iphone的简单控件

Button:自定义Button：UIButton *btn1=[UIButton buttonWithType:UIButtonTypeDetailDisclosure];[btn1 addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];[btn1 setFrame:CGRectMake(80, 60, 100, 60)];//[btn1 setTitle:@"Btn Press" forState:UIControlStateNormal];[self.view addSubview:btn1];self.detailDisclosure=btn1;自定义View：UIView *tempView=[[[UIView alloc]init]autorelease];self.view=tempView;self.view.backgroundColor=[UIColor whiteColor];[tempView release];自定义Label：UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(40,20, 200, 30)];label.backgroundColor=[UIColor redColor];=label;[self.view addSubview:label];[label release];TextField：键盘释放：-(BOOL)textFieldShouldReturn:(id)textField{[textField resignFirstResponder];return YES;}//-(IBAction)Tap:(id)sender{[NameField resignFirstResponder];[NumberField resignFirstResponder];}Slider 的方法运算：-(IBAction)sliderChange:(id)sender{UISlider *slider=(UISlider *)sender;int progressAsInt=(int)(slider.value+0.5);NSString *newText=[[NSStringalloc]initWithFormat:@"%d",progressAsInt];self.sliderLabel.text=newText;[newText release];}SegmentControl的方法：kSwitchesSegmentIndex=0-(IBAction)toggleControls:(id)sender{if([sender selectedSegmentIndex]==kSwitchesSegmentIndex){ LeftSwitch.hidden=NO;RightSwitch.hidden=NO;dosomethingButton.hidden=YES;}else{LeftSwitch.hidden=YES;RightSwitch.hidden=YES;dosomethingButton.hidden=NO;}}Switch的方法：-(IBAction)SwitchChanged:(id)sender{UISwitch *whichSwitch=(UISwitch *)sender;BOOL setting=whichSwitch.isOn;[LeftSwitch setOn:setting animated:YES];[RightSwitch setOn:setting animated:YES];}datepicker:@property(nonatomic,retain)NSDate *date;-(void)setDate:(NADate *)date animated:(BOOL)animated; 在标签上现实时间的方法代码：@property (nonatomic,retain)IBOutlet UIDatePicker *picker;@property (nonatomic,retain)IBOutlet UILabel *info;- (IBAction)getDateTime{NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];[dateFormatter setTimeStyle:NSDateFormatterShortStyle];[dateFormatter setDateStyle:NSDateFormatterMediumStyle];.text = [dateFormatter stringFromDate:self.picker.date];}custom pickers:2种协议：UIPickerViewDelegate && UIPickerViewDataSource1.UIPickerViewDelegate为了功能UIPickerView必须采取下列方法之一:- (NSString *)pickerView:(UIPickerView *)pickerViewtitleForRow:(NSInteger)rowforComponent:(NSInteger)component;- (UIView *)pickerView:(UIPickerView *)pickerViewviewForRow:(NSInteger)rowforComponent:(NSInteger)componentreusingView:(UIView *)view;第一个根本要求采取实施标题查找方法第二种方法实际上返回一个子视图，允许更多的定制。

2.UIPickerViewDataSource- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;- (NSInteger)pickerView:(UIPickerView *)pickerViewnumberOfRowsInComponent:(NSInteger)component;第一种方法告诉看法应该有多少个组件（车轮）第二种方法告诉多少行，每一个给定组件（车轮上的一些事情的选择器）ProgressBar:@property(nontoxic)float progress;方法内容：-(IBAction)update:(id)sender {if(sender == self.increase) {self.progressBar.progress += .01;}else if(sender == self.decrease) {self.progressBar.progress -= .01;}}ActivityIndicators:@property(nonatomic, retain) IBOutlet UIActivityIndicatorView *throbber; @property(nonatomic, retain) IBOutlet UIButton *start;@property(nonatomic, retain) IBOutlet UIButton *stop; UIActivityIndicatorView包括三种：1.方法启动throbber：- (void)startAnimating;2.方法停止throbber：- (void)stopAnimating;3.检查看它是否正在运行：- (BOOL)isAnimating;方法调用：- (IBAction)update:(id)sender{if(self.start == sender) {[self.throbber startAnimating];}else if(self.stop == sender) {[self.throbber stopAnimating];}}Images:UIImageViews用于在屏幕上显示的图像或动画图像序列1.如果你想要做的动画，你可以把一个循环数组UIImages通过以下方法..@property(nontoxic,copy)NSArray *animationImages; e these methods to start/stop animation...- (void)startAnimating;- (void)stopAnimating;3. You can also check the animation status using...- (BOOL)isAnimating;4.you can set the image in code using the image property...