Android: How to Clear Intent Stack While Using SingleTask
android
Solution
I'm sure there should be more efficient ways to solve this issue but, I suggest something different.
Just call `finish()` method after you started an activity, so activity A would finish and when user pressed back button in activity B application returns home screen as you hope.
Also check twice your dialogs to avoid any exceptions, i.e check this question (and answers too) to understand what I meant.
Problem
I'm using Twitter `oAuth` library in my application. Users are logging in with ther Twitter accounts. In activity A, twitter login is available. When user logged in, I want to start activity B with no history. Here is my all stuff: Firstly, `Manifest.xml`, so I set `launchMode=singleTask` as Twitter api requested: ``` <activity android:name=".A_Activity" android:label="@string/app_name" android:launchMode="singleTask" android:theme="@android:style/Theme.Black.NoTitleBar"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> <intent-filter> <action android:name="android.intent.action.VIEW" /> <category android:name="android.intent.category.DEFAULT" /> <category android:name="android.intent.category.BROWSABLE" /> <data android:scheme="my_twitter_scheme" /> </intent-filter> </activity> ``` Here is how I'm starting activity B: ``` Intent i = new Intent(A.this, B.class); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(i); ``` Note: I'm calling activity B over BroadcastReceiver instance. When I logged in, my receivers starting activity B properly, but unfortunately when I pressed the back button, application turning back to activity A. I suppose it's about `launchMode` and as I said, Twitter needs that option. What am I doing wrong? Any help or suggestion (maybe about Twitter) would be great.