[android-developers] When to show a dialog from Fragment and when not to
I have a Fragment that fires an async task to connect to a remote server. If it fails to connect (eg times out) then I use use a Handler to display a dialog to the user. final DialogFragment newFragment = > AlertDialogFragment.createConnectionFailedDialog(getSupportActivity()); > newFragment.show(getFragmentManager()); All good except that the async task if the user navigates away from the Activity hosting that Fragment (eg goes to Preferences) then when the time out occurs the Fragment is in a quasi shut down state and the following exception is thrown. 04-14 23:11:51.407: ERROR/AndroidRuntime(6267): FATAL EXCEPTION: main > java.lang.IllegalStateException: Can not perform this action after > onSaveInstanceState > at > android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1327) > at > android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1338) > at > android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595) > at > android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:574) > at > org.holoeverywhere.app.DialogFragment.show(DialogFragment.java:369) > at > org.holoeverywhere.app.DialogFragment.show(DialogFragment.java:350) > at > org.holoeverywhere.app.DialogFragment.show(DialogFragment.java:329) > at > au.com.xandar.wirelesstiming.connection.ConnectionFragment.updateUserInterfaceOnClose(ConnectionFragment.java:197) > at > au.com.xandar.wirelesstiming.connection.ConnectionFragment.access$200(ConnectionFragment.java:26) > at > au.com.xandar.wirelesstiming.connection.ConnectionFragment$2.run(ConnectionFragment.java:96) > at android.os.Handler.handleCallback(Handler.java:725) > at android.os.Handler.dispatchMessage(Handler.java:92) > at android.os.Looper.loop(Looper.java:137) > at android.app.ActivityThread.main(ActivityThread.java:5041) > at java.lang.reflect.Method.invokeNative(Native Method) > at java.lang.reflect.Method.invoke(Method.java:511) > at > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) > at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) > at dalvik.system.NativeStart.main(Native Method) What is the correct way to handle this scenario? Ideally I'd like to always display the dialog, but if that is not an option, then what do I use to determine whether the dialog should be displayed or not? William -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] When to show a dialog from Fragment and when not to
Hi, You could try using Fragment.isVisible() to determine whether the fragment is visible and can trigger a dialog. For situations where fragment is in the background you could use a Toast perhaps? -- H On Apr 14, 2013, at 4:25 PM, William Ferguson wrote: > I have a Fragment that fires an async task to connect to a remote server. If > it fails to connect (eg times out) then I use use a Handler to display a > dialog to the user. > > final DialogFragment newFragment = > AlertDialogFragment.createConnectionFailedDialog(getSupportActivity()); > newFragment.show(getFragmentManager()); -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] When to show a dialog from Fragment and when not to
Fragment#isVisible is returning true even if the user has navigated to another Activity. However #isResumed returns false, so maybe that is the right target. On Sunday, April 14, 2013 11:42:06 PM UTC+10, Harri Smått wrote: > > Hi, > > You could try using Fragment.isVisible() to determine whether the fragment > is visible and can trigger a dialog. For situations where fragment is in > the background you could use a Toast perhaps? > > -- > H > > On Apr 14, 2013, at 4:25 PM, William Ferguson > > > wrote: > > > I have a Fragment that fires an async task to connect to a remote > server. If it fails to connect (eg times out) then I use use a Handler to > display a dialog to the user. > > > > final DialogFragment newFragment = > AlertDialogFragment.createConnectionFailedDialog(getSupportActivity()); > > newFragment.show(getFragmentManager()); > > -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com 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 unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
