Android监听ScrollView滑动到顶端和底部例子

package zm.scroolview;

import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ScrollView;

public class MainActivity extends Activity{
    private ScrollView sl;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        sl = (ScrollView) findViewById(R.id.sl);
        sl.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                switch (motionEvent.getAction()) {
                    case MotionEvent.ACTION_DOWN:

                        break;
                    case MotionEvent.ACTION_MOVE:
                        int scrollY=view.getScrollY();
                        int height=view.getHeight();
                        int scrollViewMeasuredHeight=sl.getChildAt(0).getMeasuredHeight();
                        if(scrollY==0){
                            System.out.println("滑动到了顶端 getScrollY()="+scrollY);
                        }
                        if((scrollY+height)==scrollViewMeasuredHeight){
                            System.out.println("滑动到了底部 scrollY="+scrollY);
                            System.out.println("滑动到了底部 height="+height);
                            System.out.println("滑动到了底部 scrollViewMeasuredHeight="+scrollViewMeasuredHeight);
                        }
                        break;

                    default:
                        break;
                }
                return false;
            }
        });
    }
}