单击时更改按钮
问题描述:
单击时onTouchLitsener按钮不会更改。点击时我想让按钮改变。单击时更改按钮
public class SoundActivity extends Activity implements OnTouchListener {
/** Called when the activity is first created. */
MediaPlayer mp;
MediaPlayer mp1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
final Button zero = (Button) this.findViewById(R.id.button1);
zero.setOnTouchListener(this);
mp = MediaPlayer.create(this, R.raw.song_3);
//final ImageButton zero = (ImageButton) this.findViewById(R.id.imageButton1);
//zero.setOnTouchListener(this);
//mp = MediaPlayer.create(this, R.raw.song_3);
}
@Override
public boolean onTouch(View v, MotionEvent event)
{
switch (event.getAction())
{
case MotionEvent.ACTION_DOWN:
{
mp.setLooping(true);
mp.start();
}
break;
case MotionEvent.ACTION_UP:
{
mp.pause();
}
break;
}
return true;
}
//public boolean onTouchEvent(View v, MotionEvent event) {
//ImageView iv = (ImageView) v;
// if (event.getAction() == MotionEvent.ACTION_DOWN) {
// iv.setImageResource(R.drawable.arrow_leftpressed);
// return true;
//} else if (event.getAction() == MotionEvent.ACTION_UP) {
// iv.setImageResource(R.drawable.arrow_left);
//return true;
//}
//return false;
//}
public boolean onTouchEvent(View v, MotionEvent event) {
Button zero = (Button) v;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
zero.setBackgroundResource(R.drawable.arrow_leftpressed);
return true;
} else if (event.getAction() == MotionEvent.ACTION_UP) {
zero.setBackgroundResource(R.drawable.arrow_left);
return true;
}
return false;
}
}
我的XML文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="button"
android:clickable="true"
/>
<ImageButton
android:id="@+id/imageButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/button4"
android:clickable="true"
/>
</LinearLayout>
答
你写错了代码块的按钮代码。
你写zero.setOnTouchListener(this);
所以每当你会触动按钮onTouch将调用不onTouchEvent
所以在onTouch添加按钮的代码。
在代码中进行以下更改。
删除整个块
public boolean onTouchEvent(View v, MotionEvent event) {
Button zero = (Button) v;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
zero.setBackgroundResource(R.drawable.arrow_leftpressed);
return true;
} else if (event.getAction() == MotionEvent.ACTION_UP) {
zero.setBackgroundResource(R.drawable.arrow_left);
return true;
}
return false;
}
移动上述onTouch block.Below代码是应该的。
@Override
public boolean onTouch(View v, MotionEvent event) {
Button zero = (Button) v;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
zero.setBackgroundResource(R.drawable.arrow_leftpressed);
return true;
} else if (event.getAction() == MotionEvent.ACTION_UP) {
zero.setBackgroundResource(R.drawable.arrow_left);
return true;
}
return false;
}
答
我建议你使用一个onClickListener。
当按下按钮时,onTouchListener正在接收两个事件 - 触摸它时触发ACTION_DOWN,释放时触发ACTION_UP。所以玩家在此之后开始并停止。
即将尝试它,但我有一个问题,我仍然保持其他代码在onTouch一样?如果你正在谈论mp.setLooping(true),也感谢你的支持者 – elcuban
; mp.start(); 然后是它不是一个问题 –