iOS鍵盤事件實現、控制

時間  2019-11-17
標籤 ios 鍵盤 事件 實現 控制 欄目 iOS 简体版
原文   原文鏈接

記錄於2013/6/26:
 
一.點擊鍵盤上的「Done」按鈕關閉鍵盤
1.視圖控制器實現UITextFieldDelegate協議
2.設置文本框屬性
     textField.returnKeyType = UIReturnKeyDone;
   textField.delegate=self;
 
3. 重寫協議方法
 - (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textFieldresignFirstResponder];
// the user pressed the "Done" button, so dismiss the keyboard
returnYES;
}
 
二.點擊鍵盤上的「Next」按鈕實現文本框焦點跳轉
1.視圖控制器實現UITextFieldDelegate協議
2.設置文本框屬性
     tx_username.returnKeyType = UIReturnKeyNext;
   tx_username.delegate =self;
 
 3.重寫協議方法
 - (BOOL)textFieldShouldReturn:(UITextField *)textField
{
   if([tx_username isFirstResponder]) {
        [tx_email becomeFirstResponder];
    }elseif([tx_email isFirstResponder]) {
        [tx_password becomeFirstResponder];
    } elseif([tx_password isFirstResponder]) {
        [tx_conPassword becomeFirstResponder];
    } elseif([tx_conPassword isFirstResponder]) {
        [self performSelector:@selector(userRegister)];//tx_conPassword指定了<span style="font-family: Menlo; font-size: 11px;">UIReturnKeyJoin類型後調用的方法</span></span>
    }
    returnYES;
}
 
 
UIScrollView頁面下點擊TextField鍵盤事件： 
不能改變scrollView的frame，得改變contentOffSet調整。
（1）
#pragma mark
#pragma mark - Textfield delegate
//增長手勢  點擊輸入框之外區域降下鍵盤
-(void)RegisterViewAddGest:(UIImageView *)view {
    view.userInteractionEnabled = YES;
    //單擊事件
    UITapGestureRecognizer *taprecognizer;
    taprecognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(RegisterKeyDown:)];
    taprecognizer.numberOfTapsRequired = 1;
    [view addGestureRecognizer:taprecognizer];
    [taprecognizer release];
}
//鍵盤降低的時候
-(void)RegisterKeyDown:(UITapGestureRecognizer *)taprecognizer{
    DebugLog(@"點擊背景鍵盤降低");
    if (taprecognizer.numberOfTapsRequired == 1) {
        [self.nameTextField resignFirstResponder];
        [self.phoneTextField resignFirstResponder];
        [self.addressTextField resignFirstResponder];
        [self.goodsTextField resignFirstResponder];
        [self.numberTextField resignFirstResponder];
        [self.timeTextField resignFirstResponder];
        [self.attendTextField resignFirstResponder];
       
        NSTimeInterval animationDuration = 0.30f;
        [UIView beginAnimations:@"ResizeForKeyboard"context:nil];
        [UIView setAnimationDuration:animationDuration];
       
        if (self.buyNowScrollView.contentOffset.y >= self.buyNowScrollView.contentSize.height - self.buyNowScrollView.frame.size.height) {
            self.buyNowScrollView.contentOffset = CGPointMake(0, self.buyNowScrollView.contentSize.height - self.buyNowScrollView.frame.size.height);
        }
        [UIViewcommitAnimations];
       
    }
}
//輸入框return的時候
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
    if ([textField isEqual:self.nameTextField]) {
        [self.phoneTextFieldbecomeFirstResponder];
    }elseif ([textField isEqual:self.phoneTextField]) {
        [self.addressTextFieldbecomeFirstResponder];
    }elseif ([textField isEqual:self.addressTextField]) {
        [self.goodsTextFieldbecomeFirstResponder];
    }elseif ([textField isEqual:self.goodsTextField]) {
        [self.numberTextFieldbecomeFirstResponder];
    }elseif ([textField isEqual:self.numberTextField]) {
        [self.timeTextFieldbecomeFirstResponder];
    }elseif ([textField isEqual:self.timeTextField]) {
        [self.attendTextFieldbecomeFirstResponder];
    }else {
        DebugLog(@"輸入框return的時候");
        [textField resignFirstResponder];
       
