.h里面写的两个属性。
//评论的时候弹出来的。
@property (retain, nonatomic) UIView *mainView;
@property (retain, nonatomic) UITextView *myTextV1;
ViewDidLoad 里面写的。
[[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(changeContentViewPoint:) name:UIKeyboardWillShowNotificationobject:nil];
self.myTextV1 = [[UITextViewalloc]initWithFrame:CGRectMake(0, 0, 280, 40)];
self.myTextV1.layer.cornerRadius = 5;
self.myTextV1.layer.masksToBounds = YES;
UIButton *fasongBut = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];
fasongBut.frame = CGRectMake(280, 0, 40, 40);
[fasongBut setTitle:@"确定"forState:UIControlStateNormal];
[fasongBut addTarget:selfaction:@selector(pinglunQueding:) forControlEvents:UIControlEventTouchUpInside];
self.mainView = [[UIViewalloc]initWithFrame:CGRectMake(0, kScreenHeight, 320, 40)];
[self.view addSubview:self.mainView];
[self.mainViewaddSubview:self.myTextV1];
[self.mainView addSubview:fasongBut];
下面是操作的三个方法。
-(void)pinglunAction:(UIButton *)sender{
self.mainView.hidden = NO;
[self.viewbringSubviewToFront:self.mainView];
[self.myTextV1becomeFirstResponder];
}
-(void)pinglunQueding:(UIButton *)sender{
[self.myTextV1resignFirstResponder];
self.mainView.hidden = YES;
self.mainView.center = CGPointMake(self.mainView.center.x, kScreenHeight);
}
// 根据键盘状态，调整_mainView的位置
- (void) changeContentViewPoint:(NSNotification *)notification{
NSDictionary *userInfo = [notification userInfo];
NSValue *value = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];
CGFloat keyBoardEndY = value.CGRectValue.origin.y; // 得到键盘弹出后的键盘视图所在y坐标
NSNumber *duration = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];
NSNumber *curve = [userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey];
// 添加移动动画，使视图跟随键盘移动
[UIViewanimateWithDuration:duration.doubleValueanimations:^{
[UIViewsetAnimationBeginsFromCurrentState:YES];
[UIViewsetAnimationCurve:[curve intValue]];
self.mainView.center = CGPointMake(self.mainView.center.x, keyBoardEndY - kStateBarHeight - self.mainView.bounds.size.height/2.0); // keyBoardEndY的坐标包括了状态栏的高度，要减去
}];
}