<template>
  	<view>
  		<page-head :title="title"></page-head>
  		<view class="uni-padding-wrap uni-common-mt">
  			<view class="uni-btn-v">
  				<button type="primary" @tap="getOrient">获取设备的方向信息</button>
  				<button type="primary" @tap="watchOrient">监听设备的方向变化</button>
  				<button type="primary" @tap="watchStop">停止监听</button>
  			</view>
  			<view class="uni-textarea">
  				<textarea :value="value" />
  			</view>
  		</view>
  	</view>
  </template>
  <script>
  	var id = null
  	export default {
  		data() {
  			return {
  				title: 'orientation',
  				value: ''
  			}
  		},
  		methods: {
  			getOrient: function () {
  				var that = this;
  				plus.orientation.getCurrentOrientation(function (o) {
  					that.value = "alpha：" + o.alpha + "
  beta：" + o.beta + "
  gamma：" + o.gamma;
  				}, function (e) {
  					console.log("获取失败:" + e.message);
  				});
  			},
  			watchOrient: function () {
  				var that = this;
  				if (id) {
  					return;
  				}
  				id = plus.orientation.watchOrientation(function (o) {
  					that.value = "监听设备方向变化信息
  " + "alpha：" + o.alpha + "
  beta：" + o.beta + "
  gamma：" + o.gamma;
  				}, function (e) {
  					plus.orientation.clearWatch(id);
  					id = null;
  					console.log("监听失败:" + e.message);
  				});
  			},
  			watchStop: function () {
  				if (id) {
  					plus.orientation.clearWatch(id);
  					id = null;
  				} else {
  					console.log("没有监听设备方向变化");
  				}
  			}
  		}
  	}
  </script>
  
  <style>
  	
  </style>