Don't get any output on TextView

Don't get any output on TextView - java

I made a small app that returns the html of a website for practice. But i'm not getting the output on the textview. Here's the code:
public class MainActivity extends Activity {
TextView httpresponse;
EditText WebAddress;
String website;
Button getHtml;
HttpClient client;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WebAddress = (EditText) findViewById(R.id.editText1);
//client = new DefaultHttpClient();
httpresponse = (TextView) findViewById(R.id.tvHttpStuff);
getHtml = (Button) findViewById(R.id.getHtmlBtn);
getHtml.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
website = WebAddress.getText().toString();
//httpresponse.setText(website);
//GetThatHttp http = new GetThatHttp();
String returned;
try{
returned = getInternetData();
httpresponse.setText(returned);
}catch(Exception e){
e.printStackTrace();
}
}
});
}
public String getInternetData() throws Exception{
BufferedReader buffReader=null;
String data =null;
try{
HttpClient client = new DefaultHttpClient();
URI websiteURL = new URI(website);
HttpGet request = new HttpGet();
request.setURI(websiteURL);
HttpResponse response = client.execute(request);
buffReader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer stringBuilder = new StringBuffer("");
String line = " ";
String newLine = System.getProperty("line.separator");
while((line = buffReader.readLine())!= null){
stringBuilder.append(line + newLine);
}
buffReader.close();
data = stringBuilder.toString();
return data;
}finally{
if(buffReader !=null){
try{
buffReader.close();
return data;
}catch(Exception e){
e.printStackTrace();
}
}
}
}
}
EDIT: Just added my XML file
Here is the XML file.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="#+id/tvHttpStuff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/editText1"
android:layout_marginTop="28dp"
android:layout_marginRight="20dp"
android:layout_marginLeft="20dp"
android:text="TextView" />
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/tvHttpStuff"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginTop="20dp"
android:ems="10"
android:hint="http://website.com" >
<requestFocus />
</EditText>
<Button
android:id="#+id/getHtmlBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/editText1"
android:layout_marginRight="20dp"
android:layout_marginLeft="20dp"
android:text="Get HTML" />
I tested it already out with a website. It still didn't work. I hope someone can help me with this.

Unless you changed it (you didn't), you can't do networking on main thread. You're probably having a NetworkOnMainThreadException, did you check the logs?
To have a cleaner code, add a callback to handle the button click:
<Button
android:id="#+id/getHtmlBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/editText1"
android:layout_marginRight="20dp"
android:layout_marginLeft="20dp"
android:text="Get HTML"
android:onClick="onClickButtonGetHtml" />
Then you need a new thread to do the networking stuff. If there's no problem with it (any exceptions calling your getInternetData()), you should use the UI thread to update your TextView. I didn't touch your getInternetData().
public class MainActivity extends Activity {
TextView httpresponse;
EditText webAddress;
String website;
HttpClient client;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webAddress = (EditText) findViewById(R.id.editText1);
httpresponse = (TextView) findViewById(R.id.tvHttpStuff);
}
public void onClickButtonGetHtml(View view) {
// get the website URL from the EditText
website = webAddress.getText().toString();
// use a new thread to do the network stuff
new Thread(new Runnable() {
#Override
public void run() {
try {
// get the HTML
final String returned = getInternetData();
// update your TextView using the UI Thread
runOnUiThread(new Runnable() {
#Override
public void run() {
httpresponse.setText(returned);
}
});
}
catch(Exception ex) { ex.printStackTrace();}
}
}).start();
}
public String getInternetData() throws Exception {
BufferedReader buffReader = null;
String data = null;
try {
HttpClient client = new DefaultHttpClient();
URI websiteURL = new URI(website);
HttpGet request = new HttpGet();
request.setURI(websiteURL);
HttpResponse response = client.execute(request);
buffReader = new BufferedReader(new InputStreamReader(response
.getEntity().getContent()));
StringBuffer stringBuilder = new StringBuffer("");
String line = " ";
String newLine = System.getProperty("line.separator");
while ((line = buffReader.readLine()) != null) {
stringBuilder.append(line + newLine);
}
buffReader.close();
data = stringBuilder.toString();
return data;
}
finally {
if (buffReader != null) {
try {
buffReader.close();
return data;
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
Edit: make sure that you have the network permission on the manifest.
<uses-permission android:name="android.permission.INTERNET"></uses-permission>

Try changing httpresponse.setText(website); for httpresponse.setText("Something"); and show if you gets the text that you writed in the output. If not you should post your layout xml file.
EDIT:
Try adding:
</RelativeLayout>
In the end of your xml file. Then clean your project and try again, maybe this layout error is causing a a bad R.java built.