@property(nonatomic, retain) UIImage *image;//@property(nonatomic, retain) IBOutlet UIImageView *megaman;@property(nonatomic, retain) IBOutlet UISwitch *animate;方法：- (IBAction)change{if(self.animate.isOn) {[self.megaman startAnimating]; }else {[self.megaman stopAnimating];}}#pragma mark - View lifecycle- (void)viewDidLoad{[super viewDidLoad];UIImage *mega1=[UIImage imageNamed:@"megaman1.png"];UIImage *mega2=[UIImage imageNamed:@"megaman2.png"];UIImage *mega3=[UIImage imageNamed:@"megaman3.png"];self.megaman.animationDuration=.4;//时间间隔self.megaman.animationImages=[NSArray arrayWithObjects:mega1,mega2,mega3,mega2,nil]；//图片变换TabBar一、在总的view上显示点击的总次数和在总的view上显示-(IBAction)addBeer{NSLog(@"Adding beer");TabBarrAppDelegate *del = ((TabBarrAppDelegate *)([[UIApplication sharedApplication] delegate]));[del.cart addObject:@"Case of Beer"];del.cartTab.badgeValue = [NSString stringWithFormat:@"%d", [del.cart count]];}二、在AppDelegate上加总的第三个view时加上.h@property (nonatomic,retain)UITabBarItem *cartTab;@property (nonatomic,retain)NSMutableArray *cart;.mself.cartTab=viewController3.tabBarItem;self.cart=[NSMutableArray array];[self.window addSubview:self.tabBarController.view];三、如果不是继承的tableview而是自己拖到view上的要重新加载数据就是刷新-(void)viewWillAppear:(BOOL)animated{[self.tableview reloadData];[super viewWillAppear:YES];}四、获取文件路径、写进文件-(NSString *)getFilePath{NSArray *array=[NSArray arrayWithObjects:NSHomeDirectory(),@"Document",@"cart.plist", nil];NSString *path=[NSString pathWithComponents:array];return path;}或NSString *path=[[NSBundle mainBundle]pathForResource:@"Presidents"ofType:@"plist"];/- (void)applicationDidEnterBackground:(UIApplication *)application{/*Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.*/BOOL result = [self.cart writeToFile:[self getFilePath] atomically:YES];if (!result) {NSLog(@"Unable to save data");}//catr是总图上tableview的数组}tableView加载plist文件的代码- (void)viewDidLoad{// Do any additional setup after loading the view from its nib.NSString *path=[[NSBundle mainBundle]pathForResource:@"Presidents"ofType:@"plist"];//获取属性路径NSData *data;//数据对象用来存放未编码的归档文件NSKeyedUnarchiver *unarchiver;//实际存储归档文件的对象data=[[NSData alloc]initWithContentsOfFile:path];unarchiver=[[NSKeyedUnarchiver alloc]initForReadingWithData:data];NSMutableArray *array=[unarchiver decodeObjectForKey:@"Presidents"];//从归档文件中解码数组数据self.list=array;[unarchiver finishDecoding]; //结束解码过程[unarchiver release];[data release];[super viewDidLoad];}或- (void)viewDidLoad{[super viewDidLoad];NSString *path=[[NSBundle mainBundle]pathForResource:@"sortednames"ofType:@"plist"];NSDictionary *dict=[[NSDictionary alloc]initWithContentsOfFile:path];s=dict;[dict release];NSArray *array=[[names allKeys]sortedArrayUsingSelector:@selector(compare:)];self.keys=array;// Do any additional setup after loading the view, typically from a nib.}将值写入文件(plist文件)（在Appdelegate.m中）-(NSString *)getFilePath{NSArray *segments=[NSArrayarrayWithObjects:NSHomeDirectory(),@"Documents",@"person.plist"nil];return [NSString pathWithComponents:segments];}- (void)applicationDidEnterBackground:(UIApplication *)application{Person *person=[[[Person alloc]init]autorelease];person.firstName=self.viewController.firstName.text;stName=stName.text;person.age=[self.viewController.age.text intValue];NSLog(@"%@ %@ %d",person.firstName,stName,person.age);BOOL status=[NSKeyedArchiver archiveRootObject:person toFile:[self getFilePath]];if (!status) {NSLog(@"Error saving person");}}//或着BOOL result = [self.cart writeToFile:[self getFilePath] atomically:YES];if (!result) { ! NSLog(@"Unable to save data");- (void)applicationDidBecomeActive:(UIApplication *)application{Person *person=[NSKeyedUnarchiver unarchiveObjectWithFile:[self getFilePath]];if (person) {self.viewController.firstName.text=person.firstName;stName.text=stName;self.viewController.age.text=[NSString