Question

我正在使用ionic3本机裁剪图像插件，它工作并具有src图像路径，但我需要将其更改为base64字符串以将其发送到服务器。如何更改它，这是我的裁剪图像代码，非常感谢。

        console.log('buttonCamera clicked');
        let cameraOptions = {
          sourceType: this.camera.PictureSourceType.CAMERA,
          destinationType: this.camera.DestinationType.FILE_URI,      
          quality: 100,
          targetWidth: 500,
          targetHeight: 500,
          encodingType: this.camera.EncodingType.JPEG,      
          correctOrientation: true
        }

        this.camera.getPicture(cameraOptions)
        .then(file_uri => {
           this.crop.crop(file_uri, {quality: 100})
           .then(
              newImage => {console.log('new image path is: ' + newImage);
              this.imageSrc = newImage},
              error => console.error('Error cropping image', error)
           );
        },
        err => console.log(err));

Answer 1

只需在cameraOption上进行少量更改即可：

sudo apt install apache2 libapache2-mod-php7.2
sudo a2dismod php7.0
sudo a2enmod php7.2
sudo service apache2 restart

就完成了！

Answer 2

在 Ionic 4 中，使用 file 本机插件调用 readAsDataURL

  showCroppedImage(ImagePath){
    this.isLoading = true;
    var copyPath = ImagePath;
    var splitPath = copyPath.split('/');
    var imageName = splitPath[splitPath.length-1];
    var filePath = ImagePath.split(imageName)[0];

    this.file.readAsDataURL(filePath,imageName).then(base64=>{
        this.croppedImagepath = base64;
        this.isLoading = false;
    },error=>{
      alert('Error in showing image' + error);
      this.isLoading = false;
    });
  }

查看完整的教程here

ionic3将裁剪后的图像更改为base64字符串

2 个答案: