Android - 构建通知,TaskStackBuilder.addParentStack不能正常工作

Question

我正在尝试从Android docs说明的通知中启动活动,但是当我打开通知然后按后退按钮时,HomeActivity(父级)不会打开,而是应用程序关闭.我究竟做错了什么？

    Intent resultIntent = new Intent(context, MatchActivity.class);;
    resultIntent.setFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);

    // Adds the back stack for the Intent (but not the Intent itself)
    stackBuilder.addParentStack(MainActivity.class);

    stackBuilder.addNextIntent(resultIntent);

Answer 1

您需要为要启动的活动添加父堆栈,而不是其父项.

更换:

stackBuilder.addParentStack(MainActivity.class);

有:

stackBuilder.addParentStack( MatchActivity.class );

这假设您已在Manifest(API 16+)中定义了父级:

<activity android:name=".MatchActivity"
    android:parentActivityName=".MainActivity"
    ... />

如果您正在使用API​​ 16进行开发,那么您必须将父级定义为:

<activity android:name=".MatchActivity">
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value=".MainActivity" />
</activity>

Answer 2

如果没有一个解决方案正在运行,并且您确定已经仔细地遵循了所有内容......那么您需要卸载该应用并重新安装它.为我工作!

Answer 3

Intent resultIntent = new Intent(App.getContext(), TargetActivity.class);
Intent backIntent = new Intent(App.getContext(), ParentActivity.class);
backIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
final PendingIntent resultPendingIntent = PendingIntent.getActivities(
                                    App.getContext(), 0, 
               new Intent[]{backIntent, resultIntent}, PendingIntent.FLAG_ONE_SHOT);
mNotifyBuilder.setContentIntent(resultPendingIntent);

这解决了Notification Click上父堆栈的问题

Answer 4

使用TaskStackBuilder并没有解决我的问题,只适用于Honeycomb和更高版本.所以我采取以下解决方案(请不要将我钉在十字架上):

1. 调用MainActivity而不是MatchActivity传递MatchActivity作为参数(通过Intent).
2. 在MainActivity.onCreate,启动MatchActivityif参数是否可用.

新代码:

Intent resultIntent = new Intent(context, MainActivity.class) //
        .putExtra(MainActivity.ACTIVITY_EXTRA, MatchActivity.class.getName()) //
        .putExtra("Pass extras to MatchActivity", "if you want! :)");

PendingIntent pendingIntent = PendingIntent.getActivity(context, visitId, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);

Notification notification = new NotificationCompat.Builder(context) //
            .setContentIntent(pendingIntent) //
            .build();

上MainActivity:

public static final String ACTIVITY_EXTRA = "activity";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getIntent().getStringExtra(ACTIVITY_EXTRA) != null) {
        startActivity(new Intent(getIntent()).setClassName(this, getIntent().getStringExtra(ACTIVITY_EXTRA)));
    }
    ...
}