UIKit 框架之UITextField

//
//  ViewController.m
//  UITextField
//
//  Created by City--Online on 15/5/20.
//  Copyright (c) 2015年 XQB. All rights reserved.
//
 
#import "ViewController.h"
 
@interface ViewController ()<UITextFieldDelegate>
@property(nonatomic,strong) UIDatePicker *datePicker;
@property(nonatomic,strong) UITextField *textField;
@end
 
@implementation ViewController
 
- (void)viewDidLoad {
    [super viewDidLoad];
    _textField=[[UITextField alloc]initWithFrame:CGRectMake(10, 100, 200, 40)];
    //文本內容
    _textField.text=@"text";
     //設置Text樣式 具體參考:NSAttributedString.h
    NSMutableAttributedString *attributedString=[[NSMutableAttributedString alloc]initWithString:_textField.text];
    NSRange range=NSMakeRange(0, _textField.text.length);
    [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:20] range:range];
    [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:range];
    _textField.attributedText=attributedString;
    //設置文本顏色
    _textField.textColor=[UIColor blueColor];
    //設置字體大小
    _textField.font=[UIFont systemFontOfSize:30];
    //對齊方式 枚舉
    _textField.textAlignment=NSTextAlignmentLeft;
    //邊框樣式 枚舉
    _textField.borderStyle=UITextBorderStyleRoundedRect;
    //設置默認的Text的樣式
    _textField.defaultTextAttributes=@{NSForegroundColorAttributeName:[UIColor blackColor],NSUnderlineStyleAttributeName:@2};
    //text屬性為空時顯示
    _textField.placeholder=@"placeholder";
    //設置placeholder文本屬性
    _textField.attributedPlaceholder=_textField.attributedText;
    //成為焦點時文本內容清空
    _textField.clearsOnBeginEditing=YES;
    //根據寬度自動適應字體大小
    _textField.adjustsFontSizeToFitWidth=YES;
    //最小的字體大小
    _textField.minimumFontSize=12;
    //設置代理
    _textField.delegate=self;
//    //設置背景圖
//    textField.background=[UIImage imageNamed:@"1.jpg"];
//    //設置不可用時的背景圖 若background未設置則忽略
//    textField.disabledBackground=[UIImage imageNamed:@"2.jpg"];
     
    //是否可以更改字符屬性字典
    _textField.allowsEditingTextAttributes=YES;
    //屬性字典
    _textField.typingAttributes=_textField.defaultTextAttributes;
     
    //設置清除按鈕的顯示樣式
//    typedef NS_ENUM(NSInteger, UITextFieldViewMode) {
//        UITextFieldViewModeNever,
//        UITextFieldViewModeWhileEditing,
//        UITextFieldViewModeUnlessEditing,
//        UITextFieldViewModeAlways
//    };
    _textField.clearButtonMode=UITextFieldViewModeAlways;
     
    //左視圖
    UIView *leftView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 20, 40)];
    leftView.backgroundColor=[UIColor redColor];
    _textField.leftView=leftView;
    //設置左視圖也不顯示 需要設置leftViewMode
    _textField.leftViewMode=UITextFieldViewModeAlways;
     
    //右視圖   與左視圖一樣
    UIView *rightView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 20, 40)];
    rightView.backgroundColor=[UIColor blueColor];
    _textField.rightView=rightView;
    _textField.rightViewMode=UITextFieldViewModeAlways;
     
    //設置彈出視圖
    _textField.inputView=self.inputView;
    //設置彈出輔助視圖
    _textField.inputAccessoryView=self.inputAccessoryView;
     
    //設置是否允許再次編輯時在內容中間插入內容
    _textField.clearsOnInsertion=YES;
     
    //UITextFiled和 UITextView都遵循 UITextInputTraits協議，在UITextInputTraits協議中定義了設置鍵盤的屬性
     
    //鍵盤類型  枚舉
    _textField.keyboardType=UIKeyboardTypeNumbersAndPunctuation;
    //鍵盤Return鍵顯示的文本，默認為”Return”,其他可選擇的包括Go,Next,Done,Send,Google等
    _textField.returnKeyType=UIReturnKeyDone;
    //鍵盤外觀
    _textField.keyboardAppearance=UIKeyboardAppearanceLight;
    //文本大小寫樣式
    _textField.autocapitalizationType=UITextAutocapitalizationTypeWords;
    //是否自動更正
    _textField.autocorrectionType=UITextAutocorrectionTypeYes;
    //拼寫檢查設置
    _textField.spellCheckingType=UITextSpellCheckingTypeYes;
    //是否在無文本時禁用Return鍵，默認為NO。若為YES,則用戶至少輸入一個字符后Return鍵才被**
    _textField.enablesReturnKeyAutomatically=YES;
    //若輸入的是密碼，可設置此類型為YES,輸入字符時可顯示最后一個字符，其他字符顯示為點
    _textField.secureTextEntry=YES;
     
    [self.view addSubview:_textField];
     
}
//UITextFieldDelegate
//點擊輸入框時觸發的方法，返回YES則可以進入編輯狀態，NO則不能
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
    //return NO to disallow editing
    NSLog(@"點擊輸入框 textFieldShouldBeginEditing");
    return YES;
}
//開始編輯時調用的方法
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    NSLog(@"開始編輯 textFieldDidBeginEditing");
}
//將要結束編輯時調用的方法，返回YES則可以結束編輯狀態，NO則不能
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
    NSLog(@"將要結束編輯 textFieldShouldEndEditing");
    return YES;
}
//結束編輯調用的方法
- (void)textFieldDidEndEditing:(UITextField *)textField
{
     NSLog(@"結束編輯 textFieldDidEndEditing");
}
//輸入字符時調用的方法
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSLog(@"輸入字符結束編輯 shouldChangeCharactersInRange");
    return YES;
}
//點擊清除按鈕時調用的函數，返回YES則可以清除，點擊NO則不能清除
- (BOOL)textFieldShouldClear:(UITextField *)textField
{
    NSLog(@"點擊清除按鈕 textFieldShouldClear");
    return YES;
}
//點擊return鍵觸發的函數
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [_textField resignFirstResponder];
    NSLog(@"點擊return鍵 textFieldShouldReturn");
    return YES;
}
 
-(UIView *)inputView
{
    if (!_datePicker) {
        _datePicker=[[UIDatePicker alloc]init];
        _datePicker.datePickerMode=UIDatePickerModeDate;
        _datePicker.date=[NSDate date];
//        [_datePicker addTarget:self action:@selector(valueChanged) forControlEvents:UIControlEventValueChanged];
        return _datePicker;
    }
    return _datePicker;
     
}
-(UIView *)inputAccessoryView
{
    UIToolbar *toolBar=[[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];
    UIBarButtonItem *item=[[UIBarButtonItem alloc]initWithTitle:@"done" style:UIBarButtonItemStyleDone target:self action:@selector(done)];
    toolBar.items =[NSArray arrayWithObject:item];
    return toolBar;
     
}
 
-(void)valueChanged
{
    NSLog(@"valueChanged");
}
-(void)done
{
    [_textField resignFirstResponder];
    NSLog(@"%@",_datePicker.date);
}
 
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
 
@end
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