Question

我正在使用导航控制器，我的第一个视图包含章节类型和数据的表格然后当用户选择其中任何一个进入下一个主题类型视图时，当用户选择其中任何一个时，它应该显示一些数据表包括节标题和标尺项... 应用程序在我选择主题时崩溃，因此它不显示部分的第3个视图... 控制台显示一些错误日志我在这附近......

在第二个视图中选择行方法我有问题，当我在这里更改变量时它的影响o / p

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // Navigation logic -- create and push a new view controller

    if(TviewController == nil)
    TviewController = [[TopicRulesViewController alloc] initWithNibName:@"TopicRulesViewController" bundle:[NSBundle mainBundle]];

    Topic *bTopic = [bchapter.topics objectAtIndex:indexPath.row];
WHEN I CHANGED THIS VARIABLE BCHAPTER.TOPICS ITS GIVING EMPTY VIEW...   
        TviewController.aTopic = bTopic;
    TVIEWCONTROLLER IS THE THIRD VIEW CONTROLLER ....



    [self.navigationController pushViewController:TviewController animated:YES];
}

[Session started at 2010-07-20 07:36:03 -0700.]
2010-07-20 07:36:06.740 UpWrite[69558:207] No Errors
2010-07-20 07:36:09.850 UpWrite[69558:207] No Errors
2010-07-20 07:36:11.393 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b675d0 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x5f29 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.396 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b5a160 of class WebEditorUndoTarget autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317e9ee 0x317dd8d 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.397 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3910400 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x317ea5c 0x317ddf3 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.400 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3953fc0 of class NSPathStore2 autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1e0d0 0x1d159 0x1d07a 0x317ddf3 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.402 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b25240 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x2559f16 0x2559e08 0x317f9e2 0x317f548 0x25d0c1a 0x25d037a 0x25d02a5 0x25d020e 0x25cfa25 0x317ecc7 0x317eb36 0x317de71 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.403 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b45a70 of class NSInvocation autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x25adf33 0x2be69c8 0x25adebb 0x25c2ec8 0x25c2d64 0x25c298b 0x25c290e 0x25d41d8 0x25cfa5c 0x317ecc7 0x317eb36 0x317de71 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.408 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208a44 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318204c 0x31815a5 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.409 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208ae4 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x318208c 0x31815d1 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.410 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208a94 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x31820cc 0x3181655 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.411 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208aa4 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x318210c 0x3181676 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.412 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208a84 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x318214c 0x3181697 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.414 UpWrite[69558:207] load data.............
2010-07-20 07:36:11.414 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208ad4 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x318218c 0x31816e0 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.419 UpWrite[69558:207]  view will appear...........
2010-07-20 07:36:11.424 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.425 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.425 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.425 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.425 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.425 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.426 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.426 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.426 UpWrite[69558:207] height for row...........
2010-07-20 07:36:11.427 UpWrite[69558:207] cell for row.................
2010-07-20 07:36:11.421 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208b14 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x31821cc 0x3181768 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.427 UpWrite[69558:207] cell for row.................
2010-07-20 07:36:11.429 UpWrite[69558:207] cell for row.................
2010-07-20 07:36:11.429 UpWrite[69558:207] cell for row.................
2010-07-20 07:36:11.429 UpWrite[69558:207] cell for row.................
2010-07-20 07:36:11.430 UpWrite[69558:207] cell for row.................
2010-07-20 07:36:11.430 UpWrite[69558:207] cell for row.................
2010-07-20 07:36:11.428 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x396b900 of class NSPathStore2 autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1e0d0 0x3e18f 0x3e0da 0x318185a 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.436 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x31822dc 0x31818c8 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.437 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c608 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318231c 0x31818f1 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.438 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208ac4 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x318235c 0x318191a 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.441 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208ab4 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x318239c 0x318193b 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.445 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x31823dc 0x318195c 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.446 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318241c 0x3181985 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.504 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318245c 0x31819ae 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.507 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208af4 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x318249c 0x31819d7 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.508 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208b04 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x31824dc 0x3181a5f 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.509 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208b04 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317eaaa 0x318251c 0x3181ae7 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.510 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318255c 0x3181b65 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.511 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x39222a0 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x318259c 0x3181b8e 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.512 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318273c 0x31826f2 0x3181c09 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.513 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c608 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x3182819 0x3181c32 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.518 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318285c 0x3181c5b 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.545 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c608 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x318289c 0x3181c84 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.546 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208a24 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x1f4ba 0x31828f1 0x3181cad 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.547 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3208a34 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x1f4ba 0x3182981 0x3181cfb 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.562 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c608 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x31829bc 0x3181d13 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.568 UpWrite[69558:207] web view load complete...........
2010-07-20 07:36:11.569 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x39bc350 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x3182a41 0x31829fc 0x3181d40 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.571 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3998c20 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x3182abc 0x3181d5b 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.572 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x39a2400 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x3182a41 0x3182afc 0x3181d83 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.574 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c608 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x3182b3c 0x3181dd4 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.577 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c608 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x3182b7c 0x3181dfd 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.578 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x1c8c600 of class NSCFBoolean autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x317d871 0x317d829 0x3182bbc 0x3181e26 0x317df98 0x317db57 0x317da7c 0x317da06 0x407ed6 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.579 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3baaaf0 of class WAKClipView autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x25a6577 0x3183035 0x254c1ec 0x254c1bc 0x254c1bc 0x254c1bc 0x254c1bc 0x25a638d 0x400b40 0x407f28 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.580 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3903f60 of class UIDefaultWebViewInteractionDelegate autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x400c4a 0x407f28 0x414caf 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.589 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3907a70 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x4004d0 0x40028c 0x414ccd 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.590 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x398db50 of class NSCFDictionary autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x1bd20fc 0x4004f0 0x40028c 0x414ccd 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.591 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x398db90 of class NSConcreteNotification autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x400520 0x40028c 0x414ccd 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.598 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x39bc350 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x317d958 0x3182a41 0x31905eb 0x31905a3 0x415255 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.603 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x394db40 of class NSPathStore2 autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1e0d0 0x3e18f 0x3e0da 0x31c3242 0x415295 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.604 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x39519d0 of class NSCFString autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x4152c6 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.605 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b5ffa0 of class NSConcreteValue autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x2b0783 0x4164c5 0x415310 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.606 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3bdeeb0 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x41653b 0x415310 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.607 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3bb8740 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x407587 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.608 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b54830 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x4075c1 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.609 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b9dc90 of class WebBackForwardList autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x3186be1 0x407610 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.610 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3bf8e80 of class NSCFNumber autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x4076f4 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.611 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b10890 of class NSInvocation autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x25adf33 0x2be69c8 0x25adebb 0x25c2ec8 0x25c2d64 0x25c298b 0x25c290e 0x25c28db 0x25b2ae4 0x25de5b7 0x3190346 0x31901c4 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.612 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b57c30 of class NSInvocation autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x1bee4b7 0x1bca6c2 0x3187df3 0x25b292a 0x25de5b7 0x3190346 0x31901c4 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.613 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3b53730 of class NSInvocation autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x25adf33 0x31d0114 0x3187e51 0x25c52dd 0x25b298d 0x25de5b7 0x3190346 0x31901c4 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.614 UpWrite[69558:440f] *** _NSAutoreleaseNoPool(): Object 0x3bf8590 of class NSInvocation autoreleased with no pool in place - just leaking
Stack: (0xbb6bf 0x1ce62 0x1bee4b7 0x1bca6c2 0x3187e80 0x25c52dd 0x25b298d 0x25de5b7 0x3190346 0x31901c4 0x3fff35 0x415333 0x415bed 0x5fb5 0x22f7d 0x22b18 0x91f8f81d 0x91f8f6a2)
2010-07-20 07:36:11.624 UpWrite[69558:440f] bool _WebTryThreadLock(bool), 0x3b108f0: Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit from a secondary thread. Crashing now...

