iphone – iOS5上的NSIndexPath崩溃

概述我的应用程序工作正常,直到iOS5. 我有一个分组的tableview有2个部分.每个部分都有1个选项,使用UITableViewCellAccessoryCheckmark显示. 当我尝试确定是否([lastIndexPath1 isEqual：indexPath])时,我的应用程序在iOS5中崩溃了 更新：以下全部相关代码： lastIndexPath1和lastIndexPath2都是我在头 我的应用程序工作正常,直到iOS5.

我有一个分组的tablevIEw有2个部分.每个部分都有1个选项,使用UItableVIEwCellAccessorycheckmark显示.

当我尝试确定是否([lastIndexPath1 isEqual：indexPath])时,我的应用程序在iOS5中崩溃了

更新：以下全部相关代码：

lastIndexPath1和lastIndexPath2都是我在头文件中声明的NSIndexPath对象.数字1跟踪第0部分中的最后一个indexPath,数字2跟踪第1部分.

- (voID)vIEwDIDLoad{ [super vIEwDIDLoad];    self.vIEw.backgroundcolor = [UIcolor whitecolor];  //Initialize the array.listofItems = [[NSMutableArray alloc] init];NSArray *Fontname = [NSArray arrayWithObjects:@"Baskerville",@"Palatino",@"Times New Roman",@"Verdana",nil];NSDictionary *FontnameInDict = [NSDictionary dictionaryWithObject:Fontname forKey:@"FontOptions"];NSArray *FontSize = [NSArray arrayWithObjects:@"Der var engang",@"Der var engang",nil];NSDictionary *FontSizeInDict = [NSDictionary dictionaryWithObject:FontSize forKey:@"FontOptions"];[listofItems addobject:FontnameInDict];[listofItems addobject:FontSizeInDict];}- (voID)vIEwWillAppear:(BOol)animated {    [super vIEwWillAppear:animated];     NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];    //SET SKRIFTTYPE     Nsstring *neverOpendFonts1 = [prefs objectForKey:@"neverOpendFonts1"];      if (![neverOpendFonts1 isEqualToString:@"1"]) {            lastIndexPath1 = [NSIndexPath indexPathForRow:1 inSection:0];            UItableVIEwCell *newCell = [mytableVIEw cellForRowAtIndexPath:lastIndexPath1];             newCell.accessoryType = UItableVIEwCellAccessorycheckmark;             Nsstring *lastIndexPathString1 = [Nsstring stringWithFormat:@"1"];            [prefs setobject:lastIndexPathString1 forKey:@"lastIndexPath1"];            Nsstring *Fontname = [Nsstring stringWithFormat:@"Palatino"];            [prefs setobject:Fontname forKey:@"Fontname"];            neverOpendFonts1 = [Nsstring stringWithFormat:@"1"];            [prefs setobject:neverOpendFonts1 forKey:@"neverOpendFonts1"];            [prefs synchronize];            NSLog(@"Har aldrig været åbnet - Font options");     }    else    {        NSInteger row = [[prefs objectForKey:@"lastIndexPath1"] intValue];        NSLog(@"Font ROW: %i",row);        lastIndexPath1 = [NSIndexPath indexPathForRow:row inSection:0];        UItableVIEwCell *newCell = [mytableVIEw cellForRowAtIndexPath:lastIndexPath1];         newCell.accessoryType = UItableVIEwCellAccessorycheckmark;     } //SET SKRIFT STØRRELSE    Nsstring *neverOpendFonts2 = [prefs objectForKey:@"neverOpendFonts2"];      if (![neverOpendFonts2 isEqualToString:@"1"]) {        if (UI_USER_INTERFACE_IdioM() == UIUserInterfaceIdiomPad)        {        lastIndexPath2 = [NSIndexPath indexPathForRow:2 inSection:1];        UItableVIEwCell *newCell2 = [mytableVIEw cellForRowAtIndexPath:lastIndexPath2];         newCell2.accessoryType = UItableVIEwCellAccessorycheckmark;         Nsstring *lastIndexPathString2 = [Nsstring stringWithFormat:@"2"];        [prefs setobject:lastIndexPathString2 forKey:@"lastIndexPath2"];        Nsstring *FontSize = [Nsstring stringWithFormat:@"24.0"];          [prefs setobject:FontSize forKey:@"FontSize"];        neverOpendFonts2 = [Nsstring stringWithFormat:@"1"];        [prefs setobject:neverOpendFonts2 forKey:@"neverOpendFonts2"];        [prefs synchronize];        }        else {            lastIndexPath2 = [NSIndexPath indexPathForRow:0 inSection:1];            UItableVIEwCell *newCell3 = [mytableVIEw cellForRowAtIndexPath:lastIndexPath2];             newCell3.accessoryType = UItableVIEwCellAccessorycheckmark;             Nsstring *lastIndexPathString2 = [Nsstring stringWithFormat:@"0"];            [prefs setobject:lastIndexPathString2 forKey:@"lastIndexPath2"];            Nsstring *FontSize = [Nsstring stringWithFormat:@"16.0"];              [prefs setobject:FontSize forKey:@"FontSize"];            neverOpendFonts2 = [Nsstring stringWithFormat:@"1"];            [prefs setobject:neverOpendFonts2 forKey:@"neverOpendFonts2"];            [prefs synchronize];        }    }    else    {        NSInteger row2 = [[prefs objectForKey:@"lastIndexPath2"] intValue];        NSLog(@"FontSIZE ROW: %i",row2);       