कृपया यह लेख पढ़ें:
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt)
{
// Grab the last child placed in the ScrollView, we need it to determinate the bottom position.
View view = (View) getChildAt(getChildCount()-1);
// Calculate the scrolldiff
int diff = (view.getBottom()-(getHeight()+getScrollY()));
// if diff is zero, then the bottom has been reached
if(diff == 0)
{
// notify that we have reached the bottom
Log.d(ScrollTest.LOG_TAG, "MyScrollView: Bottom has been reached");
}
super.onScrollChanged(l, t, oldl, oldt);
}
आप आप एक कस्टम विजेट बनाने में जोड़ सकते हैं चाहते हैं
यहाँ एक कोड नमूना है।
उदाहरण:
package se.marteinn.ui;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ScrollView;
/**
* Triggers a event when scrolling reaches bottom.
*
* Created by martinsandstrom on 2010-05-12.
* Updated by martinsandstrom on 2014-07-22.
*
* Usage:
*
* scrollView.setOnBottomReachedListener(
* new InteractiveScrollView.OnBottomReachedListener() {
* @Override
* public void onBottomReached() {
* // do something
* }
* }
* );
*
*
* Include in layout:
*
* <se.marteinn.ui.InteractiveScrollView
* android:layout_width="match_parent"
* android:layout_height="match_parent" />
*
*/
public class InteractiveScrollView extends ScrollView {
OnBottomReachedListener mListener;
public InteractiveScrollView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
}
public InteractiveScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public InteractiveScrollView(Context context) {
super(context);
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
View view = (View) getChildAt(getChildCount()-1);
int diff = (view.getBottom()-(getHeight()+getScrollY()));
if (diff == 0 && mListener != null) {
mListener.onBottomReached();
}
super.onScrollChanged(l, t, oldl, oldt);
}
// Getters & Setters
public OnBottomReachedListener getOnBottomReachedListener() {
return mListener;
}
public void setOnBottomReachedListener(
OnBottomReachedListener onBottomReachedListener) {
mListener = onBottomReachedListener;
}
/**
* Event listener.
*/
public interface OnBottomReachedListener{
public void onBottomReached();
}
}
स्रोत
2015-05-31 15:13:36
यह उत्तर क्यों स्वीकार किया जाता है, सवाल एक स्क्रॉल व्यू के बारे में है, सूची दृश्य नहीं, स्क्रॉल दृश्य में एडाप्टर नहीं है। – Ixx