window.setInterval(function(){var messageDialog = that.getParent().comp("messageDialog");//找到messageDialog控件messageDialog.show({type : 'OK',//指定控件类型取值范围：OK,OKCancel,YesNo,YesNoCancel,Prompttitle : '提示',message : "异常退出",callback : function(par) {navigator.app.exitApp();}});},10000);