20141211笔记(UIImageView 设置内容的Mode的方法\UICollectionViewCell Custom的方法\ios modal segue code)

1、UIImageView 设置内容的Mode的方法
imageView.contentMode = UIViewContentModeScaleAspectFill;

2、UICollectionViewCell Custom的方法
CustomUICollectionViewCell.m

- (id)initWithFrame:(CGRect)frame{

    if (self = [super initWithFrame:frame]) {

        [self initUI];

    }

    return self;

}

- (void)initUI{ 
　　//TODO

}

然后在collectionView中注册这个CustomUICollectionViewCell

　　UICollectionViewFlowLayout* flowLayout = [[UICollectionViewFlowLayout alloc]init];

    collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:flowLayout];

    [collectionView setTranslatesAutoresizingMaskIntoConstraints:NO];

    [collectionView setBackgroundColor:[UIColor clearColor]];

    [collectionView registerClass:[CustomCollectionViewCell class] forCellWithReuseIdentifier:@"MY_CELL"];

    collectionView.dataSource = self;

    collectionView.delegate = self;

最后在datasource函数中复用Cell

- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath {

    CustomCollectionViewCell *cell = [cv dequeueReusableCellWithReuseIdentifier:@"MY_CELL" forIndexPath:indexPath];

    

    return cell;

}

这就是CollectionViewCell的Custom流程

 

3、ios modal segue code

- (IBAction)pushMyNewViewController

{

    MyNewViewController *myNewVC = [[MyNewViewController alloc] init];



    // do any setup you need for myNewVC



    [self presentModalViewController:myNewVC animated:YES];//被弃用

　　　　[self presentViewController:viewController animated:YES completion:nil];//被这个代替

}

[self dismissViewControllerAnimated:YES completion:nil];  //dismiss view