ios – 如何删除UITableView节头删除后创建的空间？

概述我有一个UITableView.这是动态表.当您触摸“添加文件”按钮时,我正在创建一个新的部分和行.如果再次触摸,我只会创建一行.当你触摸“添加号码”按钮时,我正在创建一个新的部分和行.如果再次触摸,我只会创建一行.还行吧.但是如果你删除第一部分,第二部分不会集中到顶部.我正在添加一些截图和我的所有代码. 请帮我. 这是我的第一个屏幕 我添加了一个“文件”和两个“数字” 我删除了“文件”但第二部分 我有一个UItableVIEw.这是动态表.当您触摸“添加文件”按钮时,我正在创建一个新的部分和行.如果再次触摸,我只会创建一行.当你触摸“添加号码”按钮时,我只会创建一行.还行吧.但是如果你删除第一部分,第二部分不会集中到顶部.我正在添加一些截图和我的所有代码.

请帮我.

这是我的第一个屏幕

我添加了一个“文件”和两个“数字”

我删除了“文件”但第二部分没有上传.

代码：

#import "VIEwController.h"@interface VIEwController ()@end@implementation VIEwController@synthesize tblListe,btnCancel,btnEdit;- (voID)vIEwDIDLoad {    [super vIEwDIDLoad];    self.automaticallyAdjustsScrollVIEwInsets = NO;    fileArr = [[NSMutableArray alloc] init];    NumberArr = [[NSMutableArray alloc] init];}-(NSInteger)tableVIEw:(UItableVIEw *)tableVIEw numberOfRowsInSection:(NSInteger)section{    int a=0;    if (section==0) {        if(fileArr.count>0)            a=fileArr.count;    } else {        if(NumberArr.count>0)            a=NumberArr.count;    }    return a;}-(NSInteger)numberOfSectionsIntableVIEw:(UItableVIEw *)tableVIEw{    return 2;}-(CGfloat)tableVIEw:(UItableVIEw *)tableVIEw heightForheaderInSection:(NSInteger)section{    return 37.0;}-(UItableVIEwCell *)tableVIEw:(UItableVIEw *)tableVIEw cellForRowAtIndexPath:(NSIndexPath *)indexPath{    UItableVIEwCell *hucre = [[UItableVIEwCell alloc] init];    if(indexPath.section==0){        hucre.textLabel.text=[fileArr objectAtIndex:indexPath.row];    }else{        hucre.textLabel.text=[NumberArr objectAtIndex:indexPath.row];    }    hucre.accessoryType = UItableVIEwCellAccessorydisclosureIndicator;    return hucre;}-(UIVIEw *)tableVIEw:(UItableVIEw *)tableVIEw vIEwForheaderInSection:(NSInteger)section{    UIVIEw *AnaVIEw=[[UIVIEw alloc]initWithFrame:CGRectMake(0,self.vIEw.frame.size.wIDth,0)];    UIVIEw *AsilVIEw=[[UIVIEw alloc]initWithFrame:CGRectMake(5,35)];    CGRect labelFrame = CGRectMake(5,self.vIEw.frame.size.wIDth/3,35);    UILabel *myLabel = [[UILabel alloc] initWithFrame:labelFrame];    int say=0;    if(section==0){        myLabel.text = @"files";        say=fileArr.count;    }else{        myLabel.text = @"Numbers";        say=NumberArr.count;    }    myLabel.Font = [UIFont boldSystemFontOfSize:14.0f];    myLabel.textAlignment =  NSTextAlignmentCenter;    myLabel.textcolor = [UIcolor whitecolor];    myLabel.backgroundcolor = [self colorWithHexString:@"ce1b27"];    UIVIEw *lineVIEw=[[UIVIEw alloc]initWithFrame:CGRectMake(5,AsilVIEw.frame.size.height,self.vIEw.frame.size.wIDth-5,2)];    lineVIEw.backgroundcolor = [self colorWithHexString:@"ce1b27"];    [AnaVIEw addSubvIEw:AsilVIEw];    [AnaVIEw addSubvIEw:myLabel];    [AnaVIEw addSubvIEw:lineVIEw];    if (say>0) {        return AnaVIEw;    }else{        return nil;    }}-(Nsstring *)tableVIEw:(UItableVIEw *)tableVIEw TitleForheaderInSection:(NSInteger)section{    Nsstring *x;    if (section==0) {        if(fileArr.count>0)            x=@"files";        else            x=nil;    } else {        if (NumberArr.count>0)            x=@"Numbers";        else            x=nil;    }    return x;}-(Nsstring *)tableVIEw:(UItableVIEw *)tableVIEw