iOS开发>>>UITableview实现更多数据显示方法
2013-10-16 20:09
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#import <UIKit/UIKit.h>
@interface iphone_tableMoreViewController : UIViewController
<UITableViewDelegate,UITableViewDataSource>{
IBOutlet UITableView *myTableView;
NSMutableArray *items;
}
@property (nonatomic,retain) UITableView *myTableView;
@property (nonatomic,retain) NSMutableArray *items;
@end
#import "iphone_tableMoreViewController.h"
@implementation iphone_tableMoreViewController
@synthesize items,myTableView;
- (void)viewDidLoad {
[super viewDidLoad];
items=[[NSMutableArray alloc] initWithCapacity:0];
for (int i=0; i<10; i++) {
[items addObject:[NSString stringWithFormat:@"cell %i",i]];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload {
items=nil;
self.myTableView=nil;
}
- (void)dealloc {
[self.myTableView release];
[items release];
[super dealloc];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
int count = [items count];
return count + 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *tag=@"tag";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:tag];
if (cell==nil) {
cell=[[[UITableViewCell alloc] initWithFrame:CGRectZero
reuseIdentifier:tag] autorelease];
}
if([indexPath row] == ([items count])) {
//创建loadMoreCell
cell.textLabel.text=@"More..";
}else {
cell.textLabel.text=[items objectAtIndex:[indexPath row]];
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == [items count]) {
UITableViewCell *loadMoreCell=[tableView cellForRowAtIndexPath:indexPath];
loadMoreCell.textLabel.text=@"loading more …";
[self performSelectorInBackground:@selector(loadMore) withObject:nil];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
return;
}
//其他cell的事件
}
-(void)loadMore
{
NSMutableArray *more;
more=[[NSMutableArray alloc] initWithCapacity:0];
for (int i=0; i<10; i++) {
[more addObject:[NSString stringWithFormat:@"cell ++%i",i]];
}
//加载你的数据
[self performSelectorOnMainThread:@selector(appendTableWith:) withObject:more waitUntilDone:NO];
[more release];
}
-(void) appendTableWith:(NSMutableArray *)data
{
for (int i=0;i<[data count];i++) {
[items addObject:[data objectAtIndex:i]];
}
NSMutableArray *insertIndexPaths = [NSMutableArray arrayWithCapacity:10];
for (int ind = 0; ind < [data count]; ind++) {
NSIndexPath *newPath = [NSIndexPath indexPathForRow:[items indexOfObject:[data objectAtIndex:ind]] inSection:0];
[insertIndexPaths addObject:newPath];
}
[self.myTableView insertRowsAtIndexPaths:insertIndexPaths withRowAnimation:UITableViewRowAnimationFade];
}
@end
@interface iphone_tableMoreViewController : UIViewController
<UITableViewDelegate,UITableViewDataSource>{
IBOutlet UITableView *myTableView;
NSMutableArray *items;
}
@property (nonatomic,retain) UITableView *myTableView;
@property (nonatomic,retain) NSMutableArray *items;
@end
#import "iphone_tableMoreViewController.h"
@implementation iphone_tableMoreViewController
@synthesize items,myTableView;
- (void)viewDidLoad {
[super viewDidLoad];
items=[[NSMutableArray alloc] initWithCapacity:0];
for (int i=0; i<10; i++) {
[items addObject:[NSString stringWithFormat:@"cell %i",i]];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload {
items=nil;
self.myTableView=nil;
}
- (void)dealloc {
[self.myTableView release];
[items release];
[super dealloc];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
int count = [items count];
return count + 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *tag=@"tag";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:tag];
if (cell==nil) {
cell=[[[UITableViewCell alloc] initWithFrame:CGRectZero
reuseIdentifier:tag] autorelease];
}
if([indexPath row] == ([items count])) {
//创建loadMoreCell
cell.textLabel.text=@"More..";
}else {
cell.textLabel.text=[items objectAtIndex:[indexPath row]];
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == [items count]) {
UITableViewCell *loadMoreCell=[tableView cellForRowAtIndexPath:indexPath];
loadMoreCell.textLabel.text=@"loading more …";
[self performSelectorInBackground:@selector(loadMore) withObject:nil];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
return;
}
//其他cell的事件
}
-(void)loadMore
{
NSMutableArray *more;
more=[[NSMutableArray alloc] initWithCapacity:0];
for (int i=0; i<10; i++) {
[more addObject:[NSString stringWithFormat:@"cell ++%i",i]];
}
//加载你的数据
[self performSelectorOnMainThread:@selector(appendTableWith:) withObject:more waitUntilDone:NO];
[more release];
}
-(void) appendTableWith:(NSMutableArray *)data
{
for (int i=0;i<[data count];i++) {
[items addObject:[data objectAtIndex:i]];
}
NSMutableArray *insertIndexPaths = [NSMutableArray arrayWithCapacity:10];
for (int ind = 0; ind < [data count]; ind++) {
NSIndexPath *newPath = [NSIndexPath indexPathForRow:[items indexOfObject:[data objectAtIndex:ind]] inSection:0];
[insertIndexPaths addObject:newPath];
}
[self.myTableView insertRowsAtIndexPaths:insertIndexPaths withRowAnimation:UITableViewRowAnimationFade];
}
@end
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