小编Car*_*one的帖子

我一直无法找到获得设备高度的方法.有人可以给我一个指针或组合一个短脚本,获取设备的高度并打印出来吗？只有在迅速.谢谢!

我使用下面的代码将UIImageViews旋转到不同的角度.

self.imageOne.transform = CGAffineTransformMakeRotation(CGFloat(-rotation))
self.imageTwo.transform = CGAffineTransformMakeRotation(CGFloat(-rotation-0.1))
self.imageThree.transform = CGAffineTransformMakeRotation(CGFloat(-change+0.1))

是否有任何方法可以使图像从顶部而不是中间转动？我想避免让精灵参与,因为我从未使用它们,也不知道如何在单个视图应用程序中使精灵工作.谢谢你的时间.

我一直无法使下面的代码一遍又一遍地重复audioURL的声音.现在它只是在视图打开时播放一次,然后停止.

import UIKit
import AVFoundation
class aboutViewController: UIViewController {

    var audioUrl = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("chimes", ofType: "wav")!)
    var audioEngine = AVAudioEngine()
    var myPlayer = AVAudioPlayerNode()

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

        audioEngine.attachNode(myPlayer)
        var audioFile = AVAudioFile(forReading: audioUrl, error: nil)
        var audioError: NSError?
        audioEngine.connect(myPlayer, to: audioEngine.mainMixerNode, format: audioFile.processingFormat)
        myPlayer.scheduleFile(audioFile, atTime: nil, completionHandler: nil)
        audioEngine.startAndReturnError(&audioError)
        myPlayer.play()


    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

谢谢!

我一直在努力寻找一种方法来启动带有方形实时视图的UIImagePickerController,并让它拍摄方形图片.我现在用于启动相机的代码如下

func takePicture() {
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary){
        println("Button capture")
        var imag = UIImagePickerController()
        imag.delegate = self
        imag.sourceType = UIImagePickerControllerSourceType.Camera
        //imag.mediaTypes = [kUTTypeImage];
        imag.allowsEditing = false
        self.presentViewController(imag, animated: true, completion: nil)
    }
}

func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!) {
    let selectedImage : UIImage = image
    //var tempImage:UIImage = editingInfo[UIImagePickerControllerOriginalImage] as UIImage

    var newImage: UIImage = resizeImageWithImage(selectedImage, size: CGSize(width: 320, height: 568))

    datImage.image=newImage

    let paths: NSArray = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
    let documentsDir: NSString = paths.objectAtIndex(0) as NSString

    var dateFormat = …

所以下面的代码应该一遍又一遍地重放chimes.wav文件,音高更高,但是底部的错误会崩溃.任何人都可以找到导致此错误的原因吗？

import UIKit
import AVFoundation
class aboutViewController: UIViewController {


    var audioEngine: AVAudioEngine = AVAudioEngine()
    var audioFilePlayer: AVAudioPlayerNode = AVAudioPlayerNode()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.



        var timePitch = AVAudioUnitTimePitch()
        timePitch.pitch = 2000
        let filePath: String = NSBundle.mainBundle().pathForResource("chimes", ofType: "wav")!
        let fileURL: NSURL = NSURL(fileURLWithPath: filePath)!
        let audioFile = AVAudioFile(forReading: fileURL, error: nil)
        let audioFormat = audioFile.processingFormat
        let audioFrameCount = UInt32(audioFile.length)
        let audioFileBuffer = AVAudioPCMBuffer(PCMFormat: audioFormat, frameCapacity: audioFrameCount)
        audioFile.readIntoBuffer(audioFileBuffer, …