MUI 5+APP 進入後臺，不關閉APP

前臺切換到後臺 

mui.plusReady(function() {
	if (plus.os.name.toUpperCase() == "ANDROID") {
    //方式一
    var main=plus.android.runtimeMainActivity();
	mui.back=function(){
		main && main.moveTaskToBack(false);
	}

    //方式二
	//mui.back=function(){
	//	plus.android.runtimeMainActivity().moveTaskToBack(false);
	//}
    }
})

後臺切換到前臺

var main = plus.android.runtimeMainActivity();
var activityManager = main.getSystemService(main.ACTIVITY_SERVICE);
plus.android.importClass(activityManager);
activityManager.moveTaskToFront(main.getTaskId(), 0);

參考文獻

https://ask.dcloud.net.cn/question/74932

http://www.03cm.com/news/287199/2555481.html

https://ask.dcloud.net.cn/question/54884

http://www.bcty365.com/content-146-3338-1.html