通知中的ProgressBar [ANDROID]

我知道有很多关于它的话题。我知道有Android开发者网站，即使我使用这个网站的代码，我有一个错误。通知中的ProgressBar [ANDROID]

我只是想在通知中放置一个ProgressBar。所以我把这种方法，我从Android开发者网站了：

public static void generateNotification(Context context){ 

    final NotificationManager mNotifyManager =(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 
    final Notification.Builder mBuilder = new Notification.Builder(context); 
    mBuilder.setContentTitle("Picture Download") 
      .setContentText("Download in progress"); 
    // Start a lengthy operation in a background thread 
    new Thread(
     new Runnable() { 
      @Override 
      public void run() { 
       int incr; 

       for (incr = 0; incr <= 100; incr+=5) { 

         mBuilder.setProgress(100, incr, false);       
         mNotifyManager.notify(0, mBuilder.build()); 

          try { 

           Thread.sleep(5*1000); 
          } catch (InterruptedException e) { 
           Log.d("Generate Notif", "sleep failure"); 
          } 
       } 
       // When the loop is finished, updates the notification 
       mBuilder.setContentText("Download complete") 
       .setProgress(0,0,false); 
       mNotifyManager.notify(100, mBuilder.build()); 
      } 
     } 
    // Starts the thread by calling the run() method in its Runnable 
    ).start(); 
}

，我有此错误：

10-01 15:37:42.226: E/AndroidRuntime(9840): FATAL EXCEPTION: Thread-1250 
10-01 15:37:42.226: E/AndroidRuntime(9840): java.lang.NoSuchMethodError: android.app.Notification$Builder.build 
10-01 15:37:42.226: E/AndroidRuntime(9840): at com.Tools.UtilClass$10.run(UtilClass.java:813) 
10-01 15:37:42.226: E/AndroidRuntime(9840): at java.lang.Thread.run(Thread.java:856)

这：

E/WindowManager(9840): Activity com.main.LoginConnection has leaked window [email protected] that was originally added here 
E/WindowManager(9840): android.view.WindowLeaked: Activity com.main.LoginConnection has leaked window [email protected] that was originally added here 
E/WindowManager(9840): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:344) 
E/WindowManager(9840): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:267) 
E/WindowManager(9840): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215) 
E/WindowManager(9840): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140) 
E/WindowManager(9840): at android.view.Window$LocalWindowManager.addView(Window.java:537) 
E/WindowManager(9840): at android.app.Dialog.show(Dialog.java:278) 
E/WindowManager(9840): at com.main.LoginConnection.getRegisterId(LoginConnection.java:281) 
E/WindowManager(9840): at com.main.LoginConnection.onCreate(LoginConnection.java:101) 
E/WindowManager(9840): at android.app.Activity.performCreate(Activity.java:4465) 
E/WindowManager(9840): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 
E/WindowManager(9840): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 
E/WindowManager(9840): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 
E/WindowManager(9840): at android.app.ActivityThread.access$600(ActivityThread.java:123) 
E/WindowManager(9840): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 
E/WindowManager(9840): at android.os.Handler.dispatchMessage(Handler.java:99) 
E/WindowManager(9840): at android.os.Looper.loop(Looper.java:137) 
E/WindowManager(9840): at android.app.ActivityThread.main(ActivityThread.java:4424) 
E/WindowManager(9840): at java.lang.reflect.Method.invokeNative(Native Method) 
E/WindowManager(9840): at java.lang.reflect.Method.invoke(Method.java:511) 
E/WindowManager(9840): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
E/WindowManager(9840): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
E/WindowManager(9840): at dalvik.system.NativeStart.main(Native Method) 
E/WindowManager(9840): Activity com.main.LoginConnection has leaked window [email protected] that was originally added here 
E/WindowManager(9840): android.view.WindowLeaked: Activity com.main.LoginConnection has leaked window [email protected] that was originally added here 
E/WindowManager(9840): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:344) 
E/WindowManager(9840): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:267) 
E/WindowManager(9840): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215) 
E/WindowManager(9840): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140) 
E/WindowManager(9840): at android.view.Window$LocalWindowManager.addView(Window.java:537) 
E/WindowManager(9840): at android.app.Dialog.show(Dialog.java:278) 
E/WindowManager(9840): at com.Tools.UtilClass.openSettingApp(UtilClass.java:557) 
E/WindowManager(9840): at com.Tools.UtilClass$4.onClick(UtilClass.java:383) 
E/WindowManager(9840): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:166) 
E/WindowManager(9840): at android.os.Handler.dispatchMessage(Handler.java:99) 
E/WindowManager(9840): at android.os.Looper.loop(Looper.java:137) 
E/WindowManager(9840): at android.app.ActivityThread.main(ActivityThread.java:4424) 
E/WindowManager(9840): at java.lang.reflect.Method.invokeNative(Native Method) 
E/WindowManager(9840): at java.lang.reflect.Method.invoke(Method.java:511) 
E/WindowManager(9840): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
E/WindowManager(9840): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
E/WindowManager(9840): at dalvik.system.NativeStart.main(Native Method)

，所以我不明白为什么我有这个错误...

来源

2014-10-01 Thomas Trabelsi

首先，我会建议使用NotificationCompat.Builder，而不仅仅是Notification.Builder--这可能是您遇到的第一个问题（您是否忽略了警告？）。您将需要应用程序compat v7和支持v4库。

其次，你不会看到通知。通知需要以下实际岗位：

内容标题
内容文本
内容意图
小图标

要查看通知，添加内容意图setContentIntent(PendingIntent.getActivity(context, 0, new Intent(), PendingIntent.FLAG_ONE_SHOT))和小图标setSmallIcon(android.R.drawable.ic_notification_clear_all - 然后你就可以发布它了。

通过进行这些修改，您的代码适用于我。您还有其他一些问题，特别是当您完成后不会删除您的下载通知，但这与将您的notify(100呼叫更改为notify(0一样简单，您传递的号码是通知ID，因此它们需要匹配if它应该取代进展之一。

我还没有解决你的内存泄漏，这是一个不挂在你的线程内的活动上下文的问题。

来源

2014-10-01 15:38:00 Travis

我宠爱NOtificationCompat.Builder，但如果我把这个代码，我有setProgress方法的错误'这个方法是未定义的......'所以我怎么做，而我把这段代码放在ANdroid开发者网站上 – 2014-10-02 08:24:40

我发现问题。这是因为我有android-support-v13和显然我应该使用android-support-V4。 BUt此时没有任何反应。 – 2014-10-02 09:06:17

正如我所说的，您需要使用NotificationCompat.Builder，并且您需要提到的4件事情才能发布通知。如果你没有全部4个，它不会发布。 – Travis 2014-10-02 13:38:14

通知中的ProgressBar [ANDROID]

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