How can i use OnLongClick Listener on more than 1 buttons in a onLongClick Method in same class

Question

Here is my Code ...

 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        text = (TextView) findViewById(R.id.textView);
        text.setText("Application Created");
        btn1 = (Button) findViewById(R.id.Mybutton);
        btn1.setOnClickListener(this);
        btn2 = (Button) findViewById(R.id.btn2);
        btn2.setOnClickListener(this);
        btn1.setOnLongClickListener(**this**);*(Error Generated here)*
    }

public boolean onLongClick( View v)
{


    return  true;
}

i am trying to use on long click listener on more than two buttons and handle them in a single method (public boolean onLongClick(View v)) by using switch case. I tried my code but their is an error generated when i pass btn1.setOnLongClickListener(this); "this" in the braces" i am handling this event in the same class.

use switch case in longClick , switch(view.getId()) and identify your buttons with their respective ID's — Muhib Pirani, Jun 14 '17 at 09:52
Thank you so much Sir! For trying to help me but i am facing error in — Sohaib Anwaar, Jun 14 '17 at 09:53
btn1.setOnLongClickListener(**this**);*(Error Generated here)* this section can you please help me in this part — Sohaib Anwaar, Jun 14 '17 at 09:54

score 0 · Answer 1 · answered Jun 14 '17 at 09:54

btn1.setOnLongClickListener(this);

and impliment your class with View.OnLongClickListener

and then override this method

  @Override
public boolean onLongClick(View view) {
    switch(view.getId()){
     case R.id. :
     break;
  }
    return false;
}

score 0 · Answer 2 · answered Jun 14 '17 at 10:03

To use this as OnLongClickListener your class should implements the interface View.OnLongClickListener and it's method, for example:

public class MyActivity extends AppCompatActivity implements View.OnLongClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ...
        btn1.setOnLongClickListener(this);
    }

    @Override
    public boolean onLongClick(View view) {
        // your code here
    }
}

I believe you already did same for btn2.setOnClickListener(this) and OnClickListener interface.

score 0 · Accepted Answer · answered Jun 14 '17 at 10:33

1) Implement your activity with the interface View.OnLongClickListener 2) Override Boolean method will generate as onLongClick, where you can write your switch case for the buttons. 3) initialize the button with setOnLongClickListener(this) as button.setOnLongClickListener(this);[onCreate]

Sample as below-

public class MainActivity extends AppCompatActivity implements View.OnLongClickListener{

    private Button btnOne, btnTwo, btnThree;

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

        btnOne = (Button) findViewById(R.id.idBtnOne);
        btnTwo = (Button) findViewById(R.id.idBtnTwo);
        btnThree = (Button) findViewById(R.id.idBtnThree);

        btnOne.setOnLongClickListener(this);
        btnTwo.setOnLongClickListener(this);
        btnThree.setOnLongClickListener(this);

    }

    @Override
    public boolean onLongClick(View v) {

        switch(v.getId()){
            case R.id.idBtnOne:
                Toast.makeText(MainActivity.this,"Long pressed on Button 1",Toast.LENGTH_LONG).show();
                break;
            case R.id.idBtnTwo:
                Toast.makeText(MainActivity.this,"Long pressed on Button 2",Toast.LENGTH_LONG).show();
                break;
            case R.id.idBtnThree:
                Toast.makeText(MainActivity.this,"Long pressed on Button 3",Toast.LENGTH_LONG).show();
                break;
            default:
                break;

        }

        return false;
    }
}

How can i use OnLongClick Listener on more than 1 buttons in a onLongClick Method in same class

3 Answers3