Answer 1

您缺少NSAutoreleasePool的实例，可能是因为您的方法在另一个线程上执行。

只需创建它，然后在方法结束时释放它：

NSAutoreleasePool * pool = [ [ NSAutoreleasePool alloc ] init ];
/* your code... */
[ pool release ];

NSAutoreleasePool负责释放发送“autorelease”消息的对象。
请注意，使用便捷构造函数时，会自动释放对象。因此，如果您没有池，则不会释放对象。

主线程上存在一个池，但对于在其他线程上执行的方法，需要手动创建它。

请注意，您可以在同一个线程中拥有多个NSAutoreleasePool实例。避免长时间保留循环有时很有用。

Answer 2

您崩溃是因为您自动释放了一些没有auto-release pool的对象自动释放池是一个对象，用于保存发送 autorelease 消息的对象，并在收到消息消息时负责释放它们。
Cocoa希望总是有一个自动释放池。

如果没有更多上下文，为什么没有自动发布池很难说。

当您的应用启动时，在main.m中，会创建一个自动发布池。也许你修改了这段代码？
或者您创建了一个新线程，但没有创建自动发布池。

无论如何，这里是如何创建一个：

NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
// Your code goes here
[pool release];

Answer 3

您的第一个问题是，与此处已提到的其他社区成员一样，您正在运行未分配NSAutoreleasePool或“包装”的线程。但我相信你的主要问题是，你试图在屏幕上从另一个线程绘制一些东西而不是用户界面分配的东西。

永远不要调用任何操作来自不同线程的UI元素的消息。原因是图形缓冲区和其他适当的内存不是线程安全的。这样做会导致未定义的行为，断言失败或只是崩溃。当您需要从另一个线程更新任何UI元素时，通过调用

将您的消息放入适当的runloop中

[objectToUpdate performSelectorOnMainThread:withObject:waitUntilDone:]

或使用您使用的任何同步机制。上面的消息将消息放入主线程的runloop队列中。它将在下次运行循环时执行，但是在正确的线程中。当然，前提条件是您在主踏板中初始化了UI元素（99％的应用程序都是这种情况）。否则你可以打电话给

[objectToUpdate performSelector:onThread:withObject:waitUntilDone:]

消息来解决任何其他线程。

由于NSAUTORELEASEPOOL而导致我的应用程序崩溃

3 个答案: