标签: exc-bad-access

Program received signal:  “EXC_BAD_ACCESS”.
(gdb) bt
#0  0x30011940 in objc_msgSend ()
#1  0x30235f24 in CFRelease ()
#2  0x308f497c in -[UIImage dealloc] ()
#3  0x30236b78 in -[NSObject release] ()
#4  0x30a002a0 in FlushNamedImage ()
#5  0x30250a26 in CFDictionaryApplyFunction ()
#6  0x30a001a4 in _UISharedImageFlushAll ()
#7  0x30a00738 in +[UIImage(UIImageInternal) _flushCacheOnMemoryWarning:] ()
#8  0x3054dc80 in _nsnote_callback ()
#9  0x3024ea58 in _CFXNotificationPostNotification ()
#10 0x3054b85a in -[NSNotificationCenter postNotificationName:object:userInfo:] ()
#11 0x3054dbc0 in -[NSNotificationCenter postNotificationName:object:] ()
#12 0x30a00710 in -[UIApplication _performMemoryWarning] ()
#13 0x30a006a8 in …

当我的应用程序到达此时,我收到EXC_BAD_ACCESS

NSString *nameData = nameTextField.text;
NSString *emailData= emailTextField.text;
NSString *phoneData = phoneTextField.text;
NSString *serviceData =    serviceTextView.text;

NSString *post = [NSString stringWithFormat:@"email_address=&contents=&form_identifier=538b7271-df83-41f5-84b0-db0fed518ade&form_type=1&empty_form_msg=Please%20fill%20in%20something%20before%20submitting.&1_1_10_40_First%2BName=%@&2_1_20_30_Last%2BName=&3_1_25_25_Company=&4_1_30_999_Email=%@&5_1_40_10_Phone=%@&6_1_50_0_Address%2B1=&7_1_60_-10_Address%2B2=&8_1_70_-20_City=&9_3_80_-30_County=&10_3_90_-40_Postcode=&11_2_100_-50_Comments=%@&submit=Send",nameData,emailData,phoneData,serviceData];

这是因为这个字符串中的数据太长了吗？

这里的代码:

- (void)addAnswerWithNumber:(NSString *)numberAnswer
{    
    UIButton *aButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
    [aButton setBackgroundImage:[UIImage imageNamed:@"roundBlue.png"] forState:UIControlStateNormal];
    [aButton addTarget:self action:@selector(removeAnswer:) forControlEvents:UIControlEventTouchUpInside];
    [aButton setTitle:numberAnswer forState:UIControlStateNormal];
    aButton.enabled = YES;
    aButton.titleLabel.font = [UIFont fontWithName:@"HelveticaNeue-Bold" size:18.0];
    aButton.titleLabel.textColor = [UIColor whiteColor];
    aButton.titleLabel.textAlignment = UITextAlignmentCenter;
    [dropableZone addSubview:aButton];
    [buttonList addObject:aButton];
    [aButton release];
    [aButton release];
    if ([buttonList count] > 0) {
        dropHereLabel.text = @"";
        [self repositionRoundButton];
    }else
    {
        dropHereLabel.text = @"Déposez votre ou vos Réponse(s) ici";
    }

}

- (void)repositionRoundButton
{
    int yPos =  ((890 / 2) - (([buttonList count] …

EXC_BAD_ACCESS我编写了一个 Cocoa 应用程序，当我关闭应用程序窗口时出现错误。我读到这个错误通常意味着内存问题，但我已经ARC mode打开并且不需要关心释放等（xCode 禁止我调用这个函数并自动管理内存）。

错误指向return NSApplicationMain(argc, (const char **)argv);主函数中的行。

这是我的应用程序的代码：

.h 文件：

@interface MainDreamer : NSWindow <NSWindowDelegate> 
{    
    NSTextField *dreamField;
    NSTableView *dreamTable;    
    NSImageView *dreamview;

    NSMutableArray *dreamlist;  
    NSMutableArray *dataset;
}

@property (nonatomic, retain) IBOutlet NSTextField *dreamField;
@property (nonatomic, retain) IBOutlet NSTableView *dreamTable;
@property (nonatomic, retain) IBOutlet NSImageView *dreamview;
@property (nonatomic, retain) IBOutlet NSMutableArray *dreamlist;
@property (nonatomic, retain) IBOutlet NSMutableArray *dataset;
@property (assign) IBOutlet NSWindow *window;

@end

.m 文件：

@implementation MainDreamer

@synthesize window;
@synthesize dataset;
@synthesize …

我创建了一个从普通字符串生成属性字符串的方法.在attrString低于价值是它的内容非空和正确的.

在运行我的应用程序时,第二行失败了EXC_BAD_ACCESS.知道为什么吗？

该__bridge_retained呼叫是iOS 5的要求.我也试过,__bridge但没有效果,问题仍然存在.

    NSMutableAttributedString *attrString = (NSMutableAttributedString*)[textLayer attributedString];
    CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((__bridge_retained CFMutableAttributedStringRef)attrString);

UPDATE

如果我做:

    NSMutableAttributedString *attrString = (NSMutableAttributedString*)[textLayer attributedString];
    NSLog(@"%@", attrString);
    CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((__bridge CFMutableAttributedStringRef)attrString);

然后该NSLog行将无法编译; Xcode给出了警告和错误说明"Incompatible pointer types passing 'char[3]' to parameter of type 'NSString *'".

