本文为大家分享了iOS键盘弹出遮挡输入框的解决方法，供大家参考，具体内容如下
问题：输入框被键盘遮挡
期望效果：输入框位于键盘上方
解决思路：
监听键盘出现和消失的状态，当键盘出现时，当前视图上移，当输入完成收起键盘时，视图回到初始状态。
难点：视图向上平移的距离
原理都差不多，oc版参考代码：
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self.phoneInput = [UITextField new]; self.phoneInput.placeholder = @"请输入..."; [self.view addSubview:self.phoneInput];///键盘弹出 处理遮挡问题- (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{ //获取处于焦点中的view NSArray *textFields = @[self.phoneInput]; UIView *focusView = nil; for (UITextField *view in textFields) { if ([view isFirstResponder]) { focusView = view; break; } } if (focusView) { //获取键盘弹出的时间 double duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; //获取键盘上端Y坐标 CGFloat keyboardY = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue].origin.y; //获取输入框下端相对于window的Y坐标 CGRect rect = [focusView convertRect:focusView.bounds toView:[[[UIApplication sharedApplication] delegate] window]]; CGPoint tmp = rect.origin; CGFloat inputBoxY = tmp.y + focusView.frame.size.height; //计算二者差值 CGFloat ty = keyboardY- inputBoxY; NSLog(@"position keyboard: %f, inputbox: %f, ty: %f", keyboardY, inputBoxY, ty); //差值小于0，做平移变换 [UIView animateWithDuration:duration animations:^{ if (ty < 0) { self.view.transform = CGAffineTransformMakeTranslation(0, ty); } }]; }}- (void)keyboardWillHide:(NSNotification *)notification{ //获取键盘弹出的时间 double duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; //还原 [UIView animateWithDuration:duration animations:^{ self.view.transform = CGAffineTransformMakeTranslation(0, 0); }];}///<UITextFieldDelegate>///UITextFieldDelegate编辑完成，视图恢复原状-(void)textFieldDidEndEditing:(UITextField *)textField{ self.view.frame =CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.width,[[UIScreen mainScreen] bounds].size.height);} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/cungudafa/article/details/113121364
