I am reading the .OBJ file which is in asset folder. But I am getting exception while reading the file. Even I debug the project on eclipse but I could find the reason for this.
Please help me
Thanks in advance.
/**
* Load Object Asynchronous.
* #author Ajay
*/
private class ObjLoaderAsync extends AsyncTask<Void, Void, Void> {
private ProgressDialog progressDialog;
#Override
protected void onPreExecute() {
try {
progressDialog = new ProgressDialog(localContext);
progressDialog.setTitle(localContext
.getString(R.string.app_name));
progressDialog.setMessage(localContext
.getString(R.string.please_wait));
progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progressDialog.setCancelable(true);
progressDialog.show();
} catch (Exception e) {
}
}
#Override
protected Void doInBackground(Void... arg0) {
try {
mr[getCurrentPosition()] = new ModelRenderer(localContext,
localContext.getAssets().open(RendererView.objName));
} catch (java.io.IOException e) {
Log.v("DemoRendererView", "loading model: " + e);
}
return null;
}
#Override
protected void onPostExecute(Void param) {
try {
progressDialog.cancel();
} catch (Exception e) {
}
}
}
public ModelRenderer(Context paramContext, InputStream localFileInputStream) throws FileNotFoundException {
ModelStaticClassTransfer.value = -777.0F;
while (true) {
try {
i = localFileInputStream.read();
if (i != -1)
continue;
localFileInputStream.close();
if ((char) i == 'v') {
i = localFileInputStream.read();
if ((char) i != ' ')
continue;
this.verticeCounter = (1 + this.verticeCounter);
continue;
}
if ((char) i == 'f') {
i = localFileInputStream.read();
if ((char) i != ' ')
continue;
this.indexCounter = (1 + this.indexCounter);
continue;
}
int j = localFileInputStream.read();
i = j;
} catch (IOException localIOException) {
localIOException.printStackTrace();
return;
}
}
}
Error Trace
09-12 12:54:57.516: E/AndroidRuntime(29949): FATAL EXCEPTION: AsyncTask #2
09-12 12:54:57.516: E/AndroidRuntime(29949): java.lang.RuntimeException: An error occured while executing doInBackground()
09-12 12:54:57.516: E/AndroidRuntime(29949): at android.os.AsyncTask$3.done(AsyncTask.java:278)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
09-12 12:54:57.516: E/AndroidRuntime(29949): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.lang.Thread.run(Thread.java:856)
09-12 12:54:57.516: E/AndroidRuntime(29949): Caused by: java.lang.NullPointerException: asset
09-12 12:54:57.516: E/AndroidRuntime(29949): at android.content.res.AssetManager.readAssetChar(Native Method)
09-12 12:54:57.516: E/AndroidRuntime(29949): at android.content.res.AssetManager.access$200(AssetManager.java:35)
09-12 12:54:57.516: E/AndroidRuntime(29949): at android.content.res.AssetManager$AssetInputStream.read(AssetManager.java:548)
09-12 12:54:57.516: E/AndroidRuntime(29949): at com.amplimesh.models.ModelRenderer.<init>(ModelRenderer.java:64)
09-12 12:54:57.516: E/AndroidRuntime(29949): at com.amplimesh.models.ModelGLRenderer$ObjLoaderAsync.doInBackground(ModelGLRenderer.java:138)
09-12 12:54:57.516: E/AndroidRuntime(29949): at com.amplimesh.models.ModelGLRenderer$ObjLoaderAsync.doInBackground(ModelGLRenderer.java:1)
09-12 12:54:57.516: E/AndroidRuntime(29949): at android.os.AsyncTask$2.call(AsyncTask.java:264)
09-12 12:54:57.516: E/AndroidRuntime(29949): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
09-12 12:54:57.516: E/AndroidRuntime(29949): ... 5 more
I think you are mistaken with the meaning of the continue keyword. This keyword means that the loop jumps immediately to the next iteration without executing the rest of the code in the loop block.
In your case, it means that this code
i = localFileInputStream.read();
if (i != -1)
continue;
localFileInputStream.close();
if ((char) i == 'v') {
i = localFileInputStream.read();
closes the inputStream, and then tries to read from it. You algorithm is not very clear because of all the continues, so I can't really tell you how to fix that.
