Sprite Kit iOS 7.1崩溃的removeFromParent [英] Sprite Kit iOS 7.1 crash on removeFromParent
本文介绍了Sprite Kit iOS 7.1崩溃的removeFromParent的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已将iPad Air更新为7.1，Xcode更新为5.1。
Xcode想要更新我的项目到推荐的设置，我同意。
之后，我的游戏开始崩溃在几个地方，当我删除父节点。
这是我的一个惊喜 - 在更新之前没有交叉。我恢复了我的项目，发现了Xcode对它做了什么 - 只改变架构字符串：
之前：
之后：
在旧版本中没有崩溃。
如果我在新版本中删除arm64支持，没有崩溃。
在模拟器中，新旧版本没有崩溃。
我的代码应该在哪里注意？
代码栈：
SpriteKit`SKCSprite :: removeSubsprite（SKCSprite *）：
0x1859442cc ：stp fp，lr，[sp，＃-16]！
0x1859442d0：add fp，sp，0
0x1859442d4：stp x20，x19，[sp，＃-16]！
0x1859442d8：sub sp，sp，＃16
0x1859442dc：mov x19，x0
0x1859442e0：str x1，[sp，＃8]
0x1859442e4：add x20，sp，8
0x1859442e8：add x0，x19，544
0x1859442ec：mov x1，x20
0x1859442f0：bl 0x18594872c; unsigned long std :: __ 1 :: __ tree< SKCSprite *，std :: __ 1 :: less< SKCSprite *> ;, std :: __ 1 :: allocator< SKCSprite *> > :: __ erase_unique< SKCSprite *>（SKCSprite * const&）
0x1859442f4：add x0，x19，464
0x1859442f8：mov x1，x20
0x1859442fc：bl 0x185948218; std :: __ 1 :: list< SKCSprite *，std :: __ 1 :: allocator< SKCSprite *> > :: remove（SKCSprite * const&）
0x185944300：ldr x20，[sp，1]
0x185944304：ldrb w8，[x20，＃18]
0x185944308：ldrh w9， x20，＃16]
0x18594430c：orr w8，w9，w8，lsl＃16
0x185944310：tbnz w8，＃1，0x185944324; SKCSprite :: removeSubsprite（SKCSprite *）+ 88
0x185944314：ldr x9，[x20,61]
0x185944318：ldr x9，[x9,2]
0x18594431c：cbnz x9，0x185944324; SKCSprite :: removeSubsprite（SKCSprite *）+ 88
0x185944320：tbz w8，＃8，0x185944330; SKCSprite :: removeSubsprite（SKCSprite *）+ 100
0x185944324：mov x0，x19
0x185944328：mov x1，x20
0x18594432c：bl 0x18594828c; SKCSprite :: removeFromOffscreenList（SKCSprite *）
0x185944330：str xzr，[x20，＃392]
0x185944334：ldr x8，[x20,0]
0x185944338：ldr x8，[x8,10 ]
0x18594433c：mov x0，x20
0x185944340：blr x8
0x185944344：ldrh w8，[x19，＃20]
0x185944348：orr w9，w8，＃0x40
0x18594434c：strh w9，[x19，＃20]
0x185944350：ldr x8，[x19，49]
0x185944354：cbz x8，0x185944388; SKCSprite :: removeSubsprite（SKCSprite *）+ 188
0x185944358：add x9，x19,392
0x18594435c：ldrh w10，[x8，＃20]
0x185944360：orr w10，w10，＃0x40
0x185944364：strh w10，[x8，＃20]
0x185944368：ldr x8，[x9,0]
0x18594436c：add x9，x8，392
0x185944370：ldrh w10， [x8，＃20]
0x185944374：orr w10，w10，＃0x40
0x185944378：strh w10，[x8，＃20]
0x18594437c：ldr x8，[x8，49]
0x185944380：cbnz x8，0x18594435c; SKCSprite :: removeSubsprite（SKCSprite *）+ 144
0x185944384：ldrh w9，[x19，＃20] EXC_BAD_ACCESS在这里。
0x185944388：orr w8，w9，＃0x2
0x18594438c：strh w8，[x19，＃20]
0x185944390：b 0x185944398; SKCSprite :: removeSubsprite（SKCSprite *）+ 204
0x185944394：ldrh w8，[x19，＃20]
0x185944398：tbnz w8，＃7，0x1859443ac; SKCSprite :: removeSubsprite（SKCSprite *）+ 224
0x18594439c：orr w8，w8，＃0x80
0x1859443a0：strh w8，[x19，＃20]
0x1859443a4：ldr x19， 49]
0x1859443a8：cbnz x19，0x185944394; SKCSprite :: removeSubsprite（SKCSprite *）+ 200
0x1859443ac：sub sp，fp，＃16
0x1859443b0：ldp x20，x19，[sp]，＃16
0x1859443b4：ldp fp，lr ，[sp]，＃16
0x1859443b8：ret lr
信息：
我的错误：
堆叠：
我发现了一些问题。我想要删除的节点包括两个SKSpriteNodes（我的sprite图像和它的阴影）和一个SKShapeNode（一个细黑色的绳子）。我尝试用SKSpriteNode绳子替换我的SKShapeNode绳子，我成功了 -
代码从父级删除我的节点：
SKAction * moveCloud = [SKAction moveToX：destinationX duration：moveDuration];
[cloud runAction：moveCloud completion：^ {
[cloud removeFromParent];
}];
将SKShapeNode绳索添加到我的节点的代码：
