UIView-layer method, uiview-Layer

UIView-layer method, uiview-Layer

//// ViewController. m // UIView-layer concept /// Created by wangtouwang on 15/5/5. // Copyright (c) 2015 wangtouwang. all rights reserved. // # import "ViewController. h "@ interface ViewController () @ property (nonatomic, strong) UIView * viewA; @ property (nonatomic, strong) UIView * viewB; @ property (nonatomic, strong) UIView * viewC; @ end @ implementation ViewController @ synthesize viewA; @ synthesize viewB; @ synthesize viewC;-(void) viewDidLoad {[super viewDidLoad]; [self. view setBackgroundColor: [UIColor whiteColor]; [self. navigationItem setTitle: @ "layer concept"]; UIButton * addBtn1 = [[UIButton alloc] initWithFrame: CGRectMake (10, 70, 60, 30)]; [addBtn1 setTitle: @ "add" forState: UIControlStateNormal]; addBtn1.titleLabel. font = [UIFont systemFontOfSize: 13.0f]; [addBtn1 setBackgroundColor: [UIColor grayColor]; [addBtn1 addTarget: self action: @ selector (addDract) forControlEvents: role]; [self. view addSubview: addBtn1]; UIButton * addBtn2 = [[UIButton alloc] initWithFrame: CGRectMake (80, 70, 60, 30)]; [addBtn2 setTitle: @ "delete" forState: Unknown] addBtn2.titleLabel. font = [UIFont systemFontOfSize: 13.0f]; [addBtn2 setBackgroundColor: [UIColor grayColor]; [addBtn2 addTarget: self action: @ selector (role) forControlEvents: role]; [self. view addSubview: addBtn2]; UIButton * addBtn3 = [[UIButton alloc] initWithFrame: CGRectMake (, 60, 30)]; [addBtn3 setTitle: @ "overlay" forState: Unknown]; addBtn3.titleLabel. font = [UIFont systemFontOfSize: 13.0f]; [addBtn3 setBackgroundColor: [UIColor grayColor]; [addBtn3 addTarget: self action: @ selector (addSecquece) forControlEvents: role. view addSubview: addBtn3]; UIButton * addBtn4 = [[UIButton alloc] initWithFrame: CGRectMake (, 60, 30)]; [addBtn4 setTitle: @ "Move Up" forState: UIControlStateNormal]; addBtn4.titleLabel. font = [UIFont systemFontOfSize: 13.0f]; [addBtn4 setBackgroundColor: [UIColor grayColor]; [addBtn4 addTarget: self action: @ selector (forUpMove) forControlEvents: role]; [self. view addSubview: addBtn4]; UIButton * addBtn5 = [[UIButton alloc] future: CGRectMake (290,70, 60, 30)]; [addBtn5 setTitle: @ "Move Down" forState: Unknown]; addBtn5.titleLabel. font = [UIFont systemFontOfSize: 13.0f]; [addBtn5 setBackgroundColor: [UIColor grayColor]; [addBtn5 addTarget: self action: @ selector (forDownMove) forControlEvents: role]; [self. view addSubview: addBtn5]; UIButton * addBtn6 = [[UIButton alloc] initWithFrame: CGRectMake (10,120,120, 30)]; [addBtn6 setTitle: @ "Change Up and down" forState: Unknown]; addBtn6.titleLabel. font = [UIFont systemFontOfSize: 13.0f]; [addBtn6 setBackgroundColor: [UIColor grayColor]; [addBtn6 addTarget: self action: @ selector (upForDown) forControlEvents: role]; [self. view addSubview: addBtn6];} # add layer-(void) addDract {viewA = [[UIView alloc] initWithFrame: CGRectMake (100,250,150,150)]; viewA. backgroundColor = [UIColor greenColor]; [self. view addSubview: viewA] ;}# pragma mark deletes a layer-(void) removeDract {[viewA removeFromSuperview];} # pragma mark layer superposition order first added in the following and then added in the above-(void) addSecquece {viewB = [[UIView alloc] initWithFrame: CGRectMake (110,260,150,150)]; viewB. backgroundColor = [UIColor redColor]; [self. view addSubview: viewB]; viewC = [[UIView alloc] initWithFrame: CGRectMake (120,270,150,150)]; viewC. backgroundColor = [UIColor yellowColor]; [self. view addSubview: viewC] ;}# pragma mark layer move up-(void) forUpMove {[self. view bringSubviewToFront: viewA] ;}# pragma mark layer move down-(void) forDownMove {[self. view sendSubviewToBack: viewA] ;}# pragma mark transpose-(void) upForDown {NSInteger indexC = [[self. view subviews] indexOfObject: viewC]; NSInteger indexA = [[self. view subviews] indexOfObject: viewA]; [self. view exchangeSubviewAtIndex: indexC withSubviewAtIndex: indexA];} @ end