How to Go to home screen programmatically

Question

I want to go to the home screen(Minimize App) programmatically in Android when the user clicks on button How can this be done?

I have Tried this approach but its giving Fatal Exception: java.lang.SecurityException Exception for some devices.

Can anyone help me out with this?

How is this useful for a user? If user wants to go home, he can just press the home button. — m0skit0, Mar 27 '20 at 10:18
Does the app have to be paused? Otherwise, just call 'finish()' and the app is closed. — bytesculptor, Mar 27 '20 at 10:19
when we press home button it will pause app and minimize app,i want this behaviour — Rajendra Dabhi, Mar 27 '20 at 10:20
@m0skit0 its a requirement of client,he dont want that all activity got closed he just want to minimize, — Rajendra Dabhi, Mar 27 '20 at 10:23
It's very difficult to debug a crash without a stack trace. See [Unfortunately MyApp has stopped. How can I solve this?](https://stackoverflow.com/questions/23353173) for Android-specific advice, and [What is a stack trace, and how can I use it to debug my application errors?](https://stackoverflow.com/questions/3988788) for advice on what to do once you have the stack trace. If you still need help, edit your question to include the **complete stack trace**, as well as **which line of your code** the stack trace points to. — Ryan M, Mar 27 '20 at 10:35

score 0 · Answer 1 · answered Mar 27 '20 at 10:31

0

When you press back button, you can use this to go to home screen of phone

private fun goToHomeScreen() {
    val startMain = Intent(Intent.ACTION_MAIN)
    startMain.addCategory(Intent.CATEGORY_HOME)
    startMain.flags = Intent.FLAG_ACTIVITY_NEW_TASK
    startActivity(startMain)
}

But its not a best practice of programming because if phone doesn't have more memory then your app will be automatically killed in the background. Your app will be resumed if there's memrory left in the phone.

answered Mar 27 '20 at 10:31

Kishan Solanki

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Quoting OP: I have Tried this approach but its giving Fatal Exception: java.lang.SecurityException Exception for some devices. – m0skit0 Mar 27 '20 at 10:32
which phone and os? – Kishan Solanki Mar 27 '20 at 10:33
"if phone doesn't have more memory then your app will be automatically killed in the background" isn't why this isn't a best practice...that's just how Android apps work. – Ryan M Mar 27 '20 at 10:34
If you want to resume your app then it is not a valid solution that's I am saying ! @Ryan M – Kishan Solanki Mar 27 '20 at 10:36
Galaxy tab s4 and its has 1.5gb free ram and 45gb memory free at that time when it crashed by above exception – Rajendra Dabhi Mar 27 '20 at 10:36
It is a valid solution if you have written your onSaveInstanceState and state restoration correctly. – Ryan M Mar 27 '20 at 10:36
I just want to understand this why this error said that security exception "java.lang.SecurityException Exception" – Rajendra Dabhi Mar 27 '20 at 10:38

Jayanth · Accepted Answer · 2020-03-27T10:48:45.037

0

You can use the following method

this.moveTaskToBack(true); //if you are inside activity

Elsewhere

activity.moveTaskToBack(true); //activity is the reference of your Activity.

Read more about this method here moveToBack)

edited Mar 27 '20 at 10:48

answered Mar 27 '20 at 10:37

Jayanth

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can you explain ? – Rajendra Dabhi Mar 27 '20 at 10:42
please read this https://developer.android.com/reference/android/app/Activity#moveTaskToBack(boolean) – Jayanth Mar 27 '20 at 10:44
I have single activity and all the task is done by fragment transaction and replacement of it – Rajendra Dabhi Mar 27 '20 at 10:53
It moves the task which has the activity to the back of the stack. So it works. Try it – Jayanth Mar 27 '20 at 10:55
okay ill try and let you know – Rajendra Dabhi Mar 27 '20 at 10:56
Thanks, But its not working , this solution recreating the activity and all fragment loaded again – Rajendra Dabhi Mar 27 '20 at 11:11
no, it won't recreate the activity. it only stops the activity ondestroy() will not be called this way. please put logs and test this method. – Jayanth Mar 27 '20 at 11:17
if all the fragments are loading again then you should look in to the code where you initialise fragments. – Jayanth Mar 27 '20 at 11:18
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/210428/discussion-between-rajendra-dabhi-and-jayanth). – Rajendra Dabhi Mar 27 '20 at 11:20

How to Go to home screen programmatically

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