#Override
protected void onPostExecute(Void param) {
try {
mr[getCurrentPosition()] = new ModelRenderer(localContext,
localContext.getAssets().open(RendererView.objName));
dialog.cancle();
} catch (java.io.IOException e) {
Log.v("DemoRendererView", "loading model: " + e);
}
}
please check this...
you start with
try {
i = localFileInputStream.read();
if (i != -1)
continue;
localFileInputStream.close();
so, you are closing the stream and after that you are trying to read again from it. Also you are running this inside an infinite loop and exit from it only in a the catch section. Consider closing the stream after you are done reading it.
Related
I got error when I tried to upload all of the images. I use for to loop the process, but still got error in looping. if i don't use for, it still can upload the image but only 1 image that will be uploaded. how can I solve this?
UploadActivity.java
Intent intent = getIntent();
filePath = intent.getStringExtra("filePath");
ArrayList<String> flpath = new ArrayList<String>();
SharedPreferences prefs = getSharedPreferences("SavedFilePathsJSONArray",
Context.MODE_PRIVATE);
String myJSONArrayString = prefs.getString("SavedFilePathsJSONArray",
"");
if (!myJSONArrayString.isEmpty()) {
JSONArray jsonArray = null;
try {
jsonArray = new JSONArray(myJSONArrayString);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for (int i = 0; i < jsonArray.length(); i++) {
try {
flpath.add(jsonArray.get(i).toString());
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
flpath.add(filePath);
JSONArray mJSONArray = new JSONArray(flpath);
SharedPreferences.Editor editor = prefs.edit();
editor.putString("SavedFilePathsJSONArray", mJSONArray.toString()).commit();
for (int i = 0; i < flpath.size(); i++) {
imgFile = new File(flpath.get(i));
if (imgFile.exists()) {
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath(),options);
ImageView myImage = new ImageView(this);
myImage.setMaxHeight(100);
myImage.setMaxWidth(100);
myImage.setImageBitmap(myBitmap);
layout2.addView(myImage);
}
}
private class UploadFileToServer extends AsyncTask<Void, Integer, String> {
#Override
protected void onPreExecute() {
// setting progress bar to zero
progressBar.setProgress(0);
super.onPreExecute();
}
#Override
protected void onProgressUpdate(Integer... progress) {
// Making progress bar visible
progressBar.setVisibility(View.VISIBLE);
// updating progress bar value
progressBar.setProgress(progress[0]);
// updating percentage value
txtPercentage.setText(String.valueOf(progress[0]) + "%");
}
#Override
protected String doInBackground(Void... params) {
return uploadFile();
}
#SuppressWarnings("deprecation")
private String uploadFile() {
String responseString = null;
for (int i = 0; i < flPath.size(); i++) {
File file = new File( flPath.get(i));
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(Config.FILE_UPLOAD_URL);
try {
AndroidMultiPartEntity entity = new AndroidMultiPartEntity(
new ProgressListener() {
#Override
public void transferred(long num) {
publishProgress((int) ((num / (float) totalSize) * 100));
}
});
// Adding file data to http body
entity.addPart("image", new FileBody(file));
// Extra parameters if you want to pass to server
entity.addPart("website",
new StringBody("www.androidhive.info"));
entity.addPart("email", new StringBody("abc#gmail.com"));
totalSize = entity.getContentLength();
httppost.setEntity(entity);
// Making server call
HttpResponse response = httpclient.execute(httppost);
HttpEntity r_entity = response.getEntity();
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
// Server response
responseString = EntityUtils.toString(r_entity);
} else {
responseString = "Error occurred! Http Status Code: "
+ statusCode;
}
} catch (ClientProtocolException e) {
responseString = e.toString();
} catch (IOException e) {
responseString = e.toString();
}
}
return responseString;
}
Config.Java
public class Config {
public static final String FILE_UPLOAD_URL = "http://....";
// Directory name to store captured images and videos
public static final String IMAGE_DIRECTORY_NAME = "andrd_upload";
}
error logcat
01-27 16:23:45.940: W/dalvikvm(15986): threadid=12: thread exiting with uncaught exception (group=0x40fe7438)
01-27 16:23:45.950: E/AndroidRuntime(15986): FATAL EXCEPTION: AsyncTask #1
01-27 16:23:45.950: E/AndroidRuntime(15986): java.lang.RuntimeException: An error occured while executing doInBackground()
