Ios image.background更改颜色并重复动画

我正在尝试为我的应用程序创建动画。我用我的按钮

startButton

启动动画。此按钮启动my

UIImage

的动画并更改其背景色

我想重复这个动画，但我找不到一个方法来做到这一点

- (IBAction)startButton:(id)sender {
    NSString * chosenColor = _colorField.text;
    NSString *color = [chosenColor substringToIndex:6];
    NSLog(@"colore: %@", color);
    NSString *color1 = [chosenColor substringFromIndex:8];
    NSLog(@"colore2: %@", color1);
    NSScanner* pScanner = [NSScanner scannerWithString: color];
    NSScanner * pScanner2 = [NSScanner scannerWithString:color1];
    unsigned int rgbValue = 0;
    unsigned int rgbValue2 = 0;
    [pScanner scanHexInt: &rgbValue];
    [pScanner2 scanHexInt:&rgbValue2];

    int index = 8;
    NSString *time = [NSString stringWithFormat:@"%c", [chosenColor characterAtIndex:index-2]];
    NSLog(@"tempo: %@", time);

    NSTimeInterval timeInterval = [time doubleValue];
    NSLog(@"interval: %f", timeInterval);

    _colorImage.backgroundColor = [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0
                                                  green:((float)((rgbValue & 0xFF00) >> 8))/255.0
                                                   blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0];

    [UIView animateWithDuration:timeInterval animations:^{
        _colorImage.backgroundColor = [UIColor colorWithRed:((float)((rgbValue2 & 0xFF0000) >> 16))/255.0
                                                      green:((float)((rgbValue2 & 0xFF00) >> 8))/255.0
                                                       blue:((float)(rgbValue2 & 0xFF))/255.0 alpha:1.0];
    } completion:NULL];
    }
}

---

使用如下所示的NSTimer：

self.animationTimer = [NSTimer scheduledTimerWithTimeInterval:1
                                                       target:self
                                                     selector:@selector(doAnimation:)
                                                     userInfo:nil
                                                      repeats:YES];

---

每当您希望动画结束时，只需调用[self.animationTimer invalidate]。doAnimation:方法将NSTimer对象作为参数。

使用

UIViewAnimationOptionRepeat

选项无限重复UIView动画

+ (void)animateWithDuration:(NSTimeInterval)duration 
                      delay:(NSTimeInterval)delay 
                    options:(UIViewAnimationOptions)options 
                 animations:(void (^)(void))animations 
                 completion:(void (^)(BOOL finished))completion

---

尝试添加此方法并调用它

-(void)runAnimationWithRepeateCount:(int)count
{
_colorImage.backgroundColor = [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0];

[UIView animateWithDuration:5 animations:^{
    _colorImage.backgroundColor = [UIColor colorWithRed:((float)((rgbValue2 & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue2 & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue2 & 0xFF))/255.0 alpha:1.0];
} completion:^(BOOL finished) {
    count = count-1;
    if (count>0) {            
        [self runAnimationWithRepeateCount:count];
    }
}];
}

并传递计数，如要运行动画的次数

+ (void)animateWithDuration:(NSTimeInterval)duration 
                      delay:(NSTimeInterval)delay 
                    options:(UIViewAnimationOptions)options 
                 animations:(void (^)(void))animations 
                 completion:(void (^)(BOOL finished))completion

---

希望这能对你有所帮助。

你为什么不试试调用它自己的递归函数呢？我不懂对不起，好吧，告诉我你想重复多少次这个方法，这是你的动画代码。我想重复很多次我在文本字段中写的东西，我在文本字段中转换字符串的计数NSString*count=[chosenColor substringFromIndex:14]；整数=[count intValue]；我把重复计数放在哪里？它只支持无限计数。否则使用CABASICANIMSTRION。但是使用此方法，我不会用按钮启动动画。您可以在按钮上调用此方法单击iAction方法。我现在不知道如何在iAction中调用此方法…我是developerin count Xcode的新成员。请给我一个错误“变量不可赋值（缺少块类型说明符）