookmark_file", bookmarkfile));
nameValuePairs.add(new BasicNameValuePair("alternate_id", alternate_id));
nameValuePairs.add(new BasicNameValuePair("bookmarkId", bookmarkid));
// System.out.println(alternate_id);
//System.out.println(bookmarkfile);
// System.out.println(bookmarkid);
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
// System.out.println("hello Hitu");
// jsonResult = inputStreamToString(response.getEntity().getContent()).toString();
// System.out.println(jsonResult);
// StatusLine stat = response.getStatusLine();
int status = 200;
if (status == 200) {
HttpEntity entity = response.getEntity();
String data = EntityUtils.toString(entity);
// ArrayList<String> mylist = new ArrayList<String>();
// mylist.add(data);
// System.out.println(first);
System.out.println(data);
System.out.println("fffff");
//here result is coming from the server. I want here a method which can be used in main class.I want to view this result in html form using webview.
// JSONObject jsono = new JSONObject(data);
// JSONArray jarray = jsono.getJSONArray("content");
}
return true;
//------------------>>
} catch (ParseException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return false;
}
protected void onPostExecute(Boolean result) {
dialog.cancel();
// adapter.notifyDataSetChanged();
if(result == false)
Toast.makeText(getApplicationContext(), "Unable to fetch data from server", Toast.LENGTH_LONG).show();
}
}
}

public class HttpClientWrapper {
public static String post(String requestUrl,String postValues) {
URL url;
String response = "";
try {
url = new URL(requestUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(15000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);// Specifies whether this URLConnection allows receiving data.
conn.setDoOutput(true);// Specifies whether this URLConnection allows sending data.
conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
conn.setRequestProperty("Accept", "application/json; charset=utf-8");
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(postValues);
writer.flush();
writer.close();
os.close();
int responseCode=conn.getResponseCode();
if (responseCode == HttpsURLConnection.HTTP_OK) {
String line="";
BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream(),"UTF-8"));
StringBuilder sb = new StringBuilder();
while ((line=br.readLine()) != null) {
sb.append(line+"\n");
response = sb.toString().substring(0, sb.toString().length() - 1);
}
}
else {
response="";
}
} catch (Exception e) {
e.printStackTrace();
}
return response;
}
public static String getResponseGET(String url) {
String response = "";
HttpURLConnection c = null;
try {
URL u = new URL(url);
c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setConnectTimeout(15000);
c.setReadTimeout(15000);
c.connect();
int status = c.getResponseCode();
switch (status) {
case 200:
case 201:
BufferedReader br = new BufferedReader(new InputStreamReader(c.getInputStream()));
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
sb.append(line+"\n");
response = sb.toString().substring(0, sb.toString().length() - 1);
}
br.close();
return response;
}
} catch (IOException ex) {
if (c != null) {
c.disconnect();
}
} finally {
if (c != null) {
try {
c.disconnect();
} catch (Exception ex) {
}
}
}
return null;
}
}

private class RegistrationAsyncTask extends AsyncTask<Void, Void, String> {
ProgressDialog dialog;
Context mContext;
String error;
String response;
String mData;
public RegistrationAsyncTask(Context context,String data) {
this.mContext = context;
this.error = "";
this.mData = data;
}
#Override
protected void onPreExecute() {
dialog = new ProgressDialog(mContext);
dialog.setTitle("Registration");
dialog.setMessage("Registration in process...");
dialog.setCancelable(false);
dialog.show();
}
#Override
protected String doInBackground(Void... params) {
try {
response = HttpClientWrapper.post(URL.URL_REGISTRATION, mData);
Log.e(TAG, "Response: " + response);
} catch (Exception e) {
e.printStackTrace();
this.error = e.getMessage();
}
return response;
}
#Override
protected void onPostExecute(String result) {
Log.e(TAG, "result: " + response);
if (dialog.isShowing()) {
dialog.dismiss();
}
if (response.isEmpty()){
Utils.message(getActivity(), getResources().getString(R.string.error_server));
return;
}
try {
JSONObject jsonObject = new JSONObject(result);
if (jsonObject.has("error")) {
String error = jsonObject.getString("error");
JSONObject jsonObject1 = new JSONObject(error);
String message = jsonObject1.getString("message");
Utils.showDialog(mContext, alert, alertDialog, getResources().getString(R.string.text_title_reg),message);
return;
} else {
String error = jsonObject.getString("success");
JSONObject jsonObject1 = new JSONObject(error);
String message = jsonObject1.getString("message");
alert = new AlertDialog.Builder(getActivity());
alert.setTitle(R.string.text_title_reg);
alert.setMessage(message);
alert.setCancelable(false);
alert.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog,
int whichButton) {
clearForm();
dialog.dismiss();
}
});
alertDialog = alert.create();
alertDialog.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}

How i can know if the conection to server is correct or not?

