[英]ScrollView with paging in TableView Cell
我必須創建一個tableview,其中一個單元格具有一個滾動視圖,其中啟用了分頁和分頁控制。 我已經嘗試過了。
我在IB中創建了一個TableView Cell,里面有兩個東西:1.ScrollView 2.Page控件和在scrollview的每個頁面上運行時放置的一些標簽,我在普通視圖中測試了這個scrollview和分頁控件,它按預期工作。
我在ScrollViewCell.h中有以下代碼
#import <UIKit/UIKit.h>
@interface ScrollViewCell : UITableViewCell<UIScrollViewDelegate>
{
UIPageControl* pageControl;
UIScrollView* scrollView;
BOOL pageControlBeingUsed;
}
@property (nonatomic, retain) IBOutlet UIScrollView* scrollView;
@property (nonatomic, retain) IBOutlet UIPageControl* pageControl;
- (IBAction)changePage;
@end
並在ScrollViewCell.m中跟隨代碼
#import "ScrollViewCell.h"
@implementation ScrollViewCell
@synthesize scrollView;
@synthesize pageControl;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString*)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
NSArray *colors = [NSArray arrayWithObjects:[UIColor redColor], [UIColor greenColor], [UIColor blueColor], nil];
for (int i = 0; i < colors.count; i++) {
CGRect frame;
frame.origin.x = self.scrollView.frame.size.width * i;
frame.origin.y = 0;
frame.size = self.scrollView.frame.size;
UIView *subview = [[UIView alloc] initWithFrame:frame];
subview.backgroundColor = [UIColor grayColor];
[self.scrollView addSubview:subview];
// add buttons
CGRect Frame= CGRectMake(frame.origin.x,frame.origin.y,200,50);
//set your x and y position whatever u want.
UIButton *Button = [UIButton buttonWithType:UIButtonTypeCustom];
Button.frame = Frame;
UIImage *Img = [UIImage imageNamed:@"second.png"];
[Button setBackgroundImage:Img forState:UIControlStateNormal];
[scrollView addSubview: Button];
// add text
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(frame.origin.x,frame.origin.y+60,200,50)];
label.textAlignment = UITextAlignmentCenter;
label.text = @"Here you write your text";
label.textColor = [UIColor blackColor];
[scrollView addSubview:label ];
[subview release];
}
self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * colors.count, self.scrollView.frame.size.height);
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
- (void)scrollViewDidScroll:(UIScrollView *)sender {
if (!pageControlBeingUsed) {
// Switch the indicator when more than 50% of the previous/next page isvisible
CGFloat pageWidth = self.scrollView.frame.size.width;
int page = floor((self.scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
self.pageControl.currentPage = page;
}
}
- (IBAction)changePage {
// update the scroll view to the appropriate page
CGRect frame;
frame.origin.x = self.scrollView.frame.size.width * self.pageControl.currentPage;
frame.origin.y = 0;
frame.size = self.scrollView.frame.size;
[self.scrollView scrollRectToVisible:frame animated:YES];
pageControlBeingUsed = YES;
}
@end
我在表視圖中加載此單元格如下
static NSString *CellIdentifier = @"ScrollViewCell";
ScrollViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[ScrollViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
return cell;
當我運行這個應用程序時,它顯示一個具有所需高度但沒有任何內容的空表。 我的方法是否正確? 如果是的話什么都沒有?
謝謝Vishal
您正在嘗試在UITableViewCell
類中添加自定義您的UIScrollView
,我不確定它是否可行。
而是在你的UITableView
類cellForRowAtIndexPath
嘗試這樣的,
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString * CellIdentifier = @"GroupButtonCell";
CustomCell * cell = (CustomCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
NSArray * customcellArray = [[NSBundle mainBundle]loadNibNamed:@"CustomCell" owner:self options:nil];
for(id customcellObject in customcellArray){
if([customcellObject isKindOfClass: [UITableViewCell class]]){
cell = (CustomCell *)customcellObject;
break;
}
}
}
// Customize your UIScrollView here..
[cell.scrollView setDelegate:self];
[cell.scrollView setPagingEnabled:YES];
NSArray *colors = [NSArray arrayWithObjects:[UIColor redColor], [UIColor greenColor],[UIColor blueColor], nil];
cell.scrollView.contentSize = CGSizeMake(cell.scrollView.frame.size.width * colors.count,cell.scrollView.frame.size.height);
for (int i = 0; i < colors.count; i++) {
CGRect frame;
frame.origin.x = cell.scrollView.frame.size.width * i;
frame.origin.y = 0;
frame.size = cell.scrollView.frame.size;
UIView *subview = [[UIView alloc] initWithFrame:frame];
subview.backgroundColor = [colors objectAtIndex:i];
[cell.scrollView addSubview:subview];
}
// Configure the cell...
return cell;
}
在ScrollViewCell.m中嘗試這個內部的init方法。
[self.contentView addSubview:scrollView];
您應該在單元格上添加scrollview。 檢查M不確定。 我有時間嘗試項目。
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