"addurl"버튼을 누르면 강제 종료 오류가 발생합니다.

Question

이것은 대화 상자에 대한 코드가있는 내 활동입니다. 사용자가 버튼을 누르면 대화 상자에 사용자 해당 링크를 데이터베이스에 저장할지 여부.

public class Add_ink extends Activity { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.websearch); 

    Button btn = (Button) findViewById(R.id.add_link); 
    btn.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View v) { 
       showDialog(0);   
     } 
    }); 
    } 
    @Override 
    protected Dialog onCreateDialog(int id){ 
     switch (id){ 
     case 0: 
     return new AlertDialog.Builder(this) 
     .setIcon(R.drawable.help_ov) 
     .setTitle("This is a dialog with simple text") 
     .setPositiveButton("OK",new DialogInterface.OnClickListener() { 


      public void onClick(DialogInterface dialog, int whichButton) { 
       Toast.makeText(getBaseContext(), "OK Clicked", Toast.LENGTH_SHORT).show();    
      } 
     }) 
     .setNegativeButton("Cancel",new DialogInterface.OnClickListener() { 


      public void onClick(DialogInterface dialog, int whichButton) { 
       Toast.makeText(getBaseContext(), "Cancel Clicked", Toast.LENGTH_SHORT).show(); 

      } 
     }) 


     .create(); 
     } 
     return null; 


    } 
} 

Answer 1

Hi The Solutions is 


/*Code*/ 

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.websearch); 

Button btn = (Button) findViewById(R.id.add_link); 
btn.setOnClickListener(new View.OnClickListener() { 

    public void onClick(View v) { 
      showDialog();   
    } 
}); 

public void showDialog() 
{ 
final AlertDialog.Builder builder = new AlertDialog.Builder(this); 
      builder.setMessage("Do you really want to finish ?? You haven't selected any security settings option to activate your app."); 

    builder.setCancelable(false) 
       .setPositiveButton("Yes", 
         new DialogInterface.OnClickListener() { 
          public void onClick(
            @SuppressWarnings("unused") final DialogInterface dialog, 
            @SuppressWarnings("unused") final int id) { 

        Toast.makeText(getBaseContext(), "OK Clicked", Toast.LENGTH_SHORT).show();   
dialog.cancel();   
          } 
         }) 
       .setNegativeButton("No", new DialogInterface.OnClickListener() { 
        public void onClick(final DialogInterface dialog, 
          @SuppressWarnings("unused") final int id) { 

Toast.makeText(getBaseContext(), "Cancel Clicked", Toast.LENGTH_SHORT).show(); 
         dialog.cancel(); 

        } 
       }); 
     final AlertDialog alert = builder.create(); 
     alert.show(); 


}