Question

嗨，我有一个问题，我几天都无法想象。我有一个touchesBegan方法，我想用它来判断有人正在点击UIImageView，以便它可以使用NSTimers上下移动不同的UIImageView。由于某种原因，我的TouchesBegan不会工作，我知道这是问题，因为我测试了NSLogs，结果指向没有被调用的方法。这是我的代码，谢谢附：如果有一个超级快速修复，它让我看起来很蠢，我很抱歉，我现在只开发了6天。

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    CGPoint pt = [[touches anyObject] locationInView:self.view];

    if (CGRectContainsPoint(flyImageButton.frame, pt)) {

        flying = YES;

        [playerFall invalidate];

        playerFlyUp = [NSTimer scheduledTimerWithTimeInterval:.03 target:self selector:@selector(flyUp) userInfo:nil repeats:YES];

        [[NSRunLoop mainRunLoop] addTimer:playerFlyUp forMode:NSRunLoopCommonModes];
    }
}

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    if (flying == YES) {
        flying = NO;
        [playerFlyUp invalidate];
        [self startFallTimer];
    }
}

这是我的.h文件，供那个问...

的人

#import <UIKit/UIKit.h>

@interface GameViewController : UIViewController {
    IBOutlet UILabel *scoreLabel, *coinsLabel;
    IBOutlet UIImageView *flyImageButton, *playerImage, *flyingObject;
    IBOutlet UIScrollView *scroll;

    int score;
    int coins;

    BOOL flying;

    NSTimer *playerFlyUp, *playerFall, *scoreTimer, *coinsTimer;
}

@end

我也尝试过UITouch ......

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    //CGPoint pt = [[touches anyObject] locationInView:self.view];
    UITouch *touch = [[event allTouches]anyObject];

    //if (CGRectContainsPoint(flyImageButton.frame, pt)) {
    if ([touch view] == flyImageButton) {
        flying = YES;

        [playerFall invalidate];

        playerFlyUp = [NSTimer scheduledTimerWithTimeInterval:.03 target:self selector:@selector(flyUp) userInfo:nil repeats:YES];

        [[NSRunLoop mainRunLoop] addTimer:playerFlyUp forMode:NSRunLoopCommonModes];
    }
}

让我感到困惑的是，无论我触摸到哪里，NSLog“Pos 1”都不会触发......

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    //CGPoint pt = [[touches anyObject] locationInView:self.view];
    UITouch *touch = [[event allTouches]anyObject];
    CGPoint loc = [touch locationInView:self.view];

    //This NSLog never displays leading me to think that my CGPoint isn't the issue...
    NSLog(@"Pos 1");

    if (CGRectContainsPoint(flyImageButton.frame, loc)) {
    //if ([touch view] == flyImageButton) {
        NSLog(@"Pos 2");
        flying = YES;

        [playerFall invalidate];

        playerFlyUp = [NSTimer scheduledTimerWithTimeInterval:.03 target:self selector:@selector(flyUp) userInfo:nil repeats:YES];

        [[NSRunLoop mainRunLoop] addTimer:playerFlyUp forMode:NSRunLoopCommonModes];
    }
}

Answer 1

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
      UITouch * touch = [[event allTouches]anyObject];
}

Answer 2

CGPoint pt = [[touches anyObject] locationInView:nameofyour_imageview];

将此更改为指向您的UIImageview而非self.view或尝试点按手势识别器

我的触摸开始不会触发

2 个答案: