iTableView出现在iOS 7.1上，但不出现在iOS 8.2上
iTableView出现在iOS 7.1上，但不出现在iOS 8.2上,ios,objective-c,uitableview,Ios,Objective C,Uitableview,我使用Xcode 6.2，swift和我遇到问题的这个特殊类在Objective中。我使用的是storyboard，一个tabcontroller，其中一个选项卡调用historyViewController`它有一个表视图。在iOS7中，当我单击history选项卡按钮时，表视图将显示其数据 #import "historyListViewController.h" #import "QRdatabase.h" #import "qrdbinfo.h" #import "historyDeta
我使用Xcode 6.2，swift和我遇到问题的这个特殊类在Objective中。我使用的是storyboard，一个tabcontroller，其中一个选项卡调用#import "historyListViewController.h"
#import "QRdatabase.h"
#import "qrdbinfo.h"
#import "historyDetailViewController.h"
#import <UIKit/UIKit.h>
#import "SDWebImage/UIImageView+WebCache.h"
#import "UIImageView+WebCache.h"
@implementation historyListViewController
@synthesize details = _details;
@synthesize qrInfos = _qrInfos;
@synthesize segmentchange;
- (IBAction)valid_in_seg:(id)sender
{
if (segmentchange.selectedSegmentIndex == 0)
{ self.qrInfos = [QRdatabase database].qrdbInfos;
[self.tablelist reloadData];
}
else
{
self.qrInfos = [QRdatabase database].inqrdbInfos;
}
[self.tablelist reloadData];
}
- (void)viewDidLayoutSubviews
{
[super viewDidLayoutSubviews];
// Scroll table view to the last row
if (_shouldScrollToLastRow)
{
_shouldScrollToLastRow = NO;
[self.tablelist setContentOffset:CGPointMake(0, CGFLOAT_MAX)];
}
[self.tablelist reloadData];
}
- (void)viewDidLoad {
[super viewDidLoad];
[self.tablelist reloadData];
UIImage *myImage =[UIImage imageNamed:@"logo_white_38.png"];
UIImageView *myImageView = [[UIImageView alloc] initWithImage:myImage];
[myImageView setFrame:CGRectMake(0, 0, 38, 38)];
self.navigationItem.titleView = myImageView;
self.navigationController.navigationBar.backgroundColor = [UIColor redColor];
segmentchange.tintColor = [UIColor redColor];
_shouldScrollToLastRow = YES;
if (segmentchange.selectedSegmentIndex == 0)
{
self.qrInfos = [QRdatabase database].qrdbInfos;
[self.tablelist reloadData];
}
else
{
self.qrInfos = [QRdatabase database].inqrdbInfos;
[self.tablelist reloadData];
}
self.tablelist.delegate = self;
self.tablelist.dataSource = self;
[self.view addSubview:self.tablelist];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if (segmentchange.selectedSegmentIndex == 0)
{
self.qrInfos = [QRdatabase database].qrdbInfos;
[self.tablelist reloadData];
}
else
{
self.qrInfos = [QRdatabase database].inqrdbInfos;
[self.tablelist reloadData];
}
[self.tablelist reloadData];
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
[[NSURLCache sharedURLCache] removeAllCachedResponses];
}
/*- (void)viewDidUnload {
self.qrInfos = nil;
self.details = nil;
}*/
#pragma mark Table view methods
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 10;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{ if (segmentchange.selectedSegmentIndex == 0)
{
return 80;
}
else
return 120;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [_qrInfos count];
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
if (segmentchange.selectedSegmentIndex == 0)
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [self.tablelist dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];}
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
cell.textLabel.text = info.qr_code;
cell.detailTextLabel.text = [NSString stringWithFormat:@"Date: %@", info.date];
CGSize itemSize = CGSizeMake(30, 30);
UIGraphicsBeginImageContext(itemSize);
CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
[cell.imageView.image drawInRect:imageRect];
cell.imageView.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:info.img]
