小编JSA*_*986的帖子

我在我的应用程序中播放声音,我想循环播放.我对此的研究并没有完全解决我的问题.

我的代码.m

CFBundleRef mainBundle = CFBundleGetMainBundle();
CFURLRef soundFileURLRef;
soundFileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"ar4", CFSTR 
                                          ("wav"), NULL);


UInt32 soundID;
AudioServicesCreateSystemSoundID (soundFileURLRef, &soundID);
AudioServicesPlaySystemSound (soundID);

我想我需要把这样的东西放进去

numberOfLoops = -1;

但不确定如何在我的代码中实现,因为我收到numberOfLoops的未声明错误.一些建议将非常感谢

由于标题表明我的活动指标处于状态不会停止动画.

我在这里做了一些研究,不知道我做错了什么......

在我的Apps委托中,我有

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{


UIApplication* app = [UIApplication sharedApplication];
app.networkActivityIndicatorVisible = NO;

在我的视图controller.m中,我想调用活动指示器

 NSString *web = @"http://google.com";
    NSURL *url = [NSURL URLWithString:web];
    NSURLRequest *requestUrl = [NSURLRequest requestWithURL:url];
    [toweb loadRequest:requestUrl];

    UIApplication* app = [UIApplication sharedApplication];

     app.networkActivityIndicatorVisible = YES; <<<<<<<<<<<<<<<<<<<<<

现在继续问题我试图再次隐藏它:

- (void)DidFinishLoad:(UIWebView *)toweb{
 [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
 }    

}

任何建议表示赞赏

可能重复:当
popover仍然可见时,到达UIPopovercontroller dealloc

我正在创建一个通用的应用程序,并试图从相机胶卷中选择一个图像.在iPhone上工作正常,iPad想要弹出,所以已经这样做了,现在不断出错

-[UIPopoverController dealloc] reached while popover is still visible.

我研究过:

堆栈链接

堆栈链接

和谷歌,没有解决这个问题

现在,任何建议都表示赞赏

我已经在.h中实现了popover委托

.M

 - (void)logoButtonPressed:(id)sender /////////////iPad requires seperate method ////////////////
 {                                        

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {

LogCmd();
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.delegate = self;
imagePicker.allowsEditing = YES;
////////
imagePicker.modalPresentationStyle = UIModalPresentationCurrentContext;
////////
[self presentModalViewController:imagePicker animated:YES];


}

else

{

    // We are using an iPad
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
    imagePickerController.delegate = self;
    UIPopoverController *popoverController=[[UIPopoverController alloc] initWithContentViewController:imagePickerController];
    popoverController.delegate=self;


    [popoverController …

我想从自定义值自动完成文本字段

在这里研究了Google和SO UITextField Autocomplete - iPhone SDK

我试过这个:

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

    if ([string isEqualToString:@"Fac"]) {
        _clientField.text = @"Factory";
    }

    return YES;
}

问题是我没有输入预测值Factory,只输入了类型值Fac

编辑

根据答案尝试了这个...

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

if ([string isEqualToString:@"Fac"]) {
    _clientField.text = [_clientField.text stringByReplacingCharactersInRange:range
                                                   withString:@"Factory"];
  }

  return NO;
}

还是一样

在我的应用程序中,如果用户从相机胶卷中选择一个图像作为compnay徽标(添加到最终的pdf),它可以将附加文件大小从8mb(没有图像)到29mb.当用户通过电子邮件发送文件时,这是一个问题,大多数服务器允许附件大小

- (IBAction)schemeLogoPressed:(id)sender {
 LogCmd();
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    imagePicker.delegate = self;
    imagePicker.allowsEditing = NO;
    [self.editController presentModalViewController:imagePicker animated:YES];
   }    

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
 {
    DebugLog(@"info dict: %@", info);
    [picker dismissModalViewControllerAnimated:YES];
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
    self.schemeLogo.backgroundColor = [UIColor whiteColor];
    self.schemeLogo.image = image;
    NSData *imageData1 = UIImagePNGRepresentation(image);
    NSString *path1 = [ICUtils pathForDocument:@"schemeLogo.png"];
    [imageData1 writeToFile:path1 atomically:NO];

我可以做些什么来优化拾取的图像大小？

如果通过iOS 7中的AirDrop发送从应用程序生成的PDF,有任何想法如何设置文档的标题？

通常搜索SO和文档没有回答我的问题

 NSString *fileName = [NSString stringWithFormat:@"userCert_%@",self.certificate.reference];

 NSData *cert = self.pdfData;

     UIActivityViewController *activityCtr = [[UIActivityViewController alloc] initWithActivityItems:@[cert]
                                                                              applicationActivities:nil];


 NSMutableArray *excludedActivities = [self iOS6Activities].mutableCopy;
    [excludedActivities addObject:UIActivityTypeAddToReadingList];
    [excludedActivities addObject:UIActivityTypePostToFlickr];
    [excludedActivities addObject:UIActivityTypePostToTencentWeibo];
    [excludedActivities addObject:UIActivityTypePostToVimeo];
    [activityCtr setExcludedActivityTypes:excludedActivities];

    [self presentViewController:activityCtr
                       animated:YES
                     completion:nil];

自从Swift 2即将到来

无法使用参数类型(productIdentifiers:Set)为类型SKproductsRequest调用初始值设定项

对于我的应用程序购买标识符 NSSet

if(SKPaymentQueue.canMakePayments()) {

        let productID:NSSet = NSSet(objects:
            "com.someurl.monthlyAutoRenewable",
            "com.someurl.annualAutoRenewable")

        let request: SKProductsRequest = SKProductsRequest(productIdentifiers: productID as Set<NSObject>)
        request.delegate = self
        request.start()
    }
    else {


    }

我一个接一个地连续显示两个警报视图,具体如下:

-IBAction

UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"my message"     delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert setDelegate:self];

[alert show];




}

- (void)didPresentAlertView:(UIAlertView *)alertView 
{

[alertView setTitle:@"My new title"];
[alertView setMessage:@"My new message"];

}

从第一个警报视图到第二个警报视图的转换速度非常快,用户没有时间阅读第一条消息.有人可以建议如何在警报之间添加延迟.我想我需要实现一个NSTimer,但实现这个我可以使用一些建议.

我在编译设备时遇到了以下错误

File is universal (3 slices) but does not contain a(n) armv7s slice: /Users/xxx/Desktop/xxxxxxx/DropboxSDK.framework/DropboxSDK for architecture armv7s clang: error: linker command failed with exit code 1 (use -v to see invocation)

我已检查所有.m文件是否链接,一切正常,为什么它只在设备上执行此操作,编译器想要阻止它抱怨什么？

如果我有100个UITextFields,

myTextfFeld1,myTextField2......等等mytextField100

......他们都执行相同的动作,说变化myTextField1.alpha = 0.4来myTextField1.alpha = 1.

而不是写出100次这是一个更有效的方法来做到这一点

我在这里看一下iOS循环对象的属性并添加动作,但它仍然意味着将所有内容添加UITextFields到数组中.