Related

check list with AsyncTask

I have problem when i get the list from server i want to check it, if it's any object there or not.
if there are object , appears in my layout text : there is no object after few seconds it's disappears
and show my list.
i want just if there is object will appear in my layout directly.
private class RetrieveTask extends AsyncTask> {
#Override
protected List<branch> doInBackground(String... params) {
manager = new SessionManager(getActivity().getApplicationContext());
manager.checkLogin();
HashMap<String, String> user = manager.getUserID();
String uid = user.get(SessionManager.KEY_uid);
// Intent intent= getActivity().getIntent(); // gets the previously created intent
//String type18 = intent.getStringExtra("key28");
String strUrl =
HttpURLConnection connection = null;
BufferedReader reader = null;
try {
URL url = new URL(strUrl);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
String finalJson = buffer.toString();
JSONObject parentObject = new JSONObject(finalJson);
JSONArray parentArray = parentObject.getJSONArray("markers");
////////////////////////////////////////
List<branch> bList = new ArrayList<>();
Gson gson = new Gson();
for (int i = 0; i < parentArray.length(); i++) {
JSONObject finalObject = parentArray.getJSONObject(i);
/////////market object
market mr = new market(Integer.valueOf(finalObject.getString("id")), finalObject.getString("mName")
, finalObject.getString("pic"));
/////////location object
location lo = new location(Float.valueOf(finalObject.getString("lat")), Float.valueOf(finalObject.getString("lng"))
, finalObject.getString("area"), finalObject.getString("city"));
/////////(branch object) inside it (market object)
branch it = new branch(Integer.valueOf(finalObject.getString("bid")), Integer.valueOf(finalObject.getString("phone"))
, finalObject.getString("ser"), Integer.valueOf(finalObject.getString("dis")), Integer.valueOf(finalObject.getString("brNo"))
, Float.valueOf(finalObject.getString("rating")), mr, lo,true);
/*//////////add marker
LatLng latlng = new LatLng(Double.valueOf(finalObject.getString("lat")), Double.valueOf(finalObject.getString("lng")));
addMarker(latlng, Integer.valueOf(finalObject.getString("bid")));*/
// adding the branch object in the list
bList.add(it);
}
return bList;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
} finally {
if (connection != null) {
connection.disconnect();
}
try {
if (reader != null) {
reader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
here the postExcute
#Override
protected void onPostExecute(final List<branch> result) {
super.onPostExecute(result);
if (result != null) {
final itemAdapter adapter = new itemAdapter(getActivity().getApplicationContext(), R.layout.row_favmarkets, result);
lv.setAdapter(adapter);
}
}
}
this is my layout xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="4dp"
android:paddingLeft="4dp"
android:paddingRight="4dp"
android:paddingTop="4dp"
tools:context="com.gmplatform.gmp.favouriteitem">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView28"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="40dp"
android:layout_marginTop="250dp"
android:text="There is no Markets in your Favourite List.."
android:textSize="24sp"
android:visibility="gone" />
</LinearLayout>
<ListView
android:id="#+id/l20"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:horizontalSpacing="3dp"
android:numColumns="3"
android:verticalSpacing="0dp" />
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/button6"
android:layout_marginLeft="400dp" />

Suggested changes which will at first show nothing when the request is executed. Once completed, if the list is empty it'll show "There is no Markets in your Favourite List..", otherwise the list will show.
Part Layout XML:
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/linearLayout28">
<TextView
android:id="#+id/textView28"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="40dp"
android:layout_marginTop="250dp"
android:text="There is no Markets in your Favourite List.."
android:textSize="24sp"
android:visibility="gone" />
</LinearLayout>
Initialize linearLayout28:
LinearLayout linearLayout28 = findViewById(R.id.linearLayout28);
And changes for the AsyncTask:
private class RetrieveTask extends AsyncTask<Void, Void, List<branch>> {
#Override
protected void onPreExecute() {
super.onPreExecute();
lv.setVisibility(View.GONE);
linearLayout28.setVisibility(View.GONE);
}
#Override
protected List<branch> doInBackground(String... params) {
//Keep as your code
...
}
#Override
protected void onPostExecute(final List<branch> result) {
super.onPostExecute(result);
if (result != null && result.size() != 0) {
final itemAdapter adapter = new itemAdapter(
getActivity().getApplicationContext(),
R.layout.row_favmarkets, result);
lv.setAdapter(adapter);
lv.setVisibility(View.VISIBLE);
linearLayout28.setVisibility(View.GONE);
} else {
lv.setVisibility(View.GONE);
linearLayout28.setVisibility(View.VISIBLE);
}
}
}

You are basically on the solution but you should not update the user interface from your AsyncTask. Create an interface and implement it on the Activity. Let the activity to update the data on the UI when data is ready or show a message error.
As an example, define the interface in your AsyncTask like:
private TaskCallback listener = null;
public interface TaskCallback {
void OnTaskCompleted ();
}
public void setListener (TaskCallback listener) {
this.listener = listener;
}
When your task was completed:
#Override
public void onPostExecute (Void v) {
if (listener != null) {
listener.OnTaskCompleted ();
}
}
You can add parameters to your callback base on your needs.
At your Activity level:
public class YourActivity extends Activity implements YourTask.TaskCallback {
// When you execute your task add the reference to the listener
YourTask task = new YourTask (YourActivity.this);
task.setListener (YourActivity.this);
task.execute ();
#Override
public void OnTaskCompleted () {
// Update your screen or show an error message
}
}

setOnItemSelectedListener not being called?