placeholderImage:[UIImage imageNamed:@"img_not_available.png"]];
return cell;
}
else
{
static NSString *CellIdentifier = @"Cell2";
UITableViewCell *cell = [self.tablelist dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
cell.textLabel.text = info.qr_code;
cell.detailTextLabel.text = [NSString stringWithFormat:@"Date: %@", info.date];
return cell;
}
// return cell;
}
- (void)downloadImageWithURL:(NSURL *)url completionBlock:(void (^)(BOOL succeeded, UIImage *image))completionBlock
{
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if ( !error )
{
UIImage *image = [[UIImage alloc] initWithData:data];
completionBlock(YES,image);
} else{
completionBlock(NO,nil);
}
}];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if(segmentchange.selectedSegmentIndex == 0)
{
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
UIStoryboard* sb = [UIStoryboard storyboardWithName:@"Main"
bundle:nil];
historyDetailViewController * vc = [sb instantiateViewControllerWithIdentifier:@"detail"];
vc.hidesBottomBarWhenPushed = YES;
vc.qrId = info.uniqueId;
[self.navigationController pushViewController:vc animated:YES];
}
else
{
UIAlertView *alerts = [[UIAlertView alloc] initWithTitle:@" Data Unavailable" message:@"No data available for invalid scans" delegate:self cancelButtonTitle:@"ok" otherButtonTitles:nil, nil, nil];
[alerts show];
}
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
[self.qrInfos removeObjectAtIndex:indexPath.row];
[self.tablelist deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES];
if(segmentchange.selectedSegmentIndex == 0)
{
// Delete the row from the data source
[[QRdatabase database] deleterow:info.uniqueId];
}
else
{
[[QRdatabase database] deleteinvalidrow:info.uniqueId];
}
[self.tablelist reloadData ];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
@end
#import "historyListViewController.h"
#import "QRdatabase.h"
#import "qrdbinfo.h"
#import "historyDetailViewController.h"
#import <UIKit/UIKit.h>
#import "SDWebImage/UIImageView+WebCache.h"
#import "UIImageView+WebCache.h"
@implementation historyListViewController
@synthesize details = _details;
@synthesize qrInfos = _qrInfos;
@synthesize segmentchange;
- (IBAction)valid_in_seg:(id)sender
{
if (segmentchange.selectedSegmentIndex == 0)
{ self.qrInfos = [QRdatabase database].qrdbInfos;
[self.tablelist reloadData];
}
else
{
self.qrInfos = [QRdatabase database].inqrdbInfos;
}
[self.tablelist reloadData];
}
- (void)viewDidLayoutSubviews
{
[super viewDidLayoutSubviews];
// Scroll table view to the last row
if (_shouldScrollToLastRow)
{
_shouldScrollToLastRow = NO;
[self.tablelist setContentOffset:CGPointMake(0, CGFLOAT_MAX)];
}
[self.tablelist reloadData];
}
- (void)viewDidLoad {
[super viewDidLoad];
[self.tablelist reloadData];
UIImage *myImage =[UIImage imageNamed:@"logo_white_38.png"];
UIImageView *myImageView = [[UIImageView alloc] initWithImage:myImage];
[myImageView setFrame:CGRectMake(0, 0, 38, 38)];
self.navigationItem.titleView = myImageView;
self.navigationController.navigationBar.backgroundColor = [UIColor redColor];
segmentchange.tintColor = [UIColor redColor];
_shouldScrollToLastRow = YES;
if (segmentchange.selectedSegmentIndex == 0)
{
self.qrInfos = [QRdatabase database].qrdbInfos;
[self.tablelist reloadData];
}
else
{
self.qrInfos = [QRdatabase database].inqrdbInfos;
[self.tablelist reloadData];
}
self.tablelist.delegate = self;
self.tablelist.dataSource = self;
[self.view addSubview:self.tablelist];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if (segmentchange.selectedSegmentIndex == 0)
