我正试图在我的程序中排序内存问题。
我的程序停在了一行：
label.text = [[[[self.allData objectAtIndex:indexPath.row-1]objectAtIndex:1+[[self.measurments objectAtIndex:(i-1)]intValue]]objectAtIndex:1]stringValue];
whit mesage：
Thread 1: EXC_BREAKPOINT
** -[CFNumber stringValue]: message sent to deallocated instance 0x859add0
我拥有allData和measurments的属性
@property (nonatomic, retain) NSMutableArray *allData;
@property (nonatomic, retain) NSMutableArray *measurments;
我将allData定义为：
self.allData = [[[NSMutableArray alloc] init]autorelease];
self.allData = [self GetTableOfLevel:TableLevel section:TableSection perent:0 array:self._backupData];
其中GetTableOfLevel：TableLevel函数返回NSMutableArray。
之后我将allData保留原样，除非我将其复制为：
self.backupData = [[self.allData copy]autorelease];
有任何人知道它可能出错吗？
我尝试了建议并切换到ARC，但我有一些问题，下载了一些库。
我有SBTableAlert，它看起来像：
//
// --------------------------------------------
// Copyright (C) 2011 by Simon Blommegård
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// --------------------------------------------
//
// SBTableAlert.h
// SBTableAlert
//
// Created by Simon Blommegård on 2011-04-08.
// Copyright 2011 Simon Blommegård. All rights reserved.
//
#import <Foundation/Foundation.h>
#define kTableCornerRadius 5.
typedef enum {
SBTableAlertTypeSingleSelect, // dismiss alert with button index -1 and animated (default)
SBTableAlertTypeMultipleSelct, // dismiss handled by user eg. [alert.view dismiss...];
} SBTableAlertType;
typedef enum {
SBTableAlertStylePlain, // plain white BG and clear FG (default)
SBTableAlertStyleApple, // same style as apple in the alertView for slecting wifi-network (Use SBTableAlertCell)
} SBTableAlertStyle;
// use this class if you would like to use the custom section headers by yourself
@interface SBTableViewSectionHeaderView : UIView {}
@property (nonatomic, copy) NSString *title;
@end
@interface SBTableAlertCell : UITableViewCell {}
- (void)drawCellBackgroundView:(CGRect)r;
@end
@class SBTableAlert;
@protocol SBTableAlertDelegate <NSObject>
@optional
- (CGFloat)tableAlert:(SBTableAlert *)tableAlert heightForRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableAlert:(SBTableAlert *)tableAlert didSelectRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableAlertCancel:(SBTableAlert *)tableAlert;
- (void)tableAlert:(SBTableAlert *)tableAlert clickedButtonAtIndex:(NSInteger)buttonIndex;
- (void)willPresentTableAlert:(SBTableAlert *)tableAlert;
- (void)didPresentTableAlert:(SBTableAlert *)tableAlert;
- (void)tableAlert:(SBTableAlert *)tableAlert willDismissWithButtonIndex:(NSInteger)buttonIndex;
- (void)tableAlert:(SBTableAlert *)tableAlert didDismissWithButtonIndex:(NSInteger)buttonIndex;
@end
@protocol SBTableAlertDataSource <NSObject>
@required
- (UITableViewCell *)tableAlert:(SBTableAlert *)tableAlert cellForRowAtIndexPath:(NSIndexPath *)indexPath;
- (NSInteger)tableAlert:(SBTableAlert *)tableAlert numberOfRowsInSection:(NSInteger)section;
@optional
- (NSInteger)numberOfSectionsInTableAlert:(SBTableAlert *)tableAlert; // default 1
- (NSString *)tableAlert:(SBTableAlert *)tableAlert titleForHeaderInSection:(NSInteger)section;
@end
@interface SBTableAlert : NSObject <UITableViewDelegate, UITableViewDataSource, UIAlertViewDelegate> {}
@property (nonatomic, retain) UIAlertView *view;
@property (nonatomic, retain) UITableView *tableView;
@property (nonatomic) SBTableAlertType type;
@property (nonatomic) SBTableAlertStyle style;
@property (nonatomic) NSInteger maximumVisibleRows; // default 4, (nice in both orientations w/ rowHeigh == 40), if -1 is passed it will display the whole table.
