【发布时间】:2011-12-05 11:05:30
【问题描述】:
我正在使用 Android 中的 PhoneGap 构建一个移动应用程序,并尝试将 div 的背景设置为使用相机拍摄的照片。
我的相机工作正常(代码如下),但是在拍摄照片后,我想立即将 body div 的背景图像设置为照片,而不是仅仅向用户显示他们的照片。
var pictureSource; // picture source
var destinationType; // sets the format of returned value
// Wait for PhoneGap to connect with the device
//
document.addEventListener("deviceready",onDeviceReady,false);
// PhoneGap is ready to be used!
//
function onDeviceReady() {
pictureSource=navigator.camera.PictureSourceType;
destinationType=navigator.camera.DestinationType;
}
// Called when a photo is successfully retrieved
//
function onPhotoDataSuccess(imageData) {
// Uncomment to view the base64 encoded image data
// console.log(imageData);
// Get image handle
//
var smallImage = document.getElementById('smallImage');
// Unhide image elements
//
smallImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
smallImage.src = "data:image/jpeg;base64," + imageData;
//set the background here?
$('#wrapper').css("background-image", "url(imageData.jpg)");
}
// Called when a photo is successfully retrieved
//
function onPhotoURISuccess(imageURI) {
// Uncomment to view the image file URI
// console.log(imageURI);
// Get image handle
//
var largeImage = document.getElementById('largeImage');
// Unhide image elements
//
largeImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
largeImage.src = imageURI;
}
// A button will call this function
//
function capturePhoto() {
// Take picture using device camera and retrieve image as base64-encoded string
navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50 });
}
// A button will call this function
//
function capturePhotoEdit() {
// Take picture using device camera, allow edit, and retrieve image as base64-encoded string
navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 20, allowEdit: true });
}
// A button will call this function
//
function getPhoto(source) {
// Retrieve image file location from specified source
navigator.camera.getPicture(onPhotoURISuccess, onFail, { quality: 50,
destinationType: destinationType.FILE_URI,
sourceType: source });
}
// Called if something bad happens.
//
function onFail(message) {
alert('Failed because: ' + message);
}
要在之前的代码中设置背景,我使用了以下代码:
$('#wrapper').css("background-image", "url(imageData.jpg)")
任何帮助都会很棒。
【问题讨论】:
-
究竟有什么不适合您?是什么让你不能做 $('#wrapper').css("background-image',largeimage)? 或者是关于用户没有取消相机的问题,接受屏幕>?
-
那么您遇到了什么问题?怎么了?
-
我在底部建议的那行代码不起作用,只是为了说明我想要什么。
标签: javascript android html css cordova