I'm new to Android and was working on my first app. I was trying to parse the contents of a Google Sheets spreadsheets, specifically a list of names into a Spinner. I've done so successfully by using an ArrayAdapter with an ArrayList as I can see the options when I expand the Spinner. The problem I'm facing is that the Spinner doesn't show the currently selected item when one is selected. If you try to run my code, you'll see that if you try to click the submit Button, it'll tell you that null is being selected, so I've narrowed down my problem to the currently selected name String not being selected.
Here is my MainActivity class:
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
ArrayList<String> names = new ArrayList<String>();
Spinner spBusinessType;
Button btnsubmit;
ArrayAdapter<String> adapterBusinessType;
String sbusinesstype;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
spBusinessType = (Spinner) findViewById(R.id.spBussinessType);
btnsubmit=(Button)findViewById(R.id.submit);
btnsubmit.setOnClickListener(this);
new DownloadWebpageTask(new AsyncResult() {
#Override
public void onResult(JSONObject object) {
processJson(object);
}
}).execute("https://spreadsheets.google.com/tq?key=1JKU2Vt_gMNUYYALct4m9xElLdpGlQ3N4uhS9qFRzxOQ");
adapterBusinessType = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, names);
adapterBusinessType.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spBusinessType.setAdapter(adapterBusinessType);
spBusinessType.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapter, View v,
int position, long id) {
// On selecting a spinner item
sbusinesstype = adapter.getItemAtPosition(position).toString();
System.out.println(sbusinesstype);
// Showing selected spinner item
Toast.makeText(getApplicationContext(),
"Bussiness Type : " + sbusinesstype, Toast.LENGTH_SHORT).show();
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(), "You have selected " + sbusinesstype,Toast.LENGTH_SHORT).show();
}
private void processJson(JSONObject object) {
try {
JSONArray rows = object.getJSONArray("rows");
for (int r = 0; r < rows.length(); ++r) {
JSONObject row = rows.getJSONObject(r);
JSONArray columns = row.getJSONArray("c");
String name = columns.getJSONObject(0).getString("v");
names.add(name);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
the AsyncResult interface I'm using to obtain a JSON object from Google Sheets:
public interface AsyncResult
{
void onResult(JSONObject object);
}
the DownloadWebpageTask class that is obtaining and parsing the JSON object:
public class DownloadWebpageTask extends AsyncTask<String, Void, String> {
AsyncResult callback;
public DownloadWebpageTask(AsyncResult callback) {
this.callback = callback;
}
#Override
protected String doInBackground(String... urls) {
// params comes from the execute() call: params[0] is the url.
try {
return downloadUrl(urls[0]);
} catch (IOException e) {
return "Unable to download the requested page.";
}
}
// onPostExecute displays the results of the AsyncTask.
#Override
protected void onPostExecute(String result) {
// remove the unnecessary parts from the response and construct a JSON
int start = result.indexOf("{", result.indexOf("{") + 1);
int end = result.lastIndexOf("}");
String jsonResponse = result.substring(start, end);
try {
JSONObject table = new JSONObject(jsonResponse);
callback.onResult(table);
} catch (JSONException e) {
e.printStackTrace();
}
}
private String downloadUrl(String urlString) throws IOException {
InputStream is = null;
try {
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000 /* milliseconds */);
conn.setConnectTimeout(15000 /* milliseconds */);
conn.setRequestMethod("GET");
conn.setDoInput(true);
// Starts the query
conn.connect();
int responseCode = conn.getResponseCode();
is = conn.getInputStream();
String contentAsString = convertStreamToString(is);
return contentAsString;
} finally {
if (is != null) {
is.close();
}
}
}
private String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
the activity_main layout file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".MainActivity">
<include layout="#layout/content_main" />
</RelativeLayout>
and the content_main layout file that I put the Spinner in:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity">
tools:showIn="#layout/activity_main">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Select Business Type"
android:textColor="#000000"
android:textSize="20sp" />
<Spinner
android:id="#+id/spBussinessType"
style="#style/Base.Widget.AppCompat.Spinner.Underlined"
android:layout_width="match_parent"
android:layout_height="wrap_content"></Spinner>
<Button
android:id="#+id/submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="10dp"
android:text="Submit"
android:textSize="15sp" />
</LinearLayout>
What is causing the adapter to not detect when one of the name strings is being selected? Could it be related to how I'm parsing them from the Google Sheet?

You didnt notify the ArrayAdapter that the data has changed, you originally passed empty Arraylist and upon filling the array list, you have to notifiy the Adapter that data has changed and its time for it to consider that, something like
private void processJson(JSONObject object) {
try {
JSONArray rows = object.getJSONArray("rows");
for (int r = 0; r < rows.length(); ++r) {
JSONObject row = rows.getJSONObject(r);
JSONArray columns = row.getJSONArray("c");
String name = columns.getJSONObject(0).getString("v");
names.add(name);
}
adapterBusinessType.notifyDataSetChanged();
} catch (JSONException e) {
e.printStackTrace();
}
}
That should help.

It would appear no data is being displayed in your Adapter. Nothing can be selected. Your listener code looks fine.
Put adapterBusinessType.notifyDatasetChanged() into the processJson method. Outside the catch or after you add all the data to the list.
Or... replace names.add with adapterBusinessType.add

