调试器消息 [英] Debugger message
本文介绍了调试器消息的处理方法，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
当我更改segmentedItem并快速请求应用程序崩溃时，我使用UISegmentedControl进行Web服务请求，并显示以下消息:
I do webservice requests with a UISegmentedControl, when I change segmentedItem and request fast the application crashes with this message:
[会议于2011-05-12开始 10:58:50 +0200.]终止于 对SpringBoard终止的回应.
[Session started at 2011-05-12 10:58:50 +0200.] Terminating in response to SpringBoard's termination.
[会议于2011-05-12开始 11:06:31 +0200.] GNU gdb 6.3.50-20050815(Apple版本gdb-1516)(UTC星期五2月11日06:19:43 2011)版权所有2004免费软件 Foundation，Inc. GDB是免费软件， 由GNU General Public报道 许可证，欢迎您更改 它和/或分发它的副本 在某些条件下.键入显示 复制"以查看条件. 对于GDB绝对不做任何保证. 键入显示保修"以获取详细信息.这 GDB被配置为 "--host = i386-apple-darwin --target = arm-apple-darwin.tty/dev/ttys001将程序加载到 调试器…程序已加载.目标 远程移动 /tmp/.XcodeGDBRemote-239-58切换 到远程macosx协议mem 0x1000 0x3fffffff缓存内存0x40000000 0xffffffff无记忆0x00000000 0x0fff 没有运行正在运行…[切换到线程 11779] [切换到线程11779] 共享库Apply-load-rules全部 继续程序收到信号: "SIGKILL".警告:无法阅读 的符号 /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (文件未找到).杀死戒烟
[Session started at 2011-05-12 11:06:31 +0200.] GNU gdb 6.3.50-20050815 (Apple version gdb-1516) (Fri Feb 11 06:19:43 UTC 2011) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "--host=i386-apple-darwin --target=arm-apple-darwin".tty /dev/ttys001 Loading program into debugger… Program loaded. target remote-mobile /tmp/.XcodeGDBRemote-239-58 Switching to remote-macosx protocol mem 0x1000 0x3fffffff cache mem 0x40000000 0xffffffff none mem 0x00000000 0x0fff none run Running… [Switching to thread 11779] [Switching to thread 11779] sharedlibrary apply-load-rules all continue Program received signal: "SIGKILL". warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found). kill quit
调试器已退出，状态为 0.(gdb)
The Debugger has exited with status 0.(gdb)
有人知道如何解决此问题吗?
因为我没有使用NSOperationQueue，这是一个问题吗?
如果是这样的话，我将如何解决此问题，将非常欢迎.
我在运行时找不到任何内存泄漏.
Does anybody have an idea of how can I fix this?
Is this a problem because I'm not using NSOperationQueue?
And if so any suggestions how I can fix this would be very welcomed.
I can not find any memory leaks when running.
下次运行该消息时，该消息已记录:
程序接收到的信号:"EXC_BAD_ACCESS". 警告:无法读取/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3(8J2)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib的符号(找不到文件). (gdb)
Program received signal: "EXC_BAD_ACCESS". warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found). (gdb)
以下是用于启动连接的代码:
类头ServiceGetChildren:
Class header ServiceGetChildren:
#import <Foundation/Foundation.h>
@class Authentication;
@class AttendanceReportViewController;
@interface ServiceGetChildren : NSObject {
Authentication *authentication;
AttendanceReportViewController *attendanceReportViewController;
NSString *username;
NSString *password;
NSMutableString *authenticationString;
NSString *encodedLoginData;
NSMutableData *responseData;
NSMutableArray *childrensArray;
}
@property (nonatomic, retain) NSString *username;
@property (nonatomic, retain) NSString *password;
@property (nonatomic, retain) NSMutableString *authenticationString;
@property (nonatomic, retain) NSString *encodedLoginData;
@property (nonatomic, retain) NSMutableData *responseData;
@property (nonatomic, retain) NSMutableArray *childrensArray;
- (void)startService:(NSURL *)url :(NSString *)method withParent:(UIViewController *)controller;
@end
处理请求的类:
#import "ServiceGetChildren.h"
#import "JSON.h"
#import "Base64.h"
#import "AttendanceReportViewController.h"
#import "Authentication.h"
@implementation ServiceGetChildren
@synthesize appDelegate;
@synthesize username;
@synthesize password;
@synthesize authenticationString;
@synthesize encodedLoginData;
@synthesize responseData;
@synthesize childrensArray;
- (id) init {
if ((self = [super init])) {
}
return self;
}
- (void)startService:(NSURL *)url :(NSString *)method withParent:(UIViewController *)controller {
username = appDelegate.username;
password = appDelegate.password;
