watch

fun watch(activity: Activity?, runnable: Runnable?, handler: Handler? = mainThreadHandler)

监控并处理handler的runnable 当activity销毁的时候，从handler中移除runnable待执行任务

fun watch(fragment: Fragment?, runnable: Runnable?, handler: Handler? = mainThreadHandler)

监控并处理 handler 的 runnable 当 Fragment 销毁的时候，从 handler 中移除 runnable 待执行任务