CODEWITHSUNDEEP
androidback-stack
Archie.bpgc
Archie.bpgc

Reputation: 24012

Android: Remove all the previous activities from the back stack

When i am clicking on Logout button in my Profile Activity i want to take user to Login page, where he needs to use new credentials.

Hence i used this code:

Intent intent = new Intent(ProfileActivity.this,
        LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

in the onButtonClick of the Logout button.

But the problem is when i click device back button on the Login Activity it takes me to the ProfileActivity. I was expecting the application should close when i press device back button on LoginActivity.

What am i doing wrong?

I also added android:launchMode="singleTop" in the manifest for my LoginActivity

Thank You

Upvotes: 163

Views: 195838

Answers (18)

Ranajit Sawant
Ranajit Sawant

Reputation: 201

You can use below method

    fun signOut(context: Context) {
        try {
                val intent = Intent(context, SplashActivity::class.java)
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK)
                context.startActivity(intent)
                (context as Activity).finishAffinity()
            }
        } catch (e: Exception) {
            LogUtils.logE("EXCEPTION", e)
        }

    }

Upvotes: 3

kgiannakakis
kgiannakakis

Reputation: 104168

The solution proposed here worked for me:

Java

Intent i = new Intent(OldActivity.this, NewActivity.class);
// set the new task and clear flags
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(i);

Kotlin

val i = Intent(this, NewActivity::class.java)
// set the new task and clear flags
i.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
startActivity(i)

However, it requires API level >= 11.

Upvotes: 388

Gibolt
Gibolt

Reputation: 47097

Advanced, Reuseable Kotlin:

You can set the flag directly using setter method. In Kotlin or is the replacement for the Java bitwise or |.

intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK

If you plan to use this regularly, create an Intent extension function

fun Intent.clearStack() {
    flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
}

You can then directly call this function before starting the intent

intent.clearStack()

If you need the option to add additional flags in other situations, add an optional param to the extension function.

fun Intent.clearStack(additionalFlags: Int = 0) {
    flags = additionalFlags or Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
}

Upvotes: 4

Hally Trần
Hally Trần

Reputation: 49

add to Manifest for your activity android:launchMode="singleTask"

Upvotes: 1

Anurag Srivastava
Anurag Srivastava

Reputation: 473

finishAffinity() added in API 16. Use ActivityCompat.finishAffinity() in previous versions. When you will launch any activity using intent and finish the current activity. Now use ActivityCompat.finishAffinity() instead finish(). it will finish all stacked activity below current activity. It works fine for me.

Upvotes: 27

S.Sathya Priya
S.Sathya Priya

Reputation: 480

In API level 11 or greater, use FLAG_ACTIVITY_CLEAR_TASK and FLAG_ACTIVITY_NEW_TASK flag on Intent to clear all the activity stack.

Intent i = new Intent(OldActivity.this, NewActivity.class);
// set the new task and clear flags
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |  Intent.FLAG_ACTIVITY_CLEAR_TASK)
startActivity(i);

Upvotes: 2

Aristo Michael
Aristo Michael

Reputation: 2186

Use the following for activity

intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);

remove CLEAR_TASK flag for fragment use.

I hope this may use for some people.

Upvotes: 4

Prashant Kumar
Prashant Kumar

Reputation: 419

Use this

Intent i1=new Intent(getApplicationContext(),StartUp_Page.class);
i1.setAction(Intent.ACTION_MAIN);
i1.addCategory(Intent.CATEGORY_HOME);
i1.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i1.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
i1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(i1);
finish();

Upvotes: -2

Mohammad Adil
Mohammad Adil

Reputation: 533

Try this it will work:

Intent logout_intent = new Intent(DashboardActivity.this, LoginActivity.class);
logout_intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
logout_intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
logout_intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(logout_intent);
finish();

Upvotes: 2

Ian Wambai
Ian Wambai

Reputation: 223

None of the intent flags worked for me, but this is how I fixed it:

When a user signs out from one activity I had to broadcast a message from that activity, then receive it in the activities that I wanted to close after which I call finish(); and it works pretty well.

Upvotes: 2

Bunny
Bunny

Reputation: 586

You can try finishAffinity(), it closes all current activities and works on and above Android 4.1

Upvotes: 8

madx
madx

Reputation: 7203

For API 11+ you can use Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK like this:

Intent intent = new Intent(this, MyActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK);
this.startActivity(intent);

It will totally clears all previous activity(s) and start new activity.

Upvotes: 6

Matt Accola
Matt Accola

Reputation: 4142

To clear the activity stack completely you want to create a new task stack using TaskStackBuilder, for example:

Intent loginIntent = LoginActivity.getIntent(context);
TaskStackBuilder.create(context).addNextIntentWithParentStack(loginIntent).startActivities();

This will not only create a new, clean task stack, it will also allow for proper functioning of the "up" button if your LoginActivity has a parent activity.

Upvotes: 23

Mongi Zaidi
Mongi Zaidi

Reputation: 1041

What worked for me 

Intent intent = new Intent(getApplicationContext(), HomeActivity.class);
ComponentName cn = intent.getComponent();
Intent mainIntent = IntentCompat.makeRestartActivityTask(cn);
startActivity(mainIntent);

Upvotes: 10

Sujal Mandal
Sujal Mandal

Reputation: 1029

I am also facing the same issue..

in the login activity what i do is.

    Intent myIntent = new Intent(MainActivity.this, ActivityLoggedIn.class);
    finish();
    MainActivity.this.startActivity(myIntent);

on logout

   Intent myIntent = new Intent(ActivityLoggedIn.this, MainActivity.class);
   finish();
   ActivityLoggedIn.this.startActivity(myIntent);

This works well but when i am in the ActivityLoggedIn and i minimize the app and click on the launcher button icon on the app drawer, the MainActivity starts again :-/ i am using the flag

android:LaunchMode:singleTask

for the MainActivity.

Upvotes: 2

Anup Cowkur
Anup Cowkur

Reputation: 20553

Here is one solution to clear all your application's activities when you use the logout button.

Every time you start an Activity, start it like this:

Intent myIntent = new Intent(getBaseContext(), YourNewActivity.class);
startActivityForResult(myIntent, 0);

When you want to close the entire app, do this:

setResult(RESULT_CLOSE_ALL);
finish();

RESULT_CLOSE_ALL is a final global variable with a unique integer to signal you want to close all activities.

Then define every activity's onActivityResult(...) callback so when an activity returns with the RESULT_CLOSE_ALL value, it also calls finish():

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch(resultCode)
    {
    case RESULT_CLOSE_ALL:
        setResult(RESULT_CLOSE_ALL);
        finish();
    }
    super.onActivityResult(requestCode, resultCode, data);
}

This will cause a cascade effect that closes all your activities.

This is a hack however and uses startActivityForResult in a way that it was not designed to be used.

Perhaps a better way to do this would be using broadcast receivers as shown here:

On logout, clear Activity history stack, preventing "back" button from opening logged-in-only Activites

See these threads for other methods as well:

Android: Clear the back stack

Finish all previous activities

Upvotes: 32

Android
Android

Reputation: 3868

One possible solution what I can suggest you is to add android:launchMode="singleTop" in the manifest for my ProfileActivity. and when log out is clicked u can logoff starting again you LoginActivity. on logout u can call this.

Intent in = new Intent(Profile.this,Login.class);
                in.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(in);
                finish();

Upvotes: 6

Gaurav Vashisth
Gaurav Vashisth

Reputation: 7727

Just keep 

Intent intent = new Intent(ProfileActivity.this,
    LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
startActivity(intent);

Upvotes: 1

Related Questions