使用同步，保证图片获取成功

yvan.ni
1 parent ae62962a
Showing 1 changed file with 47 additions and 33 deletions
packageA/pages/liveStreamDetails/liveStreamDetails.js
@@ -9,6 +9,7 @@ var t = require(&quot;../../../utils/util.js&quot;),
   oo = s.globalData,
   o = s.globalData.setting,
   os = o;
+var regeneratorRuntime = require('../../../utils/runtime.js');
 const app = getApp();
@@ -148,15 +149,59 @@ drawText: function(ctx, str, leftWidth, initHeight, titleHeight, canvasWidth, un
 },
    // 生成海报
-  drawPlaybill: function () {
+  drawPlaybill: async function () {
+
+    var that=this;
     // wx.showLoading({
     //   title: '正在生成海报...'
     // });
+
+
+    if(!this.data.coverImg) {
+
+      // 请求主图
+      await that.getImageInfo(that.data.details['share_img']).then(res => {
+        that.setData({
+          coverImg: res.path,
+          coverImgWidth: res.width,
+          coverImgHeight: res.height,
+          coverImgSize: that.imageResize(res.width, res.height),
+          // coverImgHeight: res.height,
+        });
+        // console.log('主图加载成功~', that.data.coverImgSize);
+      });
+    }
+
+    if(!this.data.avatarUrl) {
+
+      // 请求头像
+      await that.getImageInfo(app.globalData.userInfo['head_pic']).then(res => {
+        that.setData({
+          avatarUrl: res.path
+        });
+        console.log('头像加载成功~')
+      });
+    }
+
+    // 请求二维码
+    var path3 = os.url + "/api/wx/open/app/user/getWeAppEwm/" +
+        os.stoid + "?sceneValue=1012" + "&pageValue=pages/goods/goodsInfo/goodsInfo";
+
+    if(!this.data.ewm) {
+
+      await that.getImageInfo(path3).then(res => {
+        that.setData({
+          ewm: res.path
+        });
+        console.log('二维码加载成功~')
+      });
+    }
+
+
     // 数据准备
     const title = this.data.details.name;
     // const headImg = app.globalData.userInfo['head_pic'];
-    const that = this;
     // console.log('----------------v', headImg);
@@ -479,37 +524,6 @@ drawText: function(ctx, str, leftWidth, initHeight, titleHeight, canvasWidth, un
 		  }
-          
-          // 请求主图
-          that.getImageInfo(that.data.details['share_img']).then(res => {
-            that.setData({
-              coverImg: res.path,
-							coverImgWidth: res.width,
-							coverImgHeight: res.height,
-							coverImgSize: that.imageResize(res.width, res.height),
-							// coverImgHeight: res.height,
-            });
-            // console.log('主图加载成功~', that.data.coverImgSize);
-          });
-
-          // 请求头像
-          that.getImageInfo(app.globalData.userInfo['head_pic']).then(res => {
-            that.setData({
-              avatarUrl: res.path
-            });
-            console.log('头像加载成功~')
-          });
-
-          // 请求二维码
-          var path3 = os.url + "/api/wx/open/app/user/getWeAppEwm/" +
-      os.stoid + "?sceneValue=1012" + "&pageValue=pages/goods/goodsInfo/goodsInfo";
-          that.getImageInfo(path3).then(res => {
-            that.setData({
-              ewm: res.path
-            });
-            console.log('二维码加载成功~')
-          });
-
         }
     })