HarmonyOS H5如何访问相册？

HarmonyOS

FengTianYa

2024-11-05 10:39:14

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此demo用于当web组件加载一个h5页面时，用与h5页面用input标签调用手机相册以及系统相机。

注入JavaScript对象到window对象中，并在window对象中调用该对象的方法。注册后，须调用refresh接口生效。

注册对象的名称，与window中调用的对象名一致。注册后window对象可以通过此名字访问应用侧JavaScript对象。

import business_error from '@ohos.base'; 
import picker from '@ohos.file.picker'; 
import { BusinessError } from '@ohos.base'; 
import common from '@ohos.app.ability.common'; 
import web_webview from '@ohos.web.webview'; 
 
class pickImage { 
  constructor() { 
  } 
 
  testPickImage(): string { 
    try { 
 
      let PhotoSelectOptions = new picker.PhotoSelectOptions(); 
      PhotoSelectOptions.MIMEType = picker.PhotoViewMIMETypes.IMAGE_TYPE; 
      PhotoSelectOptions.maxSelectNumber = 5; 
      let photoPicker = new picker.PhotoViewPicker(); 
      photoPicker.select(PhotoSelectOptions).then((PhotoSelectResult: picker.PhotoSelectResult) => { 
        console.info('PhotoViewPicker.select successfully, PhotoSelectResult uri: ' + JSON.stringify(PhotoSelectResult)); 
      }).catch((err: BusinessError) => { 
        console.error('PhotoViewPicker.select failed with err: ' + JSON.stringify(err)); 
      }); 
    } catch (error) { 
      let err: BusinessError = error as BusinessError; 
      console.error('PhotoViewPicker failed with err: ' + JSON.stringify(err)); 
    } 
    return '121'; 
 
  } 
 
} 
 
class cameraImage { 
  constructor() { 
  } 
 
  testCameraImage(): string { 
    const context = getContext(this) as common.UIAbilityContext 
    context.startAbilityForResult({ 
      action:"ohos.want.action.imageCapture", 
      parameters:{ 
        callBundleName:"com.hm.imageshow" 
      } 
    },(err,data) => { 
      console.info("imageCapture:" + `${JSON.stringify(data)}`) 
    }) 
    return '1221'; 
  } 
 
} 
 
@Entry 
@Component 
struct photo { 
  controller: web_webview.WebviewController = new web_webview.WebviewController(); 
  @State webPickImage: pickImage = new pickImage(); 
  @State webCameraImage: cameraImage = new cameraImage(); 
 
  aboutToAppear(){ 
    // 配置Web开启调试模式 
    web_webview.WebviewController.setWebDebuggingAccess(true); 
  } 
 
  build() { 
    Column() { 
      Button('refresh') 
        .onClick(() => { 
          try { 
            this.controller.refresh(); 
          } catch (error) { 
            let e: business_error.BusinessError = error as business_error.BusinessError; 
            console.error(`ErrorCode: ${e.code},  Message: ${e.message}`); 
          } 
        }) 
      Button('Register JavaScript To Window') 
        .onClick(() => { 
          try { 
            this.controller.registerJavaScriptProxy(this.webPickImage, "pickImageName", ["testPickImage"]); 
            this.controller.registerJavaScriptProxy(this.webCameraImage, "cameraImageName", ["testCameraImage"]); 
          } catch (error) { 
            let e: business_error.BusinessError = error as business_error.BusinessError; 
            console.error(`ErrorCode: ${e.code},  Message: ${e.message}`); 
          } 
        }) 
      Web({ src: $rawfile('Test1128.html'), controller: this.controller }) 
        .javaScriptAccess(true) 
    } 
  } 
}

html:

<!DOCTYPE html> 
  <html> 
  <body> 
  <button type="button" onclick="pickImage()">唤起图库</button> 
  <button type="button" onclick="cameraImage()">唤起照相机</button> 
  <p id="demo"></p> 
  <script> 
  function pickImage() { 
    let str=pickImageName.testPickImage(); 
  } 
function cameraImage(){ 
  let str2=cameraImageName.testCameraImage(); 
} 
</script> 
  </body> 
  </html>

2024-11-05 16:33:19

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