如何在我的基于视图的应用程序中添加UITableView,用户将点击多个单元格,它将被选中,就像Clock应用程序的"New Alarm"设置名为"Repeat"(Clock> Alarms> +>重复),我怎样才能获得数组中的所有选定单元格？
嘿! 我需要知道如何让我的iOS应用程序在应用程序的后台开始下载(比如,在AppDelegate文件中运行下载),因此更改ViewControllers不会中断或取消下载.我还需要能够获得download(0.00000 - 1.00000)的进度,将UIProgressView对象设置为,这也意味着我需要一个- (void)progressDidChangeTo:(int)progress函数.
出于某种原因,我的应用程序将在我的设备上安装并运行正常,但是当我尝试在iPhone模拟器上安装我的应用程序时,我收到以下警告:
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/UIKit.framework/UIKit, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/Foundation.framework/Foundation, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/CoreGraphics.framework/CoreGraphics, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/CFNetwork.framework/CFNetwork, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/AudioToolbox.framework/AudioToolbox, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration, missing required architecture i386 in file
ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/QuartzCore.framework/QuartzCore, missing required architecture i386 in …我试图在UIView垂直翻转动画问题的答案中运行代码 ,我在Xcode中不断收到此错误:
error: Semantic Issue: Assigning to 'CGAffineTransform' (aka 'struct CGAffineTransform') from incompatible type 'CATransform3D' (aka 'struct CATransform3D')
而且我不知道如何修复它,并且似乎不应该根据其他人对代码工作的说法而发生这种情况.
错误就在于
myView.transform = CATransform3DMakeRotation(M_PI_2,1.0,0.0,0.0);
嘿! 我将我的Mac应用程序设置为在myApp上启动://协议在浏览器中调用,如Safari,但是当该协议调用该应用程序时,我似乎无法执行操作.委托方法必须是这样的:
- (void)applicationDidBecomeActiveByURL:(NSURL *)protocol;
我不知道这是因为我是Mac新手,但我对iPhone开发有点擅长,所以我知道iPhone的开发方式,但不是Mac的开发方式
我想知道如何创建一个导航栏,用户可以点击导航栏的标题,这样它就会打开一个新的模态视图,类似于Twitter应用程序,当用户创建推文时,他们有多个帐户链接.
嘿! 我想知道是否有任何方法可以检查字符串的第一个字母是否是NSString中的大写字母.类似的东西:
if ([[string substringToIndex:1] isCapitalLetter]) {
// CODE
}
- 要么 -
if ([self isCapitalLetter:[string substringToIndex:1]]) {
// CODE
}
我试图找到以特定字符串开头的NSStrings数组中的所有对象,并返回包含所有这些对象的较小数组.例如,您可以拥有包含对象的数组:
'Cat',
'Dog',
'Dolphin',
'Whale'
当它搜索的字符串是do一个新的NSArray时,只返回Dog和Dolphin对象.