Question

我在应用程序中捕获图像，我的应用程序收到内存警告和应用程序崩溃以下是我正在使用的代码...请帮助。此应用程序就像从图库中选择图像并向其添加动画。动画正在运行时会捕捉图像并使其成为视频。

我在动画时捕捉图像时会收到内存警告..

-(void)captureImage:(NSTimer*) t {
NSLog(@"captureImage");


// Create a graphics context with the target size
// On iOS 4 and later, use UIGraphicsBeginImageContextWithOptions to take the scale into  consideration
// On iOS prior to 4, fall back to use UIGraphicsBeginImageContext
CGSize imageSize = CGSizeZero;

UIInterfaceOrientation orientation = 
[UIApplication    sharedApplication].statusBarOrientation;
if (UIInterfaceOrientationIsPortrait(orientation)) {
    imageSize = [UIScreen mainScreen].bounds.size;
    NSLog(@"imageSize:%@  ",NSStringFromCGSize(imageSize));
} else {
    imageSize = 
 CGSizeMake([UIScreen mainScreen].bounds.size.height, 
 [UIScreen mainScreen].bounds.size.width);
//CGSizeMake(animatedImgView.frame.size.width, animatedImgView.frame.size.height);//
}

UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
for (UIWindow *window in [[UIApplication sharedApplication] windows]) {


    CGContextSaveGState(context);
    CGContextTranslateCTM(context, window.center.x, window.center.y);
    CGContextConcatCTM(context, window.transform);
    CGContextTranslateCTM(context,
  -window.bounds.size.width * window.layer.anchorPoint.x, 
 -window.bounds.size.height * window.layer.anchorPoint.y);
    if (orientation == UIInterfaceOrientationLandscapeLeft) {
        CGContextRotateCTM(context, M_PI_2);
        CGContextTranslateCTM(context, 0, -imageSize.width);
    } else if (orientation == UIInterfaceOrientationLandscapeRight) {
        CGContextRotateCTM(context, -M_PI_2);
        CGContextTranslateCTM(context, -imageSize.height, 0);
    } else if (orientation == UIInterfaceOrientationPortraitUpsideDown) {
        CGContextRotateCTM(context, M_PI);
        CGContextTranslateCTM(context, -imageSize.width, -imageSize.height);
    }
    if 
([window
respondsToSelector:@selector(drawViewHierarchyInRect:afterScreenUpdates:)])     {
         [window drawViewHierarchyInRect:window.bounds afterScreenUpdates:NO];
        //[animatedImgView drawViewHierarchyInRect:window.bounds afterScreenUpdates:NO];
    } else {

        //[window.layer.presentationLayer renderInContext:context];
    }
    CGContextRestoreGState(context);
    }


 //   @autoreleasepool {
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    [savedImages addObject:image];
    image = nil;
 //  }

  }

感谢帮助...

Answer 1

我认为将图像设置为nil是不够的。看到： The following graphical code tagged as Leak by iOS ARC

异常的另一个原因可能是内存中有许多图像。它们存放在哪里？文件系统？数据库？存储器？

应用程序崩溃图像捕获

1 个答案: