单击通知时启动 Activity答案

【问题标题】：Launch Activity when notification is clicked单击通知时启动 Activity
【发布时间】：2016-05-30 10:24:12
【问题描述】：

当我单击状态栏中的通知时，我想打开一个活动。我在 StackOverflow 上看到了这个答案，但这些答案都不适合我。这是我的代码：

    notificationBuilder = new NotificationCompat.Builder(this);
    notificationBuilder.setProgress(100, 0, false);
    notificationBuilder.setAutoCancel(true);
    notificationBuilder.setSmallIcon(R.drawable.ic_action_file_cloud_upload);
    notificationBuilder.setContentTitle(getString(R.string.notification_upload_title));

    //when this notification is clicked and the upload is running, open the upload fragment
    Intent notificationIntent = new Intent(this, MainActivity.class);
    notificationIntent.setAction(Intent.ACTION_MAIN);
    notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK);

    // set intent so it does not start a new activity
    PendingIntent intent = PendingIntent.getActivity(this, 1, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_ONE_SHOT);
    notificationBuilder.setContentIntent(intent);

    this.startForeground(NOTIFICATION_ID_UPLOADING_PROGRESS, notificationBuilder.build());

Manifest.xml

<activity
        android:name="com.android.app.MainActivity_"
        android:label="@string/app_short_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

【问题讨论】：

stackoverflow.com/a/13716784/776244
你为什么用this.startForeground而不是NotificationManager.notify？
点击通知会发生什么？
@Malith Lakshan，状态栏已关闭，没有任何反应。
检查提供给待处理意图的上下文是否正确，尝试使用 ClassName.this，如果它来自服务或活动

标签： android android-notifications

【解决方案1】：

我终于意识到我必须这样写：

Intent notificationIntent = new Intent(this, MainActivity_.class);

而不是

Intent notificationIntent = new Intent(this, MainActivity.class);

非常感谢您的所有回答！

【讨论】：

【解决方案2】：

我认为您不需要所有这些标志和配置来从 PendingIntent 打开一个活动。你当然不需要

notificationIntent.setAction(Intent.ACTION_MAIN);
notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
PendingIntent.FLAG_ONE_SHOT

删除它们并重试。

此外：MainActivity 的包名是否符合预期（com.android.app.MainActivity）？

【讨论】：

【解决方案3】：

试试下面的解决方案希望它对你有用

Intent intent = new Intent(this,YourActivity....class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent blogIntent = PendingIntent.getActivity(this, INT CONSTANTS, intent,
                PendingIntent.FLAG_ONE_SHOT);

来自通知

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
.
.
.
notificationBuilder.setContentIntent(blogIntent);


Notification notification = notificationBuilder.build();
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(Constants.NOTIFICATION_NEW_BLOG, notification);

【讨论】：

【解决方案4】：

您必须在清单中添加自定义接收器

       <receiver
            android:name=".IntentReceiver"
            android:exported="false">
            <intent-filter>

                <!-- add notification action here  -->

            </intent-filter>
        </receiver>

在 Intent 接收器类中重写接收方法

public class IntentReceiver extends BroadcastReceiver{
@Override
    public void onReceive(Context context, Intent intent) {
        //call your activity here
    }
}

【讨论】：

我已经尝试过了，但没有成功。这个 onReceived 方法没有被调用

【解决方案5】：

Use this code

/* Invoking the default notification service */
        NotificationCompat.Builder  mBuilder = new NotificationCompat.Builder(this);

        mBuilder.setContentTitle("Test");
        mBuilder.setContentText(text2);
        mBuilder.setSmallIcon(R.drawable.icon);

   /* Creates an explicit intent for an Activity in your app */
        Intent resultIntent = new Intent(this, NotificationListActivity.class);

        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        stackBuilder.addParentStack(NotificationListActivity.class);

   /* Adds the Intent that starts the Activity to the top of the stack */
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =stackBuilder.getPendingIntent(0,PendingIntent.FLAG_UPDATE_CURRENT);

        mBuilder.setContentIntent(resultPendingIntent);
        NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

   /* notificationID allows you to update the notification later on. */
        mNotificationManager.notify(9999, mBuilder.build());

【讨论】：