- （void）addRopeToCloud：（SKNode *）cloud
{
CGFloat maxY = self.scene.size.height;
CGFloat length = maxY - [self.scene convertPoint：cloud.position fromNode：cloud.parent] .y;
CGMutablePathRef path = CGPathCreateMutable（）;
CGPathMoveToPoint（path，NULL，0，0）;
CGPathAddLineToPoint（path，NULL，0，length）;
SKShapeNode * rope = [[SKShapeNode alloc] init];
rope.path = path;
rope.strokeColor = [UIColor blackColor];
rope.lineWidth = 0.1;
rope.antialiased = YES;
rope.zPosition = -0.01;
CGFloat threadScale = 1 / cloud.xScale;
rope.xScale = threadScale;
rope.yScale = threadScale;
[cloud addChild：rope];
CGPathRelease（path）;
}
将SKSpriteNode绳索添加到我的节点的代码，可以解决问题： / p>
- （void）addRopeToCloud：（SKNode *）cloud
{
CGFloat maxY = self.scene。高度;
CGFloat length = maxY - [self.scene convertPoint：cloud.position fromNode：cloud.parent] .y;
CGSize ropeSize = CGSizeMake（1.5，length）;
SKSpriteNode * rope = [SKSpriteNode spriteNodeWithColor：[SKColor blackColor] size：ropeSize];
rope.anchorPoint = CGPointMake（0.5，0）;
CGFloat ropeScale = 1 / cloud.xScale;
rope.xScale = ropeScale;
rope.yScale = ropeScale;
rope.zPosition = -0.01;
[cloud addChild：rope];
}
看起来我的SKShapeNode添加代码时出错，了解到底是什么。
解决方案当SKShapeNode的父级在iOS 7.1中从superview中删除时，
$ b我的工作是将SKShapeNode属性设置为nil，然后从父级中删除
I have updated iPad Air to 7.1 and Xcode to 5.1. Xcode wanted to update my project to recommended settings, I agreed.
After that my game began crashing in a couple of places when I remove node from parent.
That was a surprise for me — there were no crossings before the update. I restored my project and found out what Xcode does to it — only changes Architectures string:
Before:
After:
In the old version there are no crashes. There are no crashes if I remove arm64 support in new version. In the simulator there are no crashes in both new and old versions.
Where should I pay attention in my code?
Code stack:
SpriteKit`SKCSprite::removeSubsprite(SKCSprite*): 0x1859442cc: stp fp, lr, [sp, #-16]! 0x1859442d0: add fp, sp, 0 0x1859442d4: stp x20, x19, [sp, #-16]! 0x1859442d8: sub sp, sp, #16 0x1859442dc: mov x19, x0 0x1859442e0: str x1, [sp, #8] 0x1859442e4: add x20, sp, 8 0x1859442e8: add x0, x19, 544 0x1859442ec: mov x1, x20 0x1859442f0: bl 0x18594872c ; unsigned long std::__1::__tree<SKCSprite*, std::__1::less<SKCSprite*>, std::__1::allocator<SKCSprite*> >::__erase_unique<SKCSprite*>(SKCSprite* const&) 0x1859442f4: add x0, x19, 464 0x1859442f8: mov x1, x20 0x1859442fc: bl 0x185948218 ; std::__1::list<SKCSprite*, std::__1::allocator<SKCSprite*> >::remove(SKCSprite* const&) 0x185944300: ldr x20, [sp, 1] 0x185944304: ldrb w8, [x20, #18] 0x185944308: ldrh w9, [x20, #16] 0x18594430c: orr w8, w9, w8, lsl #16 0x185944310: tbnz w8, #1, 0x185944324 ; SKCSprite::removeSubsprite(SKCSprite*) + 88 0x185944314: ldr x9, [x20, 61] 0x185944318: ldr x9, [x9, 2] 0x18594431c: cbnz x9, 0x185944324 ; SKCSprite::removeSubsprite(SKCSprite*) + 88 0x185944320: tbz w8, #8, 0x185944330 ; SKCSprite::removeSubsprite(SKCSprite*) + 100 0x185944324: mov x0, x19 0x185944328: mov x1, x20 0x18594432c: bl 0x18594828c ; SKCSprite::removeFromOffscreenList(SKCSprite*) 0x185944330: str xzr, [x20, #392] 0x185944334: ldr x8, [x20, 0] 0x185944338: ldr x8, [x8, 10] 0x18594433c: mov x0, x20 0x185944340: blr x8 