Here is an example code for you. this list scrolls infinite and using thread, it scrolls automatically. (pauses for while and coninues ...)
When you touch the list, list scrolling pauses and when you release it continues to automatic scroll.
If you touch under 100 miliseconds then it will considered item on click.
You can also scroll down or up, it will eventually continue to auto scrolling.
Come to think of it, it has turn into web like list. shame. :(
///////////////////////////////////////////////////////////////////////
List Item XML layout : item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="20dp"
android:orientation="vertical" >
<TextView
android:background="#00ff00"
android:layout_width="fill_parent"
android:layout_height="150dp"
android:id="@+id/name"
android:textColor="#000000"
android:textSize="26sp"
android:gravity="center"
android:textStyle="bold"/>
</LinearLayout>
///////////////////////////////////////////////////////////////////////
activity layout : activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="25dp"
android:gravity="center"
tools:context=".MainActivity" >
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="450dp"
android:background="#bbbbbb"
android:divider="#000000"/>
</RelativeLayout>
///////////////////////////////////////////////////////////////////////
activiy code (includes adapter and runnable thread) : MainActivity.java
public class MainActivity extends Activity {
ListView list;
long startTime;
long endTime;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = (ListView) findViewById(R.id.list);
List<String> mList = new ArrayList<String>();
String str;
for(int i=0;i<10;i++){
str = new String("Data --- "+i);
mList.add(str);
}
LAdapter adapter = new LAdapter(this,0,mList);
list.setAdapter(adapter);
final YourRunnable runy = new YourRunnable();
list.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN ){
startTime= (new Date()).getTime();
runy.onPause();//pausing thread actually pauses scrolling
}
if(event.getAction() == MotionEvent.ACTION_UP){
endTime= (new Date()).getTime();
if((endTime - startTime)<=100){//100 mill second limit for click
//Log.i("ITEM CLICK() ", "item : ");
}
runy.onResume(); //resume scrolling
}
return false;
}
});
new Thread(runy).start();
}
class YourRunnable implements Runnable {
private Object mPauseLock;
private boolean mPaused;
private boolean mFinished;
public YourRunnable() {
mPauseLock = new Object();
mPaused = false;
mFinished = false;
}
public void run() {
while (!mFinished) {
//for loop is not infinite but enough as Integer.MAX_VALUE
for (int index = 0; index < list.getAdapter().getCount(); index++) {
list.smoothScrollToPositionFromTop(list.getLastVisiblePosition() + 1, 0, 10000);
try {
// it helps scrolling to stay smooth as possible (by experiment)
Thread.sleep(10000);
synchronized (mPauseLock) {
while (mPaused) {
try {
mPauseLock.wait();//putting thread in wait list of mPauseLock object
} catch (InterruptedException e) {
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
/**
* Call this method to pause thread.
*/
public void onPause() {
synchronized (mPauseLock) {
mPaused = true;
}
}
/**
* Call this method to resume thread.
*/
public void onResume() {
synchronized (mPauseLock) {
mPaused = false;
mPauseLock.notifyAll();//notify all object that are waiting on the wait list of mPauseLock object
}
}
}
private class LAdapter extends ArrayAdapter{
List<String> mlist;
Context mContext;
LayoutInflater inflater;
public final int HALF_MAX_VALUE = Integer.MAX_VALUE/2;
public final int MIDDLE;
public LAdapter(Context ctx,int resId, List<String> objects){
super(ctx, resId, objects);
mContext = ctx;
mlist = objects;
inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
MIDDLE = HALF_MAX_VALUE - HALF_MAX_VALUE % mlist.size();
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return Integer.MAX_VALUE;
}
@Override
public String getItem(int position) {
// TODO Auto-generated method stub
int relativePos = position % mlist.size();
Log.i("RELATIVE : "," POS:"+relativePos);
return mlist.get(relativePos);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Log.i("POSITION TAG", "POSITION : "+position);
// if(position>(getCount()-1)){
// return null;
// }
ViewHolder holder = null;
if (convertView == null)
{
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.item, parent, false);
holder.name = (TextView) convertView.findViewById(R.id.name);
convertView.setTag(holder);
}
else
{
holder = (ViewHolder) convertView.getTag();
}
String model = getItem(position);
holder.name.setText(model);
convertView.setOnClickListener(new ListenerT(model) {
@Override
public void onClick(View v) {
Log.i("CLICK", "ITEM---"+name );
}
});
return convertView;
}
}
//use your own listener to pass parameter
private class ListenerT implements OnClickListener{
String name;
public ListenerT(String nm){
name = nm;
}
@Override
public void onClick(View v) {
}
}
private class ViewHolder{
TextView name;
}
}
