我知道有很多类似的问题，但没有一个答案帮助我解决了我的问题。
当我移动一个窗口时，我有功能：
-(void)flowLayout:(SEssentialsFlowLayout *)flow didDragView:(UIView *)view{
NSLog(@"drag");
BOOL needDeleteFavourites = NO;
CGPoint dragScrollPosition = [flow convertPoint:view.center toView:self];
CGPoint dragPosition = [flow convertPoint:view.center toView:self.scroll];
// original grupe view
UIGroupView * orgGrView = (UIGroupView *)flow.superview.superview;
UIScrollView * orgScroll = (UIScrollView *)flow.superview;
for (SEssentialsFlowLayout * destinationFlow in self.flows) {
// destination grupe view
UIGroupView * grView = (UIGroupView *)destinationFlow.superview.superview;
UIScrollView * scroll = (UIScrollView *)destinationFlow.superview;
if (flow != destinationFlow && grView.grupes.type == GrupeTypeEditable) {
if (CGRectContainsPoint(destinationFlow.superview.superview.frame, dragPosition)) {
view.center = [scroll convertPoint:dragPosition toView:scroll];
// calculate cube space
int numberOfCubeOnScreen = grView.frame.size.width / (grView.frame.size.height * grView.cubeWidth) ;
int delta = grView.frame.size.width - (grView.frame.size.height * grView.cubeWidth * numberOfCubeOnScreen);
float oneDelta = (float) delta/(numberOfCubeOnScreen );
// destination grupe view
int numberOfpage = ceil((grView.frame.size.height * grView.cubeWidth + oneDelta)* (destinationFlow.managedViews.count + 2) / grView.frame.size.width);
destinationFlow.frame = CGRectMake(0, 0, grView.frame.size.width * numberOfpage, grView.frame.size.height * 0.68);
scroll.contentSize = CGSizeMake(destinationFlow.frame.size.width, destinationFlow.frame.size.height);
[grView.pageControll setNumberOfPages:numberOfpage];
if (orgGrView.grupes.type == GrupeTypeNotEditable) {
// grabcube view
UICubeVeiw * oldCubeView = (UICubeVeiw *)view;
// create new cube and new cube view
Cube * newCube = [oldCubeView.cube copyCube];
UICubeVeiw * newCubeVew = [oldCubeView copyCubeView:oldCubeView.cube];
// copy new cube into old cube view
oldCubeView.cube = newCube;
// add new cube view on old flow
int newIndex = [flow.managedViews indexOfObject:view];
if (newIndex > 0 && newIndex< flow.managedViews.count) {
[flow unmanageSubview:view];
[flow addManagedSubview:newCubeVew atIndex:newIndex];
// move old cube view on new flow
[destinationFlow addManagedSubview:view];
}
}
else{
// original grupe view
int orgNumberOfpage = ceil((orgGrView.frame.size.height * grView.cubeWidth +oneDelta ) * (flow.managedViews.count ) / orgGrView.frame.size.width);
flow.frame = CGRectMake(0, 0, orgGrView.frame.size.width * orgNumberOfpage, orgGrView.frame.size.height * 0.68);
orgScroll.contentSize = CGSizeMake(flow.frame.size.width, flow.frame.size.height);
[orgGrView.pageControll setNumberOfPages:orgNumberOfpage];
[flow unmanageSubview:view];
[destinationFlow addManagedSubview:view];
[orgGrView.grupes removeCube:((UICubeVeiw *)view).cube];
}
needDeleteFavourites = YES;
}
}
}
NSLog(@"pozicija originala : %f ", orgGrView.grupes.positionIndex);
if (orgGrView.grupes.positionIndex == 1 && needDeleteFavourites && orgGrView.grupes.cubes.count<1) {
NSLog(@"remove");
[self removeFavouritesFromView];
}
// move scroll view up and down
if (dragScrollPosition.y < self.frame.size.height * 0.16) {
