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我在 CCscene UserLevelCreation 上切换场景（甚至显示精灵）时遇到了一点问题，但它只发生在我使用 UIImagePickerController 拍摄/接受图片之后，然后当我尝试切换场景时，它会因错误而崩溃：

"Could not attach texture to framebuffer"

这是我用来拍照的代码：

-(void)takePhoto{
AppController *appdel = (AppController*) [[UIApplication sharedApplication] delegate];
@try {

    uip = [[UIImagePickerController alloc] init] ;
    uip.sourceType = UIImagePickerControllerSourceTypeCamera;
    uip.allowsEditing = YES;
    uip.delegate = self;
}
@catch (NSException * e) {
    uip = nil;
}
@finally {
    if(uip) {
        [appdel.navController presentModalViewController:uip animated:NO];
    }
}
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
NSString * LevelImage;
LevelImage=[info objectForKey:UIImagePickerControllerOriginalImage];
AppController *appdel = (AppController*) [[UIApplication sharedApplication] delegate];
[appdel.navController dismissModalViewControllerAnimated:YES];

[NSThread detachNewThreadSelector:@selector(writeImgToPath:) toTarget:self withObject:LevelImage];
}

和 WriteImageToPath 函数：

-(void)writeImgToPath:(id)sender
{
UIImage *image = sender;
NSArray *pathArr = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                       NSUserDomainMask,
                                                       YES);
CGSize size;
int currentProfileIndex = 1;
NSString *path = [[pathArr objectAtIndex:0]
                  stringByAppendingPathComponent:[NSString stringWithFormat:@"CustomLevel_%d.png",currentProfileIndex]];

size = CGSizeMake(1136, 640);
UIGraphicsBeginImageContext(size);
[image drawInRect:CGRectMake(0, 0, 1136, 640)];
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

NSData *data = UIImagePNGRepresentation(image);
[data writeToFile:path atomically:YES];
CCLOG(@"saved...");

CGRect r = CGRectMake(0, 0, 1136, 640);
UIGraphicsBeginImageContext(r.size);

UIImage *img1;

[image drawInRect:r];
img1 = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(img1, nil, nil, nil);
currentProfileIndex++;
[[CCDirector sharedDirector] replaceScene:[LevelEditor Scene]
                           withTransition:[CCTransition transitionPushWithDirection:CCTransitionDirectionLeft duration:1.0f]];
}

-更新 - - - - - - - - - - - - - - - - - - - - - - - - ---------------------------------- 刚才试过在代码中不同地方切换场景，可以切换场景自由直到功能：

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

我认为该功能可能是问题所在。

到目前为止，我已经尝试过：

1.拍照前切换场景，效果很好

2.我读到这可能是因为我正在调整图像的大小，但评论出来并没有什么不同。

3.我在场景切换前也加了断点，场景不为零

4.Finally我tred解散了uip UIImagePickerController，但这也没有什么区别。

很抱歉，很长的帖子/：如果有人知道发生了什么，任何帮助都会非常棒。

4

1 回答 1

1

好的，所以我发现问题出在这一行：

[NSThread detachNewThreadSelector:@selector(writeImgToPath:) toTarget:self withObject:LevelImage];
}

显然 UIkit 的某些部分不是线程友好的，所以我现在只使用

 [self writeImgToPath];

它有效，希望这可以帮助任何有同样问题的人。

于 2014-10-17T00:16:13.140 回答