ios 开发的一些控件综合属性总结
坐标相关---------------------------
CGRect frame = CGRectMake(280, 12, 20, 20);
CGSize size=CGSizeMake(320,420);
CGPoint point=CGPointMake(30,60);
CGRect rect=[[UIScreen mainScreen] applicationFrame];
//获得屏幕可显示内容的最大显示区域（0，20，320，460）
//CGRect是结构体类型，不要用%@打印
CGRect screenRect=[self.view bounds];//整个屏幕大小CGRect rect=self.view.bounds;CGSize realsize = [str sizeWithFont:font constrainedToSize:CGSizeMake(250.0f, 1000.0f)
lineBreakMode:UILineBreakModeWordWrap];
//切页经典函数，根据给定的字体和大小范围，返回一个真实的大小
UIFont相关-----------------------
UIFont* font=[UIFont fontWithName:@"Arial" size:40.0f];//字体格式
UIFont *font = [UIFont systemFontOfSize:13];
NSArray* fontNArray=[UIFont familyNames];//familyNames返回系统所有的字体类型
label.text=(NSString*)font;
CGFloatoneLineHeigth=[@"a我W" sizeWithFont:font].height;
//取得一行高度,siezWithFont返回的是一个CGSIZE类型
UILabel相关-----------------------
UILabel* label=[[UILabel alloc]
initWithFrame:CGRectMake(0, 0, realSize.width, realSize.height)];
UILabel* label=[[UILabel alloc] initWithFrame:CGRectZero];//不指定大小的初始化
label.numberOfLines=0;//设置最大行数，超过指定行则截断用省略号表示，默认为1，为0表示不限制
label.numberOfLines=3//限制行数有三行
label.lineBreakMode=UILineBreakModeCharacterWrap;//设置折行方式
label.text=str;
label.textColor=[UIColor blueColor];
lable.textAlignment=UITextAlignmentCenter;//设置字体对齐方式
label.backgroundColor=[UIColor clearColor]; //设置label背景色
label.font=font;
label.frame=CGRectMake(0,0,1,1);
self.contentLabel=label;
int val=[label.text intValue];//NSString到 intValue的转换
UILabel* label=(UILabel*)[self.view viewWithTag:100];
//每一个viewController都有一个self.view，viewWithTag:100找出该
view上tag值为100的控件，返回值为UIView＊类型
[self.view addSubview:self.contentLabel];
[label addSubview:img]；
UIView相关--------------------
UIView *view=[[UIView alloc]initWithFrame:CGRectMake(3, 3, 300, 40)];
view.backgroundColor=[UIColor clearColor]; //设置view的背景色为透明色
for(UIView *subview in [cell.contentView subviews])//获取view的子视图
/ /UITabViewCell中的contentView包括textlabel和imageView
[subview removeFromSuperview];//从父视图中移除子视图
UIButton相关------------------------
UIButton *button;
button.frame=CGRectMake(280, 12, 20, 20);
button.tag=123
UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];
// UIButton的默认类型为自定义类型 UIButtonTypeCustom，此类型UIBUTTON没有图示，看不见，但是能感应事件常用来感应响应事件。因为默认是不可见，所以手动写的时候，一定要修改其类型。
[buttonsetTitle:@"Pre" forState:UIControlStateNormal];
//UIButton设置标题不是通过label.text而是用setTitle方法。很容易出错
button.alpha=0.5f;//设置透明
[button setBackgroundImage:[UIImageimageNamed:@"title.png"]
forState:UIControlStateNormal];//给buttton设置背景图片
[button
addTarget:self action:@selector(headerClick:)
forControlEvents:UIControlEventTouchUpInside];
//给控件手动增加响应动作
UITabBarItem----------------------
//UITabBarItem是导航视图下面的对多五个，的小方块
UITabBarItem *tabBar=[[UITabBarItem alloc]
initWithTitle:@"机票查询"
image:[UIImage imageNamed:@"near.png"]
tag:4];
//初始化UITabBarItem
UITabBarItem *tabBar5=[[UITabBarItem alloc]
initWithTabBarSystemItem:UITabBarSystemItemMoretag:5
tag:3];
//用系统给定的方式初始化initWithTabBarSystemItem:UITabBarSystemItemMore
UITabBarController -----------------------------
