//

//  ViewController.m

//  UIView-图层概念

//

//  Created by wangtouwang on 15/5/5.

//  Copyright (c) 2015年 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:@"图层概念"];

    UIButton *addBtn1 = [[UIButton alloc] initWithFrame:CGRectMake(,, , )];

    [addBtn1 setTitle:@"增加" forState:UIControlStateNormal];

    addBtn1.titleLabel.font=[UIFont systemFontOfSize:13.0f];

    [addBtn1 setBackgroundColor:[UIColor grayColor]];

    [addBtn1 addTarget:self action:@selector(addDract) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:addBtn1];

    UIButton *addBtn2 = [[UIButton alloc] initWithFrame:CGRectMake(,, , )];

    [addBtn2 setTitle:@"删除" forState:UIControlStateNormal];

    addBtn2.titleLabel.font=[UIFont systemFontOfSize:13.0f];

    [addBtn2 setBackgroundColor:[UIColor grayColor]];

    [addBtn2 addTarget:self action:@selector(removeDract) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:addBtn2];

    UIButton *addBtn3 = [[UIButton alloc] initWithFrame:CGRectMake(,, , )];

    [addBtn3 setTitle:@"叠加" forState:UIControlStateNormal];

    addBtn3.titleLabel.font=[UIFont systemFontOfSize:13.0f];

    [addBtn3 setBackgroundColor:[UIColor grayColor]];

    [addBtn3 addTarget:self action:@selector(addSecquece) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:addBtn3];

    UIButton *addBtn4 = [[UIButton alloc] initWithFrame:CGRectMake(,, , )];

    [addBtn4 setTitle:@"上移" forState:UIControlStateNormal];

    addBtn4.titleLabel.font=[UIFont systemFontOfSize:13.0f];

    [addBtn4 setBackgroundColor:[UIColor grayColor]];

    [addBtn4 addTarget:self action:@selector(forUpMove) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:addBtn4];

    UIButton *addBtn5 = [[UIButton alloc] initWithFrame:CGRectMake(,, , )];

    [addBtn5 setTitle:@"下移" forState:UIControlStateNormal];

    addBtn5.titleLabel.font=[UIFont systemFontOfSize:13.0f];

    [addBtn5 setBackgroundColor:[UIColor grayColor]];

    [addBtn5 addTarget:self action:@selector(forDownMove) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:addBtn5];

    UIButton *addBtn6 = [[UIButton alloc] initWithFrame:CGRectMake(,, , )];

    [addBtn6 setTitle:@"上下调换" forState:UIControlStateNormal];

    addBtn6.titleLabel.font=[UIFont systemFontOfSize:13.0f];

    [addBtn6 setBackgroundColor:[UIColor grayColor]];

    [addBtn6 addTarget:self action:@selector(upForDown) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:addBtn6];

}

#pragma mark 增加图层

-(void)addDract{

    viewA= [[UIView alloc] initWithFrame:CGRectMake(, , , )];

    viewA.backgroundColor=[UIColor greenColor];

     [self.view addSubview:viewA];

}

#pragma mark 删除图层

-(void)removeDract{

    [viewA removeFromSuperview];

}

#pragma mark 图层叠加顺序 先添加的在下面 后添加的在上面

-(void)addSecquece{

    viewB= [[UIView alloc] initWithFrame:CGRectMake(, , , )];

    viewB.backgroundColor=[UIColor redColor];

    [self.view addSubview:viewB];

    viewC= [[UIView alloc] initWithFrame:CGRectMake(, , , )];

    viewC.backgroundColor=[UIColor yellowColor];

    [self.view addSubview:viewC];

}

#pragma mark 图层向上移

-(void)forUpMove{

    [self.view bringSubviewToFront:viewA];

}

#pragma mark 图层向下移

-(void)forDownMove{

    [self.view sendSubviewToBack:viewA];

}

#pragma mark 上下调换

-(void)upForDown{

    NSInteger indexC= [[self.view subviews] indexOfObject:viewC];

    NSInteger indexA= [[self.view subviews] indexOfObject:viewA];

    [self.view exchangeSubviewAtIndex:indexC withSubviewAtIndex:indexA];

}

@end