问题描述
如下图,点击“选择图片”
然后过了约6秒,系统弹出框来,选择图片
其他功能能正常使用。尝试了很多次,每次都要较长时间才能进行图片选择。为什么需要那么长的时间才能选择图片?
以下是我的代码:
HTML
<!DOCTYPE html>
<html ng-app="fileUpload">
<head>
<meta name="renderer" content="webkit|ie-comp|ie-stand">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>AngularJs</title>
<script type="text/javascript" src="js/lib/angular/angular.js"></script>
<script type="text/javascript" src="js/lib/angular/ng-file-upload.min.js"></script>
<script type="text/javascript" src="js/lib/angular/ng-file-upload-shim.min.js"></script>
<script type="text/javascript" src="js/lib/angular/ng-img-crop.js"></script>
</head>
<body ng-app="fileUpload" ng-controller="MyCtrl">
<form name="myForm">
<p>Crop Image and Upload</p>
<button ngf-select ng-model="picFile" accept="image/*">Select Picture</button>
<p ngf-drop ng-model="picFile" ngf-pattern="image/*" class="cropArea">
<img-crop image="picFile | ngfDataUrl" result-image="croppedDataUrl" ng-init="croppedDataUrl=''"></img-crop>
</p>
<p><img ng-src="{{croppedDataUrl}}" /></p>
<button ng-click="upload(croppedDataUrl, picFile.name)">Submit</button>
<span class="progress" ng-show="progress >= 0">
<p style="width:{{progress}}%" ng-bind="progress + '%'"></p>
</span>
<span ng-show="result">Upload Successful</span>
<span class="err" ng-show="errorMsg">{{errorMsg}}</span>
</form>
</body>
</html>
javascript
<script type="text/javascript">
var app = angular.module('fileUpload', ['ngFileUpload', 'ngImgCrop']);
app.controller('MyCtrl', ['$scope', 'Upload', '$timeout', function ($scope, Upload, $timeout) {
$scope.upload = function (dataUrl, name) {
Upload.upload({
url: 'https://angular-file-upload-cors-srv.appspot.com/upload',
data: {
file: Upload.dataUrltoBlob(dataUrl, name)
},
}).then(function (response) {
$timeout(function () {
$scope.result = response.data;
});
}, function (response) {
if (response.status > 0) $scope.errorMsg = response.status
+ ': ' + response.data;
}, function (evt) {
$scope.progress = parseInt(100.0 * evt.loaded / evt.total);
});
}
}]);
</script>
CSS
<style type="text/css">
.cropArea {background: #E4E4E4; overflow: hidden; width:500px; height:350px; }
form .progress {line-height: 15px; }
.progress {display: inline-block; width: 100px; border: 3px groove #CCC; }
.progress p {font-size: smaller; background: orange; width: 0; }
img-crop {width: 100%; height: 100%; display: block; position: relative; overflow: hidden; }
img-crop canvas {display: block; position: absolute; top: 50%; left: 50%; outline: none; -webkit-tap-highlight-color: rgba(255, 255, 255, 0);}
</style>
【参考】
上面的代码来自:http://jsfiddle.net/danialfar...
ng-file-upload介绍:https://github.com/danialfari...
アップロードファイルの種類が設定されていないことが原因である可能性があります。私も以前にこの問題を抱えていました。
accept: 'image/jpg,image/jpeg,image/png'
に変更するだけで大丈夫です。accept
会在计算机中进行过滤,所有打开很慢。换成ngf-pattern
过滤,如何不符合ngf-pattern="image/*
的话,返回值是null
, はアップロードしたファイルではありません。