{
self.qrInfos = [QRdatabase database].qrdbInfos;
[self.tablelist reloadData];
}
else
{
self.qrInfos = [QRdatabase database].inqrdbInfos;
[self.tablelist reloadData];
}
[self.tablelist reloadData];
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
[[NSURLCache sharedURLCache] removeAllCachedResponses];
}
/*- (void)viewDidUnload {
self.qrInfos = nil;
self.details = nil;
}*/
#pragma mark Table view methods
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 10;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{ if (segmentchange.selectedSegmentIndex == 0)
{
return 80;
}
else
return 120;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [_qrInfos count];
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
if (segmentchange.selectedSegmentIndex == 0)
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [self.tablelist dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];}
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
cell.textLabel.text = info.qr_code;
cell.detailTextLabel.text = [NSString stringWithFormat:@"Date: %@", info.date];
CGSize itemSize = CGSizeMake(30, 30);
UIGraphicsBeginImageContext(itemSize);
CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
[cell.imageView.image drawInRect:imageRect];
cell.imageView.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:info.img]
placeholderImage:[UIImage imageNamed:@"img_not_available.png"]];
return cell;
}
else
{
static NSString *CellIdentifier = @"Cell2";
UITableViewCell *cell = [self.tablelist dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
cell.textLabel.text = info.qr_code;
cell.detailTextLabel.text = [NSString stringWithFormat:@"Date: %@", info.date];
return cell;
}
// return cell;
}
- (void)downloadImageWithURL:(NSURL *)url completionBlock:(void (^)(BOOL succeeded, UIImage *image))completionBlock
{
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if ( !error )
{
UIImage *image = [[UIImage alloc] initWithData:data];
completionBlock(YES,image);
} else{
completionBlock(NO,nil);
}
}];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if(segmentchange.selectedSegmentIndex == 0)
{
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
UIStoryboard* sb = [UIStoryboard storyboardWithName:@"Main"
bundle:nil];
historyDetailViewController * vc = [sb instantiateViewControllerWithIdentifier:@"detail"];
vc.hidesBottomBarWhenPushed = YES;
vc.qrId = info.uniqueId;
[self.navigationController pushViewController:vc animated:YES];
}
else
{
UIAlertView *alerts = [[UIAlertView alloc] initWithTitle:@" Data Unavailable" message:@"No data available for invalid scans" delegate:self cancelButtonTitle:@"ok" otherButtonTitles:nil, nil, nil];
[alerts show];
}
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
qrdbinfo *info = [_qrInfos objectAtIndex:indexPath.row];
[self.qrInfos removeObjectAtIndex:indexPath.row];
[self.tablelist deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES];
if(segmentchange.selectedSegmentIndex == 0)
{
// Delete the row from the data source
[[QRdatabase database] deleterow:info.uniqueId];
}
else
{
[[QRdatabase database] deleteinvalidrow:info.uniqueId];
}
[self.tablelist reloadData ];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
@end
#导入“historyListViewController.h”
#导入“QRdatabase.h”
#导入“qrdbinfo.h”
#导入“historyDetailViewController.h”
#进口
#导入“SDWebImage/UIImageView+WebCache.h”
#导入“UIImageView+WebCache.h”
@historyListViewController的实现
@综合细节=_细节；
@综合qrInfos=_qrInfos；
@综合变化；
-（iAction）seg中的有效\u:（id）发送方
{
if（segmentchange.selectedSegmentIndex==0）
{self.qrInfos=[QRdatabase database].qrdbInfos；