        NSTimeInterval animationDuration = 0.30f;
        [UIViewbeginAnimations:@"ResizeForKeyboard"context:nil];
        [UIViewsetAnimationDuration:animationDuration];
 
        self.buyNowScrollView.contentOffset = CGPointMake(0, self.buyNowScrollView.contentSize.height - self.buyNowScrollView.frame.size.height);
       
        [UIViewcommitAnimations];
    }
   
    returnYES;
}
//輸入框彈出的時候
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    DebugLog(@"鍵盤彈出");
CGRect frame = textField.frame;
int offset = frame.origin.y + 70 - (self.view.frame.size.height - 216.0);//鍵盤高度216
   
NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations:@"ResizeForKeyBoard"context:nil];
[UIView setAnimationDuration:animationDuration];
   
if(offset > 0)
{
        self.buyNowScrollView.contentOffset = CGPointMake(0, offset + 10);
}else{
        self.buyNowScrollView.contentOffset = CGPointMake(0, 0);
    }
   
[UIView commitAnimations];
}
 
 
 
（2）改寫（1）的,更加穩定適用了   暫時仍是很完美的
裏面的都是textField嵌入在scroll裏面的使用
#pragma mark - UITextFieldDelegate
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
    //401爲普通會員帳號 402爲普通會員密碼 403爲普通會員密碼確認 404爲普通會員暱稱
    //411爲髮型師會員帳號 412爲髮型師會員密碼 413爲髮型師會員密碼確認 414爲髮型師會員姓名 415爲髮型師會員手機
    //鍵盤高度216
    if(textField.tag <= 404){
        if ([textField isEqual:self.commonUserText]) {
            [self.commonPassTextbecomeFirstResponder];
        }elseif ([textField isEqual:self.commonPassText]){
            [self.commonRepeatPassTextbecomeFirstResponder];
        }elseif ([textField isEqual:self.commonRepeatPassText]){
            [self.commonNickTextbecomeFirstResponder];
        }else{
            for (UIView *subView inself.commonScrollView.subviews) {
                if ([subView isKindOfClass:[UITextFieldclass]]) {
                    [subView resignFirstResponder];
                }
            }
           
            if (self.commonScrollView.contentSize.height - self.commonScrollView.contentOffset.y < self.commonScrollView.frame.size.height) {
                [self.commonScrollViewsetContentOffset:CGPointMake(0, self.commonScrollView.contentSize.height - self.commonScrollView.frame.size.height) animated:YES];
            }
        }
    }else{
        if ([textField isEqual:self.barberUserText]) {
            [self.barberPassTextbecomeFirstResponder];
        }elseif ([textField isEqual:self.barberPassText]){
            [self.barberRepeatPassTextbecomeFirstResponder];
        }elseif ([textField isEqual:self.barberRepeatPassText]){
            [self.barberNickTextbecomeFirstResponder];
        }elseif ([textField isEqual:self.barberNickText]){
            [self.barberTelphoneTextbecomeFirstResponder];
        }else{
            for (UIView *subView inself.barberScrollView.subviews) {
                if ([subView isKindOfClass:[UITextFieldclass]]) {
                    [subView resignFirstResponder];
                }
            }
           
