移动应用程序是使用angularJs开发的离子1 . 现有应用程序为选定图像生成pdf文件，但需要将图像添加到现有pdf文件 . 图像转换为base64字符串并使用JSPDF生成pdf .
从本地存储中选择图像
$scope.addImages = function (options) {
var options = {
quality: 10,
destinationType: Camera.DestinationType.FILE_URI,
sourceType: Camera.PictureSourceType.PHOTOLIBRARY,
allowEdit: true,
encodingType: Camera.EncodingType.JPEG,
targetWidth: 1024,
targetHeight: 768,
popoverOptions: CameraPopoverOptions
};
$cordovaCamera.getPicture(options).then(function(imageData) {
//Convert image to Base64
function convertImgToBase64(url, callback, outputFormat){
var canvas = document.createElement('CANVAS'),
ctx = canvas.getContext('2d'),
img = new Image;
img.crossOrigin = 'Anonymous';
img.onload = function(){
var dataURL;
canvas.height = img.height;
canvas.width = img.width;
ctx.drawImage(img, 0, 0);
dataURL = canvas.toDataURL(outputFormat);
callback.call(this, dataURL);
canvas = null;
};
img.src = url;
}
$ionicLoading.show({
content: 'Loading..',
animation: 'fade-in',
showBackdrop: true,
maxWidth: 200,
showDelay: 0
});
convertImgToBase64(imageData, function(base64Img){
// Base64DataURL
$scope.images.push(base64Img);
$ionicLoading.hide();
});
}, function(err) {
alert(err);
});
};
用于文件选择的插件
cordova-plugin-custom-filechooser 1.0.1“自定义文件选择器”
customFileChooser.open('application/pdf',function (uri){
alert(uri);
}, function(err){
console.log(err);
});
这给出了.pdf的本地路径URI .
请帮我将图像添加到离子1中的现有pdf中 .