01-27 16:23:45.950: E/AndroidRuntime(15986): at android.os.AsyncTask$3.done(AsyncTask.java:299)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
01-27 16:23:45.950: E/AndroidRuntime(15986): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.lang.Thread.run(Thread.java:856)
01-27 16:23:45.950: E/AndroidRuntime(15986): Caused by: java.lang.NullPointerException
01-27 16:23:45.950: E/AndroidRuntime(15986): at com.camerafileupload.UploadActivity$UploadFileToServer.uploadFile(UploadActivity.java:228)
01-27 16:23:45.950: E/AndroidRuntime(15986): at com.camerafileupload.UploadActivity$UploadFileToServer.doInBackground(UploadActivity.java:221)
01-27 16:23:45.950: E/AndroidRuntime(15986): at com.camerafileupload.UploadActivity$UploadFileToServer.doInBackground(UploadActivity.java:1)
01-27 16:23:45.950: E/AndroidRuntime(15986): at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-27 16:23:45.950: E/AndroidRuntime(15986): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
01-27 16:23:45.950: E/AndroidRuntime(15986): ... 5 more
01-27 16:23:46.130: D/HardwareRenderer(15986): draw surface is valid dirty= null
01-27 16:23:46.180: D/HardwareRenderer(15986): draw surface is valid dirty= null
01-27 16:23:46.220: D/HardwareRenderer(15986): draw surface is valid dirty= null
01-27 16:25:29.910: D/dalvikvm(15986): WAIT_FOR_CONCURRENT_GC blocked 0ms
01-27 16:25:29.950: D/dalvikvm(15986): GC_EXPLICIT freed 223K, 8% free 15337K/16583K, paused 2ms+4ms, total 38ms
ScreenShoot
Edit: i put the error logcat and the screenshoot of the error page (UploadActivity.java).
I would like use JSOUP in two Activity, but in both I have same code.
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button titlebutton = (Button) findViewById(R.id.button1);
titlebutton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// Execute Title AsyncTask
new AsyncTest().execute();
}
});
}
private class AsyncTest extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) {
Connection.Response response = null;
try {
response = Jsoup.connect("http://example.com")
.data("param1", "aaaa")
.data("param2", "bbbb")
.data("param3", "ccc")
.data("param4", "dd")
.execute();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
}
and:
public class Second extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
get();
}
public Connection.Response get()
{
Connection.Response response = null;
try {
response = Jsoup.connect("http://example.com")
.data("param1", "aaaa")
.data("param2", "bbbb")
.data("param3", "ccc")
.data("param4", "dd")
.execute();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
}
This is only example - I use in Second Activity a lot of operation with JSOUP, so I would like have function get in this class and import it into MainActivity.
I try in MainActivity:
private class AsyncTest extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) {
Connection.Response response = null;
response = new Second().get();
return null;
}
}
but this return errors:
08-25 21:18:00.164: W/dalvikvm(1552): threadid=11: thread exiting with uncaught exception (group=0x409961f8)
08-25 21:18:00.174: E/AndroidRuntime(1552): FATAL EXCEPTION: AsyncTask #1
08-25 21:18:00.174: E/AndroidRuntime(1552): java.lang.RuntimeException: An error occured while executing doInBackground()
08-25 21:18:00.174: E/AndroidRuntime(1552): at android.os.AsyncTask$3.done(AsyncTask.java:278)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
08-25 21:18:00.174: E/AndroidRuntime(1552): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.lang.Thread.run(Thread.java:856)
08-25 21:18:00.174: E/AndroidRuntime(1552): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
08-25 21:18:00.174: E/AndroidRuntime(1552): at android.os.Handler.<init>(Handler.java:121)
08-25 21:18:00.174: E/AndroidRuntime(1552): at android.app.Activity.<init>(Activity.java:735)
08-25 21:18:00.174: E/AndroidRuntime(1552): at com.example.js.Second.<init>(Second.java:11)
08-25 21:18:00.174: E/AndroidRuntime(1552): at com.example.js.MainActivity$AsyncTest.doInBackground(MainActivity.java:35)
08-25 21:18:00.174: E/AndroidRuntime(1552): at com.example.js.MainActivity$AsyncTest.doInBackground(MainActivity.java:1)
08-25 21:18:00.174: E/AndroidRuntime(1552): at android.os.AsyncTask$2.call(AsyncTask.java:264)
08-25 21:18:00.174: E/AndroidRuntime(1552): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
08-25 21:18:00.174: E/AndroidRuntime(1552): ... 5 more
How is the best way to non-repeat code in my example?