android.view.View cannot be cast to android.support.v7.widget.RecyclerView

I'm following this tutorial http://javatechig.com/android/android-recyclerview-example
while after done coding, i'm getting one error android.view.View cannot be cast to android.support.v7.widget.RecyclerView. thanks in advance
My MainActivity.java
public class MainActivity extends AppCompatActivity {
private static final String TAG = "RecyclerViewExample";
private List<FeedItem> feedsList;
private RecyclerView mRecyclerView;
private MyRecyclerAdapter adapter;
private ProgressBar progressBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initialize recycler view
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerd_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
progressBar = (ProgressBar) findViewById(R.id.progress_bar);
progressBar.setVisibility(View.VISIBLE);
// Downloading data from below url
final String url = "http://javatechig.com/?json=get_recent_posts&count=45";
new AsyncHttpTask().execute(url);
}
public class AsyncHttpTask extends AsyncTask<String, Void, Integer> {
#Override
protected void onPreExecute() {
setProgressBarIndeterminateVisibility(true);
}
#Override
protected Integer doInBackground(String... params) {
Integer result = 0;
HttpURLConnection urlConnection;
try {
URL url = new URL(params[0]);
urlConnection = (HttpURLConnection) url.openConnection();
int statusCode = urlConnection.getResponseCode();
// 200 represents HTTP OK
if (statusCode == 200) {
BufferedReader r = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
StringBuilder response = new StringBuilder();
String line;
while ((line = r.readLine()) != null) {
response.append(line);
}
parseResult(response.toString());
result = 1; // Successful
} else {
result = 0; //"Failed to fetch data!";
}
} catch (Exception e) {
Log.d(TAG, e.getLocalizedMessage());
}
return result; //"Failed to fetch data!";
}
#Override
protected void onPostExecute(Integer result) {
// Download complete. Let us update UI
progressBar.setVisibility(View.GONE);
if (result == 1) {
adapter = new MyRecyclerAdapter(MainActivity.this, feedsList);
mRecyclerView.setAdapter(adapter);
} else {
Toast.makeText(MainActivity.this, "Failed to fetch data!", Toast.LENGTH_SHORT).show();
}
}
}
private void parseResult(String result) {
try {
JSONObject response = new JSONObject(result);
JSONArray posts = response.optJSONArray("posts");
feedsList = new ArrayList<>();
for (int i = 0; i < posts.length(); i++) {
JSONObject post = posts.optJSONObject(i);
FeedItem item = new FeedItem();
item.setTitle(post.optString("title"));
item.setThumbnail(post.optString("thumbnail"));
feedsList.add(item);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:class="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:id="#+id/relativ"
tools:context="com.example.ict4.recyclerviewasyntask.MainActivity">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerd_view"
android:layout_centerInParent="true"
class="android.support.v7.widget.RecyclerView"/>
<ProgressBar
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/progress_bar"
android:layout_centerInParent="true"
/>
</RelativeLayout>

In your XML layout, change
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerd_view"
android:layout_centerInParent="true"
class="android.support.v7.widget.RecyclerView"/>
to
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerd_view"
android:layout_centerInParent="true" />

