http://stackoverflow.com/questions/3738965/android-detect-when-scrollview-has-finished-scrolling-and-bouncing-back
ScrollView 用的是scroller做的滑动, 但是 scroller 被scrollView隐藏了 你无法调用 你可以直接自己写个Scrollview 代码完全copy 自带的scrollView 然后把scroller暴露出来!
可以派生的。如果(mScroller.computeScrollOffset()返回false则表示滚动结束了。
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;
public class ObservableScrollView extends ScrollView {
private OnScrollChangeListener onScrollChangeListener = null;
private OnScrollStopListener onScrollStopListener = null;
private OnBorderListener onBorderListener = null;
private boolean isBorderMonitor = false;
private boolean isStart = false;
public ObservableScrollView(Context context) {
this(context, null);
// TODO Auto-generated constructor stub
}
public ObservableScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
initObservableScrollView();
// this(context, attrs, com.android.internal.R.attr.scrollViewStyle);
// TODO Auto-generated constructor stub
}
public ObservableScrollView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
initObservableScrollView();
// TODO Auto-generated constructor stub
}
private void initObservableScrollView() {
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
//requestDisallowInterceptTouchEvent(disallowIntercept);
//disallowIntercept=true不让父元素拦截元素;disallowIntercept=false,没有拦截
getParent().requestDisallowInterceptTouchEvent(true);
return super.dispatchTouchEvent(ev);
}
public void setOnScrollStopListener(OnScrollStopListener onScrollStopListener) {
this.onScrollStopListener = onScrollStopListener;
}
public void setOnScrollChangeListener(
OnScrollChangeListener onScrollChangeListener) {
this.onScrollChangeListener = onScrollChangeListener;
}
public void setOnBorderListener(OnBorderListener onBorderListener) {
this.isBorderMonitor = true;
this.onBorderListener = onBorderListener;
}
private void onScrollFinished(){
if(null != onScrollStopListener){
onScrollStopListener.onScrollStop(this);
}
}
private void onScrollStart(int l, int t) {
if (!isStart) {
isStart = true;
new ScrollListener(l,t).start();
}
}
class ScrollListener extends Thread {
int oldX, oldY;
public ScrollListener(int oldx, int oldy) {
this.oldX = oldx;
this.oldY = oldy;
}
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
while (isStart) {
int newX = getScrollX();
int newY = getScrollY();
if (newX == oldX && newY == oldY) {
onScrollFinished();
isStart = false;
} else {
oldX = newX;
oldY = newY;
}
}
}
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
onScrollStart(l,t);
super.onScrollChanged(l, t, oldl, oldt);
if (onScrollChangeListener != null) {
onScrollChangeListener.onScrollChanged(this, l, t, oldl, oldt);
}
if (isBorderMonitor) {
if (0 == t && null != onBorderListener) {
onBorderListener.onBottom();
} else if ((getChildAt(0).getMeasuredHeight() <= t + getHeight())
&& null != onBorderListener) {
onBorderListener.onTop();
}
}
}
public interface OnScrollChangeListener {
public void onScrollChanged(ObservableScrollView scrollView, int x, int y,
int oldx, int oldy);
}
public interface OnScrollStopListener {
public void onScrollStop(ObservableScrollView scrollView);
}
/**
* OnBorderListener, Called when scroll to top or bottom
*
* @author Myth 2013-5-22
*/
public static interface OnBorderListener {
/**
* Called when scroll to bottom
*/
public void onBottom();
/**
* Called when scroll to top
*/
public void onTop();
}
public void setBorderMonitor(boolean isBorderMonitor) {
this.isBorderMonitor = isBorderMonitor;
}
}
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;
public class ObservableScrollView extends ScrollView {
private OnScrollChangeListener onScrollChangeListener = null;
private OnScrollStopListener onScrollStopListener = null;
private OnBorderListener onBorderListener = null;
private boolean isBorderMonitor = false;
private boolean isStart = false;
public ObservableScrollView(Context context) {
this(context, null);
// TODO Auto-generated constructor stub
}
public ObservableScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
initObservableScrollView();
// this(context, attrs, com.android.internal.R.attr.scrollViewStyle);
// TODO Auto-generated constructor stub
}
public ObservableScrollView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
initObservableScrollView();
// TODO Auto-generated constructor stub
}
private void initObservableScrollView() {
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
//requestDisallowInterceptTouchEvent(disallowIntercept);
//disallowIntercept=true不让父元素拦截元素;disallowIntercept=false,没有拦截
getParent().requestDisallowInterceptTouchEvent(true);
return super.dispatchTouchEvent(ev);
}
public void setOnScrollStopListener(OnScrollStopListener onScrollStopListener) {
this.onScrollStopListener = onScrollStopListener;
}
public void setOnScrollChangeListener(
OnScrollChangeListener onScrollChangeListener) {
this.onScrollChangeListener = onScrollChangeListener;
}
public void setOnBorderListener(OnBorderListener onBorderListener) {
this.isBorderMonitor = true;
this.onBorderListener = onBorderListener;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if(ev.getAction() == MotionEvent.ACTION_UP){
// 手指松开.
