Android Fragmentation Management How-to by Gianluca Pacchiella PDF

By Gianluca Pacchiella

ISBN-10: 1782160868

ISBN-13: 9781782160861

Study whatever new immediately! a quick, quickly, concentrated advisor supplying instant effects. tips on how to write apps that paintings on any Android model able to use code to resolve any compatibility factor Get hands-on with the largest factor that faces Android builders.

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Java. Obviously, we are not going to implement all the things that you can find there. So let's implement our custom Loader: 1. Observable; 2. Define our custom loader, extending the Loader class and indicating the implementation of the Observer interface: class RSSLowLevelLoader extends Loader implements Observer { … } 3. Define the internal variables that will reference the Task and Observable instances: private Task mTask = null; private RSSObservable mTimerObservable = null; 4. Define the constructor where we initialize all the things needed for the class to work correctly.

OnContentChanged(); } 9. cancel(); } } The more cumbersome part is understanding the underlying flow of the Loader. First of all, there are three states in which it can exist. Those are as follows: ff STARTED: Loaders execute their loads and notify the Activity class using onLoadFinished(). ff STOPPED: Loaders continue to monitor for changes, but must not deliver results. This state is induced by calling stopLoading() from LoaderManager when the related Activity/Fragment class is being stopped.

Observable; 2. Define our custom loader, extending the Loader class and indicating the implementation of the Observer interface: class RSSLowLevelLoader extends Loader implements Observer { … } 3. Define the internal variables that will reference the Task and Observable instances: private Task mTask = null; private RSSObservable mTimerObservable = null; 4. Define the constructor where we initialize all the things needed for the class to work correctly. /* * Don't retain a reference to the context in the class since this * will / can cause a memory leak.

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Android Fragmentation Management How-to by Gianluca Pacchiella


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