问题
I have the following code to fetch the data from URL, store it in arrays, and display it inside the table. I had some issue related to fetching and that is solved on SO Click here Now the issue is data is displayed in the table in a manner which is not the ideal one.
When I run the below code, I get this output. That shaded grey portion is my main concern. When I try to insert any element say button in that grey shaded area through design view, it gets overlapped by table. If I change
aTableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen]applicationFrame] style:UITableViewStyleGrouped];
with
aTableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen]applicationFrame] style:UITableViewStylePlained];
I get the table output without the grey shadow but it's way too simple.
Note that I'm creating table programmatically.
fetchdataViewController.h
#import <UIKit/UIKit.h>
@interface fetchdataViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>{
IBOutlet UIWebView *webView;
NSMutableArray *arr1;
NSMutableArray *atarr;
NSMutableArray *arr2;
NSMutableArray *a;
NSMutableArray *b;
NSMutableArray *c;
NSMutableArray *d;
UITableView *aTableView;
}
-(IBAction)btnClicked:(id)sender;
-(IBAction)btnClicked1:(id)sender;
-(void)gainer;
-(void)looser;
@property(nonatomic,retain)NSMutableArray *arr1;
@property(nonatomic,retain)NSMutableArray *arr2;
@property(nonatomic,retain)NSMutableArray *atarr;
@property(nonatomic,retain)NSMutableArray *a;
@property(nonatomic,retain)NSMutableArray *b;
@property(nonatomic,retain)NSMutableArray *c;
@property(nonatomic,retain)NSMutableArray *d;
@property(nonatomic,retain)UIWebView *webView;
@property(nonatomic,retain)UITableView *aTableView;
@end
fetchdataViewController.m
#import "fetchdataViewController.h"
@implementation fetchdataViewController
NSMutableArray *atarr;
NSMutableArray *arr1;
NSMutableArray *arr2;
NSMutableArray *a;
NSMutableArray *b;
NSMutableArray *c;
NSMutableArray *d;
NSMutableString *mainstr;
NSMutableString *str;
@synthesize webView;
@synthesize arr1;
@synthesize arr2;
@synthesize atarr;
@synthesize a;
@synthesize b;
@synthesize c;
@synthesize d;
@synthesize aTableView;
int i,j;
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [a count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier=@"Cell";
static NSInteger StateTag = 1;
static NSInteger CapitalTag = 2;
static NSInteger StateTag1 = 3;
static NSInteger StateTag2 = 4;
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil){
cell=[[[UITableViewCell alloc]initWithFrame:CGRectZero reuseIdentifier:CellIdentifier]autorelease];
CGRect frame;
frame.origin.x = 10;
frame.origin.y = 5;
frame.size.height = 35;
frame.size.width = 170;
UILabel *capitalLabel = [[UILabel alloc] initWithFrame:frame];
capitalLabel.tag = CapitalTag;
[cell.contentView addSubview:capitalLabel];
frame.origin.x += 125;
UILabel *stateLabel = [[UILabel alloc] initWithFrame:frame];
stateLabel.tag = StateTag;
[cell.contentView addSubview:stateLabel];
frame.origin.x += 100;
UILabel *stateLabel1 = [[UILabel alloc] initWithFrame:frame];
stateLabel1.tag = StateTag1;
[cell.contentView addSubview:stateLabel1];
frame.origin.x += 100;
UILabel *stateLabel2 = [[UILabel alloc] initWithFrame:frame];
stateLabel2.tag = StateTag2;
[cell.contentView addSubview:stateLabel2];
}
UILabel *capitalLabel = (UILabel *) [cell.contentView viewWithTag:CapitalTag];
UILabel *stateLabel = (UILabel *) [cell.contentView viewWithTag:StateTag];
UILabel *stateLabel1 = (UILabel *) [cell.contentView viewWithTag:StateTag1];
UILabel *stateLabel2 = (UILabel *) [cell.contentView viewWithTag:StateTag2];
capitalLabel.text=[a objectAtIndex:indexPath.row];
stateLabel.text = [b objectAtIndex:indexPath.row];
stateLabel1.text = [c objectAtIndex:indexPath.row];
stateLabel2.text = [d objectAtIndex:indexPath.row];