attendanceReportViewController = (AttendanceReportViewController *)controller;
Authentication *auth = [[Authentication alloc] init];
authenticationString = (NSMutableString*)[@"" stringByAppendingFormat:@"%@:%@", username, password];
encodedLoginData = [auth encodedAuthentication:authenticationString];
[auth release];
// Setup up the request with the url
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL: url
cachePolicy: NSURLRequestReloadIgnoringCacheData
timeoutInterval: 20.0];
[request setHTTPMethod:method];
[request setValue:[NSString stringWithFormat:@"Basic %@", encodedLoginData] forHTTPHeaderField:@"Authorization"];
NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
// Display the network indicator when the connection request started
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
// Check that the NSURLConnection was successful and then initialize the responseData
if(connection) {
NSLog(@"Connection made");
responseData = [[NSMutableData data] retain];
}
else {
NSLog(@"Connection could not be made");
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
[responseData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responseData appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSLog(@"Connection finished loading.");
// Dismiss the network indicator when connection finished loading
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
// Parse the responseData of json objects retrieved from the service
SBJSON *parser = [[SBJSON alloc] init];
NSString *jsonString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSDictionary *jsonData = [parser objectWithString:jsonString error:nil];
NSMutableArray *array = [jsonData objectForKey:@"Children"];
childrensArray = [NSMutableArray arrayWithArray:array];
// Callback to AttendanceReportViewController that the responseData finished loading
[attendanceReportViewController loadChildren];
[connection release];
[responseData release];
[jsonString release];
[parser release];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
NSLog(@"Connection failure.");
NSLog(@"ERROR%@", error);
// Dismiss the network indicator when connection failure occurred
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[connection release];
// Inform the user that the server was unavailable
}
- (void) dealloc {
[attendanceReportViewController release];
[super dealloc];
}
AttendanceReportViewController的类头:
Class header for AttendanceReportViewController:
#import <UIKit/UIKit.h>
@class ServiceGetGroups;
@class ServiceGetChildren;
@class DetailViewController;
@interface AttendanceReportViewController : UIViewController <UITableViewDataSource, UITableViewDelegate> {
ServiceGetGroups *serviceGetGroups;
ServiceGetChildren *serviceGetChildren;
DetailViewController *detailViewController;
UISegmentedControl *segmentedControl;
IBOutlet UIToolbar *groupsToolbar;
NSMutableArray *btnArray;
NSInteger index;
IBOutlet UITableView *theTableView;
IBOutlet UILabel *attendanceLabel;
IBOutlet UILabel *abscentLabel;
IBOutlet UILabel *totalLabel;
NSMutableDictionary *selectRequestDictionary;
NSMutableDictionary *selectNameDictionary;
NSMutableArray *groupsArray;
NSMutableArray *childrensArray;
NSDictionary *childrensDictionary;
NSURL *url;
}
@property (nonatomic, retain) ServiceGetGroups *serviceGetGroups;
@property (nonatomic, retain) ServiceGetChildren *serviceGetChildren;
@property (nonatomic, retain) DetailViewController *detailViewController;
@property (nonatomic, retain) IBOutlet UIToolbar *groupsToolbar;
@property (nonatomic, retain) IBOutlet UITableView *theTableView;
@property (nonatomic, retain) IBOutlet UILabel *attendanceLabel;
@property (nonatomic, retain) IBOutlet UILabel *abscentLabel;
@property (nonatomic, retain) IBOutlet UILabel *totalLabel;
@property (nonatomic, retain) UISegmentedControl *segmentedControl;
@property (nonatomic) NSInteger index;
@property (nonatomic, retain) NSMutableArray *btnArray;