@property (nonatomic) CGFloat rowHeight; // default 40, (default in UITableView == 44)
@property (nonatomic, assign) id <SBTableAlertDelegate> delegate;
@property (nonatomic, assign) id <SBTableAlertDataSource> dataSource;
@property (nonatomic, assign) id <UITableViewDelegate> tableViewDelegate; // default self, (set other for more advanded use)
@property (nonatomic, assign) id <UITableViewDataSource> tableViewDataSource; // default self, (set other for more advanded use)
@property (nonatomic, assign) id <UIAlertViewDelegate> alertViewDelegate; // default self, (set other for more advanded use)
- (id)initWithTitle:(NSString *)title cancelButtonTitle:(NSString *)cancelTitle messageFormat:(NSString *)message, ...;
+ (id)alertWithTitle:(NSString *)title cancelButtonTitle:(NSString *)cancelTitle messageFormat:(NSString *)message, ...;
- (void)show;
@end
//
// --------------------------------------------
// Copyright (C) 2011 by Simon Blommegård
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// --------------------------------------------
//
// SBTableAlert.m
// SBTableAlert
//
// Created by Simon Blommegård on 2011-04-08.
// Copyright 2011 Simon Blommegård. All rights reserved.
//
#import "SBTableAlert.h"
#import <QuartzCore/QuartzCore.h>
@interface SBTableViewTopShadowView : UIView {}
@end
@implementation SBTableViewTopShadowView
- (void)drawRect:(CGRect)rect {
[super drawRect:rect];
CGContextRef context = UIGraphicsGetCurrentContext();
// Draw top shadow
CGFloat colors [] = {
0, 0, 0, 0.4,
0, 0, 0, 0,
};
CGColorSpaceRef baseSpace = CGColorSpaceCreateDeviceRGB();
CGGradientRef gradient = CGGradientCreateWithColorComponents(baseSpace, colors, NULL, 2);
CGColorSpaceRelease(baseSpace), baseSpace = NULL;
CGPoint startPoint = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMinY(self.bounds));
CGPoint endPoint = CGPointMake(CGRectGetMidX(self.bounds), 8);
CGContextDrawLinearGradient(context, gradient, startPoint, endPoint, 0);
CGGradientRelease(gradient), gradient = NULL;
}
@end
@interface SBTableView : UITableView {}
@property (nonatomic) SBTableAlertStyle alertStyle;
@end
@implementation SBTableView
@synthesize alertStyle=_alertStyle;
- (void)drawRect:(CGRect)rect {
CGContextRef context = UIGraphicsGetCurrentContext();
if (_alertStyle == SBTableAlertStyleApple) {
// Draw background gradient
CGFloat colors [] = {
0.922, 0.925, 0.933, 1,
0.749, 0.753, 0.761, 1,
};
CGColorSpaceRef baseSpace = CGColorSpaceCreateDeviceRGB();
CGGradientRef gradient = CGGradientCreateWithColorComponents(baseSpace, colors, NULL, 2);
CGColorSpaceRelease(baseSpace), baseSpace = NULL;
CGPoint startPoint = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMinY(self.bounds));
CGPoint endPoint = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMaxY(self.bounds));
CGContextDrawLinearGradient(context, gradient, startPoint, endPoint, 0);
CGGradientRelease(gradient), gradient = NULL;
}
[super drawRect:rect];
}
@end
@interface SBTableAlertCellBackgroundView : UIView
@end
@implementation SBTableAlertCellBackgroundView
- (void)drawRect:(CGRect)r {
[(SBTableAlertCell *)[self superview] drawCellBackgroundView:r];
}
@end
@implementation SBTableViewSectionHeaderView
@synthesize title=_title;
- (id)initWithTitle:(NSString *)title {
if ((self = [super initWithFrame:CGRectZero])) {
[self setTitle:title];
[self setBackgroundColor:[UIColor colorWithRed:0.165 green:0.224 blue:0.376 alpha:0.85]];
}
return self;
}
- (void)dealloc {
[self setTitle:nil];
[super dealloc];
}
- (void)drawRect:(CGRect)rect {
[super drawRect:rect];
CGContextRef context = UIGraphicsGetCurrentContext();
[[UIColor colorWithWhite:0 alpha:0.8] set];
[_title drawAtPoint:CGPointMake(10, 4) withFont:[UIFont boldSystemFontOfSize:12]];
[[UIColor whiteColor] set];
[_title drawAtPoint:CGPointMake(10, 5) withFont:[UIFont boldSystemFontOfSize:12]];
CGContextSetLineWidth(context, 1.5);
[[UIColor colorWithWhite:1 alpha:0.35] set];