TitleForDeleteConfirmationbuttonForRowAtIndexPath:(NSIndexPath *)indexPath{    return @"Delete";}-(voID)tableVIEw:(UItableVIEw *)tableVIEw commitEditingStyle:(UItableVIEwCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{    if(editingStyle == UItableVIEwCellEditingStyleDelete){        if (indexPath.section==0) {            [fileArr removeObjectAtIndex:indexPath.row];        }else{            [NumberArr removeObjectAtIndex:indexPath.row];        }    }    [self SatirIslem:0];    //NSLog(@"%@",fileArr);    [tblListe reloadData];}-(BOol)tableVIEw:(UItableVIEw *)tableVIEw canEditRowAtIndexPath:(NSIndexPath *)indexPath{    return YES;}- (IBAction)DuZenle:(ID)sender {    [tblListe setEditing:YES animated:YES];    btnCancel.enabled = YES;}- (IBAction)Iptal:(ID)sender {    [tblListe setEditing:NO animated:YES];    btnCancel.enabled = NO;}- (IBAction)DosyaEkle:(ID)sender {    [fileArr addobject:@"This is a file"];    [self SatirIslem:1];}- (IBAction)NumaraEkle:(ID)sender {    [NumberArr addobject:@"This is a Number"];    [self SatirIslem:1];}-(voID)SatirIslem:(NSInteger) islem{    CGfloat x=0,y=0,w=0,h=0;    if (islem==1) { // satır Ekle        x=tblListe.frame.origin.x;        y=tblListe.frame.origin.y;        w=tblListe.frame.size.wIDth;        h=tblListe.frame.size.height;        if(fileArr.count==1 || NumberArr.count==1){            h+=35+44; // 35 header için 44 satır için        }else{            h+=44;        }    }    if (islem==0) {        x=tblListe.frame.origin.x;        y=tblListe.frame.origin.y;        w=tblListe.frame.size.wIDth;        h=tblListe.contentSize.height;        if(fileArr.count==0 && NumberArr.count==0){            h=1;        }else if(fileArr.count==0 || NumberArr.count==0) {            h-=44+35;// 35 header için 44 satır için        }else{            h-=44;        }    }    tblListe.frame=CGRectMake(x,y,w,h);    [tblListe reloadData];}-(UIcolor*)colorWithHexString:(Nsstring*)hex{    Nsstring *cString = [[hex stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];    if ([cString length] < 6) return [UIcolor graycolor];    if ([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];        if ([cString length] != 6) return  [UIcolor graycolor];        NSRange range;    range.location = 0;    range.length = 2;    Nsstring *rString = [cString substringWithRange:range];        range.location = 2;    Nsstring *gString = [cString substringWithRange:range];        range.location = 4;    Nsstring *bString = [cString substringWithRange:range];        unsigned int r,g,b;    [[NSScanner scannerWithString:rString] scanHexInt:&r];    [[NSScanner scannerWithString:gString] scanHexInt:&g];    [[NSScanner scannerWithString:bString] scanHexInt:&b];       return     [UIcolor colorWithRed:((float) r / 255.0f)green:((float) g / 255.0f)                         blue:((float) b / 255.0f)Alpha:1.0f];}@end

解决方法 您可以通过返回高度的不同值来解决此问题.

-(CGfloat)tableVIEw:(UItableVIEw *)tableVIEw heightForheaderInSection:(NSInteger)section{  if (section==0) {    if(fileArr.count==0)      return 0;  } else {    if(NumberArr.count==0)      return 0;  }  return 37.0;}

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