KVC的步骤以及重点

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MVC的步骤以及重点

Contriller.m

#import "MusickPlayTableController.h"
#import "MusickListCell.h"
#import "MusickModel.h"
@interface MusickPlayTableController ()
@property(nonatomic,retain)NSArray*dataArray;
@property(nonatomic,retain) NSMutableArray *musicArray;
@end

@implementation MusickPlayTableController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.title=@"听风";

    NSURL*url = [NSURL URLWithString:@"http:project.lanou3g.com/teacher/UIAPI/MusicInfoList.plist"];

    NSURLRequest*ruquest = [NSURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:5.0];

    //网络请求
    [NSURLConnection sendAsynchronousRequest:ruquest queue:[[NSOperationQueue alloc ]init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
        if (connectionError) {
            NSLog(@"错误 %@",connectionError);

            return ;


        }

        //data 是一个plisst 数据,对data进行反序列化解写
        _dataArray=[NSPropertyListSerialization propertyListWithData:data options:0 format:NULL error:NULL];
        _musicArray = [NSMutableArray array];
        for (NSDictionary * dic in _dataArray) {
            NSLog(@"%@",dic);
            MusickModel*model=[[MusickModel alloc] init];


            [model setValuesForKeysWithDictionary:dic]; //必须写否则赋不上值

            [_musicArray addObject:model]; //必须写否则赋不上值

//            NSLog(@"%@",model.singer);


        }

        [self.tableView reloadData];

        //从新加载

      // [self.tableView reloadData];

        dispatch_async(dispatch_get_main_queue(), ^{
            //            //.....
                    });

    }];



}

///////////////////////////////////////////////////////////////////////////////////////////////////////

View.m

#import "MusickListCell.h"

@implementation MusickListCell

-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self =[ super initWithStyle:style reuseIdentifier:reuseIdentifier];

    if (self) {
        //歌曲名
        CGRect rect1=CGRectMake(180, 20, 200, 40);

        _SongNameLabel=[[UILabel alloc] initWithFrame:rect1];

        _SongNameLabel.backgroundColor=[UIColor redColor];

        [self addSubview:_SongNameLabel];
        //歌者名
         CGRect rect2=CGRectMake(180, 70, 200, 40);

        _SingerNameLabel=[[UILabel alloc] initWithFrame:rect2];

        _SingerNameLabel.backgroundColor=[UIColor greenColor];

        [self addSubview: _SingerNameLabel];

        //歌手头像
          CGRect rect3=CGRectMake(0, 0, 100, 200);

        _SingerPhtoto=[[UIImageView alloc] initWithFrame:rect3];

        _SingerPhtoto.backgroundColor=[UIColor yellowColor];

        [self addSubview:_SingerPhtoto];


    }
    return self;
}

#pragma 数据模型赋值方法
-(void)setMusickMoudel:(MusickModel *)musickMoudel
{
    if (_musickMoudel!=musickMoudel) {

//        _musickMoudel=[musickMoudel retain];
        _SingerNameLabel.text=musickMoudel.artists_name;

        _SongNameLabel.text=musickMoudel.name;

        _SingerPhtoto.image =musickMoudel.picUrl;

    }
}

- (void)awakeFromNib {

}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];


}

@end
/////////////////////////////////////////////////////////////

mosel.m

#import "MusickModel.h"

@implementation MusickModel

-(void)setValue:(id)value forKey:(NSString *)key
{
    //父类方法必须写否则赋不上值
    [super setValue:value forKey:key];


}

-(void)setValue:(id)value forUndefinedKey:(NSString *)key
{
    //防止蹦亏
}
@end

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KVC的步骤 以及重点

KVC的步骤以及重点