I make a login but i need know when the conection to server is fail
,this is my event of button
login.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
usuario=(EditText)findViewById(R.id.etUsuario);
contrasena=(EditText)findViewById(R.id.etContrasena);
usuario_ws = usuario.getText().toString();
pass_ws = contrasena.getText().toString();
new HttpAsyncTask().execute(GET());
}
});
and this is my asynctask for the response of my server
private class HttpAsyncTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
return GET();
}
// onPostExecute displays the results of the AsyncTask.
#Override
protected void onPostExecute(String result) {
// Toast.makeText(getBaseContext(), "Received!", Toast.LENGTH_LONG).show();
// etResponse.setText(result);
Integer respuesta_ws = Integer.valueOf(result);
if (respuesta_ws>=1){
sesionIn();
}
else if (respuesta_ws==0){
sesionFail();
}
}
}
public String GET() {
String url = "http://"+ippref+":8080/WSAppInventario/webresources/inventario.users/Login/"+usuario_ws+"/"+pass_ws+"";
String result = "";
BufferedReader inStream = null;
try {
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpRequest = new HttpGet(url);
HttpResponse response = httpClient.execute(httpRequest);
inStream = new BufferedReader(
new InputStreamReader(
response.getEntity().getContent()));
StringBuffer buffer = new StringBuffer();
String line = "";
//String NL = System.getProperty("line.separator");
while ((line = inStream.readLine()) != null) {
buffer.append(line);
}
inStream.close();
result = buffer.toString();
respuesta_ws = Integer.valueOf(result);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
The string ippref
It is an object to keep before SharedPreferences

this should work
private class HttpAsyncTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
return GET();
}
// onPostExecute displays the results of the AsyncTask.
#Override
protected void onPostExecute(String result) {
// Toast.makeText(getBaseContext(), "Received!", Toast.LENGTH_LONG).show();
// etResponse.setText(result);
if (result=="failed"){
sesionFail();
}
else{
sesionIn();
}
}
}
public String GET() {
String url = "http://"+ippref+":8080/WSAppInventario/webresources/inventario.users/Login/"+usuario_ws+"/"+pass_ws+"";
String result = "";
BufferedReader inStream = null;
try {
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpRequest = new HttpGet(url);
HttpResponse response = httpClient.execute(httpRequest);
inStream = new BufferedReader(
new InputStreamReader(
response.getEntity().getContent()));
StringBuffer buffer = new StringBuffer();
String line = "";
//String NL = System.getProperty("line.separator");
while ((line = inStream.readLine()) != null) {
buffer.append(line);
}
inStream.close();
result = buffer.toString();
respuesta_ws = Integer.valueOf(result);
} catch (Exception e) {
e.printStackTrace();
return "failed";
}
return result;
}

Splash Screen activity runs twice

So basically this is the class that starts at the launch of the app and it shows a splashscreen while getting a serverList from a server, once it has the list, it starts the next activity, the problem is that this activity seems to be getting called twice before the next activity is started, what could be causing that?
public class SplashScreen extends Activity {
public static DefaultHttpClient httpClient;
private String resp;
static String res;
private String errorMsg;
final Context context = this;
public static String cookieValue;
public static Cookie cookie;
String now_playing, earned;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_splash_screen);
String Wlcclient = "Yes";
String ClientType = "Android";
String Version = "0.103";
new PrefetchData().execute(Wlcclient,ClientType,Version);
}
public static String executeHttpPost(String url, ArrayList<NameValuePair> postParameters) throws Exception {
BufferedReader in = null;
try {
SplashScreen.httpClient = new DefaultHttpClient();
HttpPost request = new HttpPost(url);
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
request.setEntity(formEntity);
HttpResponse response = SplashScreen.httpClient.execute(request);
List<Cookie> cookies = SplashScreen.httpClient.getCookieStore().getCookies();
cookie = cookies.get(0);
cookieValue = "ASPSESSIONIDCQTCRACT=" + cookie.getValue();
System.out.println("COOK" + cookieValue);
Header[] headers = response.getAllHeaders();
System.out.println("length" + headers.length);
for (int i=0; i < headers.length; i++) {
Header h = headers[i];
System.out.println( "Header names: "+h.getName());
System.out.println( "Header Value: "+h.getValue());
}
CookieManager cookieManager = CookieManager.getInstance();
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
String result = sb.toString();
return result;
}
finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public class PrefetchData extends AsyncTask<String,Void,String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// before making http calls
}
#Override
protected String doInBackground(String... params) {
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("WlcClient",
params[0])); // params[0] contains the first value that you have passed and params[1] second value.
postParameters.add(new BasicNameValuePair("ClientType",
params[1]));
postParameters.add(new BasicNameValuePair("Version",
params[2]));
String response = null;
try {
response =
executeHttpPost(server,
postParameters);
res = response.toString();
resp = res.replaceAll("\\s+", "");
System.out.println(res);
//resultt =res;
return res;
} catch (Exception e) {
e.printStackTrace();
errorMsg = e.getMessage();
}
return res;
} // end of doInBackground
protected void onPostExecute(String result) {
super.onPostExecute(result);
// After completing http call
// will close this activity and lauch main activity
Intent i = new Intent(SplashScreen.this, LoginLayout.class);
startActivity(i);
// close this activity
finish();
}
}
}

inside onCreate() of SplashScreenActivity
I've replaced finish() with onDestroy() after startActivity(intent)
public class SplashScreenActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
new Handler(Looper.getMainLooper()).postDelayed(new Runnable(){
#Override
public void run() {
Intent intent;
intent = new Intent(SplashScreenActivity.this,MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
//here we call the onDestory instead of finish()
onDestroy();
}
}, 1000);
}
}
worked for me

