03_常用UI控件

/*________________________________UILabel________________________________________*/

- (void)initLabel {

UILabel *textLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 30, 100, 50)];
textLabel.backgroundColor = [UIColor grayColor];
textLabel.text = @"无限互联3G学院";
//创建字体对象，systemFontOfSize：使用系统字体，大小：12
UIFont *font = [UIFont systemFontOfSize:16];

//    UIFont *font = [UIFont fontWithName:@"Arial Hebrew" size:12];
//[UIFont familyNames] 获取所有的字体名称
//    NSLog(@"%@",[UIFont familyNames]);

textLabel.font = font;

//设置字体的颜色
textLabel.textColor = [UIColor greenColor];

//文本显示位置: 居左、居中、居右
textLabel.textAlignment = NSTextAlignmentCenter;

//如果是0，则自动折行
//    textLabel.numberOfLines = 0;

//自动根据文本内容调整宽度与高度
[textLabel sizeToFit];

[self.window addSubview:textLabel];

[textLabel release];

}

#pragma mark - UIButton
/*________________________________UIButton________________________________________*/

- (void)initButton {

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame = CGRectMake(10, 80, 100, 30);

//设置一般状态显示的标题
[button setTitle:@"保存" forState:UIControlStateNormal];
//高亮状态显示的文本
[button setTitle:@"正在点击.." forState:UIControlStateHighlighted];

//注意：title标题需要和一个状态绑定
//错误，没有为此标题设置状态，无法显示
//    button.titleLabel.text = @"保存";

//设置标题颜色，不同的状态对应不同的颜色
[button setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];
[button setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
//字体颜色也需要绑定状态，
//     button.titleLabel.textColor = [UIColor redColor];  //错误，没有绑定状态

//设置标题文本的字体
button.titleLabel.font = [UIFont systemFontOfSize:12];

//为按钮添加点击事件
//UIControlEventTouchUpInside: 按下、松开点击，必须在按钮范围之内
[button addTarget:self action:@selector(buttonAction:)
forControlEvents:UIControlEventTouchUpInside];

[self.window addSubview:button];

}

//定义图片按钮
- (void)initCustomButton {
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(200, 80, 90, 44);

//设置一般状态显示的标题
[button setTitle:@"保存" forState:UIControlStateNormal];
//高亮状态显示的文本
[button setTitle:@"正在点击.." forState:UIControlStateHighlighted];

//UIImage 用于存储图片数据
//    UIImage *image1 = [UIImage imageNamed:@"back_on_black"]; //back_on_black.png  png可以省略
//    UIImage *image2 = [UIImage imageNamed:@"back_on.png"];
//    [button setImage:image1 forState:UIControlStateNormal];
//    [button setImage:image2 forState:UIControlStateHighlighted];
//title与image 二者只能取一个

UIImage *image1 = [UIImage imageNamed:@"back_on_black"]; //back_on_black.png  png可以省略
UIImage *image2 = [UIImage imageNamed:@"back_on.png"];
[button setBackgroundImage:image1 forState:UIControlStateNormal];
[button setBackgroundImage:image2 forState:UIControlStateHighlighted];

button.titleLabel.font = [UIFont systemFontOfSize:14];

//    [button setTitle:@"选中了" forState:UIControlStateSelected];
//    //设置是否选中状态
//    button.selected = YES;

//设置按钮是否为警用状态
//    button.enabled = NO;

//是否响应触摸事件
button.userInteractionEnabled = NO;

[self.window addSubview:button];
}

- (void)buttonAction:(UIButton *)button {
NSLog(@"按钮被点击了");
}

#pragma mark - UITextField
/*________________________________UITextField________________________________________*/

- (void)initTextField {
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 130, 200, 30)];
//设置输入框的边框显示样式
textField.borderStyle = UITextBorderStyleLine;
[self.window addSubview:textField];

//设置输入框中文字的字体
textField.font = [UIFont systemFontOfSize:20];
//设置文字的颜色
textField.textColor = [UIColor redColor];

//设置输入框中的文本
//    textField.text = @"test";

//设置首字母是否自动大写
textField.autocapitalizationType = UITextAutocapitalizationTypeNone;

//输入框为空时，显示的提示文字
textField.placeholder = @"请输入邮箱地址";

//清除按钮模式
textField.clearButtonMode = UITextFieldViewModeWhileEditing;

//设置文本的显示位置：居中、居左、居右
textField.textAlignment = NSTextAlignmentCenter;

//设置键盘上return键的显示样式
textField.returnKeyType = UIReturnKeySearch;

//是否安全输入
textField.secureTextEntry = YES;

//设置键盘类型,UIKeyboardTypeNumberPad 数字键盘
//    textField.keyboardType = UIKeyboardTypePhonePad;

[textField release];

textField.delegate = self;

//弹出键盘
//    [textField becomeFirstResponder];

}

#pragma mark - UITextField delegate
//将要编辑：键盘弹出之前调用的
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {

