MainActivity.java

package com.gronic.updater;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class MainActivity extends AppCompatActivity {

    private static final  String TAG = "GRONIC_UPDATER";
    private String mFileName;
    private Context mContext;
    private boolean mStartAfterInstall;
    private TextView mTextView;
    private String mAppName;
    private String mPackename;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        IntentFilter filter = new IntentFilter("com.gronic.UPDATE_APP");
        mContext = MainActivity.this;
        mTextView = (TextView) findViewById(R.id.txtInfo);
        mStartAfterInstall = getIntent().getBooleanExtra("start",false);
        mFileName = getIntent().getStringExtra("filename");

        PackageManager pm = getPackageManager();
        mAppName = getAppLabel(pm,mFileName);
        mPackename = getPackageManager().getPackageArchiveInfo(mFileName,0).packageName;

        mTextView.setText("Installing " + mAppName + "\n" + mPackename);

        new InstallTask().execute();

    }


    public class InstallTask  extends AsyncTask{
        String mLine;
        @Override
        protected Object doInBackground(Object[] objects) {



            try {
                Process p = Runtime.getRuntime().exec( "pm install -r " + mFileName);

                BufferedReader in = new BufferedReader(
                        new InputStreamReader(p.getInputStream()) );

                while ((mLine = in.readLine()) != null) {
                    System.out.println(mLine);
                }
                in.close();


                publishProgress(new String[]{mLine});

                in = new BufferedReader (
                        new InputStreamReader(p.getErrorStream()) );

                while ((mLine = in.readLine()) != null) {
                    System.out.println(mLine);
                }
                in.close();

                p.waitFor();

                Log.d(TAG,"Installed ? ");
            }
            catch (Exception e) {

                mLine = "install failed " + e.getMessage();
            }
//

            return mLine;

        }

        @Override
        protected void onPostExecute(Object o) {
            super.onPostExecute(o);

//            Toast.makeText(mContext,(String) o, Toast.LENGTH_LONG).show();

            if(mStartAfterInstall){
                if(isPackageInstalled(mPackename)){
                    Intent i = getPackageManager().getLaunchIntentForPackage(mPackename);
                    startActivity(i);
                }
            }
            else{
                Intent startMain = new Intent(Intent.ACTION_MAIN);
                startMain.addCategory(Intent.CATEGORY_HOME);
                startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                startActivity(startMain);
            }

//            finishAndRemoveTask();

        }


    }

    @Override
    protected void onResume() {

        super.onResume();
    }

    public static String getAppLabel(PackageManager pm, String pathToApk) {
        PackageInfo packageInfo = pm.getPackageArchiveInfo(pathToApk, 0);

        packageInfo.applicationInfo.sourceDir = pathToApk;
        packageInfo.applicationInfo.publicSourceDir = pathToApk;

        CharSequence label = pm.getApplicationLabel(packageInfo.applicationInfo);

        return label != null ? label.toString()  : "";

    }

    private boolean isPackageInstalled(String packagename) {
        try {
            getPackageManager().getPackageInfo(packagename, 0);
            return true;
        } catch (PackageManager.NameNotFoundException e) {
            return false;
        }
    }
}