TextField 使用与方法总结

[code=language-objectivec] //1、
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(30, 100, 260, 40)];
//2、
//    textField.backgroundColor = [UIColor redColor];

//属性
//设置文字颜色：textColor
textField.textColor = [UIColor redColor];
//边框状态：borderStyle
/*
1、UITextBorderStyleRoundedRect   圆角
2、UITextBorderStyleLine          黑色直角边框
3、UITextBorderStyleBezel         灰色直角边框
4、UITextBorderStyleNone          无边框
*/
textField.borderStyle = UITextBorderStyleRoundedRect;
//文字水平对齐：textAlignment   默认左对齐
textField.textAlignment = NSTextAlignmentLeft;
//文字垂直对齐：contentVerticalAlignment    默认居中
textField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
//设置字号：font
textField.font = [UIFont systemFontOfSize:20.0];
//自适应文字大小:adjustsFontSizeToFitWidth
textField.adjustsFontSizeToFitWidth = YES;
//设置最小字号：minimumFontSize
textField.minimumFontSize = 20.0;
//默认文字：text
textField.text = @"hello zhaoliang";
//提示文字:placeholder
textField.placeholder = @"请输入账号";
//密文：secureTextEntry
textField.secureTextEntry = NO;
//输入框是否可用：enabled
textField.enabled = YES;
//return键的类型:returnKeyType
/*
1、UIReturnKeyDefault         return
2、UIReturnKeyDone            Done
3、UIReturnKeyEmergencyCall   EmergencyCall
4、UIReturnKeyGoogle=UIReturnKeyYahoo=UIReturnKeySearch   Search
5、UIReturnKeyJoin   Join
.
.
.
*/
textField.returnKeyType = UIReturnKeyJoin;
//键盘类型：keyboardType
/*
1、UIKeyboardTypeDefault   数字，符号，中英文
2、UIKeyboardTypeNumberPad   数字键盘
3、UIKeyboardTypeWebSearch  网址  .
4、UIKeyboardTypeURL     .com  /   .
5、UIKeyboardTypeEmailAddress   @  .
6、UIKeyboardTypeNumbersAndPunctuation   数字 符号
.
.
.
*/
textField.keyboardType = UIKeyboardTypeDefault;
//键盘颜色:keyboardAppearance
/*
1、UIKeyboardAppearanceDefault=UIKeyboardAppearanceLight  浅灰色
2、UIKeyboardAppearanceAlert=UIKeyboardAppearanceDark   深灰色
*/
textField.keyboardAppearance = UIKeyboardAppearanceDefault;
//背景图片：background    当边框状态为圆角时，背景图片无效
textField.background = [UIImage imageNamed:@"map.png"];
//一键清除按钮:clearButtonMode
/*
1、UITextFieldViewModeAlways         一直出现
2、UITextFieldViewModeNever          永不出现
3、UITextFieldViewModeWhileEditing   输入框编辑文字时出现，不编辑时消失
4、UITextFieldViewModeUnlessEditing  输入框编辑文字时消失，不编辑时出现
*/
textField.clearButtonMode = UITextFieldViewModeUnlessEditing;
//再次编辑是否清空之前的文字：clearsOnBeginEditing   YES：清空
textField.clearsOnBeginEditing = YES;
//是否自动大写：autocapitalizationType
/*
1、UITextAutocapitalizationTypeAllCharacters   所有字母都大写
2、UITextAutocapitalizationTypeNone    所有字母都不大写
3、UITextAutocapitalizationTypeSentences   每个句子的首字母大写
4、UITextAutocapitalizationTypeWords   每个单词的首字母大写
*/
textField.autocapitalizationType = UITextAutocapitalizationTypeWords;
//是否自动纠错：autocorrectionType
/*
1、UITextAutocorrectionTypeDefault   默认
2、UITextAutocorrectionTypeNo   不纠错
3、UITextAutocorrectionTypeYes   纠错
*/
textField.autocorrectionType = UITextAutocorrectionTypeYes;
//设置左视图:leftView
//设置位置无效
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
view.backgroundColor = [UIColor redColor];
textField.leftView = view;
//左视图出现状态:leftViewMode
textField.leftViewMode = UITextFieldViewModeAlways;
//设置右视图：rightView
UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
view2.backgroundColor = [UIColor yellowColor];
//    textField.rightView = view2;
//右视图出现状态:rightViewMode
//    textField.rightViewMode = UITextFieldViewModeAlways;

//不同的位置，不能用相同的view

//键盘上面的view:inputAccessoryView
UIView *view3 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
view3.backgroundColor = [UIColor purpleColor];
textField.inputAccessoryView = view3;

//获取输入框里面的文字:textField.text
NSString *str = textField.text;
NSLog(@"%@",str);

/**************!!!!!!delegate!!!!!!!*************/
textField.delegate = self;

[textField becomeFirstResponder];

//3、
[self.view addSubview:textField];

1.2、代理方法
#pragma mark - UITextFieldDelegate
//return键的方法
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
//输入框失去响应：键盘收回，光标消失
[textField resignFirstResponder];

//输入框开始响应：键盘出现，光标出现
//    [textField becomeFirstResponder];

return YES;
}
//一键删除按钮的方法
- (BOOL)textFieldShouldClear:(UITextField *)textField{
//返回YES：一键删除有效   返回NO：一键删除无效

if ([textField.text isEqualToString:@"123"]) {
return NO;
}
return YES;
}
//输入框是否可以开始编辑
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
return YES;
}
//输入框是否可以结束编辑   **
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField{
if (textField.text.length < 11) {
return NO;
}
return YES;
}
//光标出现就开始执行
- (void)textFieldDidBeginEditing:(UITextField *)textField{
NSLog(@"textFieldDidBeginEditing");
}
//光标消失就执行
- (void)textFieldDidEndEditing:(UITextField *)textField{
NSLog(@"textFieldDidEndEditing");
}