java.lang.IndexOutOfBoundsException при удалении записи

Question

Я кодирую приложение для Android. Однако у меня проблема с удалением записи в sqlite. Можете ли вы помочь мне решить проблему. При нажатии кнопки удаления LogCat появится проблема:

java.lang.IndexOutOfBoundsException: Invalid index 1, size is 0 

Это код:

public boolean onContextItemSelected(MenuItem item) { 

    switch (item.getItemId()) { 
    case R.id.Delete: 
     int itemId = item.getItemId(); 
     AdapterView.AdapterContextMenuInfo menuinfo = (AdapterContextMenuInfo) item.getMenuInfo(); 

     dm.delete(menuinfo.id); 
     list.remove(menuinfo.position); 

     popupToast(" records deleted"); 
     displayListScreen(); 

     return true; 

    default: 
     return super.onContextItemSelected(item); 
    } 
}` 

Это код базы данных:

public void delete(long id) { 
    String where = "id = " + id; 
    db.delete(TABLE_NAME, where, null); 
} 

Editted ....

Жаль вас, ребята, в первый раз, когда я принимаю участие. Теперь я отправлю его вам, ребята. LogCat

10-28 17:51:03.586: D/libEGL(3831): loaded /system/lib/egl/libEGL_adreno200.so 
10-28 17:51:03.586: D/libEGL(3831): loaded /system/lib/egl/libGLESv1_CM_adreno200.so 
10-28 17:51:03.586: D/libEGL(3831): loaded /system/lib/egl/libGLESv2_adreno200.so 
10-28 17:51:03.596: I/Adreno200-EGL(3831): <qeglDrvAPI_eglInitialize:294>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB.04.01.01.00.036_msm8960_JB_CL2644550_release_AU (CL2644550) 
10-28 17:51:03.596: I/Adreno200-EGL(3831): Build Date: 07/31/12 Tue 
10-28 17:51:03.596: I/Adreno200-EGL(3831): Local Branch: 
10-28 17:51:03.596: I/Adreno200-EGL(3831): Remote Branch: quic/master 
10-28 17:51:03.596: I/Adreno200-EGL(3831): Local Patches: NONE 
10-28 17:51:03.596: I/Adreno200-EGL(3831): Reconstruct Branch: AU_LINUX_ANDROID_JB.04.01.01.00.036 + NOTHING 
10-28 17:51:03.626: D/OpenGLRenderer(3831): Enabling debug mode 0 
10-28 17:51:13.856: D/AndroidRuntime(3831): Shutting down VM 
10-28 17:51:13.856: W/dalvikvm(3831): threadid=1: thread exiting with uncaught exception (group=0x415f2930) 
10-28 17:51:13.896: E/AndroidRuntime(3831): FATAL EXCEPTION: main 
10-28 17:51:13.896: E/AndroidRuntime(3831): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at java.util.ArrayList.remove(ArrayList.java:399) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at example.coursework.MainActivity.onContextItemSelected(MainActivity.java:135) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.app.Activity.onMenuItemSelected(Activity.java:2566) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.policy.impl.PhoneWindow$DialogMenuCallback.onMenuItemSelected(PhoneWindow.java:3899) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.view.menu.MenuDialogHelper.onClick(MenuDialogHelper.java:167) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.app.AlertController$AlertParams$3.onItemClick(AlertController.java:941) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.widget.AdapterView.performItemClick(AdapterView.java:298) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.widget.AbsListView.performItemClick(AbsListView.java:1100) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.widget.AbsListView$PerformClick.run(AbsListView.java:2749) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.widget.AbsListView$1.run(AbsListView.java:3423) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.os.Handler.handleCallback(Handler.java:725) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.os.Handler.dispatchMessage(Handler.java:92) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.os.Looper.loop(Looper.java:137) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at android.app.ActivityThread.main(ActivityThread.java:5227) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at java.lang.reflect.Method.invoke(Method.java:511) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) 
10-28 17:51:13.896: E/AndroidRuntime(3831):  at dalvik.system.NativeStart.main(Native Method) 
10-28 17:51:15.158: I/Process(3831): Sending signal. PID: 3831 SIG: 9 

MainActivity.java

public class MainActivity extends Activity implements OnClickListener { 
    TextView selection; 
    public int idToModify; 
    DataManipulator dm; 
    List<String[]> list = new ArrayList<String[]>(); 
    List<String[]> names2 = null; 
    String[] stg1; 

    // List view 
    private ListView lv; 

    // Listview Adapter 
    ArrayAdapter<String> adapter; 

    // Search EditText 
    EditText inputSearch; 

