AVPlayer: Background audio stops when home button is pressed, but plays with locked screen
来源： https://stackoverflow.com/questions/11339042/avplayer-background-audio-stops-when-home-button-is-pressed-but-plays-with-loc
ios5
AVPlayer: Background audio stops when home button is pressed, but plays with locked screen
来源： https://stackoverflow.com/questions/11339042/avplayer-background-audio-stops-when-home-button-is-pressed-but-plays-with-loc
AVPlayer: Background audio stops when home button is pressed, but plays with locked screen
来源： https://stackoverflow.com/questions/11339042/avplayer-background-audio-stops-when-home-button-is-pressed-but-plays-with-loc
关于 IOS5 使用 position:fixed 与 scrollTo 共存的 bug
这两天帮某个项目处理后事，本以为可以轻松搞定，不成想又发现了一个bug..... 背景描述： ios5 提出了支持 position:fixed ，于是乎大家觉得让浮动的图层固定在屏幕最下方容易多了，赶紧用上吧。可是呢。。。页面上又有好多地方需要用到 scrollTo 控制滚动条移动，尤其是页面刚加载完毕需要让浏览器默认的 url 栏消失，一般都用 scrollTo(0,0) 或 scrollTo(0,1) 之类的。。。当这两者混合时就出现问题了， 浮动的div 虽然是你看到的在最下方，但是实际上这个div 内的触控点全都漂移了。 （画外音：通过这件事情，我们明白了一个道理：不能只相信你的眼睛....） 用 iphone 访问地址： http://ztree.me/issueTest/iosFixed.html （注意，此 bug 在 iphone5上不存在！应该是 ios6 系统修正了这个bug。 ） 你就可以重现上图的问题，看触屏的位置，那里没有任何内容，但是点击后会看到灰色阴影，点击后 alert 44，这说明 click 44 这个 li 的位置实际上漂移到了那里。 bug 描述： 通过这个 Demo 可以基本确定 bug 的原因——利用 scrollTo 滚屏时，会导致 position:fixed 的图层视图不变，但对应的 DOM 实际响应位置却跟随 滚动条一起移动了
fetchRequestFromTemplateWithName variables
问题 I'm using Xcode 4.2.1 and trying to use a variable. I understand in xcode 4 you need to set the variable with $variable . I have in Xcode for my fetch request the variable as $currDate and my code as NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"YYYYMMdd"]; NSDate *currDate = [NSDate date]; NSString *currDateString = [dateFormatter stringFromDate:currDate]; NSError *error; NSFetchRequest *fetchRequest = [[[DataManager sharedInstance]
fetchRequestFromTemplateWithName variables
问题 I'm using Xcode 4.2.1 and trying to use a variable. I understand in xcode 4 you need to set the variable with $variable . I have in Xcode for my fetch request the variable as $currDate and my code as NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"YYYYMMdd"]; NSDate *currDate = [NSDate date]; NSString *currDateString = [dateFormatter stringFromDate:currDate]; NSError *error; NSFetchRequest *fetchRequest = [[[DataManager sharedInstance]
fetchRequestFromTemplateWithName variables
问题 I'm using Xcode 4.2.1 and trying to use a variable. I understand in xcode 4 you need to set the variable with $variable . I have in Xcode for my fetch request the variable as $currDate and my code as NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"YYYYMMdd"]; NSDate *currDate = [NSDate date]; NSString *currDateString = [dateFormatter stringFromDate:currDate]; NSError *error; NSFetchRequest *fetchRequest = [[[DataManager sharedInstance]
fetchRequestFromTemplateWithName variables
问题 I'm using Xcode 4.2.1 and trying to use a variable. I understand in xcode 4 you need to set the variable with $variable . I have in Xcode for my fetch request the variable as $currDate and my code as NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"YYYYMMdd"]; NSDate *currDate = [NSDate date]; NSString *currDateString = [dateFormatter stringFromDate:currDate]; NSError *error; NSFetchRequest *fetchRequest = [[[DataManager sharedInstance]
fetchRequestFromTemplateWithName variables
问题 I'm using Xcode 4.2.1 and trying to use a variable. I understand in xcode 4 you need to set the variable with $variable . I have in Xcode for my fetch request the variable as $currDate and my code as NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"YYYYMMdd"]; NSDate *currDate = [NSDate date]; NSString *currDateString = [dateFormatter stringFromDate:currDate]; NSError *error; NSFetchRequest *fetchRequest = [[[DataManager sharedInstance]
Method calling via performSelectorOnMainThread Vs Normal method calling
问题 can any one tell me what is different when I call method using performSelectorOnMainThread and calling same method without performSelector. For Exa. -(void)sampleCALL{ .......... } NOW Call this method using these two senario: [[self performSelectorOnMainThread:@selector(sampleCALL) withObject:nil waitUntilDone:NO];]; or [self sampleCALL]; How these two method are getting executed? Please help me to find this concept properly. 回答1: in firs one case [self sampleCALL]; your method will be