stringWithFormat:@"%d",person.age];}}在导航栏上加按钮（并且按钮是有方法的的）- (void)viewDidLoad{[super viewDidLoad];UIBarButtonItem *cancelButton=[[UIBarButtonItem alloc]initWithTitle:@"Cancel"style:UIBarButtonItemStylePlain target:self action:@selector(cancel:)];self.navigationItem.leftBarButtonItem=cancelButton;[cancelButton release];UIBarButtonItem *saveButton=[[UIBarButtonItem alloc]initWithTitle:@"Save"style:UIBarButtonItemStylePlain target:self action:@selector(cancel:)];self.navigationItem.rightBarButtonItem=saveButton;[saveButton release];}在点击某行cell是弹出警告框的代码- (void)tableView:(UITableView *)tableViewdidSelectRowAtIndexPath:(NSIndexPath *)indexPath{NSUInteger row = [indexPath row];NSString *rowValue = [listData objectAtIndex:row];NSString *message = [[NSString alloc] initWithFormat:@"You selected %@", rowValue];UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Row Selected!"message:messagedelegate:nilcancelButtonTitle:@"Yes I Did"otherButtonTitles:nil];[alert show];[message release];[alert release];}将值写入文件(txt文件)-(NSString *)getFilePath{NSArray *path=[NSArrayarrayWithObjects:NSHomeDirectory(),@"Documents",@"name.txt",nil];return [NSString pathWithComponents:path];}//将textfield的值放在name.txt中路径-(BOOL)textFieldShouldReturn:(UITextField *)textField{BOOL result=[Field.text writeToFile:[self getFilePath]atomically:YESencoding:NSASCIIStringEncodingerror:NULL];if (!result) {NSLog(@"Unable to write data");}[textField resignFirstResponder];return YES;}//写进name.txt文件或：[array writeToFile:[self dataFilePath] atomically:YES];- (void)viewWillAppear:(BOOL)animated{[super viewWillAppear:animated];NSString *data=[NSString stringWithContentsOfFile:[self getFilePath]encoding:NSASCIIStringEncoding error:NULL];if (data) {Field.text=data;}}//从name.txt文件中读取报警表（Alerts）-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{self.result.text=[NSString stringWithFormat:@"You selected:'%@'",[alertView buttonTitleAtIndex:buttonIndex]];}-(IBAction)buttonPress:(id)sender{if (sender==self.button1) {UIAlertView*alert=[[[UIAlertView alloc]initWithTitle:@"Error"message:@"Unable to reach server"delegate:nilcancelButtonTitle:@"OK"otherButtonTitles:nil]autorelease];[alert show];}else if(sender==self.button2){UIAlertView*alert=[[[UIAlertView alloc]initWithTitle:@"Submit Score"message:@"We'd like to submit your high score to the global scoreboard"delegate:selfcancelButtonTitle:@"Cancel"otherButtonTitles:@"OK",nil]autorelease];[alert show];}}警告表(Action Sheets)- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { self.result.text = [NSString stringWithFormat:@"You selected: '%@'", [actionSheet buttonTitleAtIndex:buttonIndex]];}-(IBAction)buttonPress:(id)sender{if (sender == self.button1) {UIActionSheet *sheet = [[[UIActionSheet alloc] initWithTitle:@"Send Picture To:"delegate:selfcancelButtonTitle:@"Cancel"destructiveButtonTitle:nilotherButtonTitles:@"Flickr", @"Picasa", @"Twitpic", nil] autorelease];[sheet showInView:self.view];}else if (sender == self.button2) {UIActionSheet *sheet = [[[UIActionSheet alloc] initWithTitle:nildelegate:selfcancelButtonTitle:@"Cancel"destructiveButtonTitle:@"Delete Photo"otherButtonTitles: nil] autorelease];[sheet showInView:self.view];}}模态表（Modal Views）- (IBAction)displaySecondary:(id)sender{if (sender==self.slide) {self.secondaryView.modalTransitionStyle=UIModalTransitionStyleCoverVertical;}else if(sender==self.flip){self.secondaryView.modalTransitionStyle=UIModalTransitionStyleFlipHorizontal;}else if(sender==self.fade){self.secondaryView.modalTransitionStyle=UIModalTransitionStyleCrossDissolve;}else if(sender==self.curl){self.secondaryView.modalTransitionStyle=UIModalTransitionStylePartialCurl;}[self presentModalViewController:self.secondaryView animated:YES];}//点击不同的button出现不同的效果-(IBAction)dismiss{[self dismissModalViewControllerAnimated:YES];}//点击第二张view上的button取消效果。