Question

我正在使用Android应用程序来显示网络错误。

NetErrorPage.java

package exp.app;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class NetErrorPage extends Activity implements OnClickListener {    

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.neterrorlayout);
        Button reload=(Button)findViewById(R.id.btnReload);
        reload.setOnClickListener(this);    
        showInfoMessageDialog("Please check your network connection","Network Alert"); 
    }

    public void onClick(View arg0)             
        {
            if(isNetworkAvailable())
            {                   
                Intent myIntent = new Intent((Activity)NetErrorPage.this, MainActivity.class);   
                myIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);              
                ((Activity)NetErrorPage.this).startActivity(myIntent);
                finish();
            }
            else
                showInfoMessageDialog("Please check your network connection","Network Alert");
    }

    public void showInfoMessageDialog(String message,String title)
       {
        AlertDialog alertDialog = new AlertDialog.Builder(NetErrorPage.this).create();
        alertDialog.setTitle("Network Alert");
        alertDialog.setMessage(message);
        alertDialog.setButton("OK",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog,int which) 
                    {   
                        dialog.cancel();
                    }
                });            
        alertDialog.show();
    }

 private boolean isNetworkAvailable()
    {
        NetworkInfo ActiveNetwork;
        @SuppressWarnings("unused")
        String IsNetworkConnected;
        @SuppressWarnings("unused")
        String ConnectionType;
        ConnectivityManager connectivitymanager;
        connectivitymanager=(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);        
        try
        {           
            ActiveNetwork=connectivitymanager.getActiveNetworkInfo();
            ConnectionType=ActiveNetwork.getTypeName(); 
            IsNetworkConnected=String.valueOf(ActiveNetwork.getState());
            return true;                        
        }
        catch(Exception error)
        {
                return false;
        }
    }    
}

但我收到的错误如下，

08-17 11:59:08.019: E/WindowManager(16460): Activity exp.app.NetErrorPage has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40534a18 that was originally added here
08-17 11:59:08.019: E/WindowManager(16460): android.view.WindowLeaked: Activity exp.app.NetErrorPage has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40534a18 that was originally added here
08-17 11:59:08.019: E/WindowManager(16460):     at android.view.ViewRoot.<init>(ViewRoot.java:263)
08-17 11:59:08.019: E/WindowManager(16460):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
08-17 11:59:08.019: E/WindowManager(16460):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
08-17 11:59:08.019: E/WindowManager(16460):     at android.view.Window$LocalWindowManager.addView(Window.java:424)
08-17 11:59:08.019: E/WindowManager(16460):     at android.app.Dialog.show(Dialog.java:241)
08-17 11:59:08.019: E/WindowManager(16460):     at sync.directtrac.NetError.showInfoMessageDialog(NetErrorPage.java:114)
08-17 11:59:08.019: E/WindowManager(16460):     at sync.directtrac.NetError.onCreate(NetErrorPage.java:26)
08-17 11:59:08.019: E/WindowManager(16460):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-17 11:59:08.019: E/WindowManager(16460):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
08-17 11:59:08.019: E/WindowManager(16460):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
08-17 11:59:08.019: E/WindowManager(16460):     at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-17 11:59:08.019: E/WindowManager(16460):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
08-17 11:59:08.019: E/WindowManager(16460):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-17 11:59:08.019: E/WindowManager(16460):     at android.os.Looper.loop(Looper.java:130)
08-17 11:59:08.019: E/WindowManager(16460):     at android.app.ActivityThread.main(ActivityThread.java:3687)
08-17 11:59:08.019: E/WindowManager(16460):     at java.lang.reflect.Method.invokeNative(Native Method)
08-17 11:59:08.019: E/WindowManager(16460):     at java.lang.reflect.Method.invoke(Method.java:507)
08-17 11:59:08.019: E/WindowManager(16460):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
08-17 11:59:08.019: E/WindowManager(16460):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
08-17 11:59:08.019: E/WindowManager(16460):     at dalvik.system.NativeStart.main(Native Method)

