saveimg: function() {var that = this;wx.showLoading({title: '保存中',})wx.downloadFile({url: that.data.haibaoimg,success: function(res) {var imgpath = res.tempFilePath;if (res.statusCode == 200) {wx.getSetting({success(res) {//第一次進(jìn)來res.authSetting['scope.writePhotosAlbum']為undefined if (res.authSetting['scope.writePhotosAlbum'] != undefined && res.authSetting['scope.writePhotosAlbum'] == false) {//顯示自定義彈框，第一次進(jìn)來不顯示自定義that.setData({userauth: true});wx.hideLoading();} else {wx.saveImageToPhotosAlbum({filePath: imgpath,success: function(res) {wx.hideLoading();wx.showToast({title: '保存成功！'})},fail: function(res) {wx.hideLoading();wx.showToast({title: '保存失敗！'})}})}}})}}})},

自定義彈框：

<view class="userauth" wx:if="{{userauth}}"><view class="auth_content"><view class="authtitle">提示</view><view class="authtext">允許保存圖片或視頻到你的相冊(cè)？</view><view class="authfooter"><view bindtap="closeauth">取消</view><view>/*利用button調(diào)用設(shè)置*/<button plain="{{true}}" hover-class="none" open-type='openSetting' bindopensetting="getseetting">確定</button></view></view></view></view>

監(jiān)聽打開設(shè)置用戶是否打開了授權(quán)

getseetting: function(res) {if (res.detail.authSetting['scope.writePhotosAlbum'] == true) {this.saveimg();} else {wx.showToast({title: '保存到相冊(cè)授權(quán)未打開！',icon: 'none'})}this.setData({userauth: false});},

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總結(jié)

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