//导航下部就是UITabBarController
UITabBarController *tabBarController
tabBarController.viewControllers=allTabs;//allTabs为包含viewController的数组
tabBarController.selectedIndex=2 //指定开机默认为选中哪一个
UISearchBar相关-------------------
UISearchBar *sb=[[UISearchBar alloc]
initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 44.0f)]；//设置搜索框
self.searchBar.keyboardType=UIKeyboardTypeAlphabet;//键盘样式设置
self.searchBar.text
UIColor相关------------------------------
UIColor *color=[[UIColor alloc]
initWithPatternImage:[UIImage imageNamed:@"bg.jpg"]];
//UIImage到UIColor的转换,用图像做背景的很重要步骤
UIColor *color=[UIColor
colorWithRed:111/255 green:222/255 blue:333/255 alpha:1.0f];
//RGB颜色
UIColor *color=[UIColor clearColor]//透明色
读取文件------------------------------
//读取文本文件
[[NSBundle mainBundle] bundlePath]
NSString* path=[[NSBundle mainBundle]
pathForResource:@"1" ofType:@"txt"];
NSError* error;
NSString* contenString=[NSString
stringWithContentsOfFile:path
encoding:NSUTF8StringEncoding
error:&error];
if (nil==contenString) {
NSLog(@"error:%@", error);
return nil;
}
return contenString;
//读取plist xml文件
NSString *dataPath = [[NSBundle mainBundle]
pathForResource:@"Data" ofType:@"plist"];
self.data = [NSArray arrayWithContentsOfFile:dataPath];
//读取文件总结，是先用mainBundle获取路径，然后用xxxWithContentsOfFile
代理相关------------------------
<UITableViewDelegate, UITableViewDataSource>
<UIAlertViewDelegate>
<UITextFieldDelegate>
<UIPickerViewDelegate, UIPickerViewDataSource>
self.myTableView.delegate=self;
self.myTableView.dataSource=self;
if([delegate respondsToSelector:@selector(foo:withValue:)])
//判断delegate中是否实现了foo函数
self.searchDc.searchResultsDelegate=self;
self.searchDc.searchResultsDataSource=self;
[ptr performSelector:selPrintHello];
对话框相关-----------------------
-(void)alertView:(UIAlertView *)alertView
clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSLog(@"你按下的按钮的index为%d", buttonIndex);
//可以在此添加对话框触发的事件
}
UIAlertView* av=[[UIAlertView alloc]
initWithTitle:@"信息"
message:msg
delegate:self cancelButtonTitle:@"取消"
otherButtonTitles:@"确定", @"知道了",nil];
//点击所弹出的对话框
[av show];
[av release];
UITextField相关-------------------------
手动设置UITextField常见属性
UITextField * textFieldRounded = [[UITextField alloc] initWithFrame:CGRectMake(10, 200, 300, 50)];
UITextField* nameTextField;
UITextField* ageTextField;
-(BOOL)textFieldShouldReturn:(UITextField *)textField//点击return后执行此函数
{
[self.nameTextField resignFirstResponder];
//让它失去第一响应者，从而点击此按键后键盘消失并执行函数中的代码
NSLog(@"return key down");
return YES;
}
-(IBAction)touchView:(id)sender
{
NSLog(@"touchView");
[self.nameTextField resignFirstResponder];
[self.ageTextField resignFirstResponder];
}
textField.text=@"";
UIPickerView相关--------------------------
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
//确定有多少列
-(NSInteger)pickerView:(UIPickerView *)pickerView
numberOfRowsInComponent:(NSInteger)component
//每一列即每一个component有多少行
-(CGFloat)pickerView:(UIPickerView *)pickerView
widthForComponent:(NSInteger)component
//返回每一列的宽度
-(CGFloat)pickerView:(UIPickerView *)pickerView
