Android Fragmentation Management How-to by Gianluca Pacchiella

By Gianluca Pacchiella

Study whatever new straight away! a quick, speedy, concentrated advisor supplying quick effects. easy methods to write apps that paintings on any Android model able to use code to resolve any compatibility factor Get hands-on with the most important factor that faces Android builders.

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Define a Fragment that will display the desired data. LoaderCallbacks { } 4. simple_list_item_1, new String[]{} ) ); /* * Differently to what the documentation says, * append forceLoad() otherwise the Loader will not be called. info Instant Android Fragmentation Management How-to 5. Now, it's time to implement the methods defined in the LoaderManager. simple_list_item_1, data ) ); } 6. Finally, define the Loader subclass (there are two functions, doGet() and getNews(), that will not be shown here; they simply retrieve the XML and manage to transform it into an array of strings).

In the preceding example, the list is updated with the array containing news built on loadInBackground(). There's more... Now let's talk about some other options, or possibly some pieces of general information that are relevant to this task. Low level Under the hood, an Android application is not a unique block of instructions executed one after the other, but is composed of multiple pipelines of execution. The main concepts here are the process and thread. When an application is started, the operating system creates a process (technically a Linux process) and each component is associated to this process.

Context_menu, menu); return true; } // Called each time the action mode is shown. Always called after onCreateActionMode, but // may be called multiple times if the mode is invalidated. finish(); // Action picked, so close the CAB return true; default: return false; } } // Called when the user exits the action mode @Override public void onDestroyActionMode(ActionMode mode) { } }; 3. setSelected(true); } }); 4. com/apk/res/android">

The following screenshot shows how the contextual menu will appear: Remember that the OK button (the button at the very left of the bar) simply dismisses the contextual action bar and the system adds it for you.

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