您好,登錄后才能下訂單哦!
iOS中鍵盤彈出會遮擋輸入框如何解決?很多新手對此不是很清楚,為了幫助大家解決這個難題,下面小編將為大家詳細講解,有這方面需求的人可以來學習下,希望你能有所收獲。
解決思路:
監聽鍵盤出現和消失的狀態,當鍵盤出現時,當前視圖上移,當輸入完成收起鍵盤時,視圖回到初始狀態。
難點:視圖向上平移的距離
原理都差不多,oc版參考代碼:
self.phoneInput = [UITextField new]; self.phoneInput.placeholder = @"請輸入..."; [self.view addSubview:self.phoneInput]; ///鍵盤彈出 處理遮擋問題 - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil]; } - (void)keyboardWillShow:(NSNotification *)notification { //獲取處于焦點中的view NSArray *textFields = @[self.phoneInput]; UIView *focusView = nil; for (UITextField *view in textFields) { if ([view isFirstResponder]) { focusView = view; break; } } if (focusView) { //獲取鍵盤彈出的時間 double duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; //獲取鍵盤上端Y坐標 CGFloat keyboardY = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue].origin.y; //獲取輸入框下端相對于window的Y坐標 CGRect rect = [focusView convertRect:focusView.bounds toView:[[[UIApplication sharedApplication] delegate] window]]; CGPoint tmp = rect.origin; CGFloat inputBoxY = tmp.y + focusView.frame.size.height; //計算二者差值 CGFloat ty = keyboardY- inputBoxY; NSLog(@"position keyboard: %f, inputbox: %f, ty: %f", keyboardY, inputBoxY, ty); //差值小于0,做平移變換 [UIView animateWithDuration:duration animations:^{ if (ty < 0) { self.view.transform = CGAffineTransformMakeTranslation(0, ty); } }]; } } - (void)keyboardWillHide:(NSNotification *)notification { //獲取鍵盤彈出的時間 double duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; //還原 [UIView animateWithDuration:duration animations:^{ self.view.transform = CGAffineTransformMakeTranslation(0, 0); }]; } ///<UITextFieldDelegate> ///UITextFieldDelegate編輯完成,視圖恢復原狀 -(void)textFieldDidEndEditing:(UITextField *)textField { self.view.frame =CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.width,[[UIScreen mainScreen] bounds].size.height); }
看完上述內容是否對您有幫助呢?如果還想對相關知識有進一步的了解或閱讀更多相關文章,請關注億速云行業資訊頻道,感謝您對億速云的支持。
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。