Utils.java

package in.google.android.sample;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.util.Log;

/**
 * @author Swapnil Sonar
 * @Date 01/07/2015
 */
public class Utils {

	private static final String TAG = "Utils";
	
	/**
	 * It return all installed applications and along with its details.
	 * @param context
	 * @param getSysPackages
	 * @return
	 */
	public static List<PackageInfoBean> getInstalledApps(Context context, boolean getSysPackages) {

		List<PackageInfoBean> mPackageInfos = new ArrayList<PackageInfoBean>();
		
        long timeStamp = System.currentTimeMillis();
        List<PackageInfo> packs = context.getPackageManager().getInstalledPackages(0);

        for (int i = 0; i < packs.size(); i++) {
        	PackageInfo packageInfo = packs.get(i);
        	ApplicationInfo appInfo = packageInfo.applicationInfo;

        	if (((appInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 1) && !getSysPackages) {
        		//NOP
        	}else{

        		PackageInfoBean newInfo = new PackageInfoBean();
        		newInfo.mAppName = appInfo.loadLabel(context.getPackageManager());
        		newInfo.mAppPackageName = packageInfo.packageName;
        		newInfo.mDataDir = appInfo.dataDir;

        		// .apk file of application
        		newInfo.mApkFilePath = appInfo.publicSourceDir; 

        		// apk file size
        		File file = new File(newInfo.mApkFilePath);
        		newInfo.mApkFileSize = file.length();

        		newInfo.mVersionName = packageInfo.versionName;
        		newInfo.mVersionCode = packageInfo.versionCode;
        		newInfo.mApplicationInfo = packageInfo.applicationInfo;
        		newInfo.icon = appInfo.loadIcon(context.getPackageManager());
        		mPackageInfos.add(newInfo);

        	}

        }

        long timeInterval = System.currentTimeMillis() - timeStamp;
        Log.e(TAG, "getInstalledApps used: " + timeInterval);
        
        return mPackageInfos;
    }
}