Android onKeyDown()不';I don’我不上扩展班
我创建了一个自定义GalleryView,它可以与我的设备(三星Galaxy S III和Nexus 4)一起使用,但是当我尝试在模拟器中使用它时,我遇到了以下错误Android onKeyDown()不';I don’我不上扩展班,android,Android,我创建了一个自定义GalleryView,它可以与我的设备(三星Galaxy S III和Nexus 4)一起使用,但是当我尝试在模拟器中使用它时,我遇到了以下错误 02-24 01:01:03.593: E/AndroidRuntime(3429): FATAL EXCEPTION: Thread-11 02-24 01:01:03.593: E/AndroidRuntime(3429): android.view.ViewRoot$CalledFromWrongThreadException
02-24 01:01:03.593: E/AndroidRuntime(3429): FATAL EXCEPTION: Thread-11
02-24 01:01:03.593: E/AndroidRuntime(3429): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
02-24 01:01:03.593: E/AndroidRuntime(3429): at android.view.ViewRoot.checkThread(ViewRoot.java:2802)
02-24 01:01:03.593: E/AndroidRuntime(3429): at android.view.ViewRoot.playSoundEffect(ViewRoot.java:2581)
02-24 01:01:03.593: E/AndroidRuntime(3429): at android.view.View.playSoundEffect(View.java:8516)
02-24 01:01:03.593: E/AndroidRuntime(3429): at android.widget.Gallery.onKeyDown(Gallery.java:1109)
02-24 01:01:03.593: E/AndroidRuntime(3429): at com.example.coverflow.ui.galleryView$1.run(galleryView.java:55)
02-24 01:01:03.593: E/AndroidRuntime(3429): at java.lang.Thread.run(Thread.java:1096)
这些错误涉及以下代码行:
public void startSlideShow(final int periodTime)
{
final Runnable __runnable = new Runnable()
{
@Override
public void run()
{
if (!isTouched)
galleryView.this.onKeyDown(KeyEvent.KEYCODE_DPAD_RIGHT, null);
mHandler.postDelayed(this, periodTime);
}
};
new Thread(__runnable).start();
this.setOnTouchListener(new View.OnTouchListener()
{
@Override
public boolean onTouch(View view, MotionEvent event)
{
int currentEvent = event.getAction();
if (currentEvent == MotionEvent.ACTION_DOWN
|| currentEvent == MotionEvent.ACTION_MOVE)
isTouched = true;
else
{
isTouched = false;
// Reset handler
mHandler.removeCallbacks(__runnable);
mHandler.postDelayed(__runnable, periodTime);
}
return false;
}
});
}
第55行是galleryView.this.onKeyDown(KeyEvent.KEYCODE\u DPAD\u RIGHT,null)代码>
如何避免此问题?您正在尝试从活动UI线程以外的其他线程更新UI
正如错误所说:
Only the original thread that created a view hierarchy can touch its views.
尝试使用runOnUIThread(新的可运行{…}())包装文件访问代码。
示例:那么为什么它在我的手机上工作而在emulator中不工作呢!?这两次运行都应该抛出此异常,您可能在两次运行之间更改了某些内容。