Make your AsyncTask public and move it to a separate class (file):
AsyncTest.java:
public class AsyncTest extends AsyncTask<Void, Void, Void> {
...
}
Then in your activities call:
new AsyncTest().execute();
I m developing a quiz based app and in this m trying to jump on some method after some delay time but unfortunately m getting some Run time Error..
Here's that code..
new Timer().schedule(new TimerTask() {
#Override
public void run()
{
resetcolor();
nextpage();
rg.clearCheck();
showdata();
}
}, 6000);
And here's my Log cat Error..
09-12 12:11:06.775: W/dalvikvm(489): threadid=7: thread exiting with uncaught exception (group=0x4001d800)
09-12 12:11:06.789: E/AndroidRuntime(489): FATAL EXCEPTION: Timer-0
09-12 12:11:06.789: E/AndroidRuntime(489): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
09-12 12:11:06.789: E/AndroidRuntime(489): at android.view.ViewRoot.checkThread(ViewRoot.java:2802)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.view.ViewRoot.invalidateChild(ViewRoot.java:607)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:633)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.view.ViewGroup.invalidateChild(ViewGroup.java:2505)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.view.View.invalidate(View.java:5115)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.widget.TextView.invalidateDrawable(TextView.java:3796)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.graphics.drawable.Drawable.invalidateSelf(Drawable.java:300)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.graphics.drawable.DrawableContainer.selectDrawable(DrawableContainer.java:227)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.graphics.drawable.StateListDrawable.onStateChange(StateListDrawable.java:97)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.graphics.drawable.Drawable.setState(Drawable.java:400)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.widget.CompoundButton.drawableStateChanged(CompoundButton.java:271)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.view.View.refreshDrawableState(View.java:7248)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.widget.CompoundButton.setChecked(CompoundButton.java:115)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.widget.RadioGroup.setCheckedStateForView(RadioGroup.java:179)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.widget.RadioGroup.check(RadioGroup.java:159)
09-12 12:11:06.789: E/AndroidRuntime(489): at android.widget.RadioGroup.clearCheck(RadioGroup.java:205)
09-12 12:11:06.789: E/AndroidRuntime(489): at com.example.quizapp.Firstques$1$1.run(Firstques.java:234)
09-12 12:11:06.789: E/AndroidRuntime(489): at java.util.Timer$TimerImpl.run(Timer.java:289)
Rewrite your code as follows:
new Thread(new Runnable() {
#Override
public void run() {
try {
Thread.sleep(6000);
runOnUiThread(new Runnable() {
#Override
public void run() {
resetcolor();
nextpage();
rg.clearCheck();
showdata();
}
});
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}).start();
Your problem is that you cannot touch UI elements from background thread. The code above executes the UI changes in the main thread (also known as "UI thread").