Populate listview from JSONArray android

Basically this question is an update for this question
Just to rewind again, this is the country_info.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="6dip" >
<LinearLayout
android:id="#+id/gambar_saja"
android:layout_width="150dp"
android:layout_height="160dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/n1"/>
</LinearLayout>
<RelativeLayout
android:id="#+id/detail_country"
android:layout_width="match_parent"
android:layout_height="160dp"
android:layout_toRightOf="#+id/gambar_saja"
android:layout_toEndOf="#+id/gambar_saja"
android:orientation="vertical"
android:layout_marginLeft="4dp">
<TextView
android:id="#+id/code"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="TextView"
android:textSize="24sp"
android:textStyle="bold"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_marginBottom="4dp"/>
<TextView
android:id="#+id/name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/code"
android:layout_below="#+id/code"
android:text="TextView"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_marginBottom="4dp"/>
<TextView
android:id="#+id/continent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/name"
android:layout_below="#+id/name"
android:text="TextView"
android:textSize="14sp"
android:textColor="#android:color/black"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_marginBottom="4dp"/>
<TextView
android:id="#+id/region"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/continent"
android:layout_below="#+id/continent"
android:text="TextView"
android:textSize="14sp"
android:textColor="#android:color/black"
android:textAppearance="?android:attr/textAppearanceMedium"/>
</RelativeLayout>
</RelativeLayout>
and here is cari_studio.xml to populate the country_info into listview (listView1) :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#android:color/white">
<RelativeLayout
android:id="#+id/area"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:orientation="horizontal" >
<TextView
android:id="#+id/isiArea"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:background="#drawable/text_selector"
android:gravity="center_vertical"
android:paddingBottom="10dp"
android:paddingLeft="35dp"
android:paddingRight="5dp"
android:paddingTop="10dp"
android:text="#string/area"
android:textColor="#color/black"
android:textSize="14sp"
android:visibility="visible"/>
<Spinner
android:id="#+id/textArea"
android:layout_marginRight="15dp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="#string/area"
android:textColor="#color/black"
android:inputType="text"
android:textSize="14sp"/>
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/list_area_studio"
android:layout_below="#+id/area"
android:layout_width="match_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:padding="10dp"
android:text="#string/cari_studio" android:textSize="20sp" />
<EditText android:id="#+id/myFilter" android:layout_width="match_parent"
android:layout_height="wrap_content" android:ems="10"
android:hint="#string/studio_hint">
<requestFocus />
</EditText>
<ListView android:id="#+id/listView1" android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/bottom_navigation_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RadioGroup
android:id="#+id/radiogroup"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:orientation="horizontal"
android:background="#drawable/navbar_background"
>
<RadioButton
android:id="#+id/btnAll"
style="#style/navbar_button"
android:drawableTop="#drawable/navbar_allselector"
android:text="All"
/>
<RadioButton
android:id="#+id/btnPicture"
style="#style/navbar_button"
android:drawableTop="#drawable/navbar_pictureselector"
android:text="Pictures"
android:layout_marginLeft="5dp"
/>
<RadioButton
android:id="#+id/btnVideo"
style="#style/navbar_button"
android:drawableTop="#drawable/navbar_videoselector"
android:text="Videos"
android:layout_marginLeft="5dp"
/>
<RadioButton
android:id="#+id/btnFile"
style="#style/navbar_button"
android:drawableTop="#drawable/navbar_fileselector"
android:text="Files"
android:layout_marginLeft="5dp"
/>
<RadioButton
android:id="#+id/btnMore"
style="#style/navbar_button"
android:drawableTop="#drawable/navbar_moreselector"
android:text="More"
android:layout_marginLeft="5dp"
/>
</RadioGroup>
<LinearLayout
android:id="#+id/floatingmenu"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:background="#drawable/laysemitransparentwithborders"
android:orientation="vertical"
android:layout_marginBottom="-4dp"
android:visibility="gone"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="5dp"
android:paddingTop="15dp"
android:paddingBottom="15dp"
android:text="Contacts"
android:textColor="#ffffff"
android:textSize="16dp"
/>
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:background="#ff999999"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="5dp"
android:paddingTop="15dp"
android:paddingBottom="15dp"
android:text="Calendar"
android:textColor="#ffffff"
android:textSize="16dp"
/>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
and here is the Cari Studio Class to get JSONArray result (use post) and I already success get the result :
public class CariStudio extends Activity{
final Context context = this;
MyCustomAdapter dataAdapter = null;
RadioButton radioButton1, radioButton2, radioButton3, radioButton4, radioButton5;
TextView flexlocationid;
Spinner flexlocation;
JSONObject jsonobject;
JSONArray jsonarray;
ArrayList<String> provincelist;
ArrayList<ProvinceModel> province;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cari_studio);
//Generate list View from ArrayList
new DownloadJSON().execute();
addListenerOnButton();
}
public void addListenerOnButton() {
Bundle extras = getIntent().getExtras();
final String token= extras.getString("TOKEN");
radioButton1 = (RadioButton) findViewById(R.id.btnAll);
radioButton1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(context, home.class);
intent.putExtra("TOKEN", token);
startActivity(intent);
}
});
radioButton2 = (RadioButton) findViewById(R.id.btnPicture);
radioButton2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(context, CariKelas.class);
intent.putExtra("TOKEN", token);
startActivity(intent);
}
});
radioButton3 = (RadioButton) findViewById(R.id.btnVideo);
radioButton3.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(context, CariStudio.class);
intent.putExtra("TOKEN", token);
startActivity(intent);
}
});
radioButton4 = (RadioButton) findViewById(R.id.btnFile);
radioButton4.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(context, HotStuff.class);
intent.putExtra("TOKEN", token);
startActivity(intent);
}
});
radioButton5 = (RadioButton) findViewById(R.id.btnMore);
radioButton5.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(context, MyAccount.class);
intent.putExtra("TOKEN", token);
startActivity(intent);
}
});
flexlocation = (Spinner) findViewById(R.id.textArea);
flexlocationid = (TextView) findViewById(R.id.isiArea);
}
private class SendfeedbackJob extends AsyncTask<String, Void, String> {
private static final String LOG_TAG = "CariStudio";
ProgressDialog dialog;
Bundle extras = getIntent().getExtras();
final String token= extras.getString("TOKEN");
#Override
protected String doInBackground(String... params) {
String areaid = params[0];
Utils.log("params 1:"+ areaid);
// do above Server call here
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("region_id", areaid ));
String responseString = null;
final String url_studio = Constant.URI_BASE_AVAILABLE_STUDIO+ "?token=" + token;
Utils.log("url studio:"+ url_studio);
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url_studio);
// no idea what this does :)
httppost.setEntity(new UrlEncodedFormEntity(postParameters));
// This is the line that send the request
HttpResponse response = httpclient.execute(httppost);
Utils.log("response:"+ response);
HttpEntity entity = response.getEntity();
String responseAsText = EntityUtils.toString(entity);
Utils.log("daftar isi studio: " + responseAsText);
JSONArray json = new JSONArray(responseAsText);
for (int i = 0; i < json.length(); i++) {
jsonobject = json.getJSONObject(i);
final String studio_name = jsonobject.getString("studio_name");
final String address = jsonobject.getString("address");
final String website = jsonobject.getString("website");
final String seo_url = jsonobject.getString("seo_url");
Utils.log("studio_name: " + studio_name);
runOnUiThread(new Runnable() {
public void run() {
ArrayList<Country> countryList = new ArrayList<Country>();
Country country = new Country(studio_name,address, "Website:"+ website,
"Fasilitas:"+ seo_url);
