UIView-图层方法

//

//  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(10,70, 60, 30)];

    [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(80,70, 60, 30)];

    [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(150,70, 60, 30)];

    [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(220,70, 60, 30)];

    [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(290,70, 60, 30)];

    [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(10,120, 120, 30)];

    [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(100, 250, 150, 150)];

    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(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 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