@property (nonatomic, retain) NSMutableDictionary *selectRequestDictionary;
@property (nonatomic, retain) NSMutableDictionary *selectNameDictionary;
@property (nonatomic, retain) NSMutableArray *groupsArray;
@property (nonatomic, retain) NSMutableArray *childrensArray;
@property (nonatomic, retain) NSDictionary *childrensDictionary;
@property (nonatomic, retain) NSURL *url;
- (void)setupSegmentedControl;
- (void)requestGroups;
- (void)requestChildren:(NSNumber *)groupId;
- (void)loadGroups;
- (void)loadChildren;
@end
使用UISegmentedControl的类:
Class that the Uses the UISegmentedControl:
#import "JSON.h"
#import "AttendanceReportViewController.h"
#import "CustomCellViewController.h"
#import "DetailViewController.h"
#import "ServiceGetGroups.h"
#import "ServiceGetChildren.h"
#import "Group.h"
#import "Child.h"
@implementation AttendanceReportViewController
@synthesize serviceGetGroups;
@synthesize serviceGetChildren;
@synthesize detailViewController;
@synthesize segmentedControl;
@synthesize groupsToolbar;
@synthesize index;
@synthesize btnArray;
@synthesize theTableView;
@synthesize attendanceLabel;
@synthesize abscentLabel;
@synthesize totalLabel;
@synthesize selectRequestDictionary;
@synthesize selectNameDictionary;
@synthesize groupsArray;
@synthesize childrensArray;
@synthesize childrensDictionary;
@synthesize url;
#pragma mark -
#pragma mark View lifecycle
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization.
}
return self;
}
- (void)requestGroups {
NSURL *groupsURL = [NSURL URLWithString:@"http://services/groups"];
[serviceGetGroups startService:groupsURL :@"GET" withParent:self];
}
- (void)requestChildren:(NSNumber *)groupId {
NSLog(@"%@", groupId);
NSString *baseURL = @"http://services/group/";
NSString *method = [NSString stringWithFormat:@"%@%@", groupId, @"/children"];
NSString *theURL = [NSString stringWithFormat:@"%@%@", baseURL, method];
self.url = [NSURL URLWithString:theURL];
NSLog(@"%@", self.url);
[serviceGetChildren startService:self.url :@"GET" withParent:self];
}
- (void)loadGroups {
// Retrieve a array with dictionaries of groups from ServiceGetGroups
self.groupsArray = [[serviceGetGroups.groupsArray copy] autorelease];
// The array to hold segmentedItems for the segmentedControl, representing groups buttons
btnArray = [NSMutableArray arrayWithObjects: @"Alla", nil];
for (NSDictionary *groupDict in groupsArray) {
// Add each groups name to the btnArray as segmentedItems for the segmentedControl
[btnArray addObject:[groupDict objectForKey:@"Name"]];
}
// Create a new NSMutableDictionary with group names as keys and group id´s as values
// used for reference to segementedControl items to make request to serviceGetChildren
self.selectRequestDictionary = [NSMutableDictionary dictionary];
for (NSDictionary *dict in groupsArray) {
[selectRequestDictionary setObject:[dict objectForKey:@"Id"] forKey:[dict objectForKey:@"Name"]];
}
// Create a new NSMutableDictionary with group id´s as keys and group names as values
// used for retrieving a groupName from a passed id
self.selectNameDictionary = [NSMutableDictionary dictionary];
for (NSDictionary *dict in groupsArray) {
[selectNameDictionary setObject:[dict objectForKey:@"Name"] forKey:[dict objectForKey:@"Id"]];
}
[self setupSegmentedControl];
}
- (void)setupSegmentedControl {
// Setup the UISegmentedControl as groups buttons
segmentedControl = nil;
segmentedControl = [[UISegmentedControl alloc] initWithItems:btnArray];
segmentedControl.tintColor = [UIColor darkGrayColor];
segmentedControl.selectedSegmentIndex = 0;
segmentedControl.autoresizingMask = UIViewAutoresizingFlexibleWidth;
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.frame = CGRectMake(0, 0, 300, 30);
// Setup the target and actions for the segmentedControl
[segmentedControl addTarget:self
action:@selector(selectGroup:)
forControlEvents:UIControlEventValueChanged];
// Add the UISegmentedControl as a UIBarButtonItem subview to the UIToolbar