countryList.add(country);
//create an ArrayAdaptar from the String Array
dataAdapter = new MyCustomAdapter(context,
R.layout.country_info, countryList);
//enables filtering for the contents of the given ListView
ListView listView = (ListView) findViewById(R.id.listView1);
// Assign adapter to ListView
listView.setAdapter(dataAdapter);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
Country country = (Country) parent.getItemAtPosition(position);
Toast.makeText(getApplicationContext(),
country.getCode(), Toast.LENGTH_SHORT).show();
Intent intent = new Intent(context, checkin.class);
startActivity(intent);
}
});
EditText myFilter = (EditText) findViewById(R.id.myFilter);
myFilter.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
dataAdapter.getFilter().filter(s.toString());
}
});
}
});
}
}
catch (Exception e)
{
/*Toast.makeText(context,
"user not registered", Toast.LENGTH_SHORT).show();*/
Log.e(LOG_TAG, String.format("Error during login: %s", e.getMessage()));
}
return "processing";
}
protected void onPostExecute(Boolean result) {
//dialog.cancel();
}
}
// Download JSON file AsyncTask
private class DownloadJSON extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) {
// Locate the CariStudio Class
province = new ArrayList<ProvinceModel>();
// Create an array to populate the spinner
provincelist = new ArrayList<String>();
// JSON file URL address
final String url_flexlocation = Constant.URI_BASE_FLEXLOCATION;
Utils.log("url_flexlocation: " + url_flexlocation);
try {
// Locate the NodeList name
HttpGet httppost = new HttpGet(url_flexlocation);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
String data = EntityUtils.toString(entity);
Utils.log("data: " + data);
JSONArray json = new JSONArray(data);
for (int i = 0; i < json.length(); i++) {
jsonobject = json.getJSONObject(i);
ProvinceModel worldpop = new ProvinceModel();
worldpop.setId(jsonobject.optString("flex_id"));
worldpop.setProvince(jsonobject.optString("name"));
province.add(worldpop);
// Populate spinner with province names
provincelist.add(jsonobject.optString("name"));
}
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void args) {
// Locate the spinner in cari_studio.xml
Spinner mySpinner = (Spinner) findViewById(R.id.textArea);
// Spinner adapter
mySpinner
.setAdapter(new ArrayAdapter<String>(CariStudio.this,
R.layout.spinner_white,
provincelist));
// Spinner on item click listener
mySpinner
.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0,
View arg1, int position, long arg3) {
// TODO Auto-generated method stub
// Locate the textviews in cari_studio.xml
TextView flexlocationid = (TextView) findViewById(R.id.isiArea);
// Set the text followed by the position
flexlocationid.setText(province.get(position).getId());
String areaid = flexlocationid.getText().toString();
Utils.log("area id:" + areaid);
SendfeedbackJob job = new SendfeedbackJob();
job.execute(areaid);
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
}
private class MyCustomAdapter extends ArrayAdapter<Country> {
private ArrayList<Country> originalList;
private ArrayList<Country> countryList;
private CountryFilter filter;
public MyCustomAdapter(Context context, int textViewResourceId,
ArrayList<Country> countryList) {
super(context, textViewResourceId, countryList);
this.countryList = new ArrayList<Country>();
this.countryList.addAll(countryList);
this.originalList = new ArrayList<Country>();
this.originalList.addAll(countryList);
}
#Override
public Filter getFilter() {
if (filter == null){
filter = new CountryFilter();
}
return filter;
}
private class ViewHolder {
TextView code;
TextView name;
TextView continent;
TextView region;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
Log.v("ConvertView", String.valueOf(position));
if (convertView == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(R.layout.country_info, null);
holder = new ViewHolder();
holder.code = (TextView) convertView.findViewById(R.id.code);
holder.name = (TextView) convertView.findViewById(R.id.name);
holder.continent = (TextView) convertView.findViewById(R.id.continent);
holder.region = (TextView) convertView.findViewById(R.id.region);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
Country country = countryList.get(position);
holder.code.setText(country.getCode());
holder.name.setText(country.getName());
holder.continent.setText(country.getContinent());
holder.region.setText(country.getRegion());
return convertView;
}
private class CountryFilter extends Filter
{
#Override
protected FilterResults performFiltering(CharSequence constraint) {
constraint = constraint.toString().toLowerCase();
FilterResults result = new FilterResults();
if(constraint != null && constraint.toString().length() > 0)
{
ArrayList<Country> filteredItems = new ArrayList<Country>();
for(int i = 0, l = originalList.size(); i < l; i++)
{
Country country = originalList.get(i);
if(country.toString().toLowerCase().contains(constraint))
filteredItems.add(country);
}
result.count = filteredItems.size();
result.values = filteredItems;
}
else
{
synchronized(this)
{
result.values = originalList;
result.count = originalList.size();
}
}
return result;
}
#SuppressWarnings("unchecked")
#Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
countryList = (ArrayList<Country>)results.values;
notifyDataSetChanged();
clear();
for(int i = 0, l = countryList.size(); i < l; i++)
add(countryList.get(i));
notifyDataSetInvalidated();
}
}
}
}
the result that I got from Utils.log("daftar isi studio: " + responseAsText) :
[{"id":"8","studio_name":"Dodi fit","seo_url":"dodi-fit","address":"Komp. Pertanian Blok 5 No 3","postcode":"87473","area_phone":"","phone":"+62876543","area_phone_second":"","phone_second":"+62","website":"sucifir.com","region_id":"12","lokasi_id":"138","booking_window":"7","facebook":"dodifitfb","twitter":"dodifittw","how_to_get_there":"over there, by trun left and right","priority":"5"},{"id":"11","studio_name":"inu fit","seo_url":"inu-fit","address":"","postcode":"","area_phone":"","phone":"+6221324234","area_phone_second":"","phone_second":"","website":"","region_id":"11","lokasi_id":"137","booking_window":"0","facebook":"","twitter":"","how_to_get_there":"","priority":"5"},{"id":"5","studio_name":"Vstudio","seo_url":"vstudio","address":"Plaza Indonesia Ground Floor #541","postcode":"","area_phone":"","phone":"+6221453787","area_phone_second":"","phone_second":"","website":"www.jkiij.com","region_id":"12","lokasi_id":"137","booking_window":"0","facebook":"face","twitter":"twy","how_to_get_there":"","priority":"5"},{"id":"7","studio_name":"Infovendor","seo_url":"infovendor","address":"","postcode":"","area_phone":"","phone":"+6221123452","area_phone_second":"","phone_second":"","website":"www.kidsdngf.com","region_id":"12","lokasi_id":"135","booking_window":"1","facebook":"","twitter":"","how_to_get_there":"","priority":"5"},{"id":"12","studio_name":"Seleb Fitnes One","seo_url":"selebfitnesone-57","address":"Kelapa gading timur no 17","postcode":"","area_phone":"","phone":"+6221453777","area_phone_second":"","phone_second":"","website":"selebfirnes.com","region_id":"12","lokasi_id":"138","booking_window":"0","facebook":"","twitter":"","how_to_get_there":"","priority":"5"},{"id":"14","studio_name":"Riri Studio","seo_url":"riristudio-57","address":"Mall Kelapa Gading, Lt 5","postcode":"","area_phone":"","phone":"+6221459325","area_phone_second":"","phone_second":"","website":"riri-riri.com","region_id":"12","lokasi_id":"135","booking_window":"7","facebook":"","twitter":"","how_to_get_there":"","priority":"5"},{"id":"19","studio_name":"NF Studio","seo_url":"nf-studio","address":"Ruko Mediterania Blok A4 No 79Jalan Ahmad Yani Kav A5, Kota Bekasi","postcode":"13536","area_phone":"","phone":"+62265111222","area_phone_second":"","phone_second":"","website":"nfstudio.com","region_id":"11","lokasi_id":"137","booking_window":"7","facebook":"","twitter":"","how_to_get_there":"","priority":"5"}]
and the result that I got from looping Utils.log("studio_name: " + studio_name) are :
studio_name: Dodi fit
studio_name: inu fit
studio_name: Vstudio
studio_name: Infovendor
studio_name: Seleb Fitnes One
studio_name: Riri Studio
studio_name: NF Studio
It means I already got all of it use looping.
But the problem is the result did not populate into listview (it show as one one last result NF Studio, the other did not appear).
What I need is populate this into 4 texview from country_info (I disable imageview) :
String studio_name, address, website, seo_url
What is the correct code to show/populate that into listview?

