Activity使用Dialog样式导致点击空白处自动关闭的问题

将Activity设置成窗口的样式实现Dialog或者Popupwindow效果在开发中是很常用的一种方式，在AndroidMenifest.xml中将需要设置的Activity增加android:theme="@android:style/Theme.Dialog"属性即可。但是窗口化的Activity有个问题就是:点击窗口空白处Activity会finish。如何避免这个问题呢，办法如下：

<resources>
<style name="Theme.SoundRecorder" parent="@android:style/Theme.Holo.DialogWhenLarge">
<item name="android:windowCloseOnTouchOutside">false</item>
</style>
</resources>

YourActivity.this.setFinishOnTouchOutside(false);

@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN && isOutOfBounds(this, event)) {
return true;
}
return super.onTouchEvent(event);
}

private boolean isOutOfBounds(Activity context, MotionEvent event) {
final int x = (int) event.getX();
final int y = (int) event.getY();
final int slop = ViewConfiguration.get(context).getScaledWindowTouchSlop();
final View decorView = context.getWindow().getDecorView();
return (x < -slop) || (y < -slop)|| (x > (decorView.getWidth() + slop))|| (y > (decorView.getHeight() + slop));
}