Tag: uislider nslayoutconstraint

以编程方式添加与Autolay的UISLider

我试图以编程方式添加一个UISlider到我的视图，包括约束，以便它的宽度适应整个屏幕宽度。 这是我到目前为止： //2 Add UISlider self.slider = [[UISlider alloc] init]; [self.view addSubview:self.slider]; [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.slider attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeft multiplier:1 constant:0]]; [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.slider attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeRight multiplier:1 constant:0]]; [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.slider attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeBottom multiplier:1 constant:0]];