Android_Loader/Animator
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日历系统中使用了CursorLoader;
CursorLoader --> AsyncTaskLoader --> Loader --> Object; A loader that queries the ContentResolver and returns a Cursor. This class implements the Loader protocol in a standard way for querying cursors, building on AsyncTaskLoader to perform the cursor query on a background thread so that it does not block the application's UI.
LoaderManager --> Object; Interface associated with an Activity or Fragment for managing one or more Loader instances associated with it. This helps an application manage longer-running operations in conjunction with the Activity or Fragment lifecycle; the most common use of this is with a CursorLoader, however applications are free to write their own loaders for loading other types of data.
ImageManager --> Object; This class is used to load images from the network and handles local caching for you.
ImageManager.OnImageLoadedListener -- Object; Listener interface for handling when the image for a particular URI has been loaded.
Flip:
AnimatorListenerAdapter实现Animator.AnimatorListener接口;
GridView的动画:
mGridLayout.addView(**);
Animator mAnim=mLayoutTransition.getAnimator(***);
mLayoutTransition.setAnimator(***);
通过uri,增/删/改/查都可以。
CursorLoader --> AsyncTaskLoader<D> --> Loader<D> -->Object. A loader that queries the ContentResolver and returns a Cursor.
只是查询。包括条件/字段 等查询。
LoaderManager --> Object. Interface associated with an Activity or Fragment for managing one or more Loader instances associated with it. This helps an application manage longer-running operations in conjunction with the Activity or Fragment lifecycle; the most common use of this is with a CursorLoader, however applications are free to write their own loaders for loading other types of data.
AsynQueryHandler:Handler实现线程间数据传递。
CursorLoader: Cursor对象进行线程间数据传递。
AsynQueryHandler 和 CursorLoader都是调用mContentResolver.query()进行查询数据的。
Cursor是一个随机的数据源。所有的数据都是通过下标取得。
Cursor接口: This interface provides random read-write access to the result set returned by a database query.
VideoView --> SurfaceView --> View --> Object.
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