TimerTask runs on a different thread. Ui should be updated or accessed on ui thread. So use runOnUiThread
Inside the timertask run method
new Timer().schedule(new TimerTask() {
#Override
public void run()
{
runOnUiThread(new Runnable() {
#Override
public void run() {
resetcolor();
nextpage();
rg.clearCheck();
showdata();
}
});
}
}, 6000);
Or use a Handler
Handler m_handler;
Runnable m_handlerTask ;
handler= new Handler()
m_handlerTask = new Runnable()
{
#Override
public void run() {
// do something
resetcolor();
nextpage();
rg.clearCheck();
showdata()
m_handler.postDelayed(m_handlerTask, 6000);
}
};
m_handlerTask.run();
To stop the handlerm_handler.removeCallbacks(m_handlerTask)
i get this error in fetching json(null values):
03-21 12:32:02.918: E/AndroidRuntime(20383): FATAL EXCEPTION: AsyncTask #2
03-21 12:32:02.918: E/AndroidRuntime(20383): java.lang.RuntimeException: An error occured while executing doInBackground()
03-21 12:32:02.918: E/AndroidRuntime(20383): at android.os.AsyncTask$3.done(AsyncTask.java:299)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.lang.Thread.run(Thread.java:856)
03-21 12:32:02.918: E/AndroidRuntime(20383): Caused by: java.lang.NullPointerException
03-21 12:32:02.918: E/AndroidRuntime(20383): at Dic.proj.pkg.notifService$check_last_asyn.doInBackground(notifService.java:253)
03-21 12:32:02.918: E/AndroidRuntime(20383): at Dic.proj.pkg.notifService$check_last_asyn.doInBackground(notifService.java:1)
03-21 12:32:02.918: E/AndroidRuntime(20383): at android.os.AsyncTask$2.call(AsyncTask.java:287)
03-21 12:32:02.918: E/AndroidRuntime(20383): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
03-21 12:32:02.918: E/AndroidRuntime(20383): ... 4 more
and this is my check_last_asyn AsynTask:
// check if notification is available asyntask
class check_last_asyn extends AsyncTask<Void, Integer, Boolean> {
#Override
protected Boolean doInBackground(Void... arg0) {
if(isOnline()){
RestClient client = new RestClient(
"http://mysite.org/api/check_last.php");
client.AddParam("last", String.valueOf(last_notif_no));
try {
client.Execute(RequestMethod.GET);
} catch (Exception e) {
e.printStackTrace();
}
String response = client.getResponse();
if(!response.equals(null)){
update_response = response;
}else{
update_response= "{'update':'no'}";
}
}
return true;
}
}
i know this is because of null values but i dont know how to controll null values in this code...
This should do
if(response!=null && !(response.trim()).equals("")){
update_response = response;
}else{
update_response= "{'update':'no'}";
}
the check should be something like:
if(response != null && !response.equals(""))
I think, String responce var could be null, so just add check for null value:
String responce = client.getResponce();
if (responce == null) {
// As flag, which represents, that there is no answer from service
// Or other logic
return false;
}
// your code
you may control like
if(!TextUtils.isEmpty(response)){
try {
JSONObject jobj = new JSONObject(response);
String stolan_id = null;
Boolean bstolan_id = jobj.has("keyhere");
if(bstolan_id){
stolan_id = jobj.getString("keyhere");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
i have make one android application in that data is coming from server so it's time consuming process so i have created one progress dialog box..
below is my code
#Override
protected void onResume() {
super.onResume();
if (placesListItems != null)
placesListItems.clear();
new LoadPlaces().execute();
}
#Override
public void onPause() {
super.onPause();
if (pDialog != null)
pDialog.dismiss();
}
class LoadPlaces extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage(Html.fromHtml("<b>Search</b><br/>Loading Places..."));
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
GooglePlaces googlePlaces = new GooglePlaces();
try {
double radius = 1000; // 10000 meters
// get nearest places
if (query != null) {
nearPlaces = googlePlaces.search(lat, lon, radius, query);
if (nearPlaces != null) {
for (Place p : nearPlaces.results) {
reference = p.reference;
lat = p.geometry.location.lat;
lon = p.geometry.location.lng;
break;
}
}
}
String types = "bar|restaurant|night_club|gym|health|food|shopping_mall|hospital";
if (reference != null) {
PlaceDetails placeDetails = googlePlaces.getPlaceDetails(reference);
if (placeDetails != null) {
String status = placeDetails.status;
// check place deatils status
// Check for all possible status
if (status.equals("OK")) {
if (placeDetails.result != null) {
lat = placeDetails.result.geometry.location.lat;
lon = placeDetails.result.geometry.location.lng;
nearDeals = googlePlaces.search(lat, lon, radius, types);
In below code if i press home button or screen goes of during fetching data from server (You can say progress dialog box is running) and if i come back to my application i got an error ARRAY INDEX OUT OF BOUND
// int total = ;
