IOS 如何保存图片到document实例

作者：朱克锋

邮箱：zhukefeng@iboxpay.com

转载请注明出处：http://blog.youkuaiyun.com/linux_zkf

- (NSString *) findUniqueSavePath

{

int i = 1;

NSString *path; 

do {

    path = [NSString stringWithFormat:@"%@/Documents/IMAGE_%04d.PNG", NSHomeDirectory(), i++];

} while ([[NSFileManager defaultManager] fileExistsAtPath:path]);

return path;

}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

[self dismissModalViewControllerAnimated:YES];

[picker release];

[UIImagePNGRepresentation(image) writeToFile:[self findUniqueSavePath] atomically:YES];

}