ios剪裁图片

ios裁剪图片

UIImage *srcimg = [UIImage imageNamed:@"test.png"];／／／／test.png宽172 高192NSLog(@"image width = %f,height = %f",srcimg.size.width,srcimg.size.height);UIImageView *imgview = [[UIImageView alloc] init];imgview.frame = CGRectMake(10, 150, 300, 220);CGRect rect = CGRectMake(0, 0, 300, 100);／／要裁剪的图片区域，按照原图的像素大小来，超过原图大小的边自动适配CGImageRef cgimg = CGImageCreateWithImageInRect([srcimg CGImage], rect);imgview.image = [UIImage imageWithCGImage:cgimg];CGImageRelease(cgimg);／／用完一定要释放，否则内存泄露[self.view addSubview:imgview];