Actually, the loading images from URL to ImageView (ImageView itself is in GridView or ListView) is not a simple task. You should provide memory and disk caching to avoid reload image again and again.
Tag: android
HttpClient, HttpUrlConnection
ProgressDialog, ProgressBar
The simpliest way to show progress in ActionBar is
[code language=”java”]
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.activity_main);
[/code]
DPI, size, pixels
Android, Activity, Fragment, Navigation drawer
About fragments on android.com
Navigation drawer: example 1, example 2, url (pdf)
Simplifying the FragmentManager API: Multiple Fragment backstacks on Android [https://proandroiddev.com/simplifying-the-fragmentmanager-api-multiple-fragment-backstacks-on-android-9b64ddb0d654]
Continue reading Android, Activity, Fragment, Navigation drawer