rowHeightForComponent:(NSInteger)component
//设置每一行的高度
-(UIView*)pickerView:(UIPickerView *)pickerView
viewForRow:(NSInteger)row
forComponent:(NSInteger)componentreusingView:(UIView *)view
//返回具体某列某行的视图，在此函数中设置具体列中具体行
-(void)pickerView:(UIPickerView *)pickerView
didSelectRow:(NSInteger)row inComponent:(NSInteger)component
//当选众某单元格时调用的函数
int row0=[pickerView selectedRowInComponent:0];
//获取在哪个component中选中的哪行
UIView* view0=[pickerView viewForRow:row0 forComponent:0];
//在component中的row中的view
UILabel* label0=[view0 viewWithTag:200];
//找出view中tag值为200的label
UIDatePicker相关--------------------
UIDatePicker* datePicker;
[self.datePicker
addTarget:self
action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged];
//点击datepicker所触发事件
if(self.datePicker.superview)//datePicker有父视图说明此视图才显示
[self.datePicker removeFromSuperview];//将视图从其父视图移除
NSDateFormatter* dateFormatter=[[NSDateFormatter alloc]init];
//日期显示方式
[dateFormatter setDateStyle:NSDateFormatterShortStyle];
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
dateLabel.text=[dateFormatter stringFromDate:self.datePicker.date];
//在label上以NSDateFormatter显示
UISlider相关------------------
UISlider* slider=(UISlider*)sender;
int val=[slider value];//取出UISlider的值
UISearchDisplayController相关------------------
UISearchDisplayController *searchDc;//显示搜索结果
self.searchDc=[[[UISearchDisplayController alloc]
initWithSearchBar:self.searchBar contentsController:self] autorelease];
//初始化并关联searchBar和当前的UIViewControl
UIImageView相关-------------------------------------
UIImage *img1=[UIImage imageNamed:me? @"bubbleSelf.png":@"bubble.png"];
UIImageView *imgView=[[UIImageView alloc]initWithFrame:CGRectMake(2, 2, 30, 30)];
imgView.image=[UIImage imageNamed:@"right.png"];
UIImageView *imgView=[[UIImageView alloc]
initWithImage: [img stretchableImageWithLeftCapWidth:21
topCapHeight:14]];
//img stretchableImageWithLeftCapWidth:21 topCapHeight:14为设置四角的宽和高，图像四角不变开始拉伸
imgView.backgroundColor=[UIColor clearColor];
cell设置相关--------------------------
cell.tag
cell.textLabel.text=str;
cell.textLabel.textAlignment = UITextAlignmentRight
cell.accessoryType=UITableViewCellAccessoryDisclosureIndicator;
//设置cell访问的类型显示向右的箭头//accessory--附件Indicator--指示
cell.selectionStyle=UITableViewCellSelectionStyleBlue;//cell的颜色
cell.selectionStyle=UITableViewCellSelectionStyleGray
UITableViewCell* cell=[tableView
cellForRowAtIndexPath:indexPath];
//找到indexPath所对应的cell
cell.imageView.image=[UIImage imageNamed:@"logo.png"];
//cell中加入图像
修改cell背景的方法一
UILabel* label=[[UILabelalloc]
initWithFrame:CGRectMake(0.0f,0.0f,320.f, 44.0f)];
label.backgroundColor=[UIColorredColor];
[cell.contentViewaddSubview:label];
[cell.contentView addSubview:new]; [cell viewWithTag:100];
//取得cell上tag值为100的对象，可以是任何具有tag值的对象
UINavigationController相关-----------------------
UINavigationController *navController=[[UINavigationController alloc]
initWithRootViewController:rvc];
//创建一个当好控制器
self.window.rootViewController=navController;
//将一个对象加载到window
[self.navigationController.navigationBar addSubview:infoButton];//将按钮加到导航条