return cell;
}
-(IBAction)btnClicked:(id)sender{
[self gainer];
}
-(IBAction)btnClicked1:(id)sender {
[self looser];
}
-(void)gainer{
arr1=[[NSMutableArray alloc]init];
arr2=[[NSMutableArray alloc]init];
a=[[NSMutableArray alloc]init];
b=[[NSMutableArray alloc]init];
c=[[NSMutableArray alloc]init];
d=[[NSMutableArray alloc]init];
NSURL *url=[NSURL URLWithString:@"http://ipad.idealake.com/default.aspx?id=G"];
NSURLRequest *req=[NSURLRequest requestWithURL:url];
[webView loadRequest:req];
//storing page data in string
mainstr=[[NSMutableString alloc] initWithContentsOfURL:url];
atarr=[mainstr componentsSeparatedByString:@"@"];
NSString *str2;
NSString *str3;
for(int i=0; i<[atarr count]-1; i++)
{
// NSLog(@"i=:%i",i);
NSMutableString *str = [atarr objectAtIndex:i];
if (str!= nil)
arr1=[str componentsSeparatedByString:@";"];
for (int k=0;k<[arr1 count];k++)
{
str2 = [arr1 objectAtIndex:k];
[arr2 addObject:str2];
}
}
else
{
//NSLog (@"Nill");
}
}
for(int l=0;l<[arr2 count]/4;l++){
str3=[arr2 objectAtIndex:4*l];
[a addObject:str3];
str3=[arr2 objectAtIndex:(4*l)+1];
[b addObject:str3];
str3=[arr2 objectAtIndex:(4*l)+2];
[c addObject:str3];
str3=[arr2 objectAtIndex:(4*l)+3];
[d addObject:str3];
}
}
-(void)looser{
arr1=[[NSMutableArray alloc]init];
arr2=[[NSMutableArray alloc]init];
a=[[NSMutableArray alloc]init];
b=[[NSMutableArray alloc]init];
c=[[NSMutableArray alloc]init];
d=[[NSMutableArray alloc]init];
NSURL *url=[NSURL URLWithString:@"http://ipad.idealake.com/default.aspx?id=L"];
NSURLRequest *req=[NSURLRequest requestWithURL:url];
[webView loadRequest:req];
mainstr=[[NSMutableString alloc] initWithContentsOfURL:url];
atarr=[mainstr componentsSeparatedByString:@"@"];
NSString *str2;
NSString *str3;
for(int i=0; i<[atarr count]-1; i++)
{
NSMutableString *str = [atarr objectAtIndex:i];
if (str!= nil)
{
arr1=[str componentsSeparatedByString:@";"];
for (int k=0;k<[arr1 count];k++)
{
str2 = [arr1 objectAtIndex:k];
[arr2 addObject:str2];
}
}
else
{
//NSLog (@"Nill");
}
}
for(int l=0;l<[arr2 count]/4;l++){
str3=[arr2 objectAtIndex:4*l];
[a addObject:str3];
str3=[arr2 objectAtIndex:(4*l)+1];
[b addObject:str3];
str3=[arr2 objectAtIndex:(4*l)+2];
[c addObject:str3];
str3=[arr2 objectAtIndex:(4*l)+3];
[d addObject:str3];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
arr1=[[NSMutableArray alloc]init];
arr2=[[NSMutableArray alloc]init];
a=[[NSMutableArray alloc]init];
b=[[NSMutableArray alloc]init];
c=[[NSMutableArray alloc]init];
d=[[NSMutableArray alloc]init];
[self gainer];
[super viewDidLoad];
aTableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen]applicationFrame] style:UITableViewStyleGrouped];
aTableView.dataSource = self;
aTableView.delegate = self;
aTableView.frame = CGRectMake(0, 10, 720, 500);
[self.view addSubview:aTableView];
[super viewDidLoad];
}
- (void)viewDidUnload
{
[super viewDidUnload];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
@end
THANKS IN ADVANCE
回答1:
If your problem is to remove the lightgrey area from your groupedtableview, then you can remove the shaded grey area by adding this to your code:
if ([myTable respondsToSelector:@selector(backgroundView)]) {
myTable.backgroundView = nil;
}
It's an issue that only iPad has with groupedTableViewStyle.
回答2:
At first of all why you are writing this line two times?? [super viewDidLoad]; in tableview
Secondly i think you are displaying your fetch data into an webview which is into the table view.i do not understanding that if you are making your table pro grammatically then how could you display webview using IBOutlet into the tablevie?!!
I think you can try this[webView setOpaque:NO]; May be it will solve the problem..
来源：https://stackoverflow.com/questions/8471794/displaying-uitableview-in-proper-format