JSON parsing android

I need advice about my code.
I'm trying to parse a JSON array generated by the PHP function json_encode().
My json:
{"data": [{"streamer":"froggen","yt_length":"25078"},{"streamer":"wingsofdeath","yt_length":"8979"},{"streamer":"guardsmanbob","yt_length":"4790"},{"streamer":"kaostv","yt_length":"4626"},{"streamer":"kungentv","yt_length":"3883"},{"streamer":"destiny","yt_length":"3715"},{"streamer":"zekent","yt_length":"3428"},{"streamer":"athenelive","yt_length":"1673"},{"streamer":"frommaplestreet","yt_length":"1614"},{"streamer":"keyorikeys","yt_length":"1410"},{"streamer":"riotgamesturkish","yt_length":"1397"},{"streamer":"vman7","yt_length":"1022"},{"streamer":"tiensinoakuma","yt_length":"967"},{"streamer":"affenklappe","yt_length":"748"},{"streamer":"teamkeyd","yt_length":"747"},{"streamer":"lagtvmaximusblack","yt_length":"683"},{"streamer":"lolgameru","yt_length":"665"},{"streamer":"gruntartv","yt_length":"585"},{"streamer":"entenzwerg","yt_length":"579"},{"streamer":"lolgameru_cauthonpro","yt_length":"506"},{"streamer":"basickz","yt_length":"488"},{"streamer":"ilysuiteheart","yt_length":"491"},{"streamer":"kireiautumn","yt_length":"485"},{"streamer":"ultimavv","yt_length":"471"}]}
Java class:
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
String response = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet httpPost = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
And my activity:
public class AndroidJSONParsingActivity extends ListActivity {
// url to make request
private static String url = "http://ololo.tv/vasa";
// JSON Node names
private static final String TAG_DATA = "data";
private static final String TAG_STREAMER = "streamer";
private static final String TAG_VIEWERS = "yt_length";
// contacts JSONArray
JSONArray data = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Hashmap for ListView
ArrayList<HashMap<String, String>> dataList = new ArrayList<HashMap<String, String>>();
// Creating JSON Parser instance
JSONParser Parser = new JSONParser();
// getting JSON string from URL
JSONObject json = null;
json = Parser.getJSONFromUrl(url);
try {
// Getting Array of Contacts
data = json.getJSONArray(TAG_DATA);
// looping through All Contacts
for(int i = 0; i < data.length(); i++){
JSONObject c = data.getJSONObject(i);
// Storing each json item in variable
String streamer = c.getString(TAG_STREAMER);
String viewers = c.getString(TAG_VIEWERS);
//String link = c.getString();
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_STREAMER, streamer);
map.put(TAG_VIEWERS, viewers);
//map.put(TAG_URL, link);
// adding HashList to ArrayList
dataList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(this, dataList,
R.layout.list_item,
new String[] { TAG_STREAMER, TAG_VIEWERS /*TAG_URL*/ }, new int[] {
R.id.streamer, R.id.viewers /*R.id.url*/ });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
// Launching new screen on Selecting Single ListItem
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.streamer)).getText().toString();
String viewers_count = ((TextView) view.findViewById(R.id.viewers)).getText().toString();
//String url = ((TextView) view.findViewById(R.id.url)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(TAG_STREAMER, name);
in.putExtra(TAG_VIEWERS, viewers_count);
//in.putExtra(TAG_PHONE_MOBILE, url);
startActivity(in);
}
});
}
}
I tried using breakpoints, and see that when I put a breakpoint after GetEntity, the program doesn't get there because it crashed early, or something.
This my async task.
public class ParsingTask extends AsyncTask<String, Void, Void>{
JSONParser Parser = new JSONParser();
protected Void doInBackground(String... urls) {
ArrayList<HashMap<String, String>> dataList = new ArrayList<HashMap<String, String>>();
JSONObject json = Parser.getJSONFromUrl(url);
try {
// Getting Array of Contacts
data = json.getJSONArray(TAG_DATA);
// looping through All Contacts
for(int i = 0; i < data.length(); i++){
JSONObject c = data.getJSONObject(i);
// Storing each json item in variable
String streamer = c.getString(TAG_STREAMER);
String viewers = c.getString(TAG_VIEWERS);
//String link = c.getString();
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_STREAMER, streamer);
map.put(TAG_VIEWERS, viewers);
//map.put(TAG_URL, link);
// adding HashList to ArrayList
dataList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(this, dataList,
R.layout.list_item,
new String[] { TAG_STREAMER, TAG_VIEWERS /*TAG_URL*/ }, new int[] {
R.id.streamer, R.id.viewers /*R.id.url*/ });
setListAdapter(adapter);
return null;
}
protected void onProgressUpdate() {
}
protected void onPostExecute() {
}
}
ListAdapter error, seems like something wrong in "this". This my version how cut off code, where it stop return variables. Sorry for bad english, but i hope you understand me :)
Add my php json maker. Mb problem there?!
<?php
mysql_connect("localhost","root","");
if (!mysql_select_db("ololo")) {
echo "Unable to select ololo: " . mysql_error();
}
$sql=mysql_query("select streamer, yt_length from pm_videos where category='1'");
if(!$sql) exit("Error - ".mysql_error().", ".$tmp_q);
while($row=mysql_fetch_assoc($sql)){
$output[]=$row;
}
$json = json_encode($output);
header('Content-Type: application/json');
print "{\"data\": ${json}}";
mysql_close();
?>