if (null != onScrollStopListener) {
onScrollStopListener.onScrollStop(this);
}
}
return super.onTouchEvent(ev);
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
if (onScrollChangeListener != null) {
onScrollChangeListener.onScrollChanged(this, l, t, oldl, oldt);
}
if (isBorderMonitor) {
if (0 == t && null != onBorderListener) {
onBorderListener.onBottom();
} else if ((getChildAt(0).getMeasuredHeight() <= t + getHeight())
&& null != onBorderListener) {
onBorderListener.onTop();
}
}
}
public interface OnScrollChangeListener {
public void onScrollChanged(ObservableScrollView scrollView, int x, int y,
int oldx, int oldy);
}
public interface OnScrollStopListener {
public void onScrollStop(ObservableScrollView scrollView);
}
/**
* OnBorderListener, Called when scroll to top or bottom
*
* @author Myth 2013-5-22
*/
public static interface OnBorderListener {
/**
* Called when scroll to bottom
*/
public void onBottom();
/**
* Called when scroll to top
*/
public void onTop();
}
public void setBorderMonitor(boolean isBorderMonitor) {
this.isBorderMonitor = isBorderMonitor;
}
}
public class CustomScrollView extends ScrollView {
private OnOverScrolledListener mOnOverScrolledListener = null;
/**
* @param context
*/
public CustomScrollView(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
/**
* @param context
* @param attrs
*/
public CustomScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}
/**
* @param context
* @param attrs
* @param defStyle
*/
public CustomScrollView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}
/* (non-Javadoc)
* @see android.widget.ScrollView#arrowScroll(int)
*/
@Override
public boolean arrowScroll(int arg0) {
// TODO Auto-generated method stub
return super.arrowScroll(arg0);
}
/* (non-Javadoc)
* @see android.widget.ScrollView#computeScroll()
*/
@Override
public void computeScroll() {
// TODO Auto-generated method stub
super.computeScroll();
}
/**
* @return the mOnOverScrolledListener
*/
public OnOverScrolledListener getOnOverScrolledListener() {
return mOnOverScrolledListener;
}
/**
* @param mOnOverScrolledListener the mOnOverScrolledListener to set
*/
public void setOnOverScrolledListener(OnOverScrolledListener mOnOverScrolledListener) {
this.mOnOverScrolledListener = mOnOverScrolledListener;
}
public interface OnOverScrolledListener{
public abstract void onOverScrolled(View view, int scrollX, int scrollY, boolean clampedX, boolean clampedY);
}
/* (non-Javadoc)
* @see android.widget.ScrollView#onOverScrolled(int, int, boolean, boolean)
*/
@Override
protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) {
// TODO Auto-generated method stub
super.onOverScrolled(scrollX, scrollY, clampedX, clampedY);
if(mOnOverScrolledListener != null) {
mOnOverScrolledListener.onOverScrolled(this, scrollX, scrollY, clampedX, clampedY);
}
Log.i("CustomScrollView", "===DBG:onOverScrolled");
}
}
时间： 2024-07-31 14:34:46