我已经搜索了更多...但我没有任何正确的想法来清除它。

我想要的是，在加载此页面时，应添加布局并显示对话框。

请帮我清除此错误

注意：我也试过这个

@Override
    protected void onResume() {
    super.onResume();
        runOnUiThread(new Runnable() {
            public void run() {
                showInfoMessageDialog("Please check your network connection","Network Alert");
            }
        });

    }

Answer 1

谢谢大家给我很多建议。最后我得到了解决方案。那就是我已经启动了两次NetErrorPage intent。有一次，我检查了网络连接可用性并在页面启动事件中启动了意图。第二次，如果页面有错误，那么我已经在OnReceivedError事件中启动了意图。因此，第一次对话框未关闭，之前调用第二个对话框。所以我得到了一个错误。

错误原因：我调用了showInfoMessageDialog方法关闭第一个之前两次。

现在我已经删除了第二个电话和已清除的错误： - ）。

Answer 2

将此dialog.cancel();更改为dialog.dismiss();

解决方案是在退出dismiss()之前调用您在 NetErrorPage.java:114 中创建的Dialog上的Activity，例如在onPause()。

视图引用了它们的父Context（取自构造函数参数）。如果您在不破坏Activity和其他动态创建的Dialog的情况下离开View，则他们仍然会将此引用保留为Activity（如果您使用Context创建new ProgressDialog(this) }}：like {{1}}），因此GC无法收集它，导致内存泄漏。

Answer 3

在我的情况下finish()在对话框显示后立即执行。

Answer 4

请尝试这种方式让我知道：

Context mContext;
@Override
public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.neterrorlayout);

   mContext=NetErrorPage.this;
   Button reload=(Button)findViewById(R.id.btnReload);
   reload.setOnClickListener(this);    
   showInfoMessageDialog("Please check your network connection","Network Alert"); 
}
public void showInfoMessageDialog(String message,String title)
{
   new AlertDialog.Builder(mContext)
   .setTitle("Network Alert");
   .setMessage(message);
   .setButton("OK",new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog,int which) 
       {   
          dialog.cancel();
       }
   })
   .show();
}

Answer 5

只有在初始化Activity的窗口状态后才需要启动对话框这只发生在onresume之后。

所以请致电

runOnUIthread(new Runnable(){

    showInfoMessageDialog("Please check your network connection","Network Alert");
});

在你的OnResume函数中

。不要在OnCreate中创建对话框修改

使用此

Handler h = new Handler(); h.postDelayed(new Runnable(){ showInfoMessageDialog("Please check your network connection","Network Alert"); },500);

在你的Onresume而不是showonuithread

Answer 6

 @Override
    protected void onPostExecute(final Boolean success) {
        mProgressDialog.dismiss();
        mProgressDialog = null;

设置值null对我有用

Answer 7

我收到了这个错误，但它解决了很有趣。首先，我在api级别17得到了这个错误。当我在没有进度对话框的情况下调用一个线程（AsyncTask或其他）时，我再次使用进度对话框调用另一个线程方法，我得到了崩溃，原因是关于进度对话框的使用。

就我而言，有两个结果;

我在第一个线程开始之前采用了show();进度对话框方法，然后在最后一个线程结束之前我采用了dismiss();进度对话框方法。

所以：

ProgresDialog progressDialog = new ...

//configure progressDialog 

progressDialog.show();

start firstThread {
...
}

...

start lastThread {
...
} 

//be sure to finish threads

progressDialog.dismiss();

这很奇怪但是这个错误至少对我来说有能力破坏自己:)

Answer 8

我解决此问题的方法是不在对话框中调用意图。 ****相应地使用适用于活动或片段的语法

@Override
public void onClick(DialogInterface dialog, int which) {
    checkvariable= true;
    getActivity().finish();
}

@Override
public void onStop() {
    super.onStop();
    if (checkvariable) {
        startActivity(intent); 
    }
}

android活动已泄露窗口com.android.internal.policy.impl.phonewindow $ decorview问题

8 个答案: