Visualforce:
<apex:page standardController=”Photo__c” extensions=”SlideShow” sidebar=”false”>
<apex:form >
<center>
<apex:image url=”{!tmp}”/>
<br/>
<br/>
<br/>
<apex:commandButton action=”{!prev}” value=”Previous”/>
<apex:commandButton action=”{!nxt}” value=”Next”/>
</center>
</apex:form>
</apex:page>
Apex Controller:
Public Class SlideShow
{
public List<Photo__c> photo {get; set;}
public String imageTag {get; set;}
public String photoUrl {get; set;}
public Integer strt=0,ed=1,len=0,i=0,indx=0;
public String tmp {get; set;}
public SlideShow(ApexPages.StandardController controller)
{
String sql = ‘SELECT image__c FROM Photo__c’;
photo = Database.query(sql);
imageTag = photo.get(indx).image__c;
strt = imageTag.indexOf(‘src=’,0) + 5;
ed = imageTag.lastIndexOf(‘alt=’) – 2;
tmp = imageTag.substring(strt,ed);
}
public void prev()
{
if(indx != 0)
{
indx = indx – 1;
String sql = ‘SELECT image__c FROM Photo__c’;
photo = Database.query(sql);
imageTag = photo.get(indx).image__c;
strt = imageTag.indexOf(‘src=’,0) + 5;
ed = imageTag.lastIndexOf(‘alt=’) – 2;
tmp = imageTag.substring(strt,ed);
}
}
public void nxt()
{
len = [SELECT COUNT() FROM Photo__c];
if(indx != (len-1))
{
indx = indx + 1;
String sql = ‘SELECT image__c FROM Photo__c’;
photo = Database.query(sql);
imageTag = photo.get(indx).image__c;
len =imageTag.length();
strt = imageTag.indexOf(‘src=’,0) + 5;
ed = imageTag.lastIndexOf(‘alt=’) – 2;
tmp = imageTag.substring(strt,ed);
}
}
}
Cheers!!!
Cheers!!!