disable android back button single click from first activity?

Question

i'm working in and android application my app contains more than 10 activities(say activity A,B etc) in which the first activity is a splash screen and next one is a list view on selecting items in a listview navigating to another different activities.my problem is that when i single press hardware back button from any inner activities(A,B,C etc)it must navigate to the listview
and when i double press the back button from any other activities the app must get closed.till here the app works perfectly.but my problem is that when i press the back button once from my any of the inner page it navigate to listview then if i press the back button once from listview my app is geting exited i dont want this i need my app gets closed only when i double click the back button from the listview.is it possible?

my code for button press is this

public void onBackPressed() {
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_HOME);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(intent);
        finish();
}

and my manifest.xml

       <activity
        android:name="learnersseries.mathematics.complexnumbers.Firstintro"
         android:screenOrientation="portrait" 
         android:launchMode="singleTop"            
        android:label="@string/app_name" >


        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />

        </intent-filter>
    </activity>


    <activity android:name="Myintegralpage"
        android:screenOrientation="portrait"
                   >

        <intent-filter></intent-filter>
    </activity>
    <activity android:name="myimagine"
        android:screenOrientation="portrait" 

       >
        <intent-filter></intent-filter>
    </activity>
    <activity android:name="Myintroductionpage"
        android:screenOrientation="portrait" 

      >
        <intent-filter></intent-filter>
    </activity>
    <activity android:name="MainActivity"
        android:noHistory="false"
        android:screenOrientation="portrait" 
       >


        <intent-filter></intent-filter>
    </activity>
    <activity android:name="Complexnumbers"
        android:screenOrientation="portrait"
         >

        <intent-filter></intent-filter>
    </activity>
    <activity android:name="Equality"
        android:screenOrientation="portrait"
         >

Possible duplicate of [Android close app on back button](http://stackoverflow.com/questions/19109529/android-close-app-on-back-button) — Lokesh Tiwari, Nov 19 '15 at 19:52

Seshu Vinay · Answer 1 · 2014-10-25T07:10:54.010

0

@Override
public void onBackPressed() {

    if (back_pressed + 1000 > System.currentTimeMillis()) { //back_pressed is long

           //double click

    } else {
            back_pressed = System.currentTimeMillis();
            //single click
    }

}

edited Oct 25 '14 at 07:10

answered Oct 25 '14 at 07:04

Seshu Vinay

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no its not working.i'm forced to click the hardware back button thrice from any inner activities to exit the app now. – Thushara prasad Oct 25 '14 at 08:51
increase 1000 to 2000. It's number of milliseconds between clicks. – Seshu Vinay Oct 25 '14 at 08:52
also if i double press the back button from listview my app get closed.the problem is that if i press twice from any inner activities its not getting closed . – Thushara prasad Oct 25 '14 at 08:53
This code just detects if button is single clicked or double clicked. Let me know if this works by just placing a toast. And I thought you should be able to handle the rest. – Seshu Vinay Oct 25 '14 at 08:55
private static final int TIME_INTERVAL = 2000; private long mBackPressed; @Override public void onBackPressed() { if (mBackPressed + TIME_INTERVAL > System.currentTimeMillis()) { super.onBackPressed(); return; } else { Toast.makeText(getBaseContext(), "Tap back button in order to exit", Toast.LENGTH_SHORT).show(); } mBackPressed = System.currentTimeMillis(); } } – Thushara prasad Oct 25 '14 at 08:56
no.only in the main activity .shall i need to add it in all my activities?? – Thushara prasad Oct 25 '14 at 09:05
sorry.how is it possible?if i press back button once from my inner activities it must navigate to my listview .if i add this code to my inner activities i will be forced to press the back button twice to go to the listview. – Thushara prasad Oct 25 '14 at 09:13

disable android back button single click from first activity?

1 Answers1