这个主要是垂直方向的，如果需要左右的，修改下y为x即可。
import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.TranslateAnimation;
import android.widget.ScrollView;
public class MyScrollView extends ScrollView {
private View inner;
private float y;
private Rect normal = new Rect();
private float facotr = 4f;// 滑动阻塞系数
public MyScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onFinishInflate() {
if (getChildCount() > 0) {
inner = getChildAt(0);
}
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (inner == null) {
return super.onTouchEvent(ev);
} else {
commOnTouchEvent(ev);
}
return super.onTouchEvent(ev);
}
private void commOnTouchEvent(MotionEvent ev) {
int action = ev.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
y = ev.getY();
break;
case MotionEvent.ACTION_UP:
if (isNeedAnimation()) {
animation();
}
break;
case MotionEvent.ACTION_MOVE:
final float preY = y;
float nowY = ev.getY();
int deltaY = (int) (preY - nowY);
scrollBy(0, deltaY);// 滚动
y = nowY;
// 当滚动到最上或者最下时就不会再滚动，这时移动布局
if (isNeedMove()) {
if (normal.isEmpty()) {
// 保存正常的布局位置
normal.set(inner.getLeft(), inner.getTop(),
inner.getRight(), inner.getBottom());
}
// 移动布局
inner.layout(inner.getLeft(), inner.getTop()
- (int) (deltaY / facotr), inner.getRight(),
inner.getBottom() - (int) (deltaY / facotr));
}
break;
default:
break;
}
}
// 开启动画移动
public void animation() {
// 开启移动动画,Top position of this view relative to its parent
TranslateAnimation ta = new TranslateAnimation(0, 0, inner.getTop(),
normal.top);
ta.setDuration(400);
inner.startAnimation(ta);
// 设置回到正常的布局位置
inner.layout(normal.left, normal.top, normal.right, normal.bottom);
normal.setEmpty();
}
// 是否需要开启动画
public boolean isNeedAnimation() {
return !normal.isEmpty();
}
// 是否需要移动布局
public boolean isNeedMove() {
int offset = inner.getMeasuredHeight() - getHeight();
int scrollY = getScrollY();
if (scrollY == 0 || scrollY == offset) {
return true;
}
return false;
}
}