L'evento OnListItemClick non funziona

Sono stato affrontato un problema … esistono cinque diverse classi di Java MainActivity , Application , ApplicationAdapter , FetchData , FetchDataListener .. Sto vincolando dati mysql da api in ListView … ma sto cercando di sparare un evento click su ListView ma sto ottenendo errori …. qui è il codice …

MainActivity.Java

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  •  @Override public void onFetchComplete(List<Application> data) { if(dialog != null) dialog.dismiss(); ApplicationAdapter adapter = new ApplicationAdapter(this, data); setListAdapter(adapter); } @Override public void onListItemClick(ListView l, View v, int position, long id) { Application app= new Application(); int p =app.getPosition(position); Toast.makeText(this,p,Toast.LENGTH_LONG).show(); } 

    ApplicationAdapter.Java

     public class ApplicationAdapter extends ArrayAdapter<Application> { private List<Application> items; public ApplicationAdapter(Context context, List<Application> items) { super(context, R.layout.app_custom_list, items); this.items = items; } @Override public int getCount() { return items.size(); } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; if(v == null) { LayoutInflater li = LayoutInflater.from(getContext()); v = li.inflate(R.layout.app_custom_list, null); } Application app = items.get(position); if(app != null) { ImageView icon = (ImageView)v.findViewById(R.id.appIcon); TextView titleText = (TextView)v.findViewById(R.id.titleTxt); LinearLayout ratingCntr = (LinearLayout)v.findViewById(R.id.ratingCntr); TextView dlText = (TextView)v.findViewById(R.id.dlTxt); if(icon != null) { Resources res = getContext().getResources(); String sIcon = "com.sj.jsondemo:drawable/" + app.getIcon(); icon.setImageDrawable(res.getDrawable(res.getIdentifier(sIcon, null, null))); } if(titleText != null) titleText.setText(app.getTitle()); if(dlText != null) { NumberFormat nf = NumberFormat.getNumberInstance(); dlText.setText(nf.format(app.getTotalDl())+" dl"); } if(ratingCntr != null && ratingCntr.getChildCount() == 0) { for(int i=1; i<=5; i++) { ImageView iv = new ImageView(getContext()); if(i <= app.getRating()) { iv.setImageDrawable(getContext() .getResources() .getDrawable(R.drawable.start_checked)); } else { iv.setImageDrawable(getContext() .getResources() .getDrawable(R.drawable.start_unchecked)); } ratingCntr.addView(iv); } } } return v; } } 

    Application.java

     public class Application { private String title; private long totalDl; private int rating; private String icon; public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public long getTotalDl() { return totalDl; } public void setTotalDl(long totalDl) { this.totalDl = totalDl; } public int getRating() { return rating; } public void setRating(int rating) { this.rating = rating; } public String getIcon() { return icon; } public void setIcon(String icon) { this.icon = icon; } } 

    get errori …

      06-20 14:28:18.937: I/Choreographer(3740): Skipped 45 frames! The application may be doing too much work on its main thread. 06-20 14:28:20.267: W/ResourceType(3740): No package identifier when getting value for resource number 0x00000000 06-20 14:28:20.277: D/AndroidRuntime(3740): Shutting down VM 06-20 14:28:20.277: W/dalvikvm(3740): threadid=1: thread exiting with uncaught exception (group=0xb2a31ba8) 06-20 14:28:20.367: E/AndroidRuntime(3740): FATAL EXCEPTION: main 06-20 14:28:20.367: E/AndroidRuntime(3740): Process: com.sj.jsondemo, PID: 3740 06-20 14:28:20.367: E/AndroidRuntime(3740): android.content.res.Resources$NotFoundException: String resource ID #0x0 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.content.res.Resources.getText(Resources.java:244) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.widget.Toast.makeText(Toast.java:268) 06-20 14:28:20.367: E/AndroidRuntime(3740): at com.sj.jsondemo.MainActivity.onListItemClick(MainActivity.java:41) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.app.ListActivity$2.onItemClick(ListActivity.java:319) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.widget.AdapterView.performItemClick(AdapterView.java:299) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.widget.AbsListView.performItemClick(AbsListView.java:1113) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2904) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.widget.AbsListView$3.run(AbsListView.java:3638) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.os.Handler.handleCallback(Handler.java:733) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.os.Handler.dispatchMessage(Handler.java:95) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.os.Looper.loop(Looper.java:136) 06-20 14:28:20.367: E/AndroidRuntime(3740): at android.app.ActivityThread.main(ActivityThread.java:5017) 06-20 14:28:20.367: E/AndroidRuntime(3740): at java.lang.reflect.Method.invokeNative(Native Method) 06-20 14:28:20.367: E/AndroidRuntime(3740): at java.lang.reflect.Method.invoke(Method.java:515) 06-20 14:28:20.367: E/AndroidRuntime(3740): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 06-20 14:28:20.367: E/AndroidRuntime(3740): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 06-20 14:28:20.367: E/AndroidRuntime(3740): at dalvik.system.NativeStart.main(Native Method) 06-20 14:28:23.067: I/Process(3740): Sending signal. PID: 3740 SIG: 9 

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