iOS鍵盤事件實現、控制
阿新 • • 發佈：2019-01-03
記錄於2013/6/26: 一.點選鍵盤上的“Done”按鈕關閉鍵盤 1.檢視控制器實現UITextFieldDelegate協議 2.設定文字框屬性 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.點選鍵盤上的“Next”按鈕實現文字框焦點跳轉 1.檢視控制器實現UITextFieldDelegate協議 2.設定文字框屬性 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型別後呼叫的方法</span></span> } returnYES; }
UIScrollView頁面下點選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 //增加手勢 點選輸入框以外區域降下鍵盤 -(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]; } //鍵盤下降的時候 -(void)RegisterKeyDown:(UITapGestureRecognizer *)taprecognizer{ DebugLog(@"點選背景鍵盤下降"); 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 暫時還是很完美的 裡面的都是textField嵌入在scroll裡面的使用 #pragma mark - UITextFieldDelegate - (BOOL)textFieldShouldReturn:(UITextField *)textField{ //401為普通會員賬號 402為普通會員密碼 403為普通會員密碼確認 404為普通會員暱稱 //411為髮型師會員賬號 412為髮型師會員密碼 413為髮型師會員密碼確認 414為髮型師會員姓名 415為髮型師會員手機 //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為普通會員賬號 402為普通會員密碼 403為普通會員密碼確認 404為普通會員暱稱 //411為髮型師會員賬號 412為髮型師會員密碼 413為髮型師會員密碼確認 414為髮型師會員姓名 415為髮型師會員手機 //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 - 除鍵盤高度外螢幕高度 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下的介面移動避免鍵盤遮蓋方法： - (void)keyboardWillShow:(NSNotification *)noti { //鍵盤輸入的介面調整 //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 ,向上提多少在這裡改 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]; }