iOS实现聊天输入框

概述iOS实现聊天输入框

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#import "VIEwController.h"@interface VIEwController ()<UITextFIEldDelegate>{ UITextFIEld *_commentTextFIEld;}@end@implementation VIEwController- (voID)vIEwDIDLoad {    [super vIEwDIDLoad];    //键盘通知    [[NSNotificationCenter defaultCenter] addobserver:self selector:@selector(keyboarDWasChange:) name:UIKeyboarDWillChangeFrameNotification object:nil];    //实例化输入框    _commentTextFIEld = [[UITextFIEld alloc] initWithFrame:CGRectMake(0,[UIScreen mainScreen].bounds.size.height-35,[UIScreen mainScreen].bounds.size.wIDth,32)];    [[NSNotificationCenter defaultCenter]addobserver:self selector:@selector (textFIEldChange:)     name:UITextFIEldTextDIDChangeNotification object:_commentTextFIEld];    _commentTextFIEld.borderStyle = UITextborderStyleRoundedRect;    _commentTextFIEld.returnKeyType = UIReturnKeyDone;    _commentTextFIEld.enablesReturnKeyautomatically = YES;    _commentTextFIEld.placeholder = @"请输入  王木木  点击完成";    _commentTextFIEld.backgroundcolor = [UIcolor whitecolor];    _commentTextFIEld.delegate = self;    [self.vIEw addSubvIEw:_commentTextFIEld];    self.vIEw.backgroundcolor = [UIcolor bluecolor];}- (voID)btn{    NSLog(@"dsfa");}#pragma mark - 键盘 改变通知 d键盘-(voID)keyboarDWasChange:(NSNotification *)notification{    NSDictionary *info = [notification userInfo];    if ([[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].origin.y != [UIScreen mainScreen].bounds.size.height) {                _commentTextFIEld.frame = CGRectMake(0,[[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].origin.y-45,45);            }else {        _commentTextFIEld.frame = CGRectMake(0,[UIScreen mainScreen].bounds.size.height - 45,45);    }}//点击界面vIEw 触发  收键盘- (voID)@R_502_5033@Began:(NSSet *)@R_502_5033@ withEvent:(UIEvent *)event{    [_commentTextFIEld resignFirstResponder];    _commentTextFIEld.frame = CGRectMake(0,45);}-(voID)textFIEldChange:(NSNotification *)notification{    UITextFIEld *textFIEld=[notification object];    Nsstring *lang = [textFIEld.textinputMode primaryLanguage]; // 键盘输入模式    if ([lang 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 = [textFIEld markedTextRange];        //获取高亮部分        UITextposition *position = [textFIEld 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 ([textFIEld.text isEqualToString:@"王木木"]) {                    UIAlertVIEw *ale = [[UIAlertVIEw alloc]initWithTitle:@"我爱你" message:nil delegate:nil cancelbuttonTitle:@"谢谢" otherbuttonTitles: nil];                    [ale show];                }        }            }    }- (voID)dIDReceiveMemoryWarning {    [super dIDReceiveMemoryWarning];    // dispose of any resources that can be recreated.}@end

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