AsyncTask
An AsyncTask lets you perform operations in the background. When they’ve finished running, it then allows…
AppCompatActivity class
The AppCompatActivity class is a subclass of Activity. It lives in the AppCompat Support Library, and…
Support Libraries
The Android Support Libraries provide backward compatibility with older versions of Android. THey sit outside the…
What fragment code looks like
When you create a fragment, Android Studio creates two files for you: Java code for the…
android:gravity
android:gravity=”value” android:gravity lets you say where you want the view’s contents to appear inside the view…
android:layout_gravity
android:layout_gravity lets you say where you want views to appear in their available space. android:layout_gravity deals…
LinearLayout
How you specify a linear layout You specify a linear layout using <LinearLayout>. You must specify…
The State of an activity
When Android creates and destroys an activity, the activity moves from being launched to running to…
Handlers allow you to schedule code
In non-Android Java, you can perform tasks like using a background thread. In Android, that approach…
AndroidManifest.xml
Every Android app must include a file called AndroidManifest.xml. You can find it in the app/src/main…
Use a custom Class in Android Studio
Add a cutom class to an Android project by going to File menu -> New ->…
String Resource Files
string.xml is the default resource file used to hold name/value pairs of Strings sot that they…
Activities
Activities are the unique screen pages in Android! An activity is a single focused thing your…
Code example for "setContentView ()"
SetContentView (): Set up the app’s user interface. You can consider your object or ID to…
@OVERRIDE
Makes compiler aware that the following method should override a method of the same name from…
Project setup in Android studio
Project view has two main paths: App: Here lies the actual source code of the app,…
Starting a project
When creating a project, it is possible to determine whether an eAPP should be backwards compatible.…