NSLog(@"move down");
if (!self.timerIsSet) {
NSLog(@"move down 1");
self.timerIsSet = YES;
NSLog(@"move down 2");
self.timer = [NSTimer scheduledTimerWithTimeInterval:0.5f target:self selector:@selector(moveScrollVeiwUp) userInfo:nil repeats:NO ];
}
}
else if (dragScrollPosition.y > self.frame.size.height * 0.88) {
if (!self.timerIsSet) {
NSLog(@"move up");
self.timerIsSet = YES;
self.timer = [NSTimer scheduledTimerWithTimeInterval:0.5f target:self selector:@selector(moveScrollVeiwDown) userInfo:nil repeats:NO ];
}
}
else{
NSLog(@"move none");
self.timerIsSet = NO;
[self.timer invalidate];
self.timer = nil;
self.isFavouriteCurrentlyVisible = NO;
}
}
我知道这是很多代码，但当我移动这个窗口时，我得到了一个奇怪的错误：
pozicija originala : 1.000000
2013-09-23 20:20:31.772 BIView Mobile[659:60b] move down
2013-09-23 20:20:31.774 BIView Mobile[659:60b] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 2147483646 beyond bounds [0 .. 5]'
*** First throw call stack:
(0x2db25f53 0x382996af 0x2da5c5f3 0x94667 0x942a1 0x93f1f 0x92171 0x918bf 0x91759 0x3041d98d 0x302c83e3 0x30652eed 0x3028f28b 0x3028d9d3 0x302c6c41 0x302c65e7 0x3029ba25 0x3029a221 0x2daf118b 0x2daf065b 0x2daeee4f 0x2da59ce7 0x2da59acb 0x32734283 0x302fba41 0x71655 0x387a1ab7)
libc++abi.dylib: terminating with uncaught exception of type NSException
这意味着，如果我理解正确的话，我应该在某处找到一些无效的索引并用它来查看数组。
但我总是检查索引是否在可接受值的范围内。
编辑：
据我所知，我放了异常断点，但不幸的是断点停止了：
int main(int argc, char *argv[])
{
@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}
}
如果有帮助，我打印出堆栈跟踪：
2013-09-24 11:48:10.683 BIView Mobile[890:60b] Uncaught exception: *** -[__NSArrayM objectAtIndex:]: index 2147483646 beyond bounds [0 .. 2]
2013-09-24 11:48:10.755 BIView Mobile[890:60b] Stack trace: (
0 CoreFoundation 0x2db25f6b <redacted> + 154
1 libobjc.A.dylib 0x382996af objc_exception_throw + 38
2 CoreFoundation 0x2da5c5f3 <redacted> + 230
3 BIView Mobile 0x000e34ef -[FlowPicker isLeftMost:inOrdering:] + 58
4 BIView Mobile 0x000e3129 -[FlowPicker widenedSubviewExcludingView:inOrdering:] + 640
5 BIView Mobile 0x000e2da7 -[FlowPicker indexOfPoint:currentBounds:currentIndex:inOrdering:excludingView:] + 118
6 BIView Mobile 0x000e0ff9 -[FlowEdit changeEdit:] + 524
7 BIView Mobile 0x000e0747 -[FlowEdit fireChangeEdit:afterTimeout:] + 342
8 BIView Mobile 0x000e05e1 -[FlowEdit handleLongPress:] + 360
9 UIKit 0x3041d98d <redacted> + 196
10 UIKit 0x302c83e3 <redacted> + 1138
11 UIKit 0x30652eed <redacted> + 48
12 UIKit 0x3028f28b <redacted> + 218
13 UIKit 0x3028d9d3 <redacted> + 282
14 UIKit 0x302c6c41 <redacted> + 772
15 UIKit 0x302c65e7 <redacted> + 666
16 UIKit 0x3029ba25 <redacted> + 196
17 UIKit 0x3029a221 <redacted> + 7096
18 CoreFoundation 0x2daf118b <redacted> + 14
19 CoreFoundation 0x2daf065b <redacted> + 206
20 CoreFoundation 0x2daeee4f <redacted> + 622
21 CoreFoundation 0x2da59ce7 CFRunLoopRunSpecific + 522
22 CoreFoundation 0x2da59acb CFRunLoopRunInMode + 106
23 GraphicsServices 0x32734283 GSEventRunModal + 138
24 UIKit 0x302fba41 UIApplicationMain + 1136
25 BIView Mobile 0x000bf55b main + 226
26 libdyld.dylib 0x387a1ab7 <redacted> + 2
)
答案 0 :(得分：0)
在某些体系结构上返回的索引2147483646恰好是NSNotFound。您的一条陈述（可能[flow.managedViews indexOfObject:view]）似乎正在返回NSNotFound，您应该检查它。