所以我尝试了这个:

    NSLog([attrString description]);

这给出了以下输出(我用<snipped>隐私替换了字符串内容):

2012-01-19 06:49:11.307 WritePath[2475:707] <Snipped> { CTForegroundColor = "<CGColor 0x281530> [<CGColorSpace 0x22d1a0> (kCGColorSpaceDeviceRGB)] ( 0 0 0 1 )"; …

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    @try {
        if ([segue.identifier isEqualToString:@"taskListSegue"])
        {   
            MindMapInformationViewController_iPhone *taskListContentController = [segue destinationViewController];  
            int selectedIndexPath = [[self.tableView indexPathForSelectedRow] row];

            MindMap *newMindMap;
            newMindMap = [mindmaps objectAtIndex:selectedIndexPath];        
            FileManager *fileManager = [[[FileManager alloc] init] autorelease];
            [fileManager readFile:newMindMap.pathToMindmapAtDevice parsing:YES];

            NSMutableArray *taskArray = [fileManager getArray];
            [taskListContentController setTasksOfSelectedMindmap:taskArray];
        }
    }
    @catch (NSException *exception) {

    }
}

-(void)setTasksOfSelectedMindmap:(NSMutableArray *)tasks {
    @try {
        [self initComponents];
        if (tasks != nil) {
            taskArray = tasks;
        }
    }
    @catch (NSException *exception) {

    }

}

-(void)initComponents {
    @try { …

我有以下方法来更新显示简单时间的标签

-(void)updateTimeLabel:(NSTimer *)timer{
    NSInteger secondsSinceStart = (NSInteger)[[NSDate date] timeIntervalSinceDate:_startTime];

    NSInteger seconds = secondsSinceStart % 60;
    NSInteger minutes = (secondsSinceStart / 60) % 60;
    NSInteger hours = secondsSinceStart / (60 * 60);
    NSString *result = nil;
    if (hours > 0) {
        result = [NSString stringWithFormat:@"%02d:%02d:%02d", hours, minutes, seconds];
    }
    else {
    result = [NSString stringWithFormat:@"%02d:%02d", minutes, seconds];
    }

    _totalTime = result;
    _totalTimeLabel.text = result;
}

然后我将其称为按钮操作:

-(IBAction) startTimer{
    _startTime = [NSDate date];
    _walkRouteTimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(updateTimeLabel:) userInfo:nil repeats:YES];
    [_walkRouteTimer …

程序在运行时崩溃了。当我的代码到达 NSMutableArray 时，我使用arryWithObjects方法在其中保存了一些对象，这里是我的代码

(NSMutableArray *) NumSysToNumSysMultiplyMetd:(NSString *)DecCode lenthOfDecCode
                                   :(int)length NumSysMultiplyValue
                                   :(int)value
{

NSString * step1 = DecCode;
int Step2 = 0;
NSString *step2s=@"=> ";
int finalAnswer=0;

for (int i=length,j=0; i >=0; i--,j++)
{
    NSString *digit;


    digit = [NSString stringWithFormat:@"%c",[DecCode characterAtIndex:j]];

    step1 = [step1 stringByAppendingString: [NSString stringWithFormat:@"%@ * %i^%i +  ",digit,value,i]];

    Step2= [digit integerValue] * pow(value, i);

    step2s= [step2s stringByAppendingString:[NSString stringWithFormat:@" %i +",Step2]];

    finalAnswer =finalAnswer +  Step2;

}
NSMutableArray *mut = [NSMutableArray arrayWithObjects:step1,step2s,finalAnswer,nil];
return mut  

我有以下代码:

// Get the matches
var recipieMatches = queryResults[MATCHES_INDEX] as Array<Dictionary<String, AnyObject>>
// Set some global vars
var numberOfRecipiesToDisplay: Int = recipieMatches.count

for i in 0...(numberOfRecipiesToDisplay - 1)
{
    var time:  Int? = ((recipieMatches[i])["totalTimeInSeconds"]) as Int? // THIS LINE
}

我在for循环中的行上得到一个EXC_BAD_ACCESS错误.

我的问题:这怎么可能？我知道recipieMatches[i]是一个值,因为for循环遍历数组的计数.

Apple告诉我,我的应用程序在启动时崩溃了.这是崩溃报告,但我不知道它意味着什么.可能的原因是什么？

CrashReporter Key:   8ebc5eb666109db6d4970a4148cf88160f6805b5
Hardware Model:      xxx
Process:             Music Player [907]
Path:                /private/var/mobile/Containers/Bundle/Application/664B5DFA-4F34-4469-B30D-EC43B25F39E0/Music Player.app/Music Player
Version:             1.0 (1.0)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2015-01-17 10:11:49.478 -0800
Launch Time:         2015-01-17 10:11:28.916 -0800
OS Version:          iOS 8.1 (12B410)
Report Version:      105

Exception Type:  00000020
Exception Codes: 0x000000008badf00d
Highlighted Thread:  0

Application Specific Information:
com.ceto.ocakonbes failed to scene-create in time

Elapsed total CPU time (seconds): 0.270 (user 0.270, system 0.000), 8% CPU 
Elapsed application CPU time (seconds): 0.007, 0% …

我正在尝试完成我的C编程课的作业Xcode。这很简单。它读取一个文本文件，其中包含学生 ID 及其考试成绩的列表。然后它根据这些数据计算总分，并将它们写入另一个文本文件。但是，我不断收到此Bad Access错误消息，内容为：

Thread 1: EXC_BAD_ACCESS(code=1, address=0x7fff00000de4)

我不知道这是什么意思。我该怎么办？