简单的封装了一个，免得麻烦直接初始化就可以用了 ，有其他需求该里面参数就行了
WJEasyInputTextView.h
// // WJEasyInputTextView.h // 键盘上的输入框 // // Created by apple on 15/6/23. // Copyright (c) 2015年 tqh. All rights reserved. // #import <UIKit/UIKit.h> /* * * 使用 直接初始化，也可以改属性 WJEasyInputTextView *wj = [[WJEasyInputTextView alloc]init]; wj.bgColor = [UIColor orangeColor]; wj.showLimitNum = YES; wj.font = [UIFont systemFontOfSize:18]; wj.limitNum = 13; [self.view addSubview:wj]; */ @interface WJEasyInputTextView : UIView @property (nonatomic,strong)UIColor *bgColor; // 背景色 @property (nonatomic,assign)BOOL showLimitNum; // 显示字数 @property (nonatomic,assign)NSInteger limitNum; // 限制字数 @property (nonatomic,strong)UIFont *font; // 文字大小 @end
WJEasyInputTextView.m
// // WJEasyInputTextView.m // 键盘上的输入框 // // Created by apple on 15/6/23. // Copyright (c) 2015年 tqh. All rights reserved. // #import " WJEasyInputTextView.h " @interface WJEasyInputTextView ()<UITextViewDelegate> { UIView *_bottomView; // 评论框 UITextView *_textView; // 输入框 UILabel *_textApl; // 字数 CGRect _rect; } @end @implementation WJEasyInputTextView - (instancetype)init { self = [super init]; if (self) { self.frame = CGRectMake( 0, CGRectGetHeight([UIScreen mainScreen].bounds)- 50, CGRectGetWidth([UIScreen mainScreen].bounds), 50); _rect = self.frame; [self initNotification]; [self AddtextFieldComments]; } return self; } #pragma mark - 初始化键盘监听 - ( void)initNotification { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil]; } #pragma mark - 初始化视图 - ( void)AddtextFieldComments { _bottomView = [[UIView alloc] initWithFrame:self.bounds]; _bottomView.backgroundColor = self.bgColor; _bottomView.userInteractionEnabled= YES; [self addSubview:_bottomView]; UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake( 0, 0, CGRectGetWidth(self.bounds), 0.5)]; lineView.backgroundColor = [UIColor colorWithWhite: 0.6 alpha: 0.3]; [_bottomView addSubview:lineView]; _textView = [[UITextView alloc] initWithFrame:CGRectMake( 15, 5, CGRectGetWidth(self.bounds) - 115, 40)]; _textView.layer.cornerRadius = 6; _textView.layer.borderWidth = 1; _textView. delegate = self; _textView.font = [UIFont systemFontOfSize: 13]; _textView.autocapitalizationType = UITextAutocapitalizationTypeNone; _textView.autocorrectionType = UITextAutocorrectionTypeNo; _textView.layer.borderColor = lineView.backgroundColor.CGColor; [_bottomView addSubview:_textView]; _textApl = [[UILabel alloc] init]; _textApl.frame = CGRectMake(CGRectGetMaxX(_textView.frame)- 37, 35, 30, 6); _textApl.textColor = [UIColor grayColor]; _textApl.textAlignment = NSTextAlignmentRight; _textApl.font = [UIFont systemFontOfSize: 8]; // _textApl.text = @"140"; [_bottomView addSubview:_textApl]; UIButton *plBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect]; plBtn.layer.borderWidth = 1; plBtn.backgroundColor = [UIColor whiteColor]; [plBtn setTitle: @" 发送 " forState:UIControlStateNormal]; [plBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; plBtn.layer.cornerRadius = 6; plBtn.layer.borderColor = lineView.backgroundColor.CGColor; plBtn.frame = CGRectMake(CGRectGetMaxX(_textView.frame) + 10, CGRectGetMinY(_textView.frame), 80, CGRectGetHeight(_textView.frame)); [plBtn addTarget:self action:@selector(pinglun) forControlEvents:UIControlEventTouchUpInside]; [_bottomView addSubview:plBtn]; } #pragma mark - get方法 - ( void)setBgColor:(UIColor *)bgColor { _bgColor = bgColor; _bottomView.backgroundColor = bgColor; } - ( void)setLimitNum:(NSInteger)limitNum { NSLog( @" %ld ",limitNum); _limitNum = limitNum; _textApl.text = [NSString stringWithFormat: @" %ld ",limitNum]; } - ( void)setShowLimitNum:(BOOL)showLimitNum { _showLimitNum = showLimitNum; if (showLimitNum) { _textApl.hidden = NO; } else { _textApl.hidden = YES; } } - ( void)setFont:(UIFont *)font { _font = font; _textView.font = font; } #pragma mark - 事件监听 - ( void)pinglun { NSLog( @" 发送 "); } - ( void)textViewDidChange:(UITextView *)textView { if (_showLimitNum) { NSString *toBeString = textView.text; NSArray *currentar = [UITextInputMode activeInputModes]; UITextInputMode *current = [currentar firstObject]; // 下面的方法是iOS7被废弃的，注释 // NSString *lang = [[UITextInputMode currentInputMode] primaryLanguage]; // 键盘输入模式 if ([current.primaryLanguage isEqualToString: @" zh-Hans "]) { // 简体中文输入，包括简体拼音，健体五笔，简体手写 UITextRange *selectedRange = [textView markedTextRange]; // 获取高亮部分 UITextPosition *position = [textView positionFromPosition:selectedRange.start offset: 0]; // 没有高亮选择的字，则对已输入的文字进行字数统计和限制 if (!position) { if (toBeString.length > _limitNum) { textView.text = [toBeString substringToIndex:_limitNum]; } } // 有高亮选择的字符串，则暂不对文字进行统计和限制 else{ } } // 中文输入法以外的直接对其统计限制即可，不考虑其他语种情况 else{ if (toBeString.length > _limitNum) { textView.text = [toBeString substringToIndex:_limitNum]; } } NSLog( @" %@ ",textView.text); } else { } } #pragma mark - 键盘监听 - ( void)keyboardWillShow:(NSNotification *)notification { // 得到键盘高度 NSDictionary *userInfo = [notification userInfo]; NSValue* aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey]; CGRect keyboardRect = [aValue CGRectValue]; // - 49 self.frame = CGRectMake( 0, CGRectGetHeight([UIScreen mainScreen].bounds) - keyboardRect.size.height - 50, CGRectGetWidth(_bottomView.frame), CGRectGetHeight(_bottomView.frame)); } - ( void)keyboardWillHide:(NSNotification *)notification { // -49 self.frame = _rect; } @end
效果图：