ListView 滑动监听的几种状态

package com.example.listviewscrolllistener;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ListView;

public class MainActivity extends Activity {

private ListView mlv;
private String[] str=new String[]{"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mlv=(ListView)findViewById(R.id.mListView);
mlvmethod();
}

private void mlvmethod() {
mlv.addHeaderView(getheaderView());
mlv.addFooterView(getFooterView());
mlv.setAdapter(new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_expandable_list_item_1, str));
mlv.setOnScrollListener(new OnScrollListener() {

//滑动状态的监听
//第一参数listView视图，第二个参数滑动状态
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
switch (scrollState) {
//空閒狀態
case OnScrollListener.SCROLL_STATE_IDLE:
Log.i("lege", "空閒狀態");
break;
//滑動狀態
case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
Log.i("lege", "滑動狀態");
break;
//慣性
case OnScrollListener.SCROLL_STATE_FLING:
Log.i("lege", "慣性");
break;
default:
break;
}

}

//滚动状态
//第一参数listView视图，第二个参数首个条目，第三个参数可件可见条目数，第四个参数总条目数
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
Log.i("lege", "首个条目"+firstVisibleItem+"可见条目"+visibleItemCount+"总条目数"+totalItemCount);
}
});
}

private View getFooterView() {
TextView mtv=new TextView(this);
mtv.setText("====尾部====");
mtv.setGravity(Gravity.CENTER);
mtv.setPadding(20, 20, 20, 20);
mtv.setTextColor(Color.RED);
mtv.setBackgroundColor(Color.BLUE);
return mtv;
}

private View getheaderView() {
TextView mtv=new TextView(this);
mtv.setText("====头部====");
mtv.setGravity(Gravity.CENTER);
mtv.setPadding(20, 20, 20, 20);
mtv.setTextColor(Color.RED);
mtv.setBackgroundColor(Color.BLUE);
return mtv;
}

}