The code I was testing with is nearly empty: I created two empty activities in Eclipse and just modified the AndroidManifest.xml file to let one of them have "singleTask" launch mode and also added launcher intent filters.
I can attach the code if that helps. On Wed, Mar 31, 2010 at 5:35 PM, Dianne Hackborn <[email protected]> wrote: > android:taskAffinity lets you define different groups of tasks. > As far as I know singleTask works as intended and documented. I would need > to dig much more into your code and the states that are going on to say > there is a problem. > > On Wed, Mar 31, 2010 at 2:11 PM, Linton Ye <[email protected]> wrote: >> >> Thanks Dianne, >> >> What I would like to achieve is to launch SingleTaskActivity in a >> different task than the one StandardActivity started when user clicks >> the home shortcut of SingleTaskActivty. However, when >> SingleTaskActivity is launched by StandardActivity, it is OK to leave >> them in the same task. >> >> If "singleTask" is not recommended, what is the best approach? >> >> Also, do you acknowledge the inconsistency of the dev guide I found >> about "singleTask"? >> >> >> On Wed, Mar 31, 2010 at 12:19 AM, Dianne Hackborn <[email protected]> >> wrote: >> > I suggest you don't use singleTask. And very strongly suggest you don't >> > use >> > singleInstance. These are for very specialized cases, and at the very >> > least >> > if your app isn't being launched from other apps it makes little sense >> > to >> > use them and is likely to cause you trouble. >> > >> > On Tue, Mar 30, 2010 at 10:49 PM, focuser <[email protected]> wrote: >> >> >> >> Hi, >> >> >> >> I have an app with two activities, one of which the launchmode is set >> >> to "singleTask". From the Android dev guide, I got the impression >> >> that my SingleTaskActivity should start a new task (or reuse an old >> >> task) and always sit at the root of the stack when launched. However, >> >> it's inconsistent with the behavior of the app if I follow the steps >> >> below: >> >> - launch StandardActivity from home >> >> - click the "home" key >> >> - launch SingleTaskActivity from home, you will see it's in the >> >> foreground as expected >> >> - click the "Back" key, StandardActivity comes to the foreground >> >> whereas I expect to see the home screen because SingleTaskActivity is >> >> supposed to be at the ROOT of the stack. It appears >> >> SingleTaskActivity was launched into the task that StandardActivity >> >> started, rather than starting its own task. >> >> >> >> Is my understanding about the "singleTask" launch mode correct? >> >> Thanks, >> >> >> >> - >> >> >> >> PS: >> >> >> >> === The Android Dev guide (http://developer.android.com/guide/topics/ >> >> manifest/activity-element.html#lmode) says: >> >> >> >> In contrast, "singleTask" and "singleInstance" activities can only >> >> begin a task. They are always at the root of the activity stack. >> >> Moreover, the device can hold only one instance of the activity at a >> >> time — only one such task. >> >> >> >> === My AndroidManifest.xml file: >> >> <application android:icon="@drawable/icon" android:label="@string/ >> >> app_name"> >> >> <activity android:name=".StandardActivity" >> >> android:label="Standard"> >> >> <intent-filter> >> >> <action android:name="android.intent.action.MAIN" /> >> >> <category >> >> android:name="android.intent.category.LAUNCHER" /> >> >> </intent-filter> >> >> </activity> >> >> <activity android:name=".SingleTaskActivity" >> >> android:label="ActivitySingleTask" >> >> android:launchMode="singleTask" >> >> > >> >> <intent-filter> >> >> <action android:name="android.intent.action.MAIN" /> >> >> <category >> >> android:name="android.intent.category.LAUNCHER" /> >> >> </intent-filter> >> >> </activity> >> >> </application> >> >> >> >> -- >> >> You received this message because you are subscribed to the Google >> >> Groups "Android Developers" group. >> >> To post to this group, send email to >> >> [email protected] >> >> To unsubscribe from this group, send email to >> >> [email protected] >> >> For more options, visit this group at >> >> http://groups.google.com/group/android-developers?hl=en >> >> >> >> To unsubscribe, reply using "remove me" as the subject. >> > >> > >> > >> > -- >> > Dianne Hackborn >> > Android framework engineer >> > [email protected] >> > >> > Note: please don't send private questions to me, as I don't have time to >> > provide private support, and so won't reply to such e-mails. All such >> > questions should be posted on public forums, where I and others can see >> > and >> > answer them. >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Android Developers" group. >> > To post to this group, send email to [email protected] >> > To unsubscribe from this group, send email to >> > [email protected] >> > For more options, visit this group at >> > http://groups.google.com/group/android-developers?hl=en >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en > > > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