lastIndexPath2 = [NSIndexPath indexPathForRow:row2 inSection:1];        UItableVIEwCell *newCell2 = [mytableVIEw cellForRowAtIndexPath:lastIndexPath2];         newCell2.accessoryType = UItableVIEwCellAccessorycheckmark;     }    [mytableVIEw reloadData];}- (NSInteger)tableVIEw:(UItableVIEw *)tableVIEw numberOfRowsInSection:(NSInteger)section {    //Number of rows it should expect should be based on the section    NSDictionary *dictionary = [listofItems objectAtIndex:section];    NSArray *array = [dictionary objectForKey:@"FontOptions"];    return [array count];}- (NSInteger)numberOfSectionsIntableVIEw:(UItableVIEw *)tableVIEw {    return [listofItems count];}- (UItableVIEwCell *)tableVIEw:(UItableVIEw *)tableVIEw cellForRowAtIndexPath:(NSIndexPath *)indexPath {    static Nsstring *CellIDentifIEr = @"Cell";    UItableVIEwCell *cell = [tableVIEw dequeueReusableCellWithIDentifIEr:CellIDentifIEr];    if (cell == nil) {       // cell = [[[UItableVIEwCell alloc] initWithFrame:CGRectZero reuseIDentifIEr:CellIDentifIEr] autorelease];        cell = [[[UItableVIEwCell alloc] initWithStyle:UItableVIEwCellStyleDefault reuseIDentifIEr:CellIDentifIEr] autorelease];    }    // Set up the cell...    //First get the dictionary object    NSDictionary *dictionary = [listofItems objectAtIndex:indexPath.section];    NSArray *array = [dictionary objectForKey:@"FontOptions"];    Nsstring *cellValue = [array objectAtIndex:indexPath.row];    cell.textLabel.text = cellValue;    if (indexPath.section == 0)    {        if([lastIndexPath1 isEqual:indexPath])        {            cell.accessoryType = UItableVIEwCellAccessorycheckmark;        }        else         {            cell.accessoryType = UItableVIEwCellAccessoryNone;        }        switch (indexPath.row) {            case 0:            {             cell.textLabel.Font = [UIFont FontWithname:@"Baskerville" size:24];               }                break;            case 1:            {              cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:24];                }                break;            case 2:            {                cell.textLabel.Font = [UIFont FontWithname:@"Times New Roman" size:24];              }                break;            case 3:            {               cell.textLabel.Font = [UIFont FontWithname:@"Verdana" size:24];               }                break;        }    }    if (indexPath.section == 1) {        if([lastIndexPath2 isEqual:indexPath])        {            cell.accessoryType = UItableVIEwCellAccessorycheckmark;        }        else         {            cell.accessoryType = UItableVIEwCellAccessoryNone;        }        switch (indexPath.row) {            case 0:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:16];               }                break;            case 1:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:20];                }                break;            case 2:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:24];              }                break;            case 3:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:28];               }                break;            case 4:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:32];               }                break;            case 5:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:36];               }                break;            case 6:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:40];               }                break;            case 7:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:44];               }                break;            case 8:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:48];               }                break;            case 9:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:52];               }                break;            case 10:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:56];               }                break;            case 11:            {                cell.textLabel.Font = [UIFont FontWithname:@"Palatino" size:60];               }                break;        }        }        return cell;}

解决方法 lastIndexPath1是如何定义的,具有什么属性？你能尝试通过类使用self.lastIndexPath1吗？ 总结

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