            //scroll的內容高度 - scroll的contentOffSet高度 < scroll的frane高度
            if (self.barberScrollView.contentSize.height - self.barberScrollView.contentOffset.y < self.barberScrollView.frame.size.height) {
                [self.barberScrollViewsetContentOffset:CGPointMake(0, self.barberScrollView.contentSize.height - self.barberScrollView.frame.size.height) animated:YES];
            }
        }
    }
    returnYES;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField{
    //401爲普通會員帳號 402爲普通會員密碼 403爲普通會員密碼確認 404爲普通會員暱稱
    //411爲髮型師會員帳號 412爲髮型師會員密碼 413爲髮型師會員密碼確認 414爲髮型師會員姓名 415爲髮型師會員手機
    //鍵盤高度216
    CGRect frame = textField.frame;
    int offset;
    if(textField.tag <= 404){
        //scroll的y座標 + textField在Scroll上的y座標 + textField高度 - 除鍵盤高度外屏幕高度
        offset = frame.origin.y + 110 + 30 + 6 - (SCREEN_HEIGHT - 252);
        NSTimeInterval animationDuration = 0.30f;
        [UIViewbeginAnimations:@"ResizeForKeyBoard"context:nil];
        [UIViewsetAnimationDuration:animationDuration];
        if(offset > 0)
        {
            [self.commonScrollViewsetContentOffset:CGPointMake(0, offset) animated:YES];
        }else{
            [self.commonScrollViewsetContentOffset:CGPointMake(0, 0) animated:YES];
        }
        [UIViewcommitAnimations];
    }else {
        NSLog(@"%f",SCREEN_HEIGHT);
        offset = frame.origin.y + 146 - (SCREEN_HEIGHT - 252);
       
        if(offset > 0) 
        {
            [self.barberScrollViewsetContentOffset:CGPointMake(0, frame.origin.y + 146 - (SCREEN_HEIGHT - 252)) animated:YES];
        }else{
            [self.barberScrollViewsetContentOffset:CGPointMake(0, 0) animated:YES];
        }
    }
}
- (void)textFieldDidEndEditing:(UITextField *)textField{
   
    //scroll的內容高度 - scroll的contentOffSet高度 < scroll的frane高度
    if (self.commonScrollView.contentSize.height - self.commonScrollView.contentOffset.y < self.commonScrollView.frame.size.height) {
        [self.commonScrollViewsetContentOffset:CGPointMake(0, self.commonScrollView.contentSize.height - self.commonScrollView.frame.size.height) animated:YES];
    }
   
    if (self.barberScrollView.contentSize.height - self.barberScrollView.contentOffset.y < self.barberScrollView.frame.size.height) {
        [self.barberScrollViewsetContentOffset:CGPointMake(0, self.barberScrollView.contentSize.height - self.barberScrollView.frame.size.height) animated:YES];
    }
   
}
 
 
 
 
 
 
UIView下的界面移動避免鍵盤遮蓋方法：
 
- (void)keyboardWillShow:(NSNotification *)noti
{
//鍵盤輸入的界面調整
//鍵盤的高度
float height = 216.0;
CGRect frame = self.view.frame;
frame.size = CGSizeMake(frame.size.width, frame.size.height - height);
[UIView beginAnimations:@"Curl"context:nil];//動畫開始
[UIView setAnimationDuration:0.30];
[UIView setAnimationDelegate:self];
[self.view setFrame:frame];
[UIView commitAnimations];
}
 
 
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
// When the user presses return, take focus away from the text field so that the keyboard is dismissed.
NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations:@"ResizeForKeyboard" context:nil];
[UIView setAnimationDuration:animationDuration];
CGRect rect = CGRectMake(0.0f, 0.0f, self.view.frame.size.width, self.view.frame.size.height);
self.view.frame = rect;
[UIView commitAnimations];
[textField resignFirstResponder];
return YES;
}
 
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
CGRect frame = textField.frame;
int offset = frame.origin.y + 70 - (self.view.frame.size.height - 216.0); //鍵盤高度216 ,向上提多少在這裏改
NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations:@"ResizeForKeyBoard" context:nil];
[UIView setAnimationDuration:animationDuration];
float width = self.view.frame.size.width;
float height = self.view.frame.size.height;
if(offset > 0)
{
CGRect rect = CGRectMake(0.0f, -offset,width,height);
self.view.frame = rect;
}
[UIView commitAnimations];
}
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