You programm crashes because you are running
json = Parser.getJSONFromUrl(url);
in the UI Thread context. You have to use an AsyncTask
Code looks good. The only problem is that
public class ParsingTask extends AsyncTask<String, Void, ArrayList<HashMap<String, String>>>{
JSONParser Parser = new JSONParser();
protected Void doInBackground(String... urls) {
ArrayList<HashMap<String, String>> dataList = new ArrayList<HashMap<String, String>>();
JSONObject json = Parser.getJSONFromUrl(url);
try {
// Getting Array of Contacts
data = json.getJSONArray(TAG_DATA);
// looping through All Contacts
for(int i = 0; i < data.length(); i++){
JSONObject c = data.getJSONObject(i);
// Storing each json item in variable
String streamer = c.getString(TAG_STREAMER);
String viewers = c.getString(TAG_VIEWERS);
//String link = c.getString();
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_STREAMER, streamer);
map.put(TAG_VIEWERS, viewers);
//map.put(TAG_URL, link);
// adding HashList to ArrayList
dataList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
/**
* Updating parsed JSON data into ListView
* */
return dataList;
}
protected void onPostExecute(ArrayList<HashMap<String, String>> dataList) {
ListAdapter adapter = new SimpleAdapter(AndroidJSONParsingActivity.this, dataList,
R.layout.list_item,
new String[] { TAG_STREAMER, TAG_VIEWERS /*TAG_URL*/ }, new int[] {
R.id.streamer, R.id.viewers /*R.id.url*/ });
setListAdapter(adapter);
}

Have you heard about gson (docs)?
public static final class Content {
#SerializedName("streamer") // you don't need to specify this, JFYI
String streamer;
#SerializedName("yt_length") // you don't need to specify this, JFYI
String yt_length;
}
public static final class Data {
#SerializedName("data")
List<Content> data;
}
public static void main (String[] args) {
Gson gson = new GsonBuilder().create();
Data data = gson.fromJson(jsonString, Data.class);
}
And remember, you cannot call network operations on UI thread! this is reason of what you have for now.

