单击通知后活动未启动答案

【问题标题】：Activity is not launching after clicking on Notification单击通知后活动未启动
【发布时间】：2014-03-11 11:02:20
【问题描述】：

我正在BrodCastReceiver 上做一个程序。因此，在我的程序中，当收到任何事件时，它会显示通知，但在单击相同的通知后，它不会启动指定的活动。

这是我的代码

public void onReceive(Context context, Intent i) {
    // TODO Auto-generated method stub
    Intent intent=new Intent(context, MainActivity.class);

    Toast.makeText(context, "Priority 2", Toast.LENGTH_SHORT).show();

    mBuilder=new NotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle("My notification")
                .setContentText("Hello World!")
                .build();

     NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

     mNotificationManager.notify(1, mBuilder);
     PendingIntent.getBroadcast(context, 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);

     mNotificationManager.notify(1, mBuilder);
}

【问题讨论】：

您是否将待处理的 Intent 设置为 builder？

标签： android android-intent notifications

【解决方案1】：

public void onReceive(Context context, Intent i) {
// TODO Auto-generated method stub
Intent intent=new Intent(context, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, intent.FLAG_ACTIVITY_NEW_TASK);
Toast.makeText(context, "Priority 2", Toast.LENGTH_SHORT).show();

mBuilder=new NotificationCompat.Builder(context)
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("My notification")
            .setContentText("Hello World!").setContentIntent(pendingIntent);
            .build();

 NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

 mNotificationManager.notify(1, mBuilder);
 PendingIntent.getBroadcast(context, 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);

 mNotificationManager.notify(1, mBuilder);
}

setContentIntent(pendingIntent);您需要在创建 NotificationManager 时进行设置。

【讨论】：

上述代码中缺少PendingIntent PendingIntent pendingIntent= PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

【解决方案2】：

您应该添加一个待处理的意图，该意图将响应点击事件以打开相应的活动

试试这个：

public void onReceive(Context context, Intent i) {
    // TODO Auto-generated method stub
    Intent intent=new Intent(context, MainActivity.class);
           intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    PendingIntent   pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

    Toast.makeText(context, "Priority 2", Toast.LENGTH_SHORT).show();

    mBuilder=new NotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle("My notification")
                .setContentIntent(pendingIntent)
                .setContentText("Hello World!")
                .build();

     NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

     mNotificationManager.notify(1, mBuilder);



}

希望对你有帮助

【讨论】：

【解决方案3】：

Intent intent=new Intent(context, MainActivity.class);
pendingIntent = PendingIntent.getBroadcast(context, 0, intent, intent.FLAG_ACTIVITY_NEW_TASK);
mBuilder=new NotificationCompat.Builder(context)
        .setSmallIcon(R.drawable.ic_launcher)
        .setContentTitle("My notification")
        .setContentText("Hello World!").setContentIntent(pendingIntent);
        .build();
 NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 
 mNotificationManager.notify(1, mBuilder)

首先初始化 pendingIntent 并在构建期间设置它。

【讨论】：