NSLog(@"将要开始编辑");

return YES;

}

//已经开始编辑,键盘弹出之后调用
- (void)textFieldDidBeginEditing:(UITextField *)textField {
NSLog(@"已经开始编辑");
}

//return按钮被点击时调用
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
NSLog(@"textFieldShouldReturn");

//收起键盘
[textField resignFirstResponder];

return YES;
}

//将要结束编辑, 收起键盘时调用
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField {
NSLog(@"textFieldShouldEndEditing 结束编辑");
return YES;
}

#pragma mark - UIImageView
/*________________________________UIImageView________________________________________*/

- (void)_initImageView {

UIImage *image = [UIImage imageNamed:@"scene1.jpg"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
//设置高亮状态显示的图片
imageView.highlightedImage = [UIImage imageNamed:@"scene2.jpg"];

imageView.frame = CGRectMake(10, 200, 100, 100);

//    imageView.highlighted = YES;

//设置内容模式，可以防止图片比例被拉伸
//    imageView.contentMode = UIViewContentModeScaleAspectFit;

UIImage *image1 = [UIImage imageNamed:@"scene1.jpg"];
UIImage *image2 = [UIImage imageNamed:@"scene2.jpg"];
UIImage *image3 = [UIImage imageNamed:@"scene3.jpg"];
UIImage *image4 = [UIImage imageNamed:@"scene4.jpg"];
UIImage *image5 = [UIImage imageNamed:@"scene5.jpg"];
NSArray *images = [NSArray arrayWithObjects:image1,image2,image3,image4,image5, nil];

//动画播放图片的集合
imageView.animationImages = images;
//动画持续时间
imageView.animationDuration = 1;

//开始播放动画
[imageView startAnimating];

//停止动画
[imageView stopAnimating];

//图片视图的userInteractionEnabled 触摸事件默认是关闭的
//imageView.userInteractionEnabled = NO;

[self.window addSubview:imageView];
}

#pragma mark - UISlider
/*____________________________UISlider____________________________________*/
- (void)_initSlider {

//UISlider 的高度是固定的
UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(10, 320, 200, 50)];
//添加滑动的事件,UIControlEventValueChanged:值被修改的事件
[slider addTarget:self action:@selector(sliderAction:)
forControlEvents:UIControlEventValueChanged];

//设置滑动最大数值
slider.maximumValue = 100;
//设置滑动最小数值
slider.minimumValue = 50;

UIImage *image = [UIImage imageNamed:@"com_slider_min_l-Decoded.png"];

//设置图片拉伸点的位置
UIImage *image2 = [image stretchableImageWithLeftCapWidth:3 topCapHeight:0];

//设置滑动条左边的颜色
//[slider setMinimumTrackImage:image2 forState:UIControlStateNormal];
//设置滑动条左边的颜色
[slider setMinimumTrackTintColor:[UIColor redColor]];
[slider setMaximumTrackTintColor:[UIColor blueColor]];

//修改滑动按钮图片
[slider setThumbImage:[UIImage imageNamed:@"com_thumb_max_n-Decoded.png"]
forState:UIControlStateNormal];
[slider setThumbImage:[UIImage imageNamed:@"com_thumb_max_h-Decoded.png"]
forState:UIControlStateHighlighted];

[self.window addSubview:slider];

[slider release];

}

- (void)sliderAction:(UISlider *)slider {

NSLog(@"%f",slider.value);

}

#pragma mark - UISwitch
/*____________________________UISlider____________________________________*/

- (void)_initSwitch {
//UISwitch的宽、高是固定的
UISwitch *switchUI = [[UISwitch alloc] initWithFrame:CGRectMake(10, 360, 0, 0)];

switchUI.on = YES;

[switchUI addTarget:self action:@selector(switchAction:)
forControlEvents:UIControlEventValueChanged];

//设置开、关，并且添加动画效果
[switchUI setOn:NO animated:YES];

[self.window addSubview:switchUI];
[switchUI release];

}

- (void)switchAction:(UISwitch *)switchUI {

if (switchUI.on) {
NSLog(@"开");
} else {
NSLog(@"关");
}

}

#pragma mark - UISegmentedControl
/*____________________________UISegmentedControl____________________________________*/
- (void)_initSegmented {

NSArray *titles = @[@"电影",@"电视剧",@"综艺"];
UISegmentedControl *sc = [[UISegmentedControl alloc] initWithItems:titles];

sc.segmentedControlStyle = UISegmentedControlStyleBar;

sc.frame = CGRectMake(10, 400, 200, 30);

//不能这样修改选项按钮的背景颜色
//    sc.backgroundColor = [UIColor redColor];
//设置选项按钮的颜色
sc.tintColor = [UIColor redColor];

//设置选择项的索引
sc.selectedSegmentIndex = 2;

//添加事件
[sc addTarget:self action:@selector(segmentAction:)
forControlEvents:UIControlEventValueChanged];