json data
[
-{
Cat_Id: 21
Cat_Title: "Electronics"
Cat_Description: null
Cat_Status: 0
Cat_CreatedBy: 0
Cat_CreatedDate: "0001-01-01T00:00:00"
Cat_UpdatedBy: 0
Cat_UpdatedDate: "0001-01-01T00:00:00"
}
Category class
public class Category {
public int Cat_Id;
public String Cat_Title = null;;
public Category() {
}
public int getCat_Id() {
return Cat_Id;
}
public void setCat_Id(int Cat_Id) {
this.Cat_Id = Cat_Id;
}
}
BaseActivity
public class BaseActivity extends Activity {
public ProgressDialog progressDialog;
public SharedPreferences prefs;
public JSONObject jsonObject;
public JSONObject jsonObject1;
public static String pref_setting = "Category_setting";
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// TODO Auto-generated method stub
progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Loading..");
prefs = PreferenceManager.getDefaultSharedPreferences(this);
Preferences.AppContext = this;
}
protected void onStop() {
super.onStop();
if (progressDialog != null && progressDialog.isShowing()) {
progressDialog.dismiss();
}
}
}
Soap
public class Soap {
// public static String BaseURL = "";
public static String BaseURL = "";
public static String imgURL = "";
public static String getSoapResponseByGet(String postFixOfUrl)
throws ClientProtocolException, IOException {
if (Preferences.AppContext != null
&& Preferences.isOnline(Preferences.AppContext)) {
HttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet(BaseURL + postFixOfUrl);
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
String xmlString = EntityUtils.toString(entity);
return xmlString.toString();
} else {
return "{\"error\":{\"no_internet\":\"No internet connection\"}}";
}
}
public static String getSoapResponse(String postFixOfUrl)
throws ClientProtocolException, IOException {
if (Preferences.AppContext != null
&& Preferences.isOnline(Preferences.AppContext)) {
HttpPost httpPost = new HttpPost(BaseURL + postFixOfUrl);
StringEntity se = new StringEntity("", HTTP.UTF_8);
se.setContentType("text/xml");
httpPost.setHeader("Content-Type", "text/xml;charset=utf-8");
httpPost.setEntity(se);
HttpClient httpClient = new DefaultHttpClient();
BasicHttpResponse httpResponse = (BasicHttpResponse) httpClient
.execute(httpPost);
HttpEntity r_Entity = httpResponse.getEntity();
String xmlString = EntityUtils.toString(r_Entity);
return xmlString.toString();
} else {
return "{\"error\":{\"no_internet\":\"No internet connection\"}}";
}
}
public static String getSoapResponseByPost(String postFixOfUrl,
ArrayList<NameValuePair> nameValuePairs)
throws ClientProtocolException, IOException {
if (Preferences.AppContext != null
&& Preferences.isOnline(Preferences.AppContext)) {
HttpPost httpPost = new HttpPost(BaseURL + postFixOfUrl);
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF-8"));
HttpClient httpClient = new DefaultHttpClient();
BasicHttpResponse httpResponse = (BasicHttpResponse) httpClient
.execute(httpPost);
HttpEntity r_Entity = httpResponse.getEntity();
String xmlString = EntityUtils.toString(r_Entity);
return xmlString.toString();
} else {
return "{\"error\":{\"no_internet\":\"No internet connection\"}}";
}
}
// ////////// api for Category //////////////
http://sharafdg.digitarabia.com/sharafdg/api/Category
public static String apiGetCategory() throws ClientProtocolException,
IOException {
String result = Soap.getSoapResponseByGet("api/Category");
Log.e("SOAP", result);
return result;
}
public static String apiGetstore(int catid, int brandid, int modelid,
String variant) throws ClientProtocolException, IOException {
String result = Soap.getSoapResponseByGet("api/stores/?catid=" + catid
+ "&brandid=" + brandid + "&modelid=" + modelid + "&variant="
+ variant);
Log.e("SOAPSTORE", "api/stores/?catid=" + catid);
Log.e("SOAPSTORE", "api/stores/?&brandid=" + brandid);
Log.e("SOAPSTORE", "api/stores/?&modelid=" + modelid);
Log.e("SOAPSTORE", "api/stores/?&variant=" + variant);
return result;
}
-------------- post method hoy to -----------------
http://kallapp.madword-media.co.uk/company.php?category_id=11
http://kallapp.madword-media.co.uk/categories.php
public static String apiGetCategory() throws ClientProtocolException,
IOException {
ArrayList<NameValuePair> alNameValuePairs = new
ArrayList<NameValuePair>();
String result = Soap.getSoapResponseByPost("categories.php",
alNameValuePairs);
return result;
}
public static String apiGetcompanies(String category_id)
throws ClientProtocolException, IOException {
ArrayList<NameValuePair> alNameValuePairs = new
ArrayList<NameValuePair>();
// NameValuePair nameValuePairs = new BasicNameValuePair("",
// category_id);
// alNameValuePairs.add(nameValuePairs);
String result = Soap.getSoapResponse("company.php?category_id="
+ category_id);
Log.e("SOAP", result);
return result;
}
public static String apiGetDepaName(String category_id, String
company_id)
throws ClientProtocolException, IOException {
ArrayList<NameValuePair> alNameValuePairs = new
ArrayList<NameValuePair>();
NameValuePair nameValuePair = new BasicNameValuePair("category_id",
category_id);
alNameValuePairs.add(nameValuePair);
nameValuePair = new BasicNameValuePair("company_id", company_id);
alNameValuePairs.add(nameValuePair);