CGContextMoveToPoint(context, 0, 0);
CGContextAddLineToPoint(context, self.bounds.size.width, 0);
CGContextStrokePath(context);
[[UIColor colorWithWhite:0 alpha:0.35] set];
CGContextMoveToPoint(context, 0, self.bounds.size.height);
CGContextAddLineToPoint(context, self.bounds.size.width, self.bounds.size.height);
CGContextStrokePath(context);
}
@end
@interface SBTableAlertCell ()
@property (nonatomic, retain) SBTableAlertCellBackgroundView *cellBackgroundView;
@end
@implementation SBTableAlertCell
@synthesize cellBackgroundView = _cellBackgroundView;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if((self = [super initWithStyle:style reuseIdentifier:reuseIdentifier])) {
CGRect frame = CGRectMake(0.0, 0.0, self.contentView.bounds.size.width, self.contentView.bounds.size.height);
_cellBackgroundView = [[SBTableAlertCellBackgroundView alloc] initWithFrame:frame];
[_cellBackgroundView setBackgroundColor:[UIColor clearColor]];
[_cellBackgroundView setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
[self setBackgroundView:_cellBackgroundView];
[_cellBackgroundView release];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(setNeedsDisplay) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
}
return self;
}
- (void)dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
[super dealloc];
}
- (void)layoutSubviews {
[super layoutSubviews];
float editingOffset = 0.;
if (self.editing)
editingOffset = -self.contentView.frame.origin.x;
_cellBackgroundView.frame = CGRectMake(editingOffset,
_cellBackgroundView.frame.origin.y,
self.frame.size.width - editingOffset,
_cellBackgroundView.frame.size.height);
[self.textLabel setBackgroundColor:[UIColor clearColor]];
[self.detailTextLabel setBackgroundColor:[UIColor clearColor]];
[self setBackgroundColor:[UIColor clearColor]];
[self setNeedsDisplay];
}
- (void)setNeedsDisplay {
[super setNeedsDisplay];
[_cellBackgroundView setNeedsDisplay];
}
- (void)drawCellBackgroundView:(CGRect)r {
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetLineWidth(context, 1.5);
[[UIColor colorWithWhite:1 alpha:0.8] set];
CGContextMoveToPoint(context, 0, 0);
CGContextAddLineToPoint(context, self.bounds.size.width, 0);
CGContextStrokePath(context);
[[UIColor colorWithWhite:0 alpha:0.35] set];
CGContextMoveToPoint(context, 0, self.bounds.size.height);
CGContextAddLineToPoint(context, self.bounds.size.width, self.bounds.size.height);
CGContextStrokePath(context);
}
@end
@interface SBTableAlert ()
@property (nonatomic, retain) SBTableViewTopShadowView *shadow;
@property (nonatomic, assign) BOOL presented;
- (id)initWithTitle:(NSString *)title cancelButtonTitle:(NSString *)cancelTitle messageFormat:(NSString *)format args:(va_list)args;
- (void)increaseHeightBy:(CGFloat)delta;
- (void)layout;
@end
@implementation SBTableAlert
@synthesize view=_alertView;
@synthesize tableView=_tableView;
@synthesize type=_type;
@synthesize style=_style;
@synthesize maximumVisibleRows=_maximumVisibleRows;
@synthesize rowHeight=_rowHeight;
@synthesize delegate=_delegate;
@synthesize dataSource=_dataSource;
@dynamic tableViewDelegate;
@dynamic tableViewDataSource;
@dynamic alertViewDelegate;
@synthesize shadow = _shadow;
@synthesize presented = _presented;
- (id)initWithTitle:(NSString *)title cancelButtonTitle:(NSString *)cancelTitle messageFormat:(NSString *)format args:(va_list)args {
if ((self = [super init])) {
NSString *message = format ? [[[NSString alloc] initWithFormat:format arguments:args] autorelease] : nil;
_alertView = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:cancelTitle otherButtonTitles:nil];
_maximumVisibleRows = 4;
_rowHeight = 40.;
_tableView = [[SBTableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
[_tableView setDelegate:self];
[_tableView setDataSource:self];
[_tableView setBackgroundColor:[UIColor whiteColor]];
[_tableView setRowHeight:_rowHeight];