Add the values into a List and pass it to the Adapter class of your ListView inside onPostExecute()

You don't need a thread, that's the whole point of async.
List View code is in the for loop
UI code belongs to PostExecute() not doInBackground()
You reinitialized the list inside of the loop
Try like this:
private class SendfeedbackJob extends AsyncTask<String, Void, String> {
private static final String LOG_TAG = "CariStudio";
private ArrayList<Country> countryList = new ArrayList<Country>();
ProgressDialog dialog;
Bundle extras = getIntent().getExtras();
final String token= extras.getString("TOKEN");
#Override
protected String doInBackground(String... params) {
String areaid = params[0];
Utils.log("params 1:"+ areaid);
// do above Server call here
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("region_id", areaid ));
String responseString = null;
final String url_studio = Constant.URI_BASE_AVAILABLE_STUDIO+ "?token=" + token;
Utils.log("url studio:"+ url_studio);
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url_studio);
// no idea what this does :)
httppost.setEntity(new UrlEncodedFormEntity(postParameters));
// This is the line that send the request
HttpResponse response = httpclient.execute(httppost);
Utils.log("response:"+ response);
HttpEntity entity = response.getEntity();
String responseAsText = EntityUtils.toString(entity);
Utils.log("daftar isi studio: " + responseAsText);
JSONArray json = new JSONArray(responseAsText);
for (int i = 0; i < json.length(); i++) {
jsonobject = json.getJSONObject(i);
final String studio_name = jsonobject.getString("studio_name");
final String address = jsonobject.getString("address");
final String website = jsonobject.getString("website");
final String seo_url = jsonobject.getString("seo_url");
Utils.log("studio_name: " + studio_name);
Country country = new Country(studio_name,address, "Website:"+ website,"Fasilitas:"+ seo_url);
countryList.add(country);
}
}
catch (Exception e)
{
/*Toast.makeText(context,
"user not registered", Toast.LENGTH_SHORT).show();*/
Log.e(LOG_TAG, String.format("Error during login: %s", e.getMessage()));
}
return "processing";
}
protected void onPostExecute(Boolean result) {
//dialog.cancel();
//create an ArrayAdaptar from the String Array
dataAdapter = new MyCustomAdapter(context,
R.layout.country_info, countryList);
//enables filtering for the contents of the given ListView
ListView listView = (ListView) findViewById(R.id.listView1);
// Assign adapter to ListView
listView.setAdapter(dataAdapter);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
Country country = (Country) parent.getItemAtPosition(position);
Toast.makeText(getApplicationContext(),
country.getCode(), Toast.LENGTH_SHORT).show();
Intent intent = new Intent(context, checkin.class);
startActivity(intent);
}
});
EditText myFilter = (EditText) findViewById(R.id.myFilter);
myFilter.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
dataAdapter.getFilter().filter(s.toString());
}
});
}
}

