java - 如何启用触摸按钮的声音效果？

Question

如果我实现OnClickListener，声音效果将在单击按钮时起作用。在实现OnTouchListener声音效果时，触摸它不起作用。那么如何在实现时启用音效OnTouchListener呢？

编辑：

如果我使用点击方法，这是代码：

public class CalculatorActivity extends Activity implements OnClickListener
{
    //...
    private Button btn1;
    private EditText edLCD;
    //...

    public void onCreate(Bundle savedInstanceState)
    {
        //...
        btn1 = (Button) findViewById(R.id.d1);
        btn1.setOnClickListener(this);

        edLCD = (EditText) findViewById(R.id.edLCD);
    }

    //...

    public void onClick(View v)
    {
        edLCD.setText(edLCD.getText().toString() + "1");
    }
}

如果我使用触摸方法，这是代码：

public class CalculatorActivity extends Activity implements OnTouchListener
{
    //...
    private Button btn1;
    private EditText edLCD;
    //...

    public void onCreate(Bundle savedInstanceState)
    {
        //...
        btn1 = (Button) findViewById(R.id.d1);
        btn1.setOnTouchListener(this);

        edLCD = (EditText) findViewById(R.id.edLCD);
    }

    //...

    public boolean onTouch(View v, MotionEvent event)
    {
        if(event.getAction() == MotionEvent.ACTION_DOWN)
        {
            edLCD.setText(edLCD.getText().toString() + "1");
        }
        return true;
    }
}

Answer 1

尝试...

public boolean onTouch(View v, MotionEvent event)
{
    if(event.getAction() == MotionEvent.ACTION_DOWN)
    {
        v.playSoundEffect(SoundEffectConstants.CLICK);
        edLCD.setText(edLCD.getText().toString() + "1");
    }
    return true;
}