[_tableView setSeparatorColor:[UIColor lightGrayColor]];
[_tableView.layer setCornerRadius:kTableCornerRadius];
[_alertView addSubview:_tableView];
_shadow = [[SBTableViewTopShadowView alloc] initWithFrame:CGRectZero];
[_shadow setBackgroundColor:[UIColor clearColor]];
[_shadow setHidden:YES];
[_shadow.layer setCornerRadius:kTableCornerRadius];
[_shadow.layer setMasksToBounds:YES];
[_alertView addSubview:_shadow];
[_alertView bringSubviewToFront:_shadow];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(layoutAfterSomeTime) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
}
return self;
}
- (id)initWithTitle:(NSString *)title cancelButtonTitle:(NSString *)cancelTitle messageFormat:(NSString *)message, ... {
va_list list;
va_start(list, message);
self = [self initWithTitle:title cancelButtonTitle:cancelTitle messageFormat:message args:list];
va_end(list);
return self;
}
+ (id)alertWithTitle:(NSString *)title cancelButtonTitle:(NSString *)cancelTitle messageFormat:(NSString *)message, ... {
return [[[SBTableAlert alloc] initWithTitle:title cancelButtonTitle:cancelTitle messageFormat:message] autorelease];
}
- (void)dealloc {
[self setTableView:nil];
[self setView:nil];
[self setShadow:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self];
[super dealloc];
}
#pragma mark -
- (void)show {
[_tableView reloadData];
[_alertView show];
}
#pragma mark - Properties
- (void)setStyle:(SBTableAlertStyle)style {
if (style == SBTableAlertStyleApple) {
[_tableView setSeparatorStyle:UITableViewCellSeparatorStyleNone];
[(SBTableView *)_tableView setAlertStyle:SBTableAlertStyleApple];
[_shadow setHidden:NO];
} else if (style == SBTableAlertStylePlain) {
[_tableView setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];
[(SBTableView *)_tableView setAlertStyle:SBTableAlertStylePlain];
[_shadow setHidden:YES];
}
_style = style;
}
- (id<UITableViewDelegate>)tableViewDelegate {
return _tableView.delegate;
}
- (void)setTableViewDelegate:(id<UITableViewDelegate>)tableViewDelegate {
[_tableView setDelegate:tableViewDelegate];
}
- (id<UITableViewDataSource>)tableViewDataSource {
return _tableView.dataSource;
}
- (void)setTableViewDataSource:(id<UITableViewDataSource>)tableViewDataSource {
[_tableView setDataSource:tableViewDataSource];
}
- (id<UIAlertViewDelegate>)alertViewDelegate {
return _alertView.delegate;
}
- (void)setAlertViewDelegate:(id<UIAlertViewDelegate>)alertViewDelegate {
[_alertView setDelegate:alertViewDelegate];
}
#pragma mark - Private
- (void)increaseHeightBy:(CGFloat)delta {
CGPoint c = _alertView.center;
CGRect r = _alertView.frame;
r.size.height += delta;
_alertView.frame = r;
_alertView.center = c;
_alertView.frame = CGRectIntegral(_alertView.frame);
for(UIView *subview in [_alertView subviews]) {
if([subview isKindOfClass:[UIControl class]]) {
CGRect frame = subview.frame;
frame.origin.y += delta;
subview.frame = frame;
}
}
}
- (void)layout {
CGFloat height = 0.;
NSInteger rows = 0;
for (NSInteger section = 0; section < [_tableView numberOfSections]; section++) {
for (NSInteger row = 0; row < [_tableView numberOfRowsInSection:section]; row++) {
height += [_tableView.delegate tableView:_tableView heightForRowAtIndexPath:[NSIndexPath indexPathForRow:row inSection:section]];
rows ++;
}
}
CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat avgRowHeight = height / rows;
CGFloat resultHeigh;
if(height > screenRect.size.height) {
if(UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation))
resultHeigh = screenRect.size.height - _alertView.frame.size.height - 65.;
else
resultHeigh = screenRect.size.width - _alertView.frame.size.height - 65.;
}
else if (_maximumVisibleRows == -1 || rows <= _maximumVisibleRows)
resultHeigh = _tableView.contentSize.height;
else
resultHeigh = (avgRowHeight * _maximumVisibleRows);
[self increaseHeightBy:resultHeigh];
[_tableView setFrame:CGRectMake(12,
_alertView.frame.size.height - resultHeigh - 65,
