After press back from splash screen app goes to previous open activity android

Issue

In my application when user open app by click "app icon" then screen open by this flow

SplashActivity -> WelcomeActivity -> SignInActivity

when user open app by click "some link" then screen flow is

Splashactivity -> VideoActivity

when I open app by click "some link" then screen flow is same as above

Splashactivity -> VideoActivity

but when i press back in splash activity in this condition app goes to "SignInActivity" instead of close the app

manifest for Splash, Welcome, video activity

//splash
 <activity
            android:name=".splash.SplashActivity"
            android:launchMode="singleTask"
            android:screenOrientation="portrait">
            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <intent-filter>
                <data
                    android:host="tinyurl.com"
                    android:scheme="https" />

                <action android:name="android.intent.action.VIEW" />

                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
            </intent-filter>
</activity>

//video
<activity
            android:name=".videocall.ui.VideoActivity"
            android:screenOrientation="portrait" />


//welcome
<activity
            android:name=".videocall.ui.WelcomeActivity"
            android:screenOrientation="portrait" />


//SignIn
<activity
            android:name=".videocall.ui.SignInActivity"
            android:screenOrientation="portrait" />

I open Welcome activity from splash screen by this

 val intent = Intent(this@SplashActivity, WelcomeActivity::class.java)
                    intent.flags = intent.flags or Intent.FLAG_ACTIVITY_NO_HISTORY
                    startActivity(intent)
                    finish()

So If I first open app by icon and goes to sign in activity and then put app in background and open app by click some link then If i press back button while I'm in splash screen then app need to be close not open sign in activity

So please tell me what to do in this situation

Solution

This is your activity stack:

Spash -> Welcome -> Sign-in

After open by link

Sign-in -> Splash -> Video

Because your app in background and the last activity is Sign-in.

How about if we use finish() in onBackPress of SplashAcitivity?

Answered By - dinhlam