在执行onclick时清除文本视图值

Question

I do have the clear function but still the value is not clear. May i know how to solve this problem ?

public class abc extends MenuActivity implements OnClickListener{


    EditText et3;
    @Override 
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.safebox_flow);


        et3 = (EditText)findViewById(R.id.EditText02);
        et3.setText(String.valueOf('0'));
        et3.setOnClickListener(this);
    }

    @Override 
    public void onClick(View v){
        //Also here check the edittext02 id thats set in the xml layout
        if(v.getId() == R.id.EditText02){
           et3.setText("");
        }
    }


}

• I have to double click it only can clear.

Answer 1

just try :

 et3.setText(""); 

instead of :

 et3.setText(null); 

Answer 2

try this:

 et3 = (EditText)findViewById(R.id.EditText02);

    et3.setOnClickListener(this);

   @Override 
    public void onClick(View v){
           if(v.getId() == R.id.EditText02){
              et3.setText("");
           }
    }

Answer 3

The below part of your code goes into the onCreate method.

//Here make sure **EditText02** is the id that you have declared in XML
et3 = (EditText) findViewById(R.id.EditText02);  //input type for edittext02 is number

et3.setOnClickListener(this);


public void onClick(View v){
       //Also here check the edittext02 id thats set in the xml layout
       if(v.getId() == R.id.EditText02){
          et3.setText("");
       }
}

Also ensure that your class implements OnClickListener

//example below
public class MainActivity extends Activity implements OnClickListener {

Please comment below if you still face problems. Hope this helps!