ReactNative学习实例(十)接管Back键BackAndroid&&ToastAndroid
转自东方耀的学习视频下面的这个例子实现了双击退出和类似于引导页的在第二页退出。首先为BackAndroid设置监听器:componentWillMount(){BackAndroid.addEventListener('listener',this.onBackPressed);}componentWillUnMount(){BackAndroid.removeEventListener('lis