提问人：SHASHIDHAR MANCHUKONDA 提问时间：9/25/2023 更新时间：9/25/2023 访问量：17
如何检查后台是否允许 startActivity （Android）？
How to check if startActivity is Allowed in background (Android)?
问：
收到通知时，由于 android 中的后台限制，无法启动活动
如何检查我是否允许在没有 try catch 块的情况下通过代码调用 startActivity https://developer.android.com/guide/components/activities/background-starts
答：
-1赞
Hezy Ziv
9/25/2023
#1
使用 PackageManager
Intent intent = new Intent(this, YourTargetActivity.class);
// Check if there is at least one activity that can handle the intent packageManager = getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(intent, 0);
if (!activities.isEmpty()) {
// There's at least one activity that can handle this intent, so it's safe to start it
startActivity(intent);
} else {
// No activity can handle the intent, handle this case as needed (e.g., show an error message)
}
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