标签:
Target Action And UIControl
target-action的设计模式
UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
button.frame = CGRectMake(135, 100, 80, 40);
[button setTitle:@"??" forState:UIControlStateNormal];
button.backgroundColor = [UIColor colorWithRed:0.510 green:0.983 blue:1.000 alpha:1.000];
button.titleLabel.font = [UIFont systemFontOfSize:30];
[button setTintColor:[UIColor whiteColor]];
// button.showsTouchWhenHighlighted = YES;
[button addTarget:self action:@selector(press:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
- (void)press:(UIButton *)button {
button.backgroundColor = [UIColor colorWithRed:arc4random() % 256 / 255. green:arc4random() % 256 / 255. blue:arc4random() % 256 / 255. alpha:1.000];
}
target-action的设计模式(目标动作机制)
多用于view的设计, 用于降低耦合性
UIControl, 继承于UIView, 内部封装了tar get-action的设计模式
TouchViewProPro *touchViewProPro = [[TouchViewProPro alloc] initWithFrame:CGRectMake(130, 320, 100, 100)];
touchViewProPro.backgroundColor = [UIColor orangeColor];
[touchViewProPro addTarget:self action:@selector(change:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:touchViewProPro];
[touchViewProPro release];
- (void)change:(TouchViewProPro *)view {
// NSLog(@"change");
打印当前方法的名字
NSLog(@"%s", __FUNCTION__);
打印行数
NSLog(@"%d", __LINE__);
移除某个方法
[view removeTarget:self action:@selector(change:) forControlEvents:UIControlEventTouchUpInside];
}
UIControl的子类
1.UIButton, 按钮
2.UITextField, 单行文本输入框
3.UISegmentedControl, 分段控制器
4.UISlider, 滑块
5.UIStepper, 计步器
创建一个BUtton UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; button.frame = CGRectMake(140, 80, 80, 40); button.backgroundColor = [UIColor blueColor]; [button setTitle:@"??" forState:UIControlStateNormal]; [button addTarget:self action:@selector(pressButton) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:button]; 创建TextField textField = [[UITextField alloc] initWithFrame:CGRectMake(100, 160, 375 - 200, 40)]; textField.borderStyle = UITextBorderStyleRoundedRect; textField.placeholder = @" TextField"; textField.text = @"吃饭"; [self.view addSubview:textField]; [textField release]; UISegmentedControl, 分段控制器, 继承于UIControl NSArray *array = [NSArray arrayWithObjects:@"吃饭", @"睡觉", @"打豆豆", nil]; UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:array]; segmentedControl.frame = CGRectMake(100, 220, 375 - 200, 40); segmentedControl.backgroundColor = [UIColor whiteColor]; 属性 默认选中哪个分段 注: 设置选中某个分段, 只修改了样式, 没有触发关联的方法 segmentedControl.selectedSegmentIndex = 0; 渲染色, 默认是蓝色 segmentedControl.tintColor = [UIColor colorWithRed:0.000 green:0.502 blue:1.000 alpha:1.000]; [segmentedControl addTarget:self action:@selector(change:) forControlEvents:UIControlEventValueChanged]; segmentedControl.tag = 100; [self.view addSubview:segmentedControl]; [segmentedControl release]; UISlider, 滑块, 继承于UIControl UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(100, 280, 375 - 200, 40)]; 最大值, 默认: 1.0 slider.maximumValue = 100; 最小值, 默认: 0.0 slider.minimumValue = 50; 当前值, 默认为最小值 slider.value = 62.5; 划过去的轨道颜色, 默认蓝色 slider.minimumTrackTintColor = [UIColor redColor]; 未划过去的轨道颜色, 默认浅灰色 slider.maximumTrackTintColor = [UIColor greenColor]; 设置滑块的颜色 [slider setThumbTintColor:[UIColor blueColor]]; 关联方法 [slider addTarget:self action:@selector(slide:) forControlEvents:UIControlEventValueChanged]; [self.view addSubview:slider]; [slider release]; UIStepper, 计步器, 继承于UIControl UIStepper *stepper = [[UIStepper alloc] initWithFrame:CGRectMake(140, 340, 375 - 200, 40)]; 最小值, 默认0.0 stepper.minimumValue = 1; 最大值, 默认100 stepper.maximumValue = 10; 当前值 stepper.value = 5; 改变量, 默认1 stepper.stepValue = 2; 渲染色 stepper.tintColor = [UIColor colorWithRed:1.000 green:0.521 blue:0.342 alpha:1.000]; 关联方法 [stepper addTarget:self action:@selector(step:) forControlEvents:UIControlEventValueChanged]; [self.view addSubview:stepper]; [stepper release]; } - (void)step:(UIStepper *)stepper { NSLog(@"%s", __FUNCTION__); NSLog(@"value = %.2f", stepper.value); } - (void)slide:(UISlider *)slider { NSLog(@"%s", __FUNCTION__); NSLog(@"%.2lf", slider.value); } - (void)change:(UISegmentedControl *)segmentedControl { NSLog(@"%s", __FUNCTION__); NSLog(@"%ld", segmentedControl.selectedSegmentIndex); //获取分段控制器的某个标题 NSString *title = [segmentedControl titleForSegmentAtIndex:segmentedControl.selectedSegmentIndex]; NSLog(@"%@", title); textField.text = title; } - (void)pressButton { NSLog(@"%s", __FUNCTION__); UISegmentedControl *control = (UISegmentedControl *)[self.view viewWithTag:100]; 分段控制的分段数 NSLog(@"%lu", control.numberOfSegments); 插入一个分段 [control insertSegmentWithTitle:@"看电影" atIndex:control.numberOfSegments animated:YES]; }
UIImage, 图片类, 继承于NSObject
UIImageView, 继承于UIView, 用于显示图片
imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"1"]];
imageView.frame = CGRectMake(0, 0, 500 , 360);
imageView.center = self.view.center;
[self.view addSubview:imageView];
[imageView release];
播放多张图片
NSMutableArray *marray = [[NSMutableArray alloc] initWithCapacity:14];
for (NSInteger i = 1; i <= 14; i++) {
NSString *name = [NSString stringWithFormat:@"%ld", i];
UIImage *image = [UIImage imageNamed:name];
[marray addObject:image];
}
动画数组, 数组内存放UIImage
imageView.animationImages = marray;
动画时长
imageView.animationDuration = 1;
动画重复次数
imageView.animationRepeatCount = 10;
//开始动画
[imageView startAnimating];
_flag = YES;
//
// [imageView stopAnimating];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(135, 20, 100, 40);
[button setTitle:@"停止" forState:UIControlStateNormal];
[button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
button.titleLabel.font = [UIFont systemFontOfSize:20];
[button addTarget:self action:@selector(stop:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
}
- (void)stop:(UIButton *)button {
NSLog(@"%s", __FUNCTION__);
// if (_flag) {
// [imageView stopAnimating];
// _flag = NO;
// } else {
// [imageView startAnimating];
// _flag = YES;
// }
if (imageView.isAnimating) {
[imageView stopAnimating];
[button setTitle:@"开始" forState:UIControlStateNormal];
} else {
[imageView startAnimating];
[button setTitle:@"停止" forState:UIControlStateNormal];
}
}
2015-10-22 19:51:07
标签:
原文地址:http://www.cnblogs.com/OrangesChen/p/4902504.html