String result =
Soap.getSoapResponseByPost("department.php?",alNameValuePairs);
return result;
}
Category_list
public class Category_list extends BaseActivity {
int currentCategoryid;
private ArrayList<Category> cat = new ArrayList<Category>();
ArrayList<String> list = new ArrayList<String>();
Spinner spinner;
Button btncompare;
private int catid;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// TODO Auto-generated method stub
setContentView(R.layout.activity_webservices);
spinner = (Spinner) findViewById(R.id.spinner);
btncompare = (Button) findViewById(R.id.btncompare);
spinner.setOnItemSelectedListener(new OnItemSelected());
new getCategoryTask().execute();
btncompare.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(getBaseContext(), Store.class);
intent.putExtra("catid", catid);
startActivity(intent);
}
});
}
public class OnItemSelected implements OnItemSelectedListener {
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// ((TextView) arg0.getChildAt(0)).setTextColor(Color.GREEN);
catid = cat.get(arg2).Cat_Id;
String cateid = String.valueOf(catid);
Log.e("cateid_category", cateid);
// new getBrandTask().execute();
}
public void onNothingSelected(AdapterView<?> arg0) {
}
}
private class getCategoryTask extends AsyncTask<Void, Void, Void> {
Category category;
String categoryJsonStr;
public getCategoryTask() {
category = new Category();
}
protected void onPreExecute() {
super.onPreExecute();
// progressDialog.show();
}
#Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
-----------------------admin email-pass-------------
JSONObject jsonObject = new JSONObject(userJsonStr);//
jsonUserArray.getJSONObject(i);
currentUserid = jsonObject.getInt("Use_Id");
if (currentUserid > 0) {
if (!jsonObject.isNull("Use_Id")) {
id = jsonObject.getInt("Use_Id");
}
}
--------------------kallapp---------
try {
Log.i("categoryJsonStr", categoryJsonStr);
JSONObject jsonObject = new JSONObject(categoryJsonStr);
JSONArray jsonCatArray = jsonObject.getJSONArray("categories");
for (int i = 0; i < jsonCatArray.length(); i++) {
Category objcategory = new Category();
jsonObject = jsonCatArray.getJSONObject(i);
--------------------------------------------------------------
try {
// categoryJsonStr = Soap.apiGetCategory();
Log.e("categoryJsonStr", categoryJsonStr);
JSONArray jsonCatArray = new JSONArray(categoryJsonStr);
Category category = new Category();
// category.Cat_Id = -1;
category.Cat_Title = "Select Category";
cat.add(category);
list.add(category.Cat_Title);
for (int i = 0; i < jsonCatArray.length(); i++) {
Category objcategory = new Category();
JSONObject jsonObject = jsonCatArray.getJSONObject(i);
currentCategoryid = jsonObject.getInt("Cat_Id");
if (!jsonObject.isNull("Cat_Title")) {
objcategory.setCat_Title(jsonObject
.getString("Cat_Title"));
}
if (!jsonObject.isNull("Cat_Id")) {
objcategory.setCat_Id(jsonObject.getInt("Cat_Id"));
}
cat.add(objcategory);
list.add(objcategory.Cat_Title);
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
return null;
}
public void onPostExecute(Void result) {
super.onPostExecute(result);
// progressDialog.dismiss();
spinner.setAdapter(new ArrayAdapter<String>(Category_list.this,
android.R.layout.simple_spinner_item, list));
spinner.setSelection(0, true);
}
}
}
-------------more than one item fill--------
store_lists.add(objStore_list);
public void onPostExecute(Void result) {
super.onPostExecute(result);
store_adapter = new Store_adapter(Store.this, store_lists);
lv_store.setAdapter(store_adapter);
store_adapter.notifyDataSetChanged();
}
Preferences
public class Preferences {
public static Context AppContext = null;
public static String categoryid;
public static boolean isOnline(Context c) {
ConnectivityManager cm = (ConnectivityManager) c
.getSystemService(Context.CONNECTIVITY_SERVICE);
return cm.getActiveNetworkInfo() != null
&& cm.getActiveNetworkInfo().isConnectedOrConnecting();
}
}
Store_adapter
private Context mContext;
private int ImageCount;
private ArrayList<Store_list> store_lists = new ArrayList<Store_list>();
public ImageLoader imageLoader;
ImageView imgsave, imgpackage, img_up_arrow, img_dun_arrow;
TextView txtsave;
RelativeLayout relatv;
public Store_adapter(Context c, ArrayList<Store_list> store_lists) {
mContext = c;
this.store_lists = store_lists;
this.ImageCount = store_lists.size();
imageLoader = new ImageLoader(c);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
// ImageCount = store_lists.size();
return this.ImageCount;
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
this.ImageCount = store_lists.size();
}
public void remove(int position) {
store_lists.remove(position);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View vi = inflater.inflate(R.layout.storelist, parent, false);
TextView name = (TextView) vi.findViewById(R.id.txtprise);
ImageView imgview = (ImageView) vi.findViewById(R.id.imgve);
Store_list list = store_lists.get(position);
imageLoader.DisplayImage(list.Store_logo, imgview);
name.setText(String.valueOf(list.Mod_Price));
return vi;
}
}
menifestfile
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"
/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
/>

public static String getSoapResponse(String postFixOfUrl) {
try {
if (General.AppContext != null
&& General.isOnline(General.AppContext)) {
HttpGet httpget = new HttpGet(BaseURL + postFixOfUrl);
Log.i("SOAP", "URI:" + BaseURL + postFixOfUrl);
httpget.setHeader("Content-Type",
"application/json;charset=utf-8");
HttpClient httpclient = new DefaultHttpClient();
BasicHttpResponse httpResponse = (BasicHttpResponse) httpclient
.execute(httpget);
HttpEntity r_entity = httpResponse.getEntity();
String xmlString = EntityUtils.toString(r_entity);
return xmlString.toString();
} else {
// return
// "[{\"erorr\":{\"no_internet\":\"No internet connection\"}}]";
if (General.AppActivity != null) {
General.AppActivity.runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(
General.AppContext,
General.AppContext
.getResources()
.getString(
R.string.no_internet_connection),
Toast.LENGTH_SHORT).show();
}
});
}
return null;
}
} catch (Exception e) {
HandleException.catchException(e, true);
}
return null;
}
// post method
public static String getSoapResponseByPost(String postFixOfUrl,
ArrayList<NameValuePair> nameValuePairs)
throws ClientProtocolException, IOException {
try {
if (General.AppContext != null
&& General.isOnline(General.AppContext)) {
HttpPost httppost = new HttpPost(BaseURL + postFixOfUrl);
Log.i("SOAP", "URI:" + BaseURL + postFixOfUrl);
// httppost.setHeader("Content-Type",
// "text/html;charset=utf-8");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs,
"UTF-8"));
HttpClient httpclient = new DefaultHttpClient();
BasicHttpResponse httpResponse = (BasicHttpResponse) httpclient
.execute(httppost);
HttpEntity r_entity = httpResponse.getEntity();
String xmlString = EntityUtils.toString(r_entity);
return xmlString.toString();
} else {
// return
// "[{\"erorr\":{\"no_internet\":\"No internet connection\"}}]";
if (General.AppActivity != null) {
General.AppActivity.runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(
General.AppContext,
General.AppContext
.getResources()
.getString(
R.string.no_internet_connection),
Toast.LENGTH_SHORT).show();
}
});
}
return null;
}
} catch (Exception e) {
HandleException.catchException(e, true);
}
return null;
}
public static String getSoapResponseForImage(String postFixOfUrl,
List<NameValuePair> nameValuePairs,
List<NameValuePair> filenameValuePairs) {
String xmlString = null;
HttpClient httpClient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();
HttpPost httpPost = new HttpPost(BaseURL + postFixOfUrl);
try {
MultipartEntity entity = new MultipartEntity();
for (int index = 0; index < filenameValuePairs.size(); index++) {
File myFile = new File(filenameValuePairs.get(index).getValue());
if (myFile.exists()) {
FileBody fileBody = new FileBody(myFile);
entity.addPart(filenameValuePairs.get(index).getName(),
fileBody);
}
}
for (int index = 0; index < nameValuePairs.size(); index++) {
entity.addPart(nameValuePairs.get(index).getName(),
new StringBody(nameValuePairs.get(index).getValue(),
Charset.forName("UTF-8")));
}
httpPost.setEntity(entity);
HttpResponse response = httpClient.execute(httpPost, localContext);
HttpEntity r_entity = response.getEntity();
xmlString = EntityUtils.toString(r_entity);
} catch (IOException e) {
e.printStackTrace();
}
Log.d("SOAP ", "Result : " + xmlString.toString());
return xmlString.toString();
}
public class ParsedResponse {
public Object o;
public boolean error = false;
}
public class General {
public static Context AppContext = null;
public static Activity AppActivity = null;
public static boolean isOnline(Context c) {
ConnectivityManager cm = (ConnectivityManager) c
.getSystemService(Context.CONNECTIVITY_SERVICE);
return cm.getActiveNetworkInfo() != null
&& cm.getActiveNetworkInfo().isConnectedOrConnecting();
}}
public class BaseActivity extends Activity {
protected SharedPreferences prefs;
public ProgressDialog progressDialog;
General.AppContext = getApplicationContext();
General.AppActivity = BaseActivity.this;
prefs = PreferenceManager.getDefaultSharedPreferences(this);}
public class ErrorMgmt {
private Boolean error;
private String errorMessage;
private String exceptionMessage;
public ErrorMgmt(String exceptionMessage) {
error = false;
errorMessage = "";
this.exceptionMessage = exceptionMessage;
}
public ErrorMgmt() {
error = false;
errorMessage = "";
exceptionMessage = "";
}
public String getErrorMessage() {
if (error) {
if (errorMessage.equals("")) {
return exceptionMessage;
} else {
return errorMessage;
}
}
return null;
}
#SuppressWarnings("rawtypes")
public Boolean strError(String JsonResponse) {
this.error = false;
errorMessage = "";
try {
JSONObject objJson = new JSONObject(JsonResponse);
String strJson = objJson.getString("JsonResponse");
if(!strJson.equals("Please enter valid email")) {
this.error = true ;
errorMessage = "";
} else {
this.error = false;
}
} catch (JSONException e) {
this.error = true;
errorMessage = "";
HandleException.catchException(e, true);
}
return this.error;
}
#SuppressWarnings("rawtypes")
public Boolean isObjError(String JsonResponse) {
this.error = false;
errorMessage = "";
try {
JSONObject objJson = new JSONObject(JsonResponse);
if (objJson != null && !objJson.isNull("error") ) {
this.error = true;
Iterator IError = objJson.keys();
errorMessage = "";
while (IError.hasNext()) {
String key = (String) IError.next();
errorMessage += objJson.getString(key) + "\n";
}
} else if (objJson != null && !objJson.isNull("statusCode")) {
Integer statusCode = objJson.getInt("statusCode");
if (statusCode > 200) {
this.error = true;
} else {
this.error = false;
}
} else {
this.error = false;
}
} catch (JSONException e) {
this.error = true;
errorMessage = "";
HandleException.catchException(e, true);
}
return this.error;
}
#SuppressWarnings("rawtypes")
public Boolean isError(String JsonResponse) {
this.error = false;
errorMessage = "";
try {
JSONArray arrJson = new JSONArray(JsonResponse);
if (!arrJson.isNull(0) && !arrJson.getJSONObject(0).isNull("erorr")) {
this.error = true;
JSONObject objError = arrJson.getJSONObject(0);
Iterator IError = objError.keys();
errorMessage = "";
while (IError.hasNext()) {
String key = (String) IError.next();
errorMessage += objError.getString(key) + "\n";
}
} else if (!arrJson.isNull(0)
&& !arrJson.getJSONObject(0).isNull("statusCode")) {
Integer statusCode = arrJson.getJSONObject(0).getInt(
"statusCode");
if (statusCode > 200) {
this.error = true;
} else {
this.error = false;
}
} else {
this.error = false;
}
} catch (JSONException e) {
this.error = true;
errorMessage = "";
HandleException.catchException(e, true);
}
return this.error;
}
public void SetForsedError(Boolean val) {
error = true;
}
}
// Api for register with Email
public static ParsedResponse apiRegister(String name, String email,
