键盘输入完成按钮

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- (void)addKeyboardNSNotification {
   
    UIToolbar *topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)];
   
    //设置style
    [topView  setBarStyle:UIBarStyleBlack];
   
    //定义两个flexibleSpace的button，放在toolBar上，这样完成按钮就会在最右边
    UIBarButtonItem  *button1 =[[UIBarButtonItem  alloc]initWithBarButtonSystemItem:                                        UIBarButtonSystemItemFlexibleSpace target:self action:nil];
   
    UIBarButtonItem *button2 = [[UIBarButtonItem  alloc]initWithBarButtonSystemItem:                                        UIBarButtonSystemItemFlexibleSpace target:self action:nil];
   
    //定义完成按钮
    UIBarButtonItem  *doneButton = [[UIBarButtonItem alloc]initWithTitle:@"完成" style:UIBarButtonItemStyleDone target:self action:@selector(resignKeyboard)];
   
    //在toolBar上加上这些按钮
    NSArray  *buttonsArray = [NSArray arrayWithObjects:button1,button2,doneButton,nil];
   
    [topView setItems:buttonsArray];
   
    [self.user_field  setInputAccessoryView:topView];
    [self.psd_field setInputAccessoryView:topView];
   
}

//隐藏键盘
-(void)resignKeyboard {
    [self.user_field resignFirstResponder];
    [self.psd_field resignFirstResponder];
}

键盘输入完成按钮

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原文地址：http://www.cnblogs.com/tony0571/p/5612098.html