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POBug: onNewIntent not called for singleTop activity with Intent.FLAG_ACTIVITY_NEW_TASK
primarykey
Id
4020909
data
AcceptedAnswerId
0
AnswerCount
1
ClosedDate
2013-05-14T17:55:27.850
CommentCount
0
CommunityOwnedDate
CreationDate
2010-10-26T05:20:51.233
FavoriteCount
7
LastActivityDate
2012-12-28T05:30:10.697
LastEditDate
LastEditorUserId
0
OwnerUserId
481207
ParentId
0
PostTypeId
1
Score
17
ViewCount
14596
LastEditorDisplayName
text
Body
There appears to be a bug in <code>startActivity</code>. By setting activities to be <code>singleTop</code> with different <code>taskAffinity</code> in AndroidManifest.xml and using the <code>Intent.FLAG_ACTIVITY_NEW_TASK</code> when calling <code>startActivity</code>, two activities can be created in two tasks (one activity per task). Calling <code>startActivity</code> again will return to the first activity/task and <code>onNewIntent</code> is called. However, calling <code>startActivity</code> a forth time will return to the second activity/task, but <code>onNewIntent</code> is not called. The only difference between the two tasks is their <code>taskAffinity</code>. Somehow, asymmetrical behaviour is observed. However, if the <code>Intent.FLAG_ACTIVITY_SINGLE_TOP</code> is also used, then <code>onNewIntent</code> is called as expected. It would appear that <code>singleTop</code> in AndroidManifest.xml is not the same as <code>Intent.FLAG_ACTIVITY_SINGLE_TOP</code> in the <code>Intent</code>. <pre> public class ActivityA extends Activity implements OnClickListener { private String tag; @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); tag = getClass().getName(); Log.v(tag, "onCreate()"); setContentView(R.layout.main); Button button = (Button)findViewById(R.id.button); button.setText(tag.endsWith("ActivityA") ? "Activity B" : "Activity A"); button.setOnClickListener(this); } @Override public void onClick(View v) { Intent intent; int flags = Intent.FLAG_ACTIVITY_NEW_TASK // | Intent.FLAG_ACTIVITY_SINGLE_TOP ; Log.v(tag, "onClick()"); intent = new Intent(this, tag.endsWith("ActivityA") ? ActivityB.class : ActivityA.class); intent.setFlags(flags); startActivity(intent); } @Override protected void onNewIntent(Intent intent) { Log.v(tag, "onNewIntent()"); } } </pre> <pre> public class ActivityB extends ActivityA { } </pre> <pre> <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.test" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".ActivityA" android:launchMode="singleTop" android:label="Activity A"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".ActivityB" android:launchMode="singleTop" android:label="Activity B" android:taskAffinity="activity.B"> </activity> </application> </manifest> </pre>
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Bug: onNewIntent not called for singleTop activity with Intent.FLAG_ACTIVITY_NEW_TASK
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