IOS基礎控制項--UIImageView、UITextField

標籤：

UIImageView:
1 - (void)viewDidLoad {2     [super viewDidLoad];3     4     UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(SCREENWIDTH / 2 - 46, 66, 92, 84)];5     imgView.image = [UIImage imageNamed:@"logo"];6     [self.view addSubview:imgView];7     8 }

UITextField:

- (void)viewDidLoad {    [super viewDidLoad];        UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width / 2 - 100, [UIScreen mainScreen].bounds.size.height / 2 - 20, 200, 40)];        textField.placeholder = @"請輸入使用者名稱";        textField.textAlignment = NSTextAlignmentCenter;//置中    //Image路徑    NSString *path = [[NSBundle mainBundle] pathForResource:@"登入" ofType:@"png"];    //文本域添加背景Image    textField.background = [UIImage imageWithContentsOfFile:path];        [self.view addSubview:textField];    }

UITextFieldDelegate 協議

 1 #import "ViewController.h" 2  3 @interface ViewController () 4  5 @end 6  7 @implementation ViewController 8  9 - (void)viewDidLoad {10     [super viewDidLoad];11     12     UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width / 2 - 100, [UIScreen mainScreen].bounds.size.height - 100, 200, 40)];13     14     textField.placeholder = @"請輸入使用者名稱";15     16     textField.textAlignment = NSTextAlignmentCenter;//置中17 //    //Image路徑18 //    NSString *path = [[NSBundle mainBundle] pathForResource:@"登入" ofType:@"png"];19 //    //文本域添加背景Image20 //    textField.background = [UIImage imageWithContentsOfFile:path];21     22     [self.view addSubview:textField];23     24     textField.delegate = self;25     26 }27 28 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField//開始編輯，隨著整體往上移動29 {30     [UIView animateWithDuration:0.3 animations:^{self.view.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y - 220, self.view.frame.size.width, self.view.frame.size.height);}];31     32     return YES;33 }34 35 //- (void)textFieldDidBeginEditing:(UITextField *)textField36 //{37 //    38 //}39 40 - (BOOL)textFieldShouldEndEditing:(UITextField *)textField41 {42     return YES;43 }44 - (void)textFieldDidEndEditing:(UITextField *)textField45 {46 47 }48 - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string49 {50     NSLog(@"%@", string);//每輸入一個字元就列印一個，取出輸入字元51     52     return YES;53 }54 - (BOOL)textFieldShouldClear:(UITextField *)textField55 {56     57     58     return YES;59 }60 - (BOOL)textFieldShouldReturn:(UITextField *)textField61 {62 //    NSString *str = textField.text;63 //    NSLog(@"%@", str);//擷取輸入字串64     [textField resignFirstResponder];//return鍵盤收縮65     [UIView animateWithDuration:0.1 animations:^{self.view.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y + 220, self.view.frame.size.width, self.view.frame.size.height);}];//隨著鍵盤收縮，整體往下移動66     67     return YES;68 }69 70 - (void)didReceiveMemoryWarning {71     [super didReceiveMemoryWarning];72     // Dispose of any resources that can be recreated.73 }74 75 @end

 UITextViewDelegate協議

 1 - (void)viewDidLoad  2 { 3     [super viewDidLoad]; 4     UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(20, 30, [UIScreen mainScreen].bounds.size.width - 40, [UIScreen mainScreen].bounds.size.height - 300)]; 5     textView.text = @"雖然autoresizing已經過時，但我們還是有必要瞭解一下的。autoResizing是蘋果早期的螢幕適配的解決辦法，iOS6之前完全可以勝任，因為蘋果手機只有3.5寸的螢幕，在加上手機app很少支援橫屏，所以iOS開發人員基本不用怎麼適配布局，所"; 6     textView.font = [UIFont systemFontOfSize:20]; 7 //    textView.userInteractionEnabled = NO;//禁止使用者移動，不常用 8     textView.textColor = [UIColor redColor]; 9     10     [self.view addSubview:textView];11 //    textView.delegate = self;//執行<UITextViewDelegate>協議代理方法12     13 }

 

IOS基礎控制項--UIImageView、UITextField