小编And*_*eev的帖子

因此,numpad键盘默认没有"完成"或"下一步"按钮,所以我想添加一个.在iOS 6及更低版本中,有一些技巧可以在键盘上添加一个按钮,但它们似乎不适用于iOS 7.

首先,我订阅显示通知的键盘

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardWillShow:)
                                             name:UIKeyboardWillShowNotification
                                           object:nil];

然后我尝试在键盘出现时添加一个按钮:

- (void)keyboardWillShow:(NSNotification *)note 
{
    // create custom button
    UIButton *doneButton = [UIButton buttonWithType:UIButtonTypeSystem];
    doneButton.frame = CGRectMake(0, 50, 106, 53);
    doneButton.adjustsImageWhenHighlighted = NO;
    [doneButton setTitle:@"Done" forState:UIControlStateNormal];
    [doneButton addTarget:self action:@selector(dismissKeyboard) forControlEvents:UIControlEventTouchUpInside];

    // locate keyboard view
    UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
    UIView* keyboard;
    for(int i=0; i<[tempWindow.subviews count]; i++) 
    {
        keyboard = [tempWindow.subviews objectAtIndex:i];
        // keyboard view found; add the custom button to it
        if([[keyboard description] hasPrefix:@"UIKeyboard"] == YES)
        [keyboard addSubview:doneButton]; …

在iOS9之前,我们创建了一个类似的目录

let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
let logsPath = documentsPath.stringByAppendingPathComponent("logs")
let errorPointer = NSErrorPointer()
NSFileManager.defaultManager().createDirectoryAtPath(logsPath, withIntermediateDirectories: true, attributes: nil, error: errorPointer)

但是对于iOS9,他们删除了String.stringByAppendingPathComponent.自动转换工具取代了我们对NSURL使用String.createDirectoryAtPath()接受一个字符串,所以我需要将NSURL转换为字符串.我们像这样使用absolutePath :(更新为iOS9)

let documentsPath = NSURL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0])
let logsPath = documentsPath.URLByAppendingPathComponent("logs")
do {
    try NSFileManager.defaultManager().createDirectoryAtPath(logsPath.absoluteString, withIntermediateDirectories: true, attributes: nil)
} catch let error as NSError {
    NSLog("Unable to create directory \(error.debugDescription)")
}

但是我收到以下错误:

无法创建目录错误Domain = NSCocoaErrorDomain Code = 513"您无权将文件"logs"保存在"Documents"文件夹中." UserInfo = {NSFilePath = file:/// var/mobile/Containers/Data/Application/F2EF2D4F-94AF-4BF2-AF9E-D0ECBC8637E7/Documents/logs /,NSUnderlyingError = 0x15664d070 {Error Domain = NSPOSIXErrorDomain Code = …

在MVVM WPF应用程序中.

你如何设置第二个Windows父级ViewModel？

例:

view1 - viewModel1

viewModel1的命令调用:

var view2 = new view2

view2.Owner= <----这是问题所在.如何从这里获取view1作为所有者viewModel？

view2.Show()

编辑:

请参阅下面接受的答案,然后阅读以下编辑内容.

我正在使用MVVM灯 - > http://mvvmlight.codeplex.com/ (真棒顺便说一句)

烘焙消息传递系统非常棒.我现在正在从viewmodel向我的视图发送一条消息,告诉它显示另一个窗口.

对于消息我当前在主视图中使用带有switch语句的字符串来确定要打开的视图; 但是我可能会修改也是MVVM light toolkit一部分的令牌.

谢谢!

如何获得UIImage的SKTexture？

我试图让UIImage从SKTextureAtlas,但似乎不是工作压力太大:

// p40_prop1 is a part of SKTextureAtlas
UIImage *image = [UIImage imageNamed:@"p40_prop1"];

image 没有.

我正在尝试从Swift 1.2更改为Swift 2.0,而我正处于更改的末尾.目前我正在对MapViewController进行更改,并且没有任何错误或警告,但我的pin(annotationView)的自定义图像没有分配给引脚,而是显示默认值(红点).

这是我的代码,我希望你能帮助我一些提示,因为我认为一切都很好,但它仍然无法正常工作:

func parseJsonData(data: NSData) -> [Farmacia] {

    let farmacias = [Farmacia]()

    do
    {
        let jsonResult = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as? NSDictionary

        // Parse JSON data
        let jsonProductos = jsonResult?["farmacias"] as! [AnyObject]

        for jsonProducto in jsonProductos {

            let farmacia = Farmacia()
            farmacia.id = jsonProducto["id"] as! String
            farmacia.nombre = jsonProducto["nombre"] as! String
            farmacia.location = jsonProducto["location"] as! String

            let geoCoder = CLGeocoder()
            geoCoder.geocodeAddressString(farmacia.location, completionHandler: { placemarks, error in

                if error != nil {
                    print(error)
                    return
                }

                if placemarks != …

我有以下代码用于测试目的:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self customTouchHandler:touches];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self customTouchHandler:touches];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self customTouchHandler:touches];
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self customTouchHandler:touches];
}
- (void)customTouchHandler:(NSSet *)touches
{
    for(UITouch* touch in touches){
        if(touch.phase == UITouchPhaseBegan)
            touchesStarted++;
        if(touch.phase == UITouchPhaseEnded || touch.phase == UITouchPhaseCancelled)
            touchesFinished++;
    }
    NSLog(@"%d / %d", touchesStarted, touchesFinished);
}

我想当屏幕上没有触摸时,touchesStarted应该总是等于touchesFinished,但我有一个非常奇怪的输出:

2014-04-16 13:44:27.780 App[5925:60b] 2 / 0
2014-04-16 13:44:27.911 App[5925:60b] 2 / …

在Swift中,UIControl似乎没有setEnabled:方法.有没有办法检测控制状态何时发生变化？

我有以下课程:

class BaseCache<T: Equatable>: NSObject {

    var allEntities = [T]()

    // MARK: - Append

    func appendEntities(newEntities: [T]) {
        ....
    }
}

现在我想继承它,但是我得到了令人讨厌的错误,我的类型"不符合协议'Equatable'":

看起来斯威夫特的仿制药真的很痛苦.

这是我在日志中看到的内容:

16:33:20.236: Call is Dialing
16:33:21.088: AVAudioSessionInterruptionNotification
16:33:21.450: AVAudioSessionRouteChangeNotification
16:33:21.450: ....change reason CategoryChange
16:33:21.539: AVAudioEngineConfigurationChangeNotification
16:33:21.542: Starting Audio Engine
16:33:23.863: AVAudioSessionRouteChangeNotification
16:33:23.863: ....change reason OldDeviceUnavailable
16:33:23.860 ERROR:     [0x100a70000] AVAudioIONodeImpl.mm:317: ___ZN13AVAudioIOUnit11GetHWFormatEjPj_block_invoke: required condition is false: hwFormat
*** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: hwFormat'

我订阅了两个AVAudioEngineConfigurationChangeNotification,AVAudioSessionInterruptionNotification:

@objc private func handleAudioEngineConfigurationChangeNotification(notification: NSNotification) {
    println2(notification.name)
    makeEngineConnections()
    startEngine()
}

@objc private func handleAudioSessionInterruptionNotification(notification: NSNotification) {
    println2(notification.name)
    if let interruptionType = AVAudioSessionInterruptionType(rawValue: notification.userInfo?[AVAudioSessionInterruptionTypeKey] as! UInt) { …

相反,只出现一个空白视图.

以下是我加载广告请求的方式:

GADMobileAds.configure(withApplicationID: "ca-app-pub-9213331484438711~8534798836") // actual app id
bannerView.delegate = self
bannerView.rootViewController = self
bannerView.adSize = kGADAdSizeLargeBanner
// unit id taken from guide: https://firebase.google.com/docs/admob/ios/quick-start
// Actual unit id doesn't work either.
bannerView.adUnitID = "ca-app-pub-3940256099942544/2934735716"
let request = GADRequest()
request.testDevices = [kDFPSimulatorID]
bannerView.layoutIfNeeded()
bannerView.load(request)

我已经开始Allow Arbitrary Loads了YES,但这并没有帮助.委托方法甚至不被调用.我错过了什么吗？有没有人能够让Admob在iMessage扩展中工作？

可在此处找到示例项目.