uniapp截屏保存图片

uniapp截屏保存图片

    capture() {  
       var pages = getCurrentPages();  
       var page = pages[pages.length - 1];  
      console.log("当前页"+pages.length-1);
       var bitmap=null;  
       var currentWebview = page.$getAppWebview();
       bitmap = new plus.nativeObj.Bitmap('amway_img');  
       // 将webview内容绘制到Bitmap对象中  
       currentWebview.draw(bitmap,function(){  
           console.log('截屏绘制图片成功');  
           bitmap.save( "_doc/a.jpg"  
           ,{}  
           ,function(i){  
               console.log('保存图片成功：'+JSON.stringify(i));  
               uni.saveImageToPhotosAlbum({  
                   filePath: i.target,  
                   success: function () {  
                       bitmap.clear(); //销毁Bitmap图片  
                       uni.showToast({  
                           title: '保存图片成功',  
                           mask: false,  
                           duration: 1500  
                       });  
                   }  
               });  
           }  
           ,function(e){  
               console.log('保存图片失败：'+JSON.stringify(e));  
           });  
       },function(e){  
           console.log('截屏绘制图片失败：'+JSON.stringify(e));  
       });  
       //currentWebview.append(amway_bit);    
   }