//
// MyUITextFieldViewController.m
// 2020082901Test
//
// Created by 张亚楠 on 2021/1/25.
// Copyright © 2021 张亚楠. All rights reserved.
//
#import "MyUITextFieldViewController.h"
#import <Masonry.h>
@interface MyUITextFieldViewController ()<UITextFieldDelegate>
@property (nonatomic, strong, readwrite) UITextField *textField;
@property (nonatomic, strong, readwrite) UITextField *centerTextField;
@property (nonatomic, strong, readwrite) UITextField *bottomTextField;
@property (nonatomic, copy) NSMutableArray *textFieldArray;
@end
@implementation MyUITextFieldViewController
- (NSMutableArray *)textFieldArray {
if (_textFieldArray == nil) {
NSMutableArray *mArray = [NSMutableArray array];
[mArray addObject:self.textField];
[mArray addObject:self.centerTextField];
[mArray addObject:self.bottomTextField];
_textFieldArray = mArray;
}
return _textFieldArray;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.textField = [[UITextField alloc]init];
self.centerTextField = [[UITextField alloc]init];
self.bottomTextField = [[UITextField alloc]init];
[self.view addSubview:self.textField];
[self.view addSubview:self.centerTextField];
[self.view addSubview:self.bottomTextField];
[self.textField mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.view).offset(120);
make.left.mas_equalTo(20);
make.right.mas_equalTo(-20);
make.height.mas_equalTo(40);
}];
[self.centerTextField mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.view).offset(400);
make.left.mas_equalTo(20);
make.right.mas_equalTo(-20);
make.height.mas_equalTo(40);
}];
[self.bottomTextField mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.view).offset(600);
make.left.mas_equalTo(20);
make.right.mas_equalTo(-20);
make.height.mas_equalTo(40);
}];
[self initTextField:self.textField leftImage: [UIImage imageNamed:@"蓝色我的图标"]];
[self initTextField:self.centerTextField leftImage: [UIImage imageNamed:@"蓝色我的图标"]];
[self initTextField:self.bottomTextField leftImage: [UIImage imageNamed:@"蓝色我的图标"]];
//设置returnKeyType，可以直接跳转到下一个填空
for (int i = 0; i < self.textFieldArray.count; i++) {
UITextField *textField = self.textFieldArray[i];
textField.delegate = self;
textField.tag = i;
textField.returnKeyType = i == (self.textFieldArray.count - 1) ? UIReturnKeyDefault : UIReturnKeyNext;
}
//添加键盘监听事件
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(yjd_keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
}
- (void)yjd_keyboardWillShow:(NSNotification *)notifi
{
//获取键盘的高度
NSDictionary *userInfo = [notifi userInfo];
NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];
CGFloat keyboardHeight = [aValue CGRectValue].size.height;//键盘的高度
//获取键盘动画时间
CGFloat time = [notifi.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
//获取当前第一响应状态的输入框
UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
UIView *view = [keyWindow performSelector:@selector(firstResponder)];
//输入框在当前屏幕的坐标y
CGFloat maxY = CGRectGetMaxY([view convertRect:view.bounds toView:[[[UIApplication sharedApplication] delegate] window]]);
//判断是非遮挡当前输入框，小于0遮挡，大于或等于0没有
CGFloat map = [UIScreen mainScreen].bounds.size.height - maxY - keyboardHeight;
NSLog(@"map = %f", map);
if (map < 0) {
[UIView animateWithDuration:time animations:^{
self.view.transform = CGAffineTransformTranslate(self.view.transform, 0, map);