[self.window addSubview:sc];
}

- (void)segmentAction:(UISegmentedControl *)segment {
if (segment.selectedSegmentIndex == 0) {
NSLog(@"切换电影");
} else if(segment.selectedSegmentIndex == 1) {
NSLog(@"切换电视剧");
} else if(segment.selectedSegmentIndex == 2) {
NSLog(@"切换综艺");
}
}

#pragma mark - UIActivityIndicatorView
/*_____________________________UIActivityIndicatorView_____________________________*/
- (void)_initActivityIndicator {
//风火轮圆半径是固定的
UIActivityIndicatorView *activity = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
activity.backgroundColor = [UIColor blueColor];
activity.frame = CGRectMake(10, 430, 0, 0);

//开始转动
[activity startAnimating];

//停止转动，并且隐藏
//    [activity stopAnimating];

[self.window addSubview:activity];
}

#pragma mark - UIPageControl
/*_____________________________UIPageControl_____________________________*/
- (void)_initPageControll {
UIPageControl *pageCtrl = [[UIPageControl alloc] initWithFrame:CGRectMake(10, 440, 100, 20)];
pageCtrl.backgroundColor = [UIColor grayColor];

//总页数
pageCtrl.numberOfPages = 3;

//当前选中的页数
pageCtrl.currentPage = 2;

[self.window addSubview:pageCtrl];

[pageCtrl release];

}

#pragma mark - UIAlertView
/*_____________________________UIAlertView_____________________________*/

- (void)_initAerltView {
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:@"弹出Alert" forState:UIControlStateNormal];
[button addTarget:self action:@selector(showAlert) forControlEvents:UIControlEventTouchUpInside];
button.frame = CGRectMake(100, 430, 100, 30);
[self.window addSubview:button];
}

- (void)showAlert {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"警告"
message:@"密码输入错误"
delegate:self
cancelButtonTitle:@"取消"
otherButtonTitles:@"确定",/*@"按钮1",@"按钮2",*/ nil];
[alertView show];
[alertView release];
}

#pragma mark - UIAlertView delegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) {
NSLog(@"取消");
} else if(buttonIndex == 1) {
NSLog(@"确定");
}
}

#pragma mark - UIActionSheet
/*_____________________________UIActionSheet_____________________________*/

- (void)_initActionSheet {

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:@"弹出Sheet" forState:UIControlStateNormal];
[button addTarget:self action:@selector(showSheet) forControlEvents:UIControlEventTouchUpInside];
button.frame = CGRectMake(200, 430, 100, 30);
[self.window addSubview:button];
}

- (void)showSheet {
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"提示"
delegate:self cancelButtonTitle:@"取消"
destructiveButtonTitle:@"确定"
otherButtonTitles:@"按钮1",@"按钮2", nil];
[actionSheet showInView:self.window];
[actionSheet release];
}

#pragma mark UIActionSheet delegate
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
NSLog(@"%d",buttonIndex);
}

#pragma mark - UIProgressView
/*_____________________________UIProgressView_____________________________*/
- (void)_initProgress {
UIProgressView *progress = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar];
progress.frame = CGRectMake(10, 460, 200, 0);
//进度值,范围(0~1)
progress.progress = 0.5;
progress.tag = 201;

//设置已加载的进度条颜色，左边的进度条
[progress setProgressTintColor:[UIColor redColor]];
//设置未加载的进度条颜色，右边的进度条
progress.trackTintColor = [UIColor greenColor];

[self.window addSubview:progress];

[NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(progressAction:) userInfo:nil repeats:YES];
}

- (void)progressAction:(NSTimer *)timer {
UIProgressView *progress = (UIProgressView *)[self.window viewWithTag:201];
progress.progress+=0.01;

if (progress.progress == 1) {
[timer invalidate];
}
}

#pragma mark - UIToolbar
/*_____________________________UIToolbar_____________________________*/
- (void)_initToolbar {

UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(100, 200, 200, 49)];
toolbar.barStyle = UIBarStyleDefault;
[self.window addSubview:toolbar];
[toolbar release];

//创建工具栏上的按钮
/*
UIBarButtonItem 的x\y坐标UIToolbar自动会调整，不用设定
*/
UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(itemAction)];

UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:@"学院" style:UIBarButtonItemStyleBordered target:self action:@selector(itemAction)];
//    [[UIBarButtonItem alloc] initWithImage:<#(UIImage *)#> style:<#(UIBarButtonItemStyle)#> target:<#(id)#> action:<#(SEL)#>];

UIBarButtonItem *item3 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
item3.width = 20;

UIButton *button = [UIButton buttonWithType:UIButtonTypeContactAdd];
//    button.frame = CGRectMake(0, 0, 20, 20);
[button addTarget:self action:@selector(itemAction) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *item4 = [[UIBarButtonItem alloc] initWithCustomView:button];

NSArray *items = [NSArray arrayWithObjects:item1,item2,item3,item4, nil];
//    [toolbar setItems:items];
toolbar.items = items;
}

- (void)itemAction {
NSLog(@"item");
}