_alertView.frame.size.width - 24,
resultHeigh)];
[_shadow setFrame:CGRectMake(_tableView.frame.origin.x,
_tableView.frame.origin.y,
_tableView.frame.size.width,
8)];
}
- (void)layoutAfterSomeTime{
[NSTimer scheduledTimerWithTimeInterval:0.0 target:self selector:@selector(layout) userInfo:nil repeats:NO];
}
#pragma mark -
#pragma mark UITableViewDelegate
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
if ([_delegate respondsToSelector:@selector(tableAlert:heightForRowAtIndexPath:)])
return [_delegate tableAlert:self heightForRowAtIndexPath:indexPath];
return _rowHeight;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (_type == SBTableAlertTypeSingleSelect)
[_alertView dismissWithClickedButtonIndex:-1 animated:YES];
if ([_delegate respondsToSelector:@selector(tableAlert:didSelectRowAtIndexPath:)])
[_delegate tableAlert:self didSelectRowAtIndexPath:indexPath];
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
if ([_dataSource respondsToSelector:@selector(tableAlert:titleForHeaderInSection:)]) {
NSString *title = [_dataSource tableAlert:self titleForHeaderInSection:section];
if (!title)
return nil;
return [[[SBTableViewSectionHeaderView alloc] initWithTitle:title] autorelease];
}
return nil;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
if ([self tableView:tableView viewForHeaderInSection:section])
return 25.;
return 0.;
}
#pragma mark -
#pragma mark UITableViewDataSource
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
return [_dataSource tableAlert:self cellForRowAtIndexPath:indexPath];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [_dataSource tableAlert:self numberOfRowsInSection:section];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if ([_dataSource respondsToSelector:@selector(numberOfSectionsInTableAlert:)])
return [_dataSource numberOfSectionsInTableAlert:self];
return 1;
}
#pragma mark -
#pragma mark UIAlertViewDelegate
- (void)alertViewCancel:(UIAlertView *)alertView {
if ([_delegate respondsToSelector:@selector(tableAlertCancel:)])
[_delegate tableAlertCancel:self];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if ([_delegate respondsToSelector:@selector(tableAlert:clickedButtonAtIndex:)])
[_delegate tableAlert:self clickedButtonAtIndex:buttonIndex];
}
- (void)willPresentAlertView:(UIAlertView *)alertView {
if (!_presented)
[self layout];
_presented = YES;
if ([_delegate respondsToSelector:@selector(willPresentTableAlert:)])
[_delegate willPresentTableAlert:self];
}
- (void)didPresentAlertView:(UIAlertView *)alertView {
if ([_delegate respondsToSelector:@selector(didPresentTableAlert:)])
[_delegate didPresentTableAlert:self];
}
- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex {
if ([_delegate respondsToSelector:@selector(tableAlert:willDismissWithButtonIndex:)])
[_delegate tableAlert:self willDismissWithButtonIndex:buttonIndex];
}
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
_presented = NO;
if ([_delegate respondsToSelector:@selector(tableAlert:didDismissWithButtonIndex:)])
[_delegate tableAlert:self didDismissWithButtonIndex:buttonIndex];
}
@end
我把-fno-objc-arc标志放在上面，但是当我试着打开它时它给了我一个
*** -[SBTableAlert tableView:cellForRowAtIndexPath:]: message sent to deallocated instance 0x816b8c0
错误
我打开它：
SBTableAlert *alert;
alert = [[SBTableAlert alloc] initWithTitle:NSLocalizedString(@"servers", nil) cancelButtonTitle:NSLocalizedString(@"cancel", nil) messageFormat:nil];
[alert setDelegate:self];
[alert setDataSource:self];
[alert.view setTag:1];
[alert show];
任何人都知道如何处理它？</ p>
答案 0 :(得分：2)
神圣的判决，蝙蝠侠！尝试将这些嵌套方法调用分解为多行，因为它会使代码更具可读性。
鉴于最终表达式是生成错误消息的表达式，它看起来像一个数组中的对象 - 叶节点/数据对象 - 被过度释放。
因此，错误在于创建数组的任何东西。
BTW：方法应始终以小写字母开头，绝不应以get为前缀。因此，该方法将是tableFromLevel:section:parent:array:或类似的东西。按照惯例，get*作为前缀保留给通过引用返回东西的方法。访问者也不以get为前缀。
此外，在注释中指出，无需创建空数组，将其分配给self.allData，然后立即覆盖它。由于autorelease而不是泄漏，但没有必要这样做。
首先，构建并分析您的代码。修复它抱怨的任何内容。
接下来，如果仍然发生崩溃，请使用Allocations仪器并启用Zombie detection。它应该允许您查看发送到崩溃对象的保留/释放。