App.vue

<script>
	export default {
		onLaunch: function() {
			console.log('App Launch')
			//读取本地缓存的设备信息
			uni.getStorage({
				key: 'SystemInfo',
				success(res) {
					if(res.data == null || res.data == undefined || res.data == ''){
						this.getSystemInfo()
					}
				}
			})
		},
		onShow: function() {
			console.log('App Show')
		},
		onHide: function() {
			console.log('App Hide')
		},
		//自定义的获取设备信息的方法
		getSystemInfo: function(){
			//获取设备的信息
			uni.getSystemInfo({
				success(res) {
					console.log(res)
					//保存设备信息
					uni.setStorage({
						key: 'SystemInfo',
						data: res,
						success: function() {
							console.log('保存设备信息成功');
						}
					})
				}
			})
		}
	}
</script>

<style>
	/*每个页面公共css */
</style>