I set the background color of the outer div to blue but it is not displayed. Why?
A demo of it:
.question-template {
width: auto;
height: auto;
background-color: blue;
}
.question {
float: left;
margin: 10px;
}
.participants {
background-color: green;
float: left;
margin: 10px;
}<body>
<div class="question-template">
<div class="participants">234</div>
<div class="question">Some lorem ipsum text</div>
</div>
</body>当我尝试使用问题类时,我收到以下错误:
Fatal error: Class 'database' not found in path/problem.php on line 25
我不明白为什么我得到这个错误,在problem.php的顶部我需要database.php.怎么了？
problem.php
<?php
require("common.php");
require("database.php");
...
?>
为database.php
<?php
class database
{
...
}
?>
我正在研究更多的迷你项目,后来将其纳入一个新项目.它基本上是一个测试单元.
我正在做的是创建一个AVCaptureSession然后创建一个方法OutputSampleBufferDelegate.在方法中,我将转换sampleBuffer为a UIImage并保存UIImage.当我在iPhone 4上运行应用程序时,它每秒只能保存2-3张图像.必须有一种更有效的方法来保存图像.
有人可以帮助我加快速度吗？
谢谢!
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection
{
UIImage *resultUIImage = [self imageFromSampleBuffer:sampleBuffer];
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(resultUIImage)];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
CMTime frameTime = CMSampleBufferGetPresentationTimeStamp(sampleBuffer);
NSString *filename = [NSString stringWithFormat:@"%f.png", CMTimeGetSeconds(frameTime)];
NSString *finalPath = [path stringByAppendingString:filename];
[imageData writeToFile:finalPath atomically:YES];
}
// Create a UIImage from sample buffer data
- (UIImage *)imageFromSampleBuffer:(CMSampleBufferRef)sampleBuffer
{
// Get a CMSampleBuffer's Core …编辑:这是一个最小的可行项目
我正在尝试从服务器端流程的授权代码中获取Google的访问权限和刷新令牌.我在此处按照Google指南操作:https://developers.google.com/identity/sign-in/web/server-side-flow.
我使用的是护照和护照-google-authcode.
以下是节点应用的路由:
router.get('/auth/google_auth_code',
passport.authenticate('google_authcode', {
scope:
[
'https://www.googleapis.com/auth/calendar',
'profile',
'https://www.googleapis.com/auth/userinfo.email'
]
}),
function () {
res.end();
})
router.get('/auth/google_auth_code/callback',
passport.authenticate('google_authcode', {
failureRedirect: '/error'
}),
function (req, res) {
// do something with req.user
res.send('hello');
}
);
这是此策略的护照配置.
passport.use('google_authcode', new GoogleAuthCodeStrategy({
clientID: 'my client id',
clientSecret: 'my secret',
callbackURL: '/auth/google_auth_code/callback',
// passReqToCallback: true
},
function (accessToken, refreshToken, rawResponse, profile, done) {
// unable to get here
}
));
发出身份验证请求时,Google会响应以下错误:
{
"error" : …我正在尝试创建一个AVCaptureSession.我的代码基于WWDC 2011视频,编号419.
我有以下行与WWDC 2011视频中的代码完全相同,它也与此处的代码相同http://www.bardecode.com/en/knowledge-base/214-detailed-description-of-work -around换avcapturevideopreviewlayer-问题在-IOS-41.html
// Create a device input with the device and add it to the session.
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device
error:&error];
但Xcode表示&错误是使用未声明的标识符.
我每次加载以前加载的图像时都会尝试加载新图像.create_photo_list函数可以正常工作.它会创建一个需要加载的照片数组.如果不需要加载则数组为空.问题是,当没有更多项加载时,它会一直调用load_next_photo函数.
我每次在函数中调用registerEventHandler的原因是因为如果不这样做,则在下一张照片加载时不会调用该函数.
function registerEventHandler(node, event, handler) {
if (typeof node.addEventListener == "function")
node.addEventListener(event, handler, false);
else
node.attachEvent("on" + event, handler);
}
// Remove an HTML element event handler such as onclick
// ex: unregisterEventHandler($("textfield"), "keypress", showEvent);
function unregisterEventHandler(node, event, handler) {
if (typeof node.removeEventListener == "function")
node.removeEventListener(event, handler, false);
else
node.detachEvent("on" + event, handler);
}
function load_next_photo() {
var loading_list = create_photo_list();
alert(loading_list.length);
if (loading_list.length > 0) {
img[loading_list[0]]['loaded'] = 1;
registerEventHandler($("load_img"), "onload", load_next_photo());
$("load_img").src = img[loading_list[0]]['img'];
}
else { …css ×1
dom ×1
ios ×1
ios4 ×1
javascript ×1
node.js ×1
oauth-2.0 ×1
objective-c ×1
performance ×1
php ×1
video ×1
xcode ×1