self.title=@"关于QQ";
//设置导航栏标题，等同于self.navigationContronller.title=@"关于QQ";
[self.navigationController pushViewController:chat animated:YES];
//即点击这一行的cell将进入chat界面，即将chat界面加入到导航中控制器中
[self.navigationController pushViewController:mvc animated:YES];
//运行 pushViewController:mvc
//将mvc放在栈的最顶上 controller切换用pushViewCOntroller
self.navigationItem.titleView=segmetControl;//UISegmentedControl *segmetControl;//将segmetControl加到导航条上
UIBarbuttonItem------------------
//该控件是导航上面左右侧的按钮,是一种按钮行控件不是view行控件
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc]
initWithTitle:@"编辑"
style:UIBarButtonItemStylePlain
target:self
action:@selector(beginEdit:)];
//UIButtonBar初始化 style:UIBarButtonItemStylePlain按钮的类型 target:self 添加位置action:@selector(beginEdit:)按下按钮后触发的事件
self.navigationItem.rightBarButtonItem=rightButton;//把UIBarButton添加到导航指定位置
UIBarButtonItem *leftButton = [[UIBarButtonItem alloc]i
nitWithBarButtonSystemItem: UIBarButtonSystemItemBookmarks
target:self
action:@selector(addBookMark:)];
//用系统自带的图形初始化UIBarButton如UIBarButtonSystemItemBookmarks
self.navigationItem.leftBarButtonItem=leftButton; //把UIBarButton添加到导航指定位置
UINavigationBar/UINavigationItem----------
UINavigationItem 是继承自 NSObject用来定制导航条上的项目
UINavigationBar 是继承自NSVIew是用来定制导航的属性
[self.navigationController.navigationBar addSubView:button];
动画相关-----------------------------
[UIView beginAnimations:@"animation" context:nil];//开始动画
[UIView setAnimationDuration:1];//动画持续时间
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];//动画切换方式
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft
forView:[self.view superview]
cache:NO];
//setAnimationTransition动画具体切换方式
[UIView commitAnimations];//确认动画的执行
//qq项目图片箭头
CGContextRef context = UIGraphicsGetCurrentContext();
[UIView beginAnimations:nil context:context];
[UIView setAnimationDuration:0.25f];
if (flag[section] == 0) {
img.transform = CGAffineTransformMakeRotation(-3.14/2);
} else {
img.transform = CGAffineTransformMakeRotation(3.14/2);
}
[UIView commitAnimations];
[button addSubview:img];
[self performSelector:@selector(myDeselect:) withObject:nil afterDelay:0.5f];//在0.5秒后执行myDeselect方法
键盘------------------
//键盘隐藏显示
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(keyboardShown:) name:UIKeyboardDidShowNotification object:nil];
//注册键盘显示事件
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(keyboardHidden:) name:UIKeyboardDidHideNotification object:nil];
//注册键盘隐藏事件
// NSNotificationCenter内部通知 self事件的观察者
-(void)keyboardShown:(NSNotification *)aNotification
NSDictionary *info=[aNotification userInfo];
NSValue *aValue=[info objectForKey:UIKeyboardFrameEndUserInfoKey];
CGSize keyboardSize=[aValue CGRectValue].size;
//得到键盘的大小
NSPredicate相关-----------------
NSPredicate *predicate=[NSPredicate
predicateWithFormat:@"SELF contains [cd] %",self.searchBar.text];
//self.searchBar.text取得搜索框的结果,为要找的数据
//[cd]中c不区分大小写,d不区分重音
NSArray *resule=[self.dataArray filteredArrayUsingPredicate:predicate];
//用谓词来过滤dataArray中的元素,返回一个过滤队列
//在这里搜索,把结果存在resultArray中