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Android Tutorial in PDF - Learn Android Programming and how to develop android mobile phone and ipad applications starting from Environment setup. This tutorial describes how to create Android applications with Eclipse. It is based on Eclipse (Juno), Java and Android (Jelly Bean). Install the Android SDK starter package from: iningilworkren.tk iningilworkren.tk ○ In Eclipse, install the ADT (Android Developer. Tools) plugin.
For the purposes of this example, therefore, some changes are needed to the template BoundService class created in the preceding section.
In the first instance, a Binder subclass needs to be declared. This class will contain a single method named getService which will simply return a reference to the current service object instance represented by the this keyword.
With these requirements in mind, edit the BoundService. IBinder; import android. First, a new subclass of Binder named MyLocalBinder is declared. download the fully updated Android Studio 3. SimpleDateFormat; import java. Date; import java. Locate and double-click on the AndroidManifest.
Edit the LocalBoundActivity. AppCompatActivity; import android. Bundle; import android.
Context; import android. ComponentName; import android.
ServiceConnection; import com. The method is passed as an argument the IBinder object returned by the onBind method of the service.
A Boolean flag is used to indicate that the connection has been successfully established. The onServiceDisconnected method is called when the connection ends and simply sets the Boolean flag to false.
Having established the connection, the next step is to modify the activity to bind to the service. On completion of these changes, the layout should resemble that illustrated in Figure Complete the user interface design by selecting the Button and configuring the onClick property to call a method named showTime.
Finally, edit the code in the LocalBoundActivity. This means that every mobile device that is Android enabled will be able to support and run these apps. With the growing popularity of Android mobile devices, developers can take advantage of this trend by creating and uploading their apps on the Android Market for distribution to anyone who wants to download it.
Given that Android is an open-source platform, and the fact that different Android operating systems have been released on different mobile devices, there's no clear cut policy to how applications can adapt with various OS versions and upgrades. One app that runs on this particular version of Android OS may or may not run on another version.
Another disadvantage is that since mobile devices such as phones and tabs come in different sizes and forms, it poses a challenge for developers to create apps that can adjust correctly to the right screen size and other varying features and specs.
Adb is short for Android Debug Bridge. It allows developers the power to execute remote shell commands.
Its basic function is to allow and control communication towards and from the emulator port. Active — if the activity is at the foreground Paused — if the activity is at the background and still visible Stopped — if the activity is not visible and therefore is hidden or obscured by another activity Destroyed — when the activity process is killed or completed terminated 19 What is ANR? This is actually a dialog that appears to the user whenever an application have been unresponsive for a long period of time.
Among the different elements, the and elements must be present and can occur only once. The rest are optional, and can occur as many times as needed.