}];
}
}
//点击键盘return
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
if (textField.returnKeyType == UIReturnKeyNext) {
NSLog(@"textFieldShouldReturn");
UITextField *nextTextField = (UITextField *)[self.view viewWithTag:textField.tag + 1];
[textField endEditing:YES];
[nextTextField becomeFirstResponder];
} else {
NSLog(@"textFieldShouldReturn===transform");
[self endEdit];
}
return YES;
}
//隐藏键盘
- (void)endEdit {
[self.view endEditing:YES];
self.view.transform = CGAffineTransformIdentity;
}
//点击其他位置隐藏键盘
- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[self endEdit];
}
- (void)dealloc
{
//移除通知
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
}
//初始化UITextField
- (void)initTextField:(UITextField *)textField leftImage:(UIImage *)leftImage{
//设置边框
textField.layer.borderColor = [UIColor grayColor].CGColor;
textField.layer.borderWidth = 1.0;
textField.layer.cornerRadius = 10;
//设置内边距、paddingTop、paddingLeft、paddingBottom、paddingRight
// [textField setValue:[NSNumber numberWithInt:20] forKey:@"paddingLeft"];
UIView *leftView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 40, 40)];
//设置左侧“返回”
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 8, 25, 24)];
imageView.image =leftImage;
[leftView addSubview:imageView];
textField.leftView = leftView;
//设置显示模式
textField.leftViewMode = UITextFieldViewModeAlways;
textField.clearButtonMode = UITextFieldViewModeWhileEditing;
//设置代理
textField.delegate = self;
}
@end
//初始化textfield并设置位置及大小
UITextField *text = [[UITextField alloc]initWithFrame:CGRectMake(20, 20, 130, 30)];
//设置边框样式，只有设置了才会显示边框样式
text.borderStyle = UITextBorderStyleRoundedRect;
typedef enum {
UITextBorderStyleNone,
UITextBorderStyleLine,
UITextBorderStyleBezel,
UITextBorderStyleRoundedRect
} UITextBorderStyle;
//设置输入框的背景颜色，此时设置为白色 如果使用了自定义的背景图片边框会被忽略掉
text.backgroundColor = [UIColor whiteColor];
//设置背景
text.background = [UIImage imageNamed:@"dd.png"];
//设置背景
text.disabledBackground = [UIImage imageNamed:@"cc.png"];
//当输入框没有内容时，水印提示 提示内容为password
text.placeholder = @"password";
//设置输入框内容的字体样式和大小
text.font = [UIFont fontWithName:@"Arial" size:20.0f];
//设置字体颜色
text.textColor = [UIColor redColor];
//输入框中是否有个叉号，在什么时候显示，用于一次性删除输入框中的内容
text.clearButtonMode = UITextFieldViewModeAlways;
typedef enum {
UITextFieldViewModeNever, 重不出现
UITextFieldViewModeWhileEditing, 编辑时出现
UITextFieldViewModeUnlessEditing, 除了编辑外都出现
UITextFieldViewModeAlways 一直出现
} UITextFieldViewMode;
//输入框中一开始就有的文字
text.text = @"一开始就在输入框的文字";
//每输入一个字符就变成点 用语密码输入
text.secureTextEntry = YES;
//是否纠错
text.autocorrectionType = UITextAutocorrectionTypeNo;
typedef enum {
UITextAutocorrectionTypeDefault, 默认
UITextAutocorrectionTypeNo, 不自动纠错
UITextAutocorrectionTypeYes, 自动纠错
} UITextAutocorrectionType;
//再次编辑就清空
text.clearsOnBeginEditing = YES;
//内容对齐方式
text.textAlignment = UITextAlignmentLeft;
//内容的垂直对齐方式 UITextField继承自UIControl,此类中有一个属性contentVerticalAlignment
text.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
//设置为YES时文本会自动缩小以适应文本窗口大小.默认是保持原来大小,而让长文本滚动
textFied.adjustsFontSizeToFitWidth = YES;
//设置自动缩小显示的最小字体大小
text.minimumFontSize = 20;
//设置键盘的样式
text.keyboardType = UIKeyboardTypeNumberPad;
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＋＊＃字符
UIKeyboardTypeURL, URL键盘，支持.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
