Android官方API文档完整版, 内容参考： onBind public final IBinder onBind(Intent intent)从类 Service 复制的描述 Return the communication channel to the service. May return null if clients can not bind to the service. The returned IBinder is usually for a complex interface that has been described using aidl. Note that unlike other application components, calls on to the IBinder interface returned here may not happen on the main thread of the process. More information about this can be found in Application Fundamentals: Processes and Threads. 指定者： 类 Service 中的 onBind 参数： intent - The Intent that was used to bind to this service, as given to Context.bindService. Note that any extras that were included with the Intent at that point will not be seen here. 返回： Return an IBinder through which clients can call on to the service.

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完整版Android官方文档，可能没有更新到最新的sdk的一些API但是也是基本全了，一切只为方便大家

Android官方API文档完整版、中文版帮助文档 android.widget 类 CheckBox java.lang.Object 继承者 android.view.View 继承者 android.widget.TextView 继承者 android.widget.Button 继承者 android.widget.Com poundButton 继承者 android.widget.CheckBox 所有已实现的接口： Drawable.Callback, KeyEvent.Callback, ViewTreeObserver.OnPreDrawListener, Checkable

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