for (int i = nearDeals.results.size() - 1; i >= 0; i--) {
// Log.i("WHAT THE HELL",nearPlaces.results.get(i).name);
if (getResult(nearDeals.results.get(i).name, nearDeals.results.get(i).geometry.location.lat,
nearDeals.results.get(i).geometry.location.lng) == 0) {
// nearDeals.results.add(nearPlaces.results.get(i));
nearDeals.results.remove(i);
}
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
below is logcat
09-25 18:23:13.429: W/System.err(4375): java.lang.IndexOutOfBoundsException: Invalid index 15, size is 15
09-25 18:23:13.429: W/System.err(4375): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
09-25 18:23:13.429: W/System.err(4375): at java.util.ArrayList.get(ArrayList.java:311)
09-25 18:23:13.429: W/System.err(4375): at com.eheuristics.android.diegodeals.googleplacesandmaps.MainActivity$LoadPlaces.doInBackground(MainActivity.java:204)
09-25 18:23:13.429: W/System.err(4375): at com.eheuristics.android.diegodeals.googleplacesandmaps.MainActivity$LoadPlaces.doInBackground(MainActivity.java:1)
09-25 18:23:13.429: W/System.err(4375): at android.os.AsyncTask$2.call(AsyncTask.java:185)
09-25 18:23:13.439: W/System.err(4375): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
09-25 18:23:13.439: W/System.err(4375): at java.util.concurrent.FutureTask.run(FutureTask.java:138)
09-25 18:23:13.439: W/System.err(4375): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
09-25 18:23:13.439: W/System.err(4375): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
09-25 18:23:13.439: W/System.err(4375): at java.lang.Thread.run(Thread.java:1019)
if i do not press home key, or do not screen goes off during progress dialog box is running then everything is working fine
//After getting solution from all of you, i have done blow like all suggest but i got another error like blow
LoadPlaces ob;
protected void onResume() {
super.onResume();
if (placesListItems != null)
placesListItems.clear();
ob.execute();
}
#Override
public void onPause() {
super.onPause();
if(ob!=null)
if(ob.getStatus() == AsyncTask.Status.RUNNING){
ob.cancel(true);
}
if (pDialog != null)
pDialog.dismiss();
}
then i got error like below
09-25 18:53:30.609: E/AndroidRuntime(4674): java.lang.RuntimeException: Unable to resume activity {com.eheuristics.android.diegodeals/com.eheuristics.android.diegodeals.googleplacesandmaps.MainActivity}: java.lang.IllegalStateException: Cannot execute task: the task is already running.
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2241)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2256)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:965)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.os.Handler.dispatchMessage(Handler.java:99)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.os.Looper.loop(Looper.java:130)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.app.ActivityThread.main(ActivityThread.java:3835)
09-25 18:53:30.609: E/AndroidRuntime(4674): at java.lang.reflect.Method.invokeNative(Native Method)
09-25 18:53:30.609: E/AndroidRuntime(4674): at java.lang.reflect.Method.invoke(Method.java:507)
09-25 18:53:30.609: E/AndroidRuntime(4674): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
09-25 18:53:30.609: E/AndroidRuntime(4674): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
09-25 18:53:30.609: E/AndroidRuntime(4674): at dalvik.system.NativeStart.main(Native Method)
09-25 18:53:30.609: E/AndroidRuntime(4674): Caused by: java.lang.IllegalStateException: Cannot execute task: the task is already running.
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.os.AsyncTask.execute(AsyncTask.java:380)
09-25 18:53:30.609: E/AndroidRuntime(4674): at com.eheuristics.android.diegodeals.googleplacesandmaps.MainActivity.onResume(MainActivity.java:137)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.app.Activity.performResume(Activity.java:3832)
09-25 18:53:30.609: E/AndroidRuntime(4674): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2231)
09-25 18:53:30.609: E/AndroidRuntime(4674): ... 10 more
You are starting the asynctask every time you show your activity. So, you should cancel the task when exiting (AsyncTask.cancel(true)), or check if it is still running in the onResume method.
In the cases where you get the error onResume() gets called again, starting a new AsyncTask. Now you have multiple AsyncTask simultanously accessing and altering the size of nearDeals.results (you call remove on it). When one asyncTask removes an item from the list, the second asyncTask may run into the ArrayIndexOutOfBounds since the list size has changed.
EDIT: It's actually not the removal of an item, but that you set a new instance of the list in googlePlaces.search and this list may have a different size than the one used by the old asynctask.
Solution: call cancel on your running async tasks in onPause (or in onResume before starting
the new task)