Backup APK installed application in Android example

Backup APK installed application in Android example

This post about how to take installed application APK Backup.
Below i given example for How to take backup APK.

Create List and CustomAdapter layout View
myactivity.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

     android:background="#5f6263"

    android:layout_height="match_parent" >

    <ListView

        android:id="@+id/appList"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_above="@+id/backUpBtn"

        android:background="#636260"

         android:visibility="gone"

        android:horizontalSpacing="1dp"

        android:verticalSpacing="1dp" >

    </ListView>

    <Button

        android:id="@+id/backUpBtn"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentBottom="true"

        android:layout_alignParentLeft="true"

        android:layout_alignParentRight="true"

        android:text="Backup All" />

    <ProgressBar

        android:id="@+id/progressBar1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true" />

</RelativeLayout>

adapter_layout.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:background="#5f6263"

   android:paddingTop="5dip"

   android:paddingLeft="10dip"

   android:paddingRight="10dip"

    >

<ImageView

    android:id="@+id/appIcon"

    android:layout_width="48dip"

    android:layout_height="48dip"

    android:layout_alignParentLeft="true"

    android:layout_alignParentTop="true"

    android:background="@drawable/ic_launcher" />

<TextView

    android:id="@+id/applicationName"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:layout_alignParentRight="true"

    android:textColor="#1cbcf8"

     android:paddingLeft="10dp"

    android:textSize="19dp"

    android:layout_alignParentTop="true"

    android:layout_toRightOf="@+id/appIcon"

    android:text="" />

<Button

    android:id="@+id/back_btn"

    style="?android:attr/buttonStyleSmall"

    android:layout_width="wrap_content"

    android:textColor="#1cbcf8"

    android:layout_height="wrap_content"

    android:layout_alignParentRight="true"

    android:layout_below="@+id/applicationName"

    android:text="Backup" />

</RelativeLayout>

Add the Following permission in manifest

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.example.backupapk"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="19" />

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.example.backupapk.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>

    </application>

</manifest>

Back up single apkmethod

private void backupSingleApp(int position){

              File apkSourceDirec = new File(appList.get(position).apkSourceDir);

              try {

                     String file_name =appList.get(position).apkName;

                     File fileDirectry = new File(Environment.getExternalStorageDirectory()

                                  .toString() + "/iam_VJ_backUp_APK");

                     fileDirectry.mkdirs();

                     fileDirectry = new File(fileDirectry.getPath() + "/" + file_name + ".apk");

                     fileDirectry.createNewFile();

                     InputStream in = new FileInputStream(apkSourceDirec);

                     OutputStream out = new FileOutputStream(fileDirectry);

                     byte[] buf = new byte[1024];

                     int len;

                     while ((len = in.read(buf)) > 0) {

                           out.write(buf, 0, len);

                     }

                     in.close();

                     out.close();

                     Log.e("file_name--", "File copied. ");

              } catch (FileNotFoundException ex) {

                    

              } catch (IOException e) {

                     System.out.println(e.getMessage());

              }

      

}

Backup all APK

private void backupAllApp(){

      

       for(int i = 0; i<appList.size(); i++){

       File apkSourceDirec = new File(appList.get(i).apkSourceDir);

       try {

              String file_name =appList.get(i).apkName;

              File fileDirectry = new File(Environment.getExternalStorageDirectory()

                           .toString() + "/iam_VJ_backUp_APK");

              fileDirectry.mkdirs();

              fileDirectry = new File(fileDirectry.getPath() + "/" + file_name + ".apk");

              fileDirectry.createNewFile();

              InputStream in = new FileInputStream(apkSourceDirec);

              OutputStream out = new FileOutputStream(fileDirectry);

              byte[] buf = new byte[1024];

              int len;

              while ((len = in.read(buf)) > 0) {

                     out.write(buf, 0, len);

              }

              in.close();

              out.close();

              Log.e("file_name--", "File copied. ");

       } catch (FileNotFoundException ex) {

             

       } catch (IOException e) {

              System.out.println(e.getMessage());