String password) throws Exception {
ArrayList<NameValuePair> alNameValuePairs = new ArrayList<NameValuePair>();
NameValuePair nameValuePair = new BasicNameValuePair("name", name);
alNameValuePairs.add(nameValuePair);
nameValuePair = new BasicNameValuePair("email", email);
alNameValuePairs.add(nameValuePair);
nameValuePair = new BasicNameValuePair("password", password);
alNameValuePairs.add(nameValuePair);
// nameValuePair = new BasicNameValuePair("fb_uid", "");
// alNameValuePairs.add(nameValuePair);
String result = Soap.getSoapResponseByPost("user/register",
alNameValuePairs);
Log.e("apiRegister", result);
ErrorMgmt errMgmt = new ErrorMgmt(General.AppContext.getResources()
.getString(R.string.error_loading_data));
ParsedResponse p = new ParsedResponse();
p.error = false;
if (result != null && !result.equals("")) {
JSONObject jObject = new JSONObject(result);
String code = "";
if (!jObject.isNull("statusCode")) {
code = jObject.getString("statusCode");
}
if (code.equals("200")) {
JSONArray jsonArray = jObject.getJSONArray("User");
if (jsonArray.length() > 0) {
ArrayList<UserData> arrayList = new ArrayList<UserData>();
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
UserData objUserData = new UserData();
if (!jsonObject.isNull("uid")) {
objUserData.uid = jsonObject.getString("uid");
}
if (!jsonObject.isNull("name")) {
objUserData.name = jsonObject.getString("name");
}
if (!jsonObject.isNull("email")) {
objUserData.email = jsonObject.getString("email");
}
if (!jsonObject.isNull("password")) {
objUserData.password = jsonObject
.getString("password");
}
if (!jsonObject.isNull("created_date")) {
objUserData.created_date = jsonObject
.getString("created_date");
}
if (!jsonObject.isNull("status")) {
objUserData.status = jsonObject.getString("status");
}
if (!jsonObject.isNull("fb_uid")) {
objUserData.fb_uid = jsonObject.getString("fb_uid");
}
if (!jsonObject.isNull("account_type")) {
objUserData.account_type = jsonObject
.getString("account_type");
}
if (!jsonObject.isNull("profile_img")) {
objUserData.profile_img = jsonObject
.getString("profile_img");
}
if (!jsonObject.isNull("birthdate")) {
objUserData.birthdate = jsonObject
.getString("birthdate");
}
if (!jsonObject.isNull("city")) {
objUserData.city = jsonObject.getString("city");
}
JSONArray jsonArray2 = jsonObject
.getJSONArray("usersubscribe");
if (jsonArray2.length() > 0) {
for (int i1 = 0; i1 < jsonArray2.length(); i1++) {
JSONObject jsonObject2 = jsonArray2
.getJSONObject(i1);
if (!jsonObject2.isNull("isSubscribe")) {
objUserData.isSubscribe = jsonObject2
.getString("isSubscribe");
}
if (!jsonObject2.isNull("amount")) {
objUserData.amount = jsonObject2
.getString("amount");
}
}
}
arrayList.add(objUserData);
p.o = arrayList;
}
} else {
errMgmt = new ErrorMgmt(General.AppActivity.getResources()
.getString(R.string.err_norecords));
errMgmt.SetForsedError(true);
p.o = errMgmt;
p.error = true;
}
}
if (code.equals("401")) {
errMgmt = new ErrorMgmt(General.AppActivity.getResources()
.getString(R.string.allready_regi));
errMgmt.SetForsedError(true);
p.o = errMgmt;
p.error = true;
}
} else {
errMgmt = new ErrorMgmt(General.AppActivity.getResources()
.getString(R.string.err_norecords));
errMgmt.SetForsedError(true);
p.o = errMgmt;
p.error = true;
}
return p;
}
// Login with Facebook
private class GetFacebookLogin extends AsyncTask<Void, Void, Void> {
private ParsedResponse p = null;
private String message = "";
private Boolean error = false;
#Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
progressDialog.show();
}
#Override
protected Void doInBackground(Void... params) {
try {
p = new ParsedResponse();
p = Soap.apiUserLoginFacebook(fbID);
if (p.error) {
ErrorMgmt errmgmt = (ErrorMgmt) p.o;
message = errmgmt.getErrorMessage();
error = true;
} else {
arrayList.clear();
arrayList.addAll((ArrayList<UserData>) p.o);
error = false;
}
} catch (Exception e) {
message = "problem in loading data";
error = true;
}
return null;
}
#Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
progressDialog.dismiss();
if (error) {
new AlertDialog.Builder(Register_Login_Screen.this)
.setMessage(message)
.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog,
int which) {
dialog.dismiss();
}
}).show();
} else {
UserData objUserData = new UserData();
for (int i = 0; i < arrayList.size(); i++) {
objUserData = arrayList.get(i);
}
String profileImage = "";
try {
URL image_value = new URL("http://graph.facebook.com/"
+ fbID + "/picture?height=150&width=150");
profileImage = String.valueOf(image_value);
Log.e("fb_image_path", "" + image_value);
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Editor e = prefs.edit();
e.putBoolean(General.PREFS_login, true);
e.putString(General.PREFS_Uid, objUserData.uid);
e.putString(General.PREFS_name, objUserData.name);
e.putString(General.PREFS_email, objUserData.email);
e.putString(General.PREFS_fb_uid, objUserData.fb_uid);
e.putString(General.PREFS_logintype, General.PREFS_valuefblogin);
if (objUserData.profile_img != null
&& !objUserData.profile_img.equals("")) {
e.putString(General.PREFS_profile_img,
objUserData.profile_img);
} else {
e.putString(General.PREFS_profile_img, profileImage);
}
e.putString(General.PREFS_account_type,
objUserData.account_type);
e.putString(General.PREFS_birthdate, objUserData.birthdate);
e.putString(General.PREFS_city, objUserData.city);
e.putString(General.PREFS_subscribed, objUserData.isSubscribe);
e.putString(General.PREFS_amount, objUserData.amount);
String[] strings = null;
for (int i = 0; i < objUserData.screenerArr.size(); i++) {
String queString = objUserData.screenerArr.get(i);
strings = queString.split(",");
String question1 = strings[0];
e.putString("RosaRosa_screener_question" + (i + 1),
question1);
e.putBoolean("RosaRosa_screener_ans" + (i + 1), true);
String ans1 = strings[1];
e.putString(
"RosaRosa_screener_question" + (i + 1) + "_ans",
ans1);
Log.e("question", "" + question1 + ans1);
}
e.commit();
Toast.makeText(Register_Login_Screen.this, R.string.succ_login,
Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Register_Login_Screen.this,
Personal_Stylist_Activity.class);
startActivity(intent);
finish();
}
}
}

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

Android: start a new Activity in onPostExecute() when two strings are equal - java

It should be if(res.equals("valid")) { ... } When using if(res =="valid") you compare the strings by reference. Please, see How do I compare strings in Java?.

you should write: if ("valid".equals(res)) { } Also, you should not call onPostExecute in doInBackground. It will be automatically called when the AsyncTask has finished executing.

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