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、UICollectionViewCellCustom的方法
CustomUICollectionViewCell.m

-(id)initWithFrame:(CGRect)frame{
if(self=[superinitWithFrame:frame]){
[selfinitUI];
}
returnself;
}
-(void)initUI{
　　//TODO
}

然后在collectionView中注册这个

CustomUICollectionViewCell

　　UICollectionViewFlowLayout*flowLayout=[[UICollectionViewFlowLayoutalloc]init];
collectionView=[[UICollectionViewalloc]initWithFrame:CGRectZerocollectionViewLayout:flowLayout];
[collectionViewsetTranslatesAutoresizingMaskIntoConstraints:NO];
[collectionViewsetBackgroundColor:[UIColorclearColor]];
[collectionViewregisterClass:[CustomCollectionViewCellclass]forCellWithReuseIdentifier:@"MY_CELL"];
collectionView.dataSource=self;
collectionView.delegate=self;

最后在datasource函数中复用Cell

-(UICollectionViewCell*)collectionView:(UICollectionView*)cvcellForItemAtIndexPath:(NSIndexPath*)indexPath{
CustomCollectionViewCell*cell=[cvdequeueReusableCellWithReuseIdentifier:@"MY_CELL"forIndexPath:indexPath];

returncell;
}

这就是CollectionViewCell的Custom流程

3、iosmodalseguecode

-(IBAction)pushMyNewViewController
{
MyNewViewController*myNewVC=[[MyNewViewControlleralloc]init];

//doanysetupyouneedformyNewVC

[selfpresentModalViewController:myNewVCanimated:YES];//被弃用

　　　　[selfpresentViewController:viewControlleranimated:YEScompletion:nil];//被这个代替

}

[selfdismissViewControllerAnimated:YEScompletion:nil];//dismissview