UIBarButtonItem *segmentedItem = [[[UIBarButtonItem alloc] initWithCustomView:segmentedControl] autorelease];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
NSArray *groupsButtons = [NSArray arrayWithObjects:flexSpace, segmentedItem, flexSpace, nil];
[groupsToolbar setItems:groupsButtons];
[flexSpace release];
}
- (void)loadChildren {
// Retrieve a array with dictionaries of children from ServiceGetChildren
self.childrensArray = [[serviceGetChildren.childrensArray copy] autorelease];
// TODO create seperate method - Setup compilation bar values
int total = [childrensArray count];
totalLabel.text = [NSString stringWithFormat:@"%d", total];
[theTableView reloadData];
}
// Handles UIControlEventValueChanged for UISegmentedControl, retreives the name and id for a selected group
- (void)selectGroup:(UISegmentedControl *)theSegmentedControl {
NSString *selectedGroup = [segmentedControl titleForSegmentAtIndex: [segmentedControl selectedSegmentIndex]];
NSNumber *selectedId = [selectRequestDictionary objectForKey:selectedGroup];
// Persist the selectedSegmentIndex when view switches to detaildView
index = [segmentedControl selectedSegmentIndex];
// Request children based on the selected groupId
[self requestChildren:selectedId];
}
- (void)viewDidLoad {
[self requestGroups];
[super viewDidLoad];
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
//self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
#pragma mark -
#pragma mark Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// Return the number of rows in the section.
return [childrensArray count];
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"CustomCell";
// Load from nib
CustomCellViewController *cell = (CustomCellViewController *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray *topLevelObjects = [[NSBundle mainBundle]
loadNibNamed:@"CustomCellView"
owner:nil
options:nil];
for (id currentObject in topLevelObjects) {
if ([currentObject isKindOfClass:[UITableViewCell class]]) {
cell = (CustomCellViewController *) currentObject;
break;
}
}
}
// Set up a children dictionary for easy retrieving specific values to display in the UITableView
childrensDictionary = [childrensArray objectAtIndex:indexPath.row];
NSNumber *idForName = [childrensDictionary valueForKey:@"GroupId"];
NSString *name = [NSString stringWithFormat:@"%@ %@",
[childrensDictionary valueForKey:@"Firstname"],
[childrensDictionary valueForKey:@"Surname"]];
NSString *group = [NSString stringWithFormat:@"%@",
[selectNameDictionary objectForKey:idForName]];
cell.childNameLabel.text = name;
cell.groupNameLabel.text = group;
cell.scheduleLabel.text = @"Schema";
cell.deviationLabel.text = @"Avvikelse";
return cell;
}
#pragma mark -
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// Navigation logic may go here. Create and push the detailedViewController.
if (detailViewController == nil) {
DetailViewController *_detailViewcontroller = [[DetailViewController alloc]
initWithNibName:@"DetailView" bundle:nil];
self.detailViewController = _detailViewcontroller;
[_detailViewcontroller release];
}
childrensDictionary = [childrensArray objectAtIndex:indexPath.row];
NSNumber *idForName = [childrensDictionary valueForKey:@"GroupId"];
NSString *group = [NSString stringWithFormat:@"%@",
[selectNameDictionary objectForKey:idForName]];
[self.detailViewController initWithDetailsSelected:childrensDictionary:group];
[self.navigationController pushViewController:detailViewController animated:YES];
}
#pragma mark -
#pragma mark Memory management
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Relinquish ownership any cached data, images, etc. that aren't in use.
}
- (void)viewDidUnload {
// Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
// For example: self.myOutlet = nil;
segmentedControl = nil;
}
- (void)dealloc {
[segmentedControl release];
[groupsArray release];
[childrensArray release];
[detailViewController release];
[super dealloc];
}
@end
推荐答案
好的，我们开始吧.首先，我无法测试代码，因此我需要您的反馈.
