iOS中键盘弹出会遮挡输入框如何解决？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
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：
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);
} 看完上述内容是否对您有帮助呢？如果还想对相关知识有进一步的了解或阅读更多相关文章，请关注创新互联行业资讯频道，感谢您对创新互联网站建设公司，的支持。
