html5plus 从相册选择图片后获取图片的大小

plus.gallery.pick(function (filePath) {
	plus.io.resolveLocalFileSystemURL(filePath, function (entry) {
		console.log('resolveLocalFileSystemURL success')
		entry.getMetadata(function (metaData) {
			console.log('getMetadata success')
			console.log(metaData.size)
		}, function () {
			console.error('getMetadata fail');
		});
	}, function () {
		console.error('resolveLocalFileSystemURL fail')
	});
});