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Using PhoneGap, How to get base64 image data of a photo selected from the iPhone photo library

Using PhoneGap (Cordova), I am trying to get base64 image data of a photo selected from a photo library.

I could do it ... when the photo is taken from the camera, with the code snippet below in Cordoba.

    navigator.camera.getPicture(onSuccess, onFail, { quality: 50,
    destinationType: Camera.DestinationType.DATA_URL
 }); 

function onSuccess(imageData) {
    var image = document.getElementById('myImage');
    image.src = "data:image/jpeg;base64," + imageData;
}

function onFail(message) {
    alert('Failed because: ' + message);
}

But what should I do to get base64 image data when the photo is selected from the library?

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6 answers
function encodeImageUri(imageUri)
{
     var c=document.createElement('canvas');
     var ctx=c.getContext("2d");
     var img=new Image();
     img.onload = function(){
       c.width=this.width;
       c.height=this.height;
       ctx.drawImage(img, 0,0);
     };
     img.src=imageUri;
     var dataURL = c.toDataURL("image/jpeg");
     return dataURL;
}

PhoneGap . , base64 , . toDataUrl() : -)

+12

, :

navigator.camera.getPicture(onSuccess, onFail, { quality: 50,
    destinationType: Camera.DestinationType.DATA_URL,
    sourceType : Camera.PictureSourceType.PHOTOLIBRARY
});

, 64- . FILE_URI, .

+4

base64, base64, . .

var smallImage = document.getElementById('smallImage');
                smallImage.src = encodeImageUri(imageURI);
+2

, base64, js- iOS, android Android , v.3, Android 3 toDataUrl.

0

.

function getPhoto(source) {
    // Retrieve image file location from specified source
    navigator.camera.getPicture(onPhotoURISuccess, onFail, { quality: 50,
        destinationType: destinationType.FILE_URI,
        sourceType: source });
} 

function onPhotoURISuccess(imageURI) {

    window.resolveLocalFileSystemURI(imageURI, gotFileEntry, failSystem);

}
function onFail(message) {
    alert('Failed because: ' + message);
}
var gotFileEntry = function(fileEntry) {
   // alert(fileEntry.fullPath);
    console.log("got image file entry: " +  fileEntry.fullPath);
//convert all file to base64 formats
    fileEntry.file( function(file) {
//uncomment the code if you need to check image size
       //if(file.size>(1049576/2))
      // {
           //alert('File size exceeds 500kb');
          // return false;
      // }
        var reader = new FileReader();
        reader.onloadend = function(evt) {
            console.log("Read complete!");
            $('yourimageidtoshow').attr('src',  evt.target.result);
        };
        reader.readAsDataURL(file);
    }, failFile);
};
var failSystem=function(){
    console.log('failed');

}
var failFile=function(){

    console.log('failed');
    throw "toobig";
};
0

Try the following: https://github.com/brianvandelden/acato-service-image . It uses the imagePicker.git cordova plugin. With the function of obtaining images from selected images.

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