[ios] iOS 7 스타일 블러보기

UIView의 하위 클래스 인 UIToolBar를 사용하여 클래스를 만들고 별도의 뷰 컨트롤러에서 인스턴스화 할 수 있습니다. 이 접근 방식은 실시간 피드백 (이 경우 AVCaptureSession에 대한)을 제공하는 반투명 UIToolBar (UIView에 의해 서브 클래 싱됨)를 보여줍니다.

YourUIView.h

#import <UIKit/UIKit.h>

@interface YourUIView : UIView
@property (nonatomic, strong) UIColor *blurTintColor;
@property (nonatomic, strong) UIToolbar *toolbar;
@end

YourUIView.m

#import "YourUIView.h"

@implementation YourUIView

- (instancetype)init
{
    self = [super init];
    if (self) {
        [self setup];
    }
    return self;
}

- (void)setup {
    // If we don't clip to bounds the toolbar draws a thin shadow on top
    [self setClipsToBounds:YES];

    if (![self toolbar]) {
        [self setToolbar:[[UIToolbar alloc] initWithFrame:[self bounds]]];
        [self.toolbar setTranslatesAutoresizingMaskIntoConstraints:NO];
        [self insertSubview:[self toolbar] atIndex:0];

        [self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[_toolbar]|"
                                                                     options:0
                                                                     metrics:0
                                                                       views:NSDictionaryOfVariableBindings(_toolbar)]];
        [self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[_toolbar]|"
                                                                     options:0
                                                                     metrics:0
                                                                       views:NSDictionaryOfVariableBindings(_toolbar)]];
    }
}

- (void) setBlurTintColor:(UIColor *)blurTintColor {
    [self.toolbar setBarTintColor:blurTintColor];
}

@end

위의 UIView가 사용자 정의되면 계속해서 ViewController의 하위 클래스 인 클래스를 만듭니다. 아래에서 AVCapture 세션을 사용하는 클래스를 만들었습니다. Apple의 내장 카메라 구성을 재정의하려면 AVCaptureSession을 사용해야합니다. 따라서 YourUIView 클래스 에서 평범한 UIToolBar를 오버레이 할 수 있습니다 .

YourViewController.h

#import <UIKit/UIKit.h>

@interface YourViewController : UIViewController
@property (strong, nonatomic) UIView *frameForCapture;
@end

YourViewController.m

#import "YourViewController.h"
#import <AVFoundation/AVFoundation.h>
#import "TestView.h"

@interface YourViewController ()
@property (strong, nonatomic) UIButton *displayToolBar;

@end

@implementation YourViewController


AVCaptureStillImageOutput *stillImageOutput;
AVCaptureSession *session;

- (void) viewWillAppear:(BOOL)animated
{
    session = [[AVCaptureSession alloc] init];
    [session setSessionPreset:AVCaptureSessionPresetPhoto];

    AVCaptureDevice *inputDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    NSError *error;
    AVCaptureDeviceInput *deviceInput = [AVCaptureDeviceInput deviceInputWithDevice:inputDevice error:&error];

    if ([session canAddInput:deviceInput]) {
        [session addInput:deviceInput];
    }

    AVCaptureVideoPreviewLayer *previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
    [previewLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];
    CALayer *rootLayer = [[self view] layer];
    [rootLayer setMasksToBounds:YES];
    CGRect frame = [[UIScreen mainScreen] bounds];

    self.frameForCapture.frame = frame;

    [previewLayer setFrame:frame];

    [rootLayer insertSublayer:previewLayer atIndex:0];

    stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
    NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys:AVVideoCodecJPEG, AVVideoCodecKey, nil];
    [stillImageOutput setOutputSettings:outputSettings];

    [session addOutput:stillImageOutput];

    [session startRunning];

    [self.navigationController setNavigationBarHidden:YES animated:animated];
    [super viewWillAppear:animated];
}


- (void)viewDidLoad
{
    [super viewDidLoad];

    /* Open button */

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 350, self.view.bounds.size.width, 50)];
    [button addTarget:self action:@selector(showYourUIView:) forControlEvents:UIControlEventTouchUpInside];
    [button setTitle:@"Open" forState:UIControlStateNormal];
    [button setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    button.backgroundColor = [UIColor greenColor];
    [self.view addSubview:button];

    UIButton *anotherButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 50, self.view.bounds.size.width, 50)];
    [anotherButton addTarget:self action:@selector(showYourUIView:) forControlEvents:UIControlEventTouchUpInside];
    [anotherButton setTitle:@"Open" forState:UIControlStateNormal];
    [anotherButton setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];
    anotherButton.backgroundColor = [UIColor redColor];
    [self.view addSubview:anotherButton];

}

- (void) showYourUIView:(id) sender
{
    TestView *blurView = [TestView new];
    [blurView setFrame:self.view.bounds];
    [self.view addSubview:blurView];
}


@end

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