UIKeyboardTypeEmailAddress, 用于输入电子 邮件地址的键盘
UIKeyboardTypeDecimalPad, 数字键盘 有数字和小数点
UIKeyboardTypeTwitter, 优化的键盘，方便输入@、#字符
UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable,
} UIKeyboardType;
//首字母是否大写
text.autocapitalizationType = UITextAutocapitalizationTypeNone;
typedef enum {
UITextAutocapitalizationTypeNone, 不自动大写
UITextAutocapitalizationTypeWords, 单词首字母大写
UITextAutocapitalizationTypeSentences, 句子的首字母大写
UITextAutocapitalizationTypeAllCharacters, 所有字母都大写
} UITextAutocapitalizationType;
//return键变成什么键
text.returnKeyType =UIReturnKeyDone;
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，用语搜索
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
UIReturnKeyYahoo,
标有Yahoo的蓝色按钮
UIReturnKeyEmergencyCall, 紧急呼叫按钮
} UIReturnKeyType;
//键盘外观
textView.keyboardAppearance=UIKeyboardAppearanceDefault；
typedef enum {
UIKeyboardAppearanceDefault， 默认外观，浅灰色
UIKeyboardAppearanceAlert， 深灰 石墨色
} UIReturnKeyType;
//设置代理 用于实现协议
text.delegate = self;
//把textfield加到视图中
[self.window addSubview:text];
//最右侧加图片是以下代码 左侧类似
UIImageView *image=[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"right.png"]];
text.rightView=image;
text.rightViewMode = UITextFieldViewModeAlways;
typedef enum {
UITextFieldViewModeNever,
UITextFieldViewModeWhileEditing,
UITextFieldViewModeUnlessEditing,
UITextFieldViewModeAlways
} UITextFieldViewMode;
//按return键键盘往下收 becomeFirstResponder
类要采用UITextFieldDelegate协议
text.delegate = self; 声明text的代理是我，我会去实现把键盘往下收的方法 这个方法在UITextFieldDelegate里所以我们要采用UITextFieldDelegate这个协议
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[text resignFirstResponder]; //主要是[receiver resignFirstResponder]在哪调用就能把receiver对应的键盘往下收
return YES;
}
重写绘制行为
除了UITextField对象的风格选项，你还可以定制化UITextField对象，为他添加许多不同的重写方法，来改变文本字段的显示行为。这些方法都会返回一个CGRect结构，制定了文本字段每个部件的边界范围。以下方法都可以重写。
– textRectForBounds: //重写来重置文字区域
– drawTextInRect:
//改变绘文字属性.重写时调用super可以按默认图形属性绘制,若自己完全重写绘制函数，就不用调用super了.
– placeholderRectForBounds:
//重写来重置占位符区域
– drawPlaceholderInRect:
//重写改变绘制占位符属性.重写时调用super可以按默认图形属性绘制,若自己完全重写绘制函数，就不用调用super了.
– borderRectForBounds:
//重写来重置边缘区域
– editingRectForBounds:
//重写来重置编辑区域
– clearButtonRectForBounds:
//重写来重置clearButton位置,改变size可能导致button的图片失真
– leftViewRectForBounds:
– rightViewRectForBounds:
委托方法
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
//返回一个BOOL值，指定是否循序文本字段开始编辑
return YES;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField{
//开始编辑时触发，文本字段将成为first responder
}
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField{
//返回BOOL值，指定是否允许文本字段结束编辑，当编辑结束，文本字段会让出first responder
//要想在用户结束编辑时阻止文本字段消失，可以返回NO
//这对一些文本字段必须始终保持活跃状态的程序很有用，比如即时消息
return NO;
}
- (BOOL)textField:(UITextField*)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
//当用户使用自动更正功能，把输入的文字修改为推荐的文字时，就会调用这个方法。
//这对于想要加入撤销选项的应用程序特别有用
//可以跟踪字段内所做的最后一次修改，也可以对所有编辑做日志记录,用作审计用途。
//要防止文字被改变可以返回NO
//这个方法的参数中有一个NSRange对象，指明了被改变文字的位置，建议修改的文本也在其中
return YES;
}
- (BOOL)textFieldShouldClear:(UITextField *)textField{
//返回一个BOOL值指明是否允许根据用户请求清除内容
//可以设置在特定条件下才允许清除内容
return YES;
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
//返回一个BOOL值，指明是否允许在按下回车键时结束编辑
//如果允许要调用resignFirstResponder 方法，这回导致结束编辑，而键盘会被收起[textField resignFirstResponder];
//查一下resign这个单词的意思就明白这个方法了
return YES;
}
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