has leaked window com.android.internal.policy.impl.PhoneWindow解决(Dialog.cancel、dismiss、hide区别)

项目中有个Activity中用到了ProgressDialog，而在跳转到下个Activity时就会报这个错：
has leaked window com.android.internal.policy.impl.PhoneWindow$ that was originally added here
之前还没注意这个错误，看字面意思是泄露了窗口，什么意思呢？

原来，在初始化时有：
mProgressDialog = new ProgressDialog(this);
而由ProgressDialog的构造函数可以看到，传入的是一个Context，dialog可以看做引用了当前Context
public ProgressDialog(Context context) {
super(context);
initFormats();
}

这样就可以理解为什么跳转时会提示这个错误了，我在finish当前Activity时没有将dialog置为null，导致那个Activity一直被引用，GC不能及时回收，这就是泄露。

知道原因后就好做了，在onDestroy中调用:
if(mProgressDialog != null && mProgressDialog.isShowing()){
//mProgressDialog.hide();
mProgressDialog.dismiss();
mProgressDialog = null;

}

看来，让dialog消失有好几种方法: hide、cancel、dismiss，有什么区别呢？
dismiss方法会释放对话框所占的资源，而hide方法不会。activity退出前必须调用dismiss方法关闭对话框。所以，最正确的调用方法是，在activity的onDestory方法里调用dismiss方法，其他地方都用hide方法隐藏对话框。

(来自:http://blog.csdn.net/leeo1010/article/details/36420927)

而cancel其实是在调用dismiss之前执行注册OnCancelListener的事件，如果注册了的话。
现在问题清楚了，就是如果你在创建AlertDialog的时候调用了setOnCancelListener 这个mCancelMessage变量有作用，否则dismiss和cancel等同。
(来自：http://luren85.iteye.com/blog/975131)

has leaked window com.android.internal.policy.impl.PhoneWindow解决(Dialog.cancel、dismiss、hide区别)相关推荐

异常：Activity has leaked window com.android.internal.policy.impl.PhoneWindow
其意思大概就是:窗体已经关闭了但是dialog仍然在显示,Activity has leaked window(activity渗透出窗体),大概就是这个意思. 那么就要在activity finis ...
android.view.WindowLeaked: Activity has leaked window com.android.internal.p
android.view.WindowLeaked: Activity has leaked window com.android.internal.policy.impl.PhoneWindow$ ...
activity关闭和dialog.dismiss冲突的解决(Activity has leaked window com.android.internal.p
其意思大概就是:窗体已经关闭了但是dialog仍然在显示,Activity has leaked window(activity渗透出窗体),大概就是这个意思. 那么就要在activity finis ...
android.view.WindowLeaked: Activity com.xty.activity.ActivityMainPage has leaked window com.android.
android.view.WindowLeaked: Activity com.xty.activity.ActivityMainPage has leaked window com.android. ...
E/WindowManager: android.view.WindowLeaked: Activity com.xxx.xxx.xxx has leaked window com.android.i
今天运行代码,程序没有崩溃,并遇到以下错误提示: E/WindowManager: android.view.WindowLeaked:Activity com.xxx.xxx.xxx has lea ...
Android问题集锦之二十 Activity has leaked window that was originall
分享一下我老师大神的人工智能教程!零基础,通俗易懂!http://blog.csdn.net/jiangjunshow 也欢迎大家转载本篇文章.分享知识,造福人民,实现我们中华民族伟大复兴! 今天调试 ...
android.view.WindowLeaked: Activity com.xty.activity.ActivityMainPage has leaked window
android.view.WindowLeaked: Activity com.xty.activity.ActivityMainPage has leaked window com.android. ...
Activity has leaked window that was originally added
错误: E/WindowManager: android.view.WindowLeaked: Activity com.x.x.x has leaked window com.android.int ...
【已解决】Activity MainActivity has leaked window PhoneWindow$DecorView@ that was originally added here
今天写Sqlite Demo时,发生如下错误: Activity me.dengfengdecao.android.savedatademo.MainActivity has leaked windo ...

has leaked window com.android.internal.policy.impl.PhoneWindow解决(Dialog.cancel、dismiss、hide区别)

has leaked window com.android.internal.policy.impl.PhoneWindow解决(Dialog.cancel、dismiss、hide区别)相关推荐

最新文章

热门文章