handy categories for generate NSLayoutConstraint programatically.
if you are using AutoLayout:
pod 'HandyAutoLayout'
if you are using Frame:
pod 'HandyFrame'
for auto layout:
[self.view addConstraint:[self.tableView constraintCenterXEqualToView:self.view]];
[self.view addConstraint:[self.tableView constraintWidthEqualToView:self.view]];
[self.view addConstraints:[self.nextStepButton constraintsSize:CGSizeMake(300.0f, 40.0f)]];
[self.view addConstraint:[self.nextStepButton constraintCenterXEqualToView:self.view]];
for frame:
[self.subtitleLabel leftEqualToView:self.titleLabel];
[self.subtitleLabel top:14 FromView:self.timeLabel];
[self.createPost centerXEqualToView:self.view];
[self.createPost bottomInContainer:19.0f shouldResize:NO];