decorview that was originally added here or java.lang.IllegalArgumentException: View not attached to window manager

使用Dialog的时候,没少出现下面这两个报错

12-11 17:47:49.776: E/WindowManager(11461): android.view.WindowLeaked: Activity TestActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{42204800 V.E..... R.....I. 0,0-640,164} that was originally added here

 

12-11 17:47:50.666: E/AndroidRuntime(11461): java.lang.IllegalArgumentException: View=com.android.internal.policy.impl.PhoneWindow$DecorView{42204800 V.E..... R.....I. 0,0-640,164} not attached to window manager

其原因就是:Dialog生命周期比Activity的生命周期长

所以,出现这个bug的时候,请检查创建这个Dialog的context所属的Activity是不是已经结束了,而dialog还在显示。

下面的测试代码可以复现上面提到的bug

public class TestActivity extends Activity{
    private Dialog mDialog;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);
        mDialog = new Dialog(this);  
        mDialog.show();
        finish();//直接结束这个Activity,此时Dialog没有关闭,还在显示,生命周期比Activity长了,就会出现上面提到的Bug
}

解决方法:

1.请检查,是否还未等Dialog消失就提前结束Activity。如果是,肯定是你的逻辑出问题了,还没等Dialog结束就结束Activity。

2.不管什么情况,Activity一结束,确实要关闭Dialog。那么可在onStop或者onPause里面关闭dialog

@Override
protected void onStop() {
    super.onStop();
    if(mDialog.isShowing()){
        mDialog.dismiss();
    }
}

 

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