ionic-framework - ionic native camera.getPicture(options) 总是返回一个字符串

Question

我正在使用 @ionic-native/camera 中的 getPicture 函数来获取图像的文件 URI。我有cordova相机插件，所有的包都更新了。根据documentation默认目标类型选项是 File_URI。但是，即使我将默认目标类型明确指定为 File_URI 的选项，它也会返回一个 base64 字符串。

下面给出了源代码，我错过了什么吗？任何帮助表示赞赏。

import { Camera, CameraOptions } from '@ionic-native/camera';

    openGallery(){
    const options: CameraOptions = {
      quality: 100,
      destinationType: this.camera.DestinationType.FILE_URI,
      sourceType: this.camera.PictureSourceType.PHOTOLIBRARY
    }

    this.camera.getPicture(options).then((imageURI) => {
     // imageData is either a base64 encoded string or a file URI
     // If it's base64 (DATA_URL):

     this.image_loc = imageURI;

     console.log("The image location is as follows: " + this.image_loc);

    }, (err) => {
     // Handle error
    }); 
}

控制台输出:

Answer 1

尝试这个

 base64Image:any;

      optionsCamera: CameraOptions = {
        quality: 100,
        destinationType: this.camera.DestinationType.FILE_URI,
        encodingType: this.camera.EncodingType.PNG,
        cameraDirection: this.camera.Direction.BACK,
        targetHeight:400,
        targetWidth: 400,
        correctOrientation: true,
        allowEdit: true

      }


    this.camera.getPicture(options).then((imageData) => {

          this.base64Image = imageData; 
          this.convertToUrl(imageData);

        }, (err) => {
          // console.log(err);

        });


    convertToUrl(newImage){
        function toDataURL(ctx, callback) {
          var url = ctx.base64Image;

          var xhr = new XMLHttpRequest();
          xhr.onload = function() {
            var reader = new FileReader();
            reader.onloadend = function() {
              ctx.base64Image = reader.result;
              callback(reader.result);       
            }
            reader.readAsDataURL(xhr.response);

          };
          xhr.open('GET', url);
          xhr.responseType = 'blob';
          xhr.send();
        }

        toDataURL(this, function(dataUrl) {
         console.log(dataUrl)
        })


      }