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：

一、如果API Level>=11有两种方式：

1、

res\values\styles.xml 

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


2,


YourActivity.this.setFinishOnTouchOutside(false);


 

二、如果API Level<11

 


@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));
    }