Manage Activity Configuration

Traditionally activities are configuration in the `AndroidManifest.xml` or in `onCreate()`. `IckleActivity` instances isolate the configuration on the activity definition itself using annotations.

####1. Specify Title and Layout

Use @Title to specify the action bar title and @Layout to set the content view.

@Layout(R.layout.act_home)
@Title(R.string.ttl_act_home)
public class HomeActivity extends IckleActivity {
}

####2. Enable Fullscreen

Use @Fullscreen to hide the action and status bars.

@Fullscreen
@Layout(R.layout.act_home)
public class HomeActivity extends IckleActivity {
}

####3. Request Window Features

Use @WindowFeatures to request further configuration.

@Layout(R.layout.act_home)
@Title(R.string.ttl_act_home)
@WindowFeatures({Window.FEATURE_ACTION_BAR_OVERLAY})
public class HomeActivity extends IckleActivity {
}

####4. Save and Restore Instance State

Use @Stateful to save and restore state without having to use onSaveInstanceState(Bundle) and onRestoreInstanceState(Bundle).

@Layout(R.layout.act_login)
@Title(R.string.ttl_act_login)
public class LoginActivity extends IckleActivity {

    @Stateful
    private int loginAttempts;

    ...
}

####5. Activate Features Selectively

A segregated activation of IckelBot's features is possible by using the concept of profiles on an IckleActivity. A single profile offers a feature such as injection or event handling. To activate a set of profiles use the @Profiles annotation and specify the profiles to be activated.

@Profiles({PROFILE.THREADING, PROFILE.EVENT})
public class ContactActivity extends IckleActivity {

    ...
}

In the above example, other features such as dependency injection will fail.