【harmonyOS】如果有些图片url用Image组件加载不显示，可以request下载后利用PixelMap加载。

需要网络权限：src/main/module.json5

    "requestPermissions" : [       {         "name" : "ohos.permission.INTERNET"       } ,

import { http } from '@kit.NetworkKit' import { image } from '@kit.ImageKit' @Entry @Component struct Page010 {  @State pixelMap : PixelMap | undefined = undefined  @State imgUrl : string = 'https://img0.baidu.com/it/u=3129379276,3231297819&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=500'   build ( ) {     Column ( ) {       Text ( '加载url显示' )       Image ( this . imgUrl ) . width ( '200lpx' ) . height ( '200lpx' )         . onError ( ( error : ImageError ) => {          console . info ( 'error' , JSON . stringify ( error ) )         } )         . onComplete ( ( event ) => {          console . info ( 'event' , JSON . stringify ( event ) )         } )       Button ( '下载图片' ) . onClick ( ( ) => {        http . createHttp ( ) . request (           this . imgUrl ,           { expectDataType : http . HttpDataType . ARRAY_BUFFER }         ) . then ( async ( res ) => {          console . info ( 'res' , JSON . stringify ( res ) )           // 将图片资源转为像素图（PixelMap）           this . pixelMap = await image . createImageSource ( res . result as ArrayBuffer ) . createPixelMap ( )         } ) . catch ( ( ) => {          console . info ( 'catch' )         } )       } )       Text ( '下载图片后显示' )       Image ( this . pixelMap ) . width ( '200lpx' )     }     . width ( '100%' )     . height ( '100%' )   } }