当输入框在页面下方时,点击通常会出现被键盘遮挡的现象,那么,怎么去解决呢?针对这一问题,我给出自己的解决方法,具体如下:
1、遵守协议,设置代理:UITextFieldDelegate
UITextField *textField = [[UITextField alloc] init];
textField.delegate = self;
2、实现代理方法- (void)textFieldDidBeginEditing:(UITextField *)textField,调整view的frame:
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
[self changeViewFrameWithTextField:textField];
}
- (void)changeViewFrameWithTextField:(UITextField *)textField
{
// 获取当前被点击的textfield的frame
CGRect frame = textField.frame;
// 计算偏移量offset
// 该偏移量为: 当前textfield的y值 + 当前textfield的高度 - (屏幕的高度 - 键盘的高度 - 键盘toolBar的高度)
int offset = frame.origin.y + frame.size.height - (ScreenHeight - 216 - 35);
// 设置键盘移动时间
NSTimeInterval animationDuration = 0.30f;
// 创建执行动画
[UIView beginAnimations:@"changeKeyboard" context:nil];
[UIView setAnimationDuration:animationDuration];
if(offset > 0)// 当偏移量大于0时,也就是键盘被遮挡时,改变页面的frame
{
self.view.frame = CGRectMake(0.0f, -offset ,ScreenHeight ,ScreenHeight);
}
// 开始动画
[UIView commitAnimations];
}
3、输入结束后,恢复frame的值
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[self hidenTextField];
[self.view resignFirstResponder];
NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations:@"changeKeyboard" context:nil];
[UIView setAnimationDuration:animationDuration];
self.view.frame = CGRectMake(0, 0, ScreenWidth, ScreenHeight);
[UIView commitAnimations];
}
4、如果在键盘return键也有操作时,也要记得写恢复frame的代码
希望可以对大家有所帮助。康撒米哒~~~