为什么收藏后推出再回到页面就又变成没有收藏的状态了，但调试里storage的值还是true。

Answer 1

7七月 2017-04-07 21:28:09

初始化页面的时候没有正确读取storage的值或者读取到了没有设置

• 提问者 烟火兮 #1

  非常感谢！

• SherLock_chris #2

  那请问要怎么解决，收藏后退出，然后再进入会变成false

• SherLock_chris #3

  var postsCollected = wx.setStorageSync('posts_collected');
      if(postsCollected){
        var postCollected = postsCollected[postId];
        this.setData({
          collected: postCollected
        });
      }
      else{
        var postsCollected = {};
        postsCollected[postId] = false;
        wx.setStorageSync('posts_collected', postsCollected);
      }
      
    },
  
    onColletionTap:function(event){
      var postsCollected = wx.getStorageSync('posts_collected');
      var postCollected = postsCollected[this.data.currentPostId];
      //收藏变成未收藏，未收藏变成收藏
      postCollected = !postCollected;
      postsCollected[this.data.currentPostId] = postCollected;
      //更新文章是否收藏的缓存值
      wx.setStorageSync('posts_collected', postsCollected);
      //更新数据绑定变量,从而实现切换图片
      this.setData({
        collected:postCollected
      })
    }

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