CODEWITHSUNDEEP
android
JohnRock
JohnRock

Reputation: 6875

How to kill an Android activity when leaving it so that it cannot be accessed from the back button?

In an given Android activity, I would like to start a new activity for the user at some point. Once they leave the first activity and arrive at the second, the first activity is stale and I want to remove it completely so it can not be accessed again from the back button.

How is the best way to accomplish this? How do I kill or destroy this activity immediately after the user has launched the new activity?

Upvotes: 147

Views: 222805

Answers (11)

Devang Shah
Devang Shah

Reputation: 79

You've below options to remove an activity from the back stack for a particular task.

  1. Call finish() method just after startActivity() like this:

         startActivity(new Intent(FirstActivity.this, SecondActivity.class));
     finish();

  2. Add an Intent flag like so:

         startActivity(new Intent(FirstActivity.this, SecondActivity.class).addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY));

  3. Add noHistory=true in your manifest file for that particular activity

Upvotes: 0

Dayo
Dayo

Reputation: 51

In Kotlin, you may use this

startActivity(Intent(context, newActivity::class.java))
finish()

Or you can use this also

val intent = Intent(context, newActivity::class.java))
startActivity(intent)
finish()

Upvotes: -1

Soni Kumar
Soni Kumar

Reputation: 303

You just need to use below code when launching the new activity.

startActivity(new Intent(this, newactivity.class));
finish();

Upvotes: -1

iamkdblue
iamkdblue

Reputation: 3632

Finally, I got a solution!

My Context is:- I want disconnect socket connection when activity destroyed, I tried to finish() activity but it didn't work me, its keep connection live somewhere.

so I use android.os.Process.killProcess(android.os.Process.myPid()); its kill my activity and i used android:excludeFromRecents="true" for remove from recent activity .

Upvotes: 3

SoftwareGuy
SoftwareGuy

Reputation: 1479

Add this attribute to you activity in manifest file. android:noHistory="true"

Upvotes: 0

Danke Xie
Danke Xie

Reputation: 1797

You can also add android:noHistory="true" to your Activity tag in AndroidManifest.xml.

<activity
            ...
            android:noHistory="true">
</activity>

Upvotes: 9

Jmorvan
Jmorvan

Reputation: 1040

you can use:

intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

Upvotes: 11

JBL AK-47
JBL AK-47

Reputation: 39

Write this in each "new activity" after you initialized your new intent-> 

Intent i = new Intent(this, yourClass.class);
startActivity(i);
finish();

Upvotes: 3

RobGThai
RobGThai

Reputation: 5969

Yes, all you need to do is call finish() in any Activity you would like to close.

Upvotes: 6

jqpubliq
jqpubliq

Reputation: 11904

Setting android:noHistory="true" on the activity in your manifest will remove an activity from the stack whenever it is navigated away from. see here

Upvotes: 111

CaseyB
CaseyB

Reputation: 25058

You just need to call finish()

Intent intent = new Intent(this, NextActivity.class);
startActivity(intent);
finish();

Upvotes: 260

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