字典转模型

/** 将image懒加载，获取图片 使用self.icon给image赋值*/
-(UIImage *)image {
    if (_image == nil) {
        _image = [UIImage imageNamed:self.icon];
    }
    return _image;
}

+ (instancetype)appInfoWithDict:(NSDictionary *)dict;

- (instancetype)initWithDict:(NSDictionary *)dict;

+ (NSArray *)appList {
    // 用数组接收plist文件的数据，通过[NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource: ofType:]]方法
    NSArray *array = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"app.plist" ofType:nil]];
    NSMutableArray *arrayM = [NSMutableArray array];
    for (NSDictionary *dict in array) {
        [arrayM addObject:[AppInfo appInfoWithDict:dict]];
    }
    return  arrayM;
}