Drawing a UI is only one part of creating a custom view. You also need to make your view respond to user input in a way that closely resembles the real-world action you're mimicking. Objects should always act in the same way that real objects do.
在Android4.0(API leverl 14)中使用ActionProvider能夠更容易的實現一個在ActionBar中的方便使用和高效的共用Action。一旦一個ActionProvider附加到ShareActionProvider菜單中,你只需要提供一個共用的Intent就可以,剩下的其他工作由它來完成。注意一點:ActionProvider只能用在API lever 14及以後的版本中。
今天自訂了一個AlertDialog對話方塊,第一次點擊時正常,但第二次調用時會出現錯誤:java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 出錯的代碼為:[java] //視窗構造器 synchronized protected
Now that you have two implementations of TabHelper and CompatTab—one for Android 3.0 and later and one for earlier versions of the platform—it's time to do something with these implementations. This lesson discusses creating the
在4.0的圓環滑動解鎖中,我們點擊下去的時候會有震動效果,因為這個空間設定的震動效果沒有綁定設定中設定的觸摸震動開關來取消震動效果,所以如果我們需要根據設定中的觸摸震動開關來開啟和取消滑動解鎖的震動效果,就需要做以下修改了。 在LockScreen.java類中的LockScreen方法中的else if (mUnlockWidget instanceof
You create a CursorLoader within a loader framework. To set up the framework, you implement theLoaderCallbacks<Cursor> as part of an Activity. In addition, to provide compatibility compatible with platform versions starting with Android 1.6,