学习总结第二篇

1，通过图片的地址获取到图片的名称

    第一种方法

    //拿到图片地址
    NSString*urlStr = [self.movie.imagesobjectForKey:@"medium"];
    //扩展：构建URL
    NSURL *imgurl = [NSURLURLWithString:urlStr];
//    NSData *data = [NSData dataWithContentsOfURL:imgurl];

//    imgView.image = [UIImage imageWithData:data];

   第二种方法

   导入SDWebImage文件使用其中的UIImageView+WebCache.h文件

    //拿到图片地址
    NSString*urlStr = [self.movie.imagesobjectForKey:@"medium"];
    //扩展：构建URL

    NSURL *imgurl = [NSURLURLWithString:urlStr];

      [imgView sd_setImageWithURL:imgurl];

2，解析json数据

     + (id)requestData:(NSString*)filename
{
    NSString*filePath = [[NSBundlemainBundle]pathForResource:filenameofType:@"json"];
   
    NSData *data = [NSDatadataWithContentsOfFile:filePath];
   
    NSError *error = nil;
    id json =  [NSJSONSerializationJSONObjectWithData:dataoptions:NSJSONReadingMutableContainerserror:&error];
   
    if (json == nil) {
        NSLog(@"%@", error);
        returnnil;
    }else{
        returnjson;

    } 

}

3,//拿到storyboard当中创建的控制器对象
           
            UIStoryboard*storyboard = [UIStoryboardstoryboardWithName:@"Main"bundle:nil];

           

            NewsDetailViewController *detailVC = [storyboard instantiateViewControllerWithIdentifier:@"NewsDetailVC”];//获取到storyboard中需要push的视图的storyboardID

           

            [self.navigationControllerpushViewController:detailVC animated:YES];

4, 当Push进此界面时，隐藏系统的tabbar

   self.hidesBottomBarWhenPushed= YES;

5, 拿到工程文件中的资源文件(以创建好的xib)

          NSBundle*bundle = [NSBundlemainBundle];
   
    NSArray *xibs = [bundle loadNibNamed:@"MyView"owner:niloptions:nil];
   
    UIView *view = [xibs lastObject];
   
    CGRect rect1 = view.frame;
    rect1.origin= CGPointMake(100,200);

    view.frame = rect1;

6,响应触摸事件，imageView，label的默认触摸事件为NO,其他的为YES

     button.userInteractionEnabled = NO;

7,图片的拉伸

    image1 = [image1 stretchableImageWithLeftCapWidth:5 topCapHeight:0];
//    image2 = [image2 stretchableImageWithLeftCapWidth:5 topCapHeight:0];
   
    image1 = [image1 resizableImageWithCapInsets:UIEdgeInsetsMake(0,5,0,5)];

    image2 = [image2 resizableImageWithCapInsets:UIEdgeInsetsMake(0,5, 0,5)];

8，加载百度

    UIWebView *webView = [[UIWebViewalloc]initWithFrame:self.view.bounds];

    //    //创建request对象
//    NSMutableURLRequest *mRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]];
//   
//    //网页控件加载一个网络请求
//    [webView loadRequest: mRequest];

 

 9， 滑动到指定的单元格

    NSIndexPath *indexPath = [NSIndexPathindexPathForItem:self.indexinSection:0];

    [collectionView scrollToItemAtIndexPath:indexPath atScrollPosition:UICollectionViewScrollPositionCenteredHorizontallyanimated:NO];

10, 隐藏状态栏

- (BOOL)prefersStatusBarHidden
{
    return self.navigationController.navigationBarHidden;

}

11,  //动态设置单元格的宽和高
- (CGSize)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath*)indexPath
{
    return CGSizeMake(self.pageWidth,self.height);

}