Tuesday, November 17, 2015

Session Time Out Android Demo Application





Description:

Android application which has Login/Logout functionality , They need this type of functionality. In Web / Java Applications Session Time out is given by default but in android there is no default functionality like this.

Here is the example, in which go to next screen and keep screen un-touch for 30 sec. It will show you session time out to alert and when you press "ok" button it will redirect to previous screen.

Here is the full source code:

activity_main.xml


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:padding="10dp" >

     <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="40dp"
        android:layout_weight="1"
        android:src="@drawable/logo" />
     
    <TextView
        android:id="@+id/textView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textAlignment="center"
        android:text="Go To next screen and hold for 30 sec. It will automatically give you session timeout warning and redirect this page again."
        android:layout_marginBottom="10dp"
        android:textSize="22dp" />

     <Button
        android:id="@+id/buttonNextScreen"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="Go To Next Screen" />
   
</LinearLayout>

MainActivity.java


import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {

Button btnGoToNext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnGoToNext = (Button) findViewById(R.id.buttonNextScreen);
btnGoToNext.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
startActivity(intent);
}
});
}
}


Now, Create another Activity called SecondActivity.java


activity_second.xml


<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:textSize="22dp"
        android:padding="10dp"
        android:textAlignment="center"
        android:text="Keep untouch this screen for 30 sec. It will show dialog box." />

</RelativeLayout>


SecondActivity.java


import android.os.Bundle;

public class SecondActivity extends MyBaseActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
}
}


Main thing is, In which screen / Activity you want to add session timeout , you need to implement "MyBaseActivity" instead of "Activity".


MyBaseActivity.java


import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Handler;
import android.os.Message;

public class MyBaseActivity extends Activity {

public static final long DISCONNECT_TIMEOUT = 30000; // 30 sec = 30 * 1000 ms

private Handler disconnectHandler = new Handler() {
public void handleMessage(Message msg) {
}
};

private Runnable disconnectCallback = new Runnable() {
@Override
public void run() {

AlertDialog.Builder alertDialog = new AlertDialog.Builder(
MyBaseActivity.this);
alertDialog.setCancelable(false);
alertDialog.setTitle("Alert");
alertDialog
.setMessage("Session Timeout, Hit ok to go to previous screen.");
alertDialog.setNegativeButton("OK",
new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(MyBaseActivity.this,
MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK
| Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);

dialog.cancel();
}
});

alertDialog.show();

// Perform any required operation on disconnect
}
};

public void resetDisconnectTimer() {
disconnectHandler.removeCallbacks(disconnectCallback);
disconnectHandler.postDelayed(disconnectCallback, DISCONNECT_TIMEOUT);
}

public void stopDisconnectTimer() {
disconnectHandler.removeCallbacks(disconnectCallback);
}

@Override
public void onUserInteraction() {
resetDisconnectTimer();
}

@Override
public void onResume() {
super.onResume();
resetDisconnectTimer();
}

@Override
public void onStop() {
super.onStop();
stopDisconnectTimer();
}
}


AndroidMenifest.xml


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="session.time.out"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            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=".SecondActivity"
            android:label="@string/title_activity_second" >
        </activity>
    </application>

</manifest>


Download Full Source Code: GitHub


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