说明：Android dynamic loading layout, according to the different buttons on the Android interface to load a different page layout, the principle is very simple actually, here is a brief description: by using the LayoutInflater each time you click the button to read the layout file, and then find the layout file inside of each VIEW after operation VIEW load into the setContentView aspect which we want to put the layout file inside, each must call removeAllViews method, dynamic loading documents to clear before loading in the VIEW.

说明：Android interface menu, support level 2, according to the classification of the prototype is a computer accessories supplies mobile applications use menu, can be classified according to sub menu, for Android applications, the menu is very basic, it is necessary for beginners to learn.

说明：Android percentage loading progress bar in the instance, and an example of using ProgressDialog to create the progress bar, progress bar instance methods, it is simpler, look at the following code: rewrite onCreateDialog method switch (id) {/ / to judge the case id PROGRESS_DIALOG: / / create a progress dialog pd = new ProgressDialog (this);/ / create a progress dialog pd. SetMax (100);/ / set the maximum pd. SetProgressStyle (ProgressDialog. STYLE_HORIZONTAL);Pd. SetTitle (R.s tring. Title);/ / set the title pd. SetCancelable (false);/ / schedule dialog cannot use the back button to close the break;} at the same time we also need to define the method to realize every time the pop-up dialog box callback to dynamically update the dialog content, will progress dialog reset.

说明：This is a common spherical Android progress bar, dynamic wave progress ball effect, the difference is that the progress bar like with water effect of water polo, achieve the effect of fluctuations in listview list, with the change of the loading schedule, water changes, when filled with water, the progress bar is loaded.At the same time show the percentage, the remaining schedule.This progress bar effect everybody is in the android smartphone app store to see, when the download begins, visible to the progress of the ball in the download list.

说明：A practical Android memory monitoring floating window, can be used to monitor an application or display monitor information, the source of the floating window is used to monitor memory window, display monitor to some of the information, functional description: 1. The user can be arbitrary drag floating window, custom, and can be arbitrary adjust window 2 senior colonel real-time display the current memory information 3. The upper data representation available memory value.4. The lower data represents the total memory value.5. Click on the floating window appears close small ICONS can be directly.

说明：Custom Android ListView drop-down refresh instance, CustomListView source demo package, Android dropdown refreshes the instance of the custom, source code, complete with a set of resource file, have a friend APK running environment can copy on test, or directly within the Android run to see the effect.

说明：Android through a custom View to implement the parsing lyrics LRC England and synchronous rolling, drag, scaling up and down the lyrics of function, concrete implement the following functions: 1, can realize the function of lyrics synchronous rolling, namely the songs which sentence to the lyrics, they highlight shows there is the lyrics.

说明：An example of Android XML layout, mainly the use of XML file for layout, is used in the RelativeLayout.Specific in this case: Africa map: use the FrameLayout use;ActivityMain linerLayout is demonstrated.Personalized form ActivityLayout demonstrates the combination of the RelativeLayout and linerLayout.ActivityRelativeLayout demonstrates a single RelativeLayout.Neat form: demonstrates the use of the TableLayout.