       }

}}

Backup apk file path folder highlighted in Blue color

Full Activity Source Code

package com.example.backupapk;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import android.support.v7.app.ActionBarActivity;

import android.app.Activity;

import android.app.ProgressDialog;

import android.content.Intent;

import android.content.pm.ResolveInfo;

import android.os.AsyncTask;

import android.os.Bundle;

import android.os.DropBoxManager.Entry;

import android.os.Environment;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.ProgressBar;

import android.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

import android.os.Build;

public class MainActivity extends ActionBarActivity {

        List appPakageList ;

     Intent intent ;

     BackApkStructure backStr;

     ListView listView;

     ArrayList<BackApkStructure> appList = new ArrayList<BackApkStructure>();

     ProgressBar progressBar;

     Button backUpAllBtn;

     private HashMap<Integer, Integer> myChecked = new HashMap<Integer, Integer>();

    

     int selectedPosition;

       @Override

       protected void onCreate(Bundle savedInstanceState) {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.myactivity);

             

             

               intent = new Intent(Intent.ACTION_MAIN, null);

               intent.addCategory(Intent.CATEGORY_LAUNCHER);

               appPakageList = getPackageManager().queryIntentActivities(intent, 0);

             

               listView = (ListView)findViewById(R.id.appList);

               backUpAllBtn = (Button )findViewById(R.id.backUpBtn);

               progressBar = (ProgressBar)findViewById(R.id.progressBar1);

               ListAppAsyncTask listApp = new ListAppAsyncTask();

               listApp.execute();

               backUpAllBtn.setOnClickListener(new OnClickListener() {

                    

                     @Override

                     public void onClick(View arg0) {

                           BackUpAllAppAsyncTask backupAllApk = new BackUpAllAppAsyncTask();

                           backupAllApk.execute();

                          

                     }

              });

             

             

       }

       public class ListAppAsyncTask extends AsyncTask<String, Void, String> {

              @Override

              protected void onPreExecute() {

                     super.onPreExecute();

                    

                    

                    

              }

              @Override

              protected String doInBackground(String... params) {

                     for (Object objevt : appPakageList) {

                           ResolveInfo resolveInFo = (ResolveInfo) objevt;

                           backStr = new BackApkStructure();

                           backStr.apkSourceDir = resolveInFo.activityInfo.applicationInfo.publicSourceDir;

                           backStr.apkName = resolveInFo.loadLabel(getPackageManager()).toString();

                         backStr.icons  =resolveInFo.loadIcon(getPackageManager());

                         appList.add(backStr);

                     }

                    

                     return null;

              }

              @Override

              protected void onPostExecute(String result) {

                    

                     InstalledAppAdapter adapter = new InstalledAppAdapter(MainActivity.this,

                                  appList);

                     listView.setAdapter(adapter);

                     progressBar.setVisibility(View.GONE);

                     listView.setVisibility(View.VISIBLE);

                     super.onPostExecute(result);

              }

       }

      

      

public class InstalledAppAdapter extends  BaseAdapter {

       Activity activity;

       ArrayList<BackApkStructure> appStrucutreList;

      

       public InstalledAppAdapter(Activity act, ArrayList<BackApkStructure> appStructure) {

             

              this.activity = act;

              this.appStrucutreList = appStructure;

             

             

             

       }

       @Override

       public int getCount() {

              // TODO Auto-generated method stub

              return appStrucutreList.size();

       }

       @Override

       public Object getItem(int arg0) {

             

              return arg0;

       }

       @Override

       public long getItemId(int arg0) {

              // TODO Auto-generated method stub

              return arg0;

       }

       @Override

       public View getView(final int position, View view, ViewGroup arg2) {

      

              LayoutInflater inflator =(LayoutInflater)activity.getSystemService(activity.LAYOUT_INFLATER_SERVICE);

              view = inflator.inflate(R.layout.adapter_layout, null);

             

              TextView appName = (TextView)view.findViewById(R.id.applicationName);

              ImageView appIcon = (ImageView)view.findViewById(R.id.appIcon);

              Button backBtn = (Button)view.findViewById(R.id.back_btn);

              appName.setText(appStrucutreList.get(position).apkName);

              appIcon.setBackgroundDrawable(appStrucutreList.get(position).icons);