0x185944344: ldrh w8, [x19, #20] 0x185944348: orr w9, w8, #0x40 0x18594434c: strh w9, [x19, #20] 0x185944350: ldr x8, [x19, 49] 0x185944354: cbz x8, 0x185944388 ; SKCSprite::removeSubsprite(SKCSprite*) + 188 0x185944358: add x9, x19, 392 0x18594435c: ldrh w10, [x8, #20] 0x185944360: orr w10, w10, #0x40 0x185944364: strh w10, [x8, #20] 0x185944368: ldr x8, [x9, 0] 0x18594436c: add x9, x8, 392 0x185944370: ldrh w10, [x8, #20] 0x185944374: orr w10, w10, #0x40 0x185944378: strh w10, [x8, #20] 0x18594437c: ldr x8, [x8, 49] 0x185944380: cbnz x8, 0x18594435c ; SKCSprite::removeSubsprite(SKCSprite*) + 144
0x185944384: ldrh w9, [x19, #20] EXC_BAD_ACCESS here.
0x185944388: orr w8, w9, #0x2 0x18594438c: strh w8, [x19, #20] 0x185944390: b 0x185944398 ; SKCSprite::removeSubsprite(SKCSprite*) + 204 0x185944394: ldrh w8, [x19, #20] 0x185944398: tbnz w8, #7, 0x1859443ac ; SKCSprite::removeSubsprite(SKCSprite*) + 224 0x18594439c: orr w8, w8, #0x80 0x1859443a0: strh w8, [x19, #20] 0x1859443a4: ldr x19, [x19, 49] 0x1859443a8: cbnz x19, 0x185944394 ; SKCSprite::removeSubsprite(SKCSprite*) + 200 0x1859443ac: sub sp, fp, #16 0x1859443b0: ldp x20, x19, [sp], #16 0x1859443b4: ldp fp, lr, [sp], #16 0x1859443b8: ret lrUPDATE: New information:
My error:
Stack:
I found out something wrong. My node I want to remove consists of two SKSpriteNodes (my sprite image and its shadow) and one SKShapeNode (a thin black rope). I tried to replace my SKShapeNode rope with a SKSpriteNode rope and I got success — problem gone.
Code to remove my node from parent:
SKAction *moveCloud = [SKAction moveToX:destinationX duration:moveDuration]; [cloud runAction:moveCloud completion:^{ [cloud removeFromParent]; }];Code to add a SKShapeNode rope to my node:
- (void)addRopeToCloud:(SKNode *)cloud { CGFloat maxY = self.scene.size.height; CGFloat length = maxY - [self.scene convertPoint:cloud.position fromNode:cloud.parent].y; CGMutablePathRef path = CGPathCreateMutable(); CGPathMoveToPoint(path, NULL, 0, 0); CGPathAddLineToPoint(path, NULL, 0, length); SKShapeNode *rope = [[SKShapeNode alloc] init]; rope.path = path; rope.strokeColor = [UIColor blackColor]; rope.lineWidth = 0.1; rope.antialiased = YES; rope.zPosition = -0.01; CGFloat threadScale = 1 / cloud.xScale; rope.xScale = threadScale; rope.yScale = threadScale; [cloud addChild:rope]; CGPathRelease(path); }Code to add a SKSpriteNode rope to my node, that resolves the problem:
- (void)addRopeToCloud:(SKNode *)cloud { CGFloat maxY = self.scene.size.height; CGFloat length = maxY - [self.scene convertPoint:cloud.position fromNode:cloud.parent].y; CGSize ropeSize = CGSizeMake(1.5, length); SKSpriteNode *rope = [SKSpriteNode spriteNodeWithColor:[SKColor blackColor] size:ropeSize]; rope.anchorPoint = CGPointMake(0.5, 0); CGFloat ropeScale = 1 / cloud.xScale; rope.xScale = ropeScale; rope.yScale = ropeScale; rope.zPosition = -0.01; [cloud addChild:rope]; }It looks like something wrong in my SKShapeNode adding code, but I can't understand what exactly is.
解决方案I also crash with SKShapeNode when its parent remove from superview in iOS 7.1
My work around is set SKShapeNode property to nil before it remove from parent
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