iOS_UITextField 基本操作

基本操作

UITextField *userNameTextField = [[UITextField alloc] init];
userNameTextField.frame = CGRectMake(30, 100, 220, 50);
[self.window addSubview:userNameTextField];
[userNameTextField release];

// 设置样式
userNameTextField.borderStyle = UITextBorderStyleRoundedRect;
userNameTextField.placeholder = @"Enter your name";
userNameTextField.text = @"OUTLAN";

userNameTextField.clearButtonMode = UITextFieldViewModeWhileEditing; // 设置右边删除按钮出现时间

UILabel *leftLable = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
leftLable.text = @"N";
// 设置左右视图的显示时间
userNameTextField.leftView = leftLable;
userNameTextField.leftViewMode = UITextFieldViewModeAlways;
[leftLable release];

userNameTextField.enabled = YES; // 设置是否允许输入
userNameTextField.clearsOnBeginEditing = NO; // 输入时清空
userNameTextField.secureTextEntry = NO; // 呈现圆点，一般用于输入密码

userNameTextField.keyboardAppearance = UIKeyboardAppearanceDark; // 控制键盘颜色为黑
userNameTextField.keyboardType = UIKeyboardTypeEmailAddress; // 设置键盘样式
userNameTextField.returnKeyType = UIReturnKeySearch; // 设置return按键的样式

UIView *keyBoard = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 0, 300)];

keyBoard.backgroundColor = [UIColor greenColor];
//    userNameTextField.inputView = keyBoard; // 替换键盘
[keyBoard release];

UIView *inputAccessView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 0, 20)];
inputAccessView.backgroundColor = [UIColor yellowColor];
userNameTextField.inputAccessoryView = inputAccessView; // 辅助条
[inputAccessView release];

收回键盘

设置代理对象，通常为self

// 设置代理
textFiled.delegate = self;

当前类遵守协议

@interface AppDelegate : UIResponder <UIApplicationDelegate, UITextFieldDelegate>

实现协议方法

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
NSLog(@"点击了Return");
[textField resignFirstResponder]; // 放弃第一响应者 收回键盘
return YES;
}

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
NSLog(@"begining");
return YES;
}

- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
NSLog(@"ending");
return YES;
}