使用 OnTouchListener 时，如何更改 Android 中 ImageButton 上的图像？
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How can I change the images on an ImageButton in Android when using a OnTouchListener?
提问by codeman
I have the following code which creates an ImageButton and plays a sound when clicked:
我有以下代码，它创建一个 ImageButton 并在单击时播放声音：
ImageButton SoundButton1 = (ImageButton)findViewById(R.id.sound1);
SoundButton1.setImageResource(R.drawable.my_button);
SoundButton1.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN ) {
mSoundManager.playSound(1);
return true;
}
return false;
}
});
The problem is that I want the image on the ImageButton to change when you press it. The OnTouchListener appears to be overriding the touch and not allowing the images to change. As soon as I remove the OnTouchListener, the ImageButton swaps to a different image when pressed. Any ideas on how I can have the images change on the ImageButton while still using the OnTouchListener? Thank you very much!
问题是我希望 ImageButton 上的图像在您按下它时发生变化。OnTouchListener 似乎覆盖了触摸并且不允许图像更改。一旦我移除 OnTouchListener，ImageButton 就会在按下时切换到不同的图像。关于如何在仍然使用 OnTouchListener 的同时更改 ImageButton 上的图像的任何想法？非常感谢！
采纳答案by Peterdk
I think the solution is simple: remove the return truefrom the ontouchlistener. Since that blocks all further operations that respond to touch and input. Make it return falsetoo.
我认为解决方案很简单：return true从 ontouchlistener 中删除。因为这会阻止所有响应触摸和输入的进一步操作。也做吧return false。
This way it will allow other actions to also respond to the touch.
通过这种方式，其他动作也可以响应触摸。
回答by user632905
SoundButton1.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN ) {
mSoundManager.playSound(1);
btnmode.setImageResource(R.drawable.modeitempressed);
}
elseif (event.getAction() == MotionEvent.ACTION_UP ) {
btnmode.setImageResource(R.drawable.modeitemnormal);
}
return false;
}
});
