according to the read me: “Curriculum originally developed by Pamela Fox”  i think the classes where free. but i dont know where i get it from.

link to the rar:

https://drive.google.com/file/d/0B2Gltk_LlAG4MllzY2d0ejBVaGc/view?usp=sharing

link to the folder where i will be putting more javascript learning stuff:

https://drive.google.com/folderview?id=0B2Gltk_LlAG4fmhpMzN0V0toQmNLdl93aU9NMGhnY25CYm1IWFRrem11TGl6ekxzM3NSamM&usp=sharing

/*

List apps = getPackageManager().getInstalledPackages(0);

This method returns the list of PackageInfo (which contains overall information about the contents of a package). In other words, the method getInstalledPackages() will return a list containing all the information about all the installed application.

In this example, we will extract just the informations (packageName, appName, versionName, versionCode, and the icon), so we create a bean to store this informations:

*/

public class AppInfo {

    private String name;

    private String packageName;

    private String versionName;

    private int versionCode = 0;

    private Drawable icon;

    public AppInfo() {}

    public Intent getLaunchIntent(Context context) {

        Intent intentLaunch = context.getPackageManager().getLaunchIntentForPackage(this.packageName);

        return intentLaunch;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getPackageName() {

        return packageName;

    }

    public void setPackageName(String packageName) {

        this.packageName = packageName;

    }

    public String getVersionName() {

        return versionName;

    }

    public void setVersionName(String versionName) {

        this.versionName = versionName;

    }

    public int getVersionCode() {

        return versionCode;

    }

    public void setVersionCode(int versionCode) {

        this.versionCode = versionCode;

    }

    public Drawable getIcon() {

        return icon;

    }

    public void setIcon(Drawable icon) {

        this.icon = icon;

    }

}

/*

The last thing is to extract the application’s informations from the list of installed apps and store them in arraylist :

*/

/**

* get the list of all installed applications in the device

*@return ArrayList of installed applications or null

*/

private static ArrayList getListOfInstalledApp(Context context) {

    PackageManager packageManager = context.getPackageManager();

    List apps = packageManager.getInstalledPackages(PackageManager.SIGNATURE_MATCH);

    if (apps != null && !apps.isEmpty()) {

        ArrayList installedApps = new ArrayList();

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

            PackageInfo p = apps.get(i);

            ApplicationInfo appInfo = null;

            try { 

                appInfo = packageManager.getApplicationInfo(p.packageName, 0);

                AppInfo app = new AppInfo(); 

                app.setName(p.applicationInfo.loadLabel(packageManager).toString()); 

                app.setPackageName(p.packageName); 

                app.setVersionName(p.versionName); 

                app.setVersionCode(p.versionCode); 

                app.setIcon(p.applicationInfo.loadIcon(packageManager)); 

                //check if the application is not an application system 

                Intent launchIntent = app.getLaunchIntent(context); 

                if(launchIntent != null && (appInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) 

                    installedApps.add(app); 

                } catch (NameNotFoundException e) { 

                   e.printStackTrace(); 

                } 

            } 

            //sort the list of applications alphabetically 

            if (installedApps.size() > 0) {

                Collections.sort(installedApps, new Comparator() {

                   @Override

                    public int compare(final AppInfo app1, final AppInfo app2) {

                        return app1.getName().toLowerCase(Locale.getDefault()).compareTo(app2.getName().toLowerCase(Locale.getDefault()));

                    }

                });

            }

        return installedApps;

    }

    return null;

}

/*

After getting those informations about installed applications, we can display them using ListViewor GridView .

Finally, to launch an installed application directly from your application, all what you need is to retrieve the launch Intent from the appInfo instance and starts the app :

*/

ArrayList installedApps = getListOfInstalledApp(this);

Intent launchIntent = installedApps.get(0).getLaunchIntent(this);

if(launchIntent != null)

    startActivity(launchIntent);