[self.tablelist重载数据]；
}
其他的
{
self.qrInfos=[QRdatabase database].inqrdbInfos；
}
[self.tablelist重载数据]；
}
-（无效）ViewDidLayoutSubView
{
[超级视图布局子视图]；
//将表格视图滚动到最后一行
如果（_shoulldtolastrow）
{
_shoulldScrollTolastrow=否；
[self.tablelist setContentOffset:CGPointMake（0，CGFLOAT_MAX）]；
}
[self.tablelist重载数据]；
}
-（无效）viewDidLoad{
[超级视图下载]；
[self.tablelist重载数据]；
UIImage*myImage=[UIImage ImageName:@“logo_white_38.png”]；
UIImageView*myImageView=[[UIImageView alloc]initWithImage:myImage]；
[myImageView设置帧：CGRectMake（0,0,38,38）]；
self.navigationItem.titleView=myImageView；
self.navigationController.navigationBar.backgroundColor=[UIColor redColor]；
segmentchange.tintColor=[UIColor redColor]；
_shoulldScrollTolastrow=是；
if（segmentchange.selectedSegmentIndex==0）
{
self.qrInfos=[QRdatabase database].qrdbInfos；
[self.tablelist重载数据]；
}
其他的
{
self.qrInfos=[QRdatabase database].inqrdbInfos；
[self.tablelist重载数据]；
}
self.tablelist.delegate=self；
self.tablelist.dataSource=self；
[self.view addSubview:self.tablelist]；
}
-（无效）视图显示：（BOOL）动画{
[超级视图显示：动画]；
if（segmentchange.selectedSegmentIndex==0）
{
self.qrInfos=[QRdatabase database].qrdbInfos；
[self.tablelist重载数据]；
}
其他的
{
self.qrInfos=[QRdatabase database].inqrdbInfos；
[self.tablelist重载数据]；
}
[self.tablelist重载数据]；
}
-（无效）未收到记忆警告{
//如果视图没有superview，则释放该视图。
[超级记忆警告]；
[[NSURLCache sharedURLCache]移除所有缓存响应]；
}
/*-（无效）视图卸载{
self.qrInfos=nil；
self.details=nil；
}*/
#pragma标记表视图方法
-（CGFloat）表格视图：（UITableView*）表格视图头部高度部分：（NSInteger）部分
{
返回10；
}
-（CGFloat）tableView:（UITableView*）表视图行高度索引路径：（NSIndexPath*）索引路径
{如果（segmentchange.selectedSegmentIndex==0）
{
返回80；
}
其他的
返回120；
}
-（NSInteger）表格视图中的节数：（UITableView*）表格视图{
返回1；
}
//自定义表视图中的行数
-（NSInteger）表视图：（UITableView*）表视图行数节：（NSInteger）节{
返回[_qrinfoscount]；
}
//自定义表格视图单元格的外观。
-（UITableViewCell*）tableView:（UITableView*）tableView cellForRowAtIndexPath:（NSIndexPath*）indexPath{
if（segmentchange.selectedSegmentIndex==0）
{
静态NSString*CellIdentifier=@“Cell”；
UITableViewCell*单元格=[self.tablelist dequeueReusableCellWithIdentifier:CellIdentifier]；
如果（单元格==nil）{
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle重用标识符：CellIdentifier]；}
qrdbinfo*info=[\u qrInfos objectAtIndex:indexath.row]；
cell.textlab.text=info.qr\u码；
cell.detailTextLabel.text=[NSString stringWithFormat:@“日期：%@”，info.Date]；
cgsizeitemsize=CGSizeMake（30,30）；
UIGraphicsBeginImageContext（itemSize）；
CGRect imageRect=CGRectMake（0.0,0.0，itemSize.width，itemSize.height）；
[cell.imageView.image drawInRect:imageRect]；
cell.imageView.image=UIGraphicsGetImageFromCurrentImageContext（）；
UIGraphicsSendImageContext（）；
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:info.img]
占位符图像：[UIImage ImageName:@“img_not_available.png”]；
返回单元；
}
其他的
{
静态NSString*CellIdentifier=@“Cell2”；
UITableViewCell*单元格=[self.tablelist dequeueReusableCellWithIdentifier:CellIdentifier]；
如果（单元格==nil）{
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle重用标识符：CellIdentifier]；
}
qrdbinfo*info=[\u qrInfos objectAtIndex:indexath.row]；
cell.textlab.text=info.qr\u码；
cell.detailTextLabel.text=[NSString stringWithFormat:@“日期：%@”，info.Date]；
返回单元；
}
//返回单元；
}
-（void）下载带有url的图像：（NSURL*）url完成块：（void（^）（BOOL成功，UIImage*image））完成块
{
NSMutableURLRequest*请求=[NSMutableUrlRequestRequestWithURL:url]；
[NSURLConnection sendAsynchronousRequest:请求
队列：[NSOperationQueue mainQueue]
completionHandler:^（NSURLResponse*响应，NSData*数据，NSError*错误）{
如果（！错误）
{
UIImage*image=[[UIImage alloc]initWithData:data]；
completionBlock（是，图像）；
}否则{
完井区块（无，无）；
}
}];
}
-（void）tableView:（UITableView*）tableView未选择Rowatindexpath