             

              backBtn.setOnClickListener(new OnClickListener() {

                     @Override

                     public void onClick(View arg0) {

                           selectedPosition = position;

                           BackUpSingleAppAsyncTask backApp = new BackUpSingleAppAsyncTask();

                           backApp.execute();

                     }

              });

              return view;

       }

}

public class BackUpSingleAppAsyncTask extends AsyncTask<String, Void, String> {

       ProgressDialog progress;

       @Override

       protected void onPreExecute() {

              super.onPreExecute();

              progress = new ProgressDialog(MainActivity.this);;

              progress.setMessage("Please wait...App backup...");

              progress.setCancelable(false);

              progress.show();

             

       }

       @Override

       protected String doInBackground(String... params) {

              String result = null;

              backupSingleApp(selectedPosition);

              return result;

       }

       @Override

       protected void onPostExecute(String result) {

              progress.dismiss();

              Toast.makeText(MainActivity.this, "Application successfully Backup.", Toast.LENGTH_LONG).show();

              super.onPostExecute(result);

       }

}

public class BackUpAllAppAsyncTask extends AsyncTask<String, Void, String> {

       ProgressDialog progress;

       @Override

       protected void onPreExecute() {

              super.onPreExecute();

              progress = new ProgressDialog(MainActivity.this);;

              progress.setMessage("Please wait...App backup...");

              progress.setCancelable(false);

              progress.show();

             

       }

       @Override

       protected String doInBackground(String... params) {

              String result = null;

            backupAllApp();

              return result;

       }

       @Override

       protected void onPostExecute(String result) {

              progress.dismiss();

              Toast.makeText(MainActivity.this, "Application successfully Backup.", Toast.LENGTH_LONG).show();

              super.onPostExecute(result);

       }

}

private void backupSingleApp(int position){

              File apkSourceDirec = new File(appList.get(position).apkSourceDir);

              try {

                     String file_name =appList.get(position).apkName;

                     File fileDirectry = new File(Environment.getExternalStorageDirectory()

                                  .toString() + "/iam_VJ_backUp_APK");

                     fileDirectry.mkdirs();

                     fileDirectry = new File(fileDirectry.getPath() + "/" + file_name + ".apk");

                     fileDirectry.createNewFile();

                     InputStream in = new FileInputStream(apkSourceDirec);

                     OutputStream out = new FileOutputStream(fileDirectry);

                     byte[] buf = new byte[1024];

                     int len;

                     while ((len = in.read(buf)) > 0) {

                           out.write(buf, 0, len);

                     }

                     in.close();

                     out.close();

                     Log.e("file_name--", "File copied. ");

              } catch (FileNotFoundException ex) {

                    

              } catch (IOException e) {

                     System.out.println(e.getMessage());

              }

      

}

private void backupAllApp(){

      

       for(int i = 0; i<appList.size(); i++){

       File apkSourceDirec = new File(appList.get(i).apkSourceDir);

       try {

              String file_name =appList.get(i).apkName;

              File fileDirectry = new File(Environment.getExternalStorageDirectory()

                           .toString() + "/iam_VJ_backUp_APK");

              fileDirectry.mkdirs();

              fileDirectry = new File(fileDirectry.getPath() + "/" + file_name + ".apk");

              fileDirectry.createNewFile();

              InputStream in = new FileInputStream(apkSourceDirec);

              OutputStream out = new FileOutputStream(fileDirectry);

              byte[] buf = new byte[1024];

              int len;

              while ((len = in.read(buf)) > 0) {

                     out.write(buf, 0, len);

              }

              in.close();

              out.close();

              Log.e("file_name--", "File copied. ");

       } catch (FileNotFoundException ex) {

             

       } catch (IOException e) {

              System.out.println(e.getMessage());

       }

}}

}

BackApkStructure.class

import android.graphics.drawable.Drawable;

public class BackApkStructure {

       public Drawable icons;

       public String apkName;

       public String apkSourceDir;

      

}

Back apk is highlighted .

Download Source Code HERE