OK here we go. First of all, I could not test the code, so I need your feedback.
此类的主要问题是，您只有一个实例，每当您击中分段控件时都可以重用该实例.这导致创建NSURLConnection的新实例.因此，让我们更正标题中的一些内容.我将NSString属性更改为要复制.请参阅此问题与解答，以了解原因，但这对于改进，只是想让您知道.
The main problem with this class is, you only have one instance, which you reuse every time you hit the segmented control. This leads to creation of new instances of the NSURLConnection. So let's correct a bit in the header. I changed the NSString properties to copy. Have a look at this Q&A to know why, however this is not important for the improvement, just wanted to let you know.
- 我已删除了
Authentication *authentication;，好像您没有使用它. - 添加了NSURLConnection作为属性，因此我们对其进行了引用.
- I've removed
Authentication *authentication;looked like you don't use it. - Added NSURLConnection as property so we keep a reference on it.
头文件
@class Authentication;
@class AttendanceReportViewController;
@interface ServiceGetChildren : NSObject {
AttendanceReportViewController *attendanceReportViewController;
NSString *username;
NSString *password;
NSMutableString *authenticationString;
NSString *encodedLoginData;
NSMutableData *responseData;
NSMutableArray *childrensArray;
NSURLConnection *connection;
}
@property (nonatomic, copy) NSString *username;
@property (nonatomic, copy) NSString *password;
@property (nonatomic, retain) NSMutableString *authenticationString;
@property (nonatomic, copy) NSString *encodedLoginData;
@property (nonatomic, retain) NSMutableData *responseData;
@property (nonatomic, retain) NSMutableArray *childrensArray;
@property (nonatomic, retain) NSURLConnection *connection
- (void)startService:(NSURL *)url :(NSString *)method withParent:(UIViewController *)controller;
@end
接下来是实现文件.我只更改了startService方法和dealloc.
Next comes the Implementation file. I only altered the startService method and dealloc.
- 如果您声明属性，请使用它们:)查看此问题与解答有关合成属性的一些解释.
- 总是释放您拥有的东西，所以我在dealloc中添加了释放代码.
- 取消上一个请求！！！！如果没有，则将邮件发送为nil，这不会造成任何伤害.
- If you declare properties, use them :) Have a look at this Q&A for some explanations on synthesized properties.
- Always release what you own, so I added release code in the dealloc.
- Cancel the previous request!!! If there is none, the message is sent to nil, which causes no harm.
实施文件
- (void)startService:(NSURL *)url:(NSString *)method withParent:(UIViewController *)controller
{
self.username = appDelegate.username;
self.password = appDelegate.password;
[connection cancel];
attendanceReportViewController = (AttendanceReportViewController *)controller;
Authentication *auth = [[Authentication alloc] init];
authenticationString = (NSMutableString *)[@"" stringByAppendingFormat:@"%@:%@", username, password];
self.encodedLoginData = [auth encodedAuthentication:authenticationString];
[auth release];
// Setup up the request with the url
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestReloadIgnoringCacheData
timeoutInterval:20.0];
[request setHTTPMethod:method];
[request setValue:[NSString stringWithFormat:@"Basic %@", encodedLoginData] forHTTPHeaderField:@"Authorization"];
self.connection = [[[NSURLConnection alloc] initWithRequest:request delegate:self] autorelease];
// Display the network indicator when the connection request started
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
// Check that the NSURLConnection was successful and then initialize the responseData
if (connection) {
NSLog(@"Connection made");
self.responseData = [NSMutableData data];
} else {
NSLog(@"Connection could not be made");
}
}
...
- (void) dealloc
{
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[connection cancel];
[connection release];
[appDelegate release];
[responseData release];
[username release];
[password release];
[authenticationString release];
[encodedLoginData release];
[responseData release];
[childrensArray release];
[super dealloc];
}
希望这对后续步骤有所帮助.但是，我认为我们必须对解决方案进行一些努力，直到最终解决方案.
Hope this helps for the next steps. However I think we will have to work a bit on the solution until it's final.
这篇关于调试器消息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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