    // ArrayList for Listview 
    ArrayList<HashMap<String, String>> productList; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     View button1Click = findViewById(R.id.addButton); 

     button1Click.setOnClickListener(this); 

     dm = new DataManipulator(this); 
     names2 = dm.selectAll(); 

     stg1 = new String[names2.size()]; 

     int x = 0; 
     String stg; 

     for (String[] name : names2) { 
      stg = "Name: " + name[1] + "\n" + "Gender: " + name[2] + "\n" 
        + "Height: " + name[3] + "\n" + "Age: " + name[4] + "\n" 
        + "Hair Color: " + name[5] + "\n" + "Comment: " + name[6] 
        + "\n" + "Phone Number: " + name[7]; 

      stg1[x] = stg; 
      x++; 
     } 

     // Listview Data 

     lv = (ListView) findViewById(R.id.list_view1); 
     inputSearch = (EditText) findViewById(R.id.inputSearch); 
     registerForContextMenu(lv); 

     // Adding items to listview 
     adapter = new ArrayAdapter<String>(this, R.layout.list_item, 
       R.id.product_name, stg1); 
     lv.setAdapter(adapter); 

     /** 
     * Enabling Search Filter 
     * */ 
     inputSearch.addTextChangedListener(new TextWatcher() { 

      @Override 
      public void onTextChanged(CharSequence cs, int arg1, int arg2, 
        int arg3) { 
       // When user changed the Text 
       MainActivity.this.adapter.getFilter().filter(cs); 
      } 

      @Override 
      public void beforeTextChanged(CharSequence arg0, int arg1, 
        int arg2, int arg3) { 
       // TODO Auto-generated method stub 

      } 

      @Override 
      public void afterTextChanged(Editable arg0) { 
       // TODO Auto-generated method stub 
      } 
     }); 
    } 

    // Create Context Menu 
    public void onCreateContextMenu(ContextMenu menu, View v, 
      ContextMenuInfo menuInfo) { 
     AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo; 
     menu.setHeaderTitle(stg1[info.position]); 
     super.onCreateContextMenu(menu, v, menuInfo); 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.menu.main, menu); 
    } 

    // When User Selected Contexted Menu 
    @Override 
    public boolean onContextItemSelected(MenuItem item) { 

     switch (item.getItemId()) { 
     case R.id.Delete: 
      int itemId = item.getItemId(); 
      AdapterView.AdapterContextMenuInfo menuinfo = (AdapterContextMenuInfo) item.getMenuInfo(); 

      dm.delete(menuinfo.id); 
      list.remove(menuinfo.position); 






      popupToast(" records deleted"); 
      displayListScreen(); 

      return true; 

     default: 
      return super.onContextItemSelected(item); 
     } 
    } 


    /*private void deleteRecords() { 
     // Create and display the Alert dialog 
     new AlertDialog.Builder(this) 
       .setMessage("Do you really want to delete selected records?") 
       .setNegativeButton("No", new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int which) { 

        } 
       }) 
       .setPositiveButton("Yes", 
         new DialogInterface.OnClickListener() { 

          @Override 
          public void onClick(DialogInterface dialog, 
            int which) { 

           int position = 0; 
           String[] delete = names2.get(position); 
           String idString = delete[(position)]; 
           long idLong = Long.valueOf(idString); 
           dm.delete(idLong); 
           popupToast(" records deleted"); 
           displayListScreen(); 

          } 
         }).show(); 

    }*/ 

    private void popupToast(String message) { 
     Toast.makeText(this, message, Toast.LENGTH_LONG).show(); 
    } 

    private void displayListScreen() { 
     startActivity(new Intent(this, MainActivity.class)); 
    } 

    @Override 
    public void onClick(View v) { 
     // TODO Auto-generated method stub 
     // TODO Auto-generated method stub 
     switch (v.getId()) { 

     case R.id.addButton: 
      Intent i = new Intent(this, Coursework.class); 
      startActivity(i); 
      break; 

     } 
    } 

} 

Извините и спасибо так много

Answer 1

Ваш вопрос не хватает деталей, но все-таки, это единственное место в коде, который отвечал вы могли бы получить IndexOutOfBoundsException исключение эта линия:

list.remove(menuinfo.position); 

Предполагая, что list является экземпляром java.util.List, вы получаете это исключение, потому что либо menuinfo.position меньше нуля или больше числа элементов в list.

Непосредственным исправление будет:

if (menuinfo.position < 0 || menuinfo.position >= list.size()) { 
    // Warning, invalid position 
} else { 
    list.remove(menuinfo.position); 
}