How to post a simple image from Android to server using post method

How posting of Image works in android
I am a newbie & i am looking for a step-by step instructions on how
posting of images take place in android
Are there any good sources of information in the internet to learn
this
All i am trying to learn is get an image from imageview and post it
to server
What i have tried ?
i have learnt posting strings to server
Here is how i post srtings to server
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="24dp"
android:layout_marginTop="32dp"
android:clickable="false"
android:src="#drawable/ic_launcher" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/imageView1"
android:text="Click to upload Image"
android:textSize="15dp" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/NAME_EDIT_TEXT_ID"
android:layout_alignParentLeft="true"
android:clickable="false"
android:text="NAME"
android:textSize="20dp"
android:textStyle="bold" />
<EditText
android:id="#+id/NAME_EDIT_TEXT_ID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/CITY_EDIT_TEXT_ID"
android:layout_alignRight="#+id/button1"
android:layout_marginBottom="30dp"
android:ems="10" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/CITY_EDIT_TEXT_ID"
android:layout_alignLeft="#+id/textView2"
android:clickable="false"
android:text="CITY"
android:textSize="20dp"
android:textStyle="bold" />
<EditText
android:id="#+id/CITY_EDIT_TEXT_ID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/NAME_EDIT_TEXT_ID"
android:layout_centerVertical="true"
android:ems="10" />
<Button
android:id="#+id/SUBMIT_BUTTON_ID"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView2"
android:layout_alignParentBottom="true"
android:layout_marginBottom="47dp"
android:text="SUBMIT" />
</RelativeLayout>
MainActivity.java
public class MainActivity extends Activity {
Button submit;
EditText name, City;
ProgressDialog pDialog;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
submit = (Button) findViewById(R.id.SUBMIT_BUTTON_ID);
name = (EditText) findViewById(R.id.NAME_EDIT_TEXT_ID);
City = (EditText) findViewById(R.id.CITY_EDIT_TEXT_ID);
submit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
new MainTest().execute();
}
});
}
public void postData() {
// Create a new HttpClient and Post Header
// You can use NameValuePair for add data to post server and yes you can
// also append your desire data which you want to post server.
// Like:
// yourserver_url+"name="+name.getText().toString()+"city="+City.getText().toString()
String newurl = "?" + "Key=" + name.getText().toString();
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://My-URL"+newurl);
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("Name", name.getText()
.toString()));
nameValuePairs.add(new BasicNameValuePair("city", City.getText()
.toString()));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
Log.v("Response", response.toString());
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
public class MainTest extends AsyncTask<String, Integer, String> {
#Override
protected void onPreExecute() {
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Loading..");
pDialog.setIndeterminate(true);
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected String doInBackground(String... params) {
postData();
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
// data=jobj.toString();
pDialog.dismiss();
}
}
}
Now how can i modify the code so that i get the image from imageview and send it to the server ?
Any guidance would be helpful
I am a newbie ,so please go easy on with answers
Thanks

Following is a scenario that indicates how image transforms from one format to another format and finally back to original format.
try following code
Android side
private void uploadToServer(byte[] data) {
Bitmap bitmapOrg = BitmapFactory.decodeByteArray(data, 0, data.length);
ByteArrayOutputStream bao = new ByteArrayOutputStream();
bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao);
byte[] ba = bao.toByteArray();
String ba1 = Base64.encodeBytes(ba);
final ArrayList<NameValuePair> nameValuePairs = new
ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("image", ba1));
Thread t = new Thread() {
#Override
public void run() {
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new
HttpPost("http://www.yoururl.com");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
// HttpEntity entity = response.getEntity();
// is = entity.getContent();
// String the_string_response =
// convertResponseToString(response);
// Log.e("log_tag", "Image Uploaded "+the_string_response);
} catch (Exception e) {
Log.e("log_tag", "Error in http connection " + e.toString());
}
}
};
}
Server side
<?php
$base=$_REQUEST['image'];
echo $base;
// base64 encoded utf-8 string
$binary=base64_decode($base);
// binary, utf-8 bytes
header('Content-Type: bitmap; charset=utf-8');
// print($binary);
//$theFile = base64_decode($image_data);
$file = fopen('test.jpg', 'wb');
fwrite($file, $binary);
fclose($file);
echo '<img src=test.jpg>';
?>
Complete Tutorial

You have use multi part to post images to the server from android
public static JSONObject multiPart(final String url,Bitmap bm) throws Exception
{
HttpResponse response = null ;
InputStream is = null;
BufferedReader in = null;
JSONObject jObject = null;
HttpPost httppost = new HttpPost(url);
MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
HttpClient httpClient = getHttpClient();
if(bm!=null){
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bm.compress(CompressFormat.PNG, 75, bos);
byte[] data = bos.toByteArray();
ByteArrayBody bab = new ByteArrayBody(data, name+".png");
entity.addPart("file", bab);
}
httppost.setEntity(entity);
try {
response = httpClient.execute(httppost);
HttpEntity resEntity = response.getEntity();
is = resEntity.getContent();
in = new BufferedReader(new InputStreamReader(is, "iso-8859-1"),
1024 * 4);
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String result = "";
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
result = sb.toString();
jObject = new JSONObject(result);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
}
finally {
in.close();
}
// jObject.getString(name);
return jObject;
}
First convert your image to bit map and then pass the bitmap to this method.And dont forget to add the following jar to libs:- httpmime-4.2-beta1.jar,apache-mime4j-0.6.1.jar

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