Android Tutorial => Buttons

Example

Touch events related to a Button can be checked as follows:

public class ExampleClass extends Activity implements View.OnClickListener, View.OnLongClickListener{
    public Button onLong, onClick;

    @Override
    public void onCreate(Bundle sis){
        super.onCreate(sis);
        setContentView(R.layout.layout);
        onLong = (Button) findViewById(R.id.onLong);
        onClick = (Button) findViewById(R.id.onClick);
        // The buttons are created. Now we need to tell the system that
        // these buttons have a listener to check for touch events.
        // "this" refers to this class, as it contains the appropriate event listeners.
        onLong.setOnLongClickListener(this);
        onClick.setOnClickListener(this);

        [OR]

        onClick.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                // Take action. This listener is only designed for one button.
                // This means, no other input will come here.
                // This makes a switch statement unnecessary here.
            }
        });

        onLong.setOnLongClickListener(new View.OnLongClickListener(){
            @Override
            public boolean onLongClick(View v){
                // See comment in onClick.setOnClickListener().
            }
        });
    }

    @Override
    public void onClick(View v) {
        // If you have several buttons to handle, use a switch to handle them.
        switch(v.getId()){
            case R.id.onClick:
                // Take action.
                break;
        }
    }

    @Override
    public boolean onLongClick(View v) {
        // If you have several buttons to handle, use a switch to handle them.
        switch(v.getId()){
            case R.id.onLong:
                // Take action.
                break;
        }
        return false;
    }
}

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Android Handling touch and motion events Buttons

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