学习iphone时的部分小代码.docx

NSString 常用方法/lovekarri/articles/2380033.html 占位符格式/bl1988530/article/details/6617358textField 详略/UIKit框架支持8种风格键盘。/typedef enum / UIKeyboardTypeDefault, / 默认键盘：支持所有字符 / UIKeyboardTypeASCIICapable, / 支持ASCII的默认键盘 / UIKeyboardTypeNumbersAndPunctuation, / 标准电话键盘，支持+*#等符号 / UIKeyboardTypeURL, / URL键盘，有.com按钮；只支持URL字符 / UIKeyboardTypeNumberPad, /数字键盘 / UIKeyboardTypePhonePad, / 电话键盘 / UIKeyboardTypeNamePhonePad, / 电话键盘，也支持输入人名字 / UIKeyboardTypeEmailAddress, / 用于输入电子邮件地址的键盘 / UIKeyboardType; /用法/ textView.keyboardtype = UIKeyboardTypeNumberPad; /键盘外观/typedef enum / UIKeyboardAppearanceDefault, / 默认外观：浅灰色 / UIKeyboardAppearanceAlert, /深灰/石墨色 / UIKeyboardAppearance; IKeyboardAppearance;/用法/textView.keyboardAppearance=UIKeyboardAppearanceDefault; /回车键/typedef enum / UIReturnKeyDefault, /默认：灰色按钮，标有Return / UIReturnKeyGo, /标有Go的蓝色按钮 / UIReturnKeyGoogle, /标有Google的蓝色按钮，用于搜索 / UIReturnKeyJoin, /标有Join的蓝色按钮 / UIReturnKeyNext, /标有Next的蓝色按钮 / UIReturnKeyRoute, /标有Route的蓝色按钮 / UIReturnKeySearch, /标有Search的蓝色按钮 / UIReturnKeySend, /标有Send的蓝色按钮 / UIReturnKeyYahoo, /标有Yahoo!的蓝色按钮，用于搜索 / UIReturnKeyDone, /标有Done的蓝色按钮 / UIReturnKeyEmergencyCall, /紧急呼叫按钮 / UIReturnKeyType; /用法/textView.returnKeyType=UIReturnKeyGo; /自动大写/typedef enum / UITextAutocapitalizationTypeNone, /不自动大写 / UITextAutocapitalizationTypeWords, /单词首字母大写 / UITextAutocapitalizationTypeSentences, /句子首字母大写 / UITextAutocapitalizationTypeAllCharacters, /所有字母大写 / UITextAutocapitalizationType; /用法/textField.autocapitalizationType = UITextAutocapitalizationTypeWords; /自动更正/typedef enum / UITextAutocorrectionTypeDefault,/默认 / UITextAutocorrectionTypeNo,/不自动更正 / UITextAutocorrectionTypeYes,/自动更正 / UITextAutocorrectionType; /用法/textField.autocorrectionType = UITextAutocorrectionTypeYes; /安全文本输入/textView.secureTextEntry=YES; /UITextField * newTextFiled= UITextField alloc initWithFrame:CGRectMake(50, 50, 200, 30 );/1. 设置键盘的风格/newTextFiled.keyboardType=UIKeyboardTypeDefault; /默认/2. 设置键盘外观/newTextFiled.keyboardAppearance=UIKeyboardAppearanceDefault; /默认浅灰色颜色/3. 回车键/newTextFiled.returnKeyType=UIReturnKeyGo; /回车 /4.自动大写/newTextFiled.autocapitalizationType=UITextAutocapitalizationTypeNone; /默认/5.自动更正/newTextFiled.autocorrectionType=UITextAutocorrectionTypeYes; /自动更正/6.安全文本输入（密码）/newTextFiled.secureTextEntry=NO;/7.设置按钮边框/newTextFiled.borderStyle=UITextBorderStyleRoundedRect;/8.设置textFiled提示信息/newTextFiled.placeholder=hello world;/委托方法（遮挡键盘）/TextFiled：/- (void)textFieldDidBeginEditing:(UITextField *)textField/ /开始编辑时触发，文本字段将成为first responder/委托方法/TextFiled：/- (void)textFieldDidEndEditing:(UITextField *)textField/ /开始编辑时触发，文本字段将成为first responder/-(void)textFieldDidBeginEditing:(UITextField *)textField UIView beginAnimations:nil context:NULL; UIView setAnimationDuration:0.3; UIView setAnimationDelegate:self; /设定动画开始时的状态为目前画面上的样子 UIView setAnimationBeginsFromCurrentState:YES; if(textField.frame.origin.y210) textField.frame = CGRectMake(textField.frame.origin.x, textField.frame.origin.y - 210, textField.frame.size.width, textField.frame.size.height); UIView commitAnimations; /当textField编辑结束时调用的方法-(void)textFieldDidEndEditing:(UITextField *)textField UIView beginAnimations:nil context:NULL; UIView setAnimationDuration:0.3; UIView setAnimationDelegate:self; /设定动画开始时的状态为目前画面上的样子 UIView setAnimationBeginsFromCurrentState:YES; textField.frame = CGRectMake(textField.frame.origin.x, textField.frame.origin.y + 210, textField.frame.size.width, textField.frame.size.height); UIView commitAnimations; textField addTarget:self action:selector(backgroundTap:) forControlEvents:UIControlEventTouchDown;/1.