UIImageView and UIScrollView load lot of pictures
- by Allan.Chen
In my app, i use UIImageView and UIScrollView to show lot of pictures(Every time there are about 20 pictures and every pictures about 600px*500px and size is about 600KB ), i use for this code to do this function.
Here is code:
//Here is pictures Data;
self.klpArry = self.pictureData;
CGSize size = self.klpScrollView1.frame.size;
for (int i=0; i < [klpArr count]; i++) {
UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectMake((size.width * i)+300, 20, 546, 546)];
NSString *filePath = [[NSBundle mainBundle] pathForResource:[klpArr objectAtIndex:i] ofType:@"jpg"];
UIImage *imageData = [[UIImage alloc]initWithData:[NSData dataWithContentsOfFile:filePath]];
[iv setImage:imageData];
iv.backgroundColor = [UIColor grayColor];
[self.klpScrollView1 addSubview:iv];
imageData = nil;
iv = nil;
iv.image = nil;
filePath = nil;
[imageData release];
[filePath release];
[iv release];
}
// show the picture in scrollview;
[self.klpScrollView1 setContentSize:CGSizeMake(size.width * numImage, size.height)];
self.klpScrollView1.pagingEnabled = YES;
self.klpScrollView1.showsHorizontalScrollIndicator = NO;
self.klpScrollView1.backgroundColor = [UIColor grayColor];
But everytime i init this function, the memory will increase about 5MB, Actually i release UIImageView, UIimage and UIScrollView (vi.image=nil,[vi release]) but i doesn't work, it can't release the memory. BTW, i use my friend code first vi.image=nil then vi=nil; but the pictures not to show on scrollview. any one can help me ?? Thx ~~
