[IOS笔记]plist创建和使用

【1】先代码创建plist文件

#import 

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // insert code here...
        NSArray   *dataArr = @[
                      @{@"name":@"单肩包", @"icon":@"danjianbao"},
                      @{@"name":@"钱包", @"icon":@"qianbao"},
                      @{@"name":@"链条包", @"icon":@"liantiaobao"},
                      @{@"name":@"手提包", @"icon":@"shoutibao"},
                      @{@"name":@"双肩包", @"icon":@"shuangjianbao"},
                      @{@"name":@"斜挎包", @"icon":@"xiekuabao"}];
        BOOL flag = [dataArr writeToFile:@"/Users/cdj/DavidLong/program_iphone/Learning/ShoppingCartCreatPlist/ShoppingCartCreatPlist/shopData.plist" atomically:YES];
        if (flag) {
            NSLog(@"写入成功");
        }
        
    }
    return 0;
}

【2】将plist文件放入到SupportingFiles中，然后读取使用

#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIView *shopCarView;


@property (weak, nonatomic) IBOutlet UIButton *addButton;
@property (weak, nonatomic) IBOutlet UIButton *removeButton;

@property (nonatomic, strong) NSArray  *gDataArr;

@end

@implementation ViewController

-(NSArray *)gDataArr{
    if(_gDataArr == nil){
//        加载数据
//        1获取全路径
        NSString *dataPath = [[NSBundle mainBundle] pathForResource:@"shopData.plist" ofType:nil];
        self.gDataArr = [NSArray arrayWithContentsOfFile:dataPath];
    }
    return _gDataArr;
}


- (void)viewDidLoad {
    [super viewDidLoad];

}


//添加到购物车
- (IBAction)add:(UIButton *)button {
    
//    1.总列数
    NSInteger allCols = 3;
//    2.商品的宽度
    CGFloat width = 80;
    CGFloat height = 100;
//    3.求水平间距
    CGFloat hMargin = (self.shopCarView.frame.size.width - allCols * width)/(allCols -1);
    CGFloat vMargin = (self.shopCarView.frame.size.height - 2 * height)/1;
//    4.用subview的个数代替索引
    NSInteger index = self.shopCarView.subviews.count;
    
//    4.求出x值
    CGFloat x = (hMargin + width) * (index % allCols);
    CGFloat y = (vMargin + height) * (index / allCols);
    
    
//    5创建商品的view
    UIView *shopView = [[UIView alloc] init];
    shopView.frame = CGRectMake(x, y, width, height);
    shopView.backgroundColor = [UIColor greenColor];
    
    [self.shopCarView addSubview:shopView];
    
//    6创建商品的UIImageView对象
    UIImageView *iconView = [[UIImageView alloc] init];
    iconView.frame = CGRectMake(0, 0, width, width);
    iconView.backgroundColor = [UIColor purpleColor];
    [shopView addSubview:iconView];
    
//    7创建商品的label对象
    UILabel *titleLabel = [[UILabel alloc] init];
    titleLabel.frame = CGRectMake(0, width, width, height - width);
    titleLabel.backgroundColor = [UIColor yellowColor];
    titleLabel.textAlignment = NSTextAlignmentCenter;
    [shopView addSubview:titleLabel];
    
//    8设置数据
    NSDictionary *dict = self.gDataArr[index];
    iconView.image = [UIImage imageNamed:dict[@"icon"]];
    titleLabel.text = dict[@"name"];
    
    
//    设置按钮的状态
    if (index == 5) {
        button.enabled = NO;
    }
    
//    删除按钮的状态
    self.removeButton.enabled = YES;
}

//从购物车移除
- (IBAction)remove:(UIButton *)button {
    
//    1删除最后一个商品
    UIView *lastShowView = [self.shopCarView.subviews lastObject];
    [lastShowView removeFromSuperview];
    
//    2设置索引的值
 
    self.addButton.enabled = YES;
    
    if (self.shopCarView.subviews.count == 0) {
        self.removeButton.enabled = NO;
    }
    
}

@end