在UIView中/UITouch 的主要方法- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event if (!self.view isExclusiveTouch) newTextFiled resignFirstResponder; 2.在UIControl中/点击屏幕空白view时触发的事件 （Touch Down,Did End On Exit）- (IBAction)backgroundTap:(id)sender; - (IBAction)textFiledReturnEditing:(id)sender; /用户当前正在与之交互的控件( First Responder )textField resignFirstResponder;/通知文本失去第一响应者状态/ return键 收键盘- (IBAction)closekeyBord:(id)sender sender resignFirstResponder;/ picker / 定义property (retain, nonatomic) IBOutlet UIPickerView *typePicker;- (IBAction)showPicker CGRect screen = self.view.frame; CGSize pickersize = self.typePicker sizeThatFits:CGSizeZero; CGRect size = CGRectMake(0, screen.origin.y + screen.size.height - datePicker.frame.size.height, pickersize.width, pickersize.height); self.datePicker.frame = size; self.view addSubview:datePicker;- (IBAction)closePicker CGRect screen = self.view.frame; CGSize pickersize = self.datePicker sizeThatFits:CGSizeZero; CGRect size = CGRectMake(0, screen.origin.y + screen.size.height + datePicker.frame.size.height, pickersize.width, pickersize.height); self.datePicker.frame = size; datePicker removeFromSuperview;/ picker动画CGRect screen = self.view.frame; CGSize pickerSize = self.typePicker sizeThatFits:CGSizeZero; /set animations start position and end position CGRect size1 = CGRectMake(0.0, screen.origin.y+screen.size.height+pickerSize.height, pickerSize.width,pickerSize.height); CGRect size2 = CGRectMake(0.0, screen.origin.y+screen.size.height-pickerSize.height, pickerSize.width,pickerSize.height); self.typePicker.frame = size1; /animation begin UIView beginAnimations:nil context:NULL; /set animations speed UIView setAnimationDuration:0.3; UIView setAnimationDelegate:self; UIView setAnimationBeginsFromCurrentState:YES; self.typePicker.frame = size2; /show the picker self.view addSubview:typePicker; /animation end UIView commitAnimations;/自定义picker/ returns the number of columns to display.- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView return 2;/ returns the # of rows in each component.- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component if (component=0) return cityArray count; else return nameArray count; - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component if (component=0) return cityArray objectAtIndex:row; else return nameArray objectAtIndex:row; / 返回首页-(IBAction)backTop self.navigationController popToViewController:self.navigationController.viewControllers objectAtIndex:0 animated:YES;/ 返回按钮 UIBarButtonItem *backButton = UIBarButtonItem alloc initWithTitle:返回 style:UIBarButtonItemStyleBordered target:nil action:nil; self.navigationItem setBackBarButtonItem:backButton;/ ta