package com.cnn.scrollviewdemo01;

import android.R.integer;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

import android.view.Menu;

import android.view.MenuItem;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.View.OnTouchListener;

import android.widget.Button;

import android.widget.ScrollView;

import android.widget.TextView;

@SuppressLint("ClickableViewAccessibility") public class MainActivity extends Activity {

	private TextView textView;

	private ScrollView scrollView;

	private Button btnUp,btnDown;

	int scrollY=0;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        textView= (TextView) findViewById(R.id.textView1);

        textView.setText(getResources().getString(R.string.china_news));

        scrollView=(ScrollView) findViewById(R.id.scrollView1);

        scrollView.setOnTouchListener(new OnTouchListener() {

			@Override

			public boolean onTouch(View v, MotionEvent event) {

				// TODO 自动生成的方法存根

				switch (event.getAction()) {

					case MotionEvent.ACTION_UP://手指抬起

						break;

					case MotionEvent.ACTION_DOWN://手指落下

						break;

					case MotionEvent.ACTION_MOVE://手指滑动

						if (scrollView.getScaleY()<=0) {//顶部

							Log.i("tag", "没有滑动");

						}

						//textView总高度<=一屏幕的高度+滚动条的滚动距离

						if (scrollView.getChildAt(0).getMeasuredHeight()<=

								scrollView.getHeight()+scrollView.getScrollY()) {

							Log.i("tag", "没有到底部");

							textView.append("123111111111111111111111111111111111111111111111111111111");//(getResources().getString(R.string.china_news));

						}

						break;

				}

				return false;

			}

		});

        btnUp=(Button) findViewById(R.id.button2);

        btnDown=(Button) findViewById(R.id.button1);

        btnDown.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// TODO 自动生成的方法存根

				//scrollY=scrollY+10;

				//scrollView.setScrollY(scrollY);

				scrollView.scrollBy(0, 20);

			}

		});

        btnUp.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// TODO 自动生成的方法存根

				//scrollY=scrollY-10;

				//scrollView.setScrollY(scrollY);

				scrollView.scrollBy(0, -20);

			}

		});

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

        // Handle action bar item clicks here. The action bar will

        // automatically handle clicks on the Home/Up button, so long

        // as you specify a parent activity in AndroidManifest.xml.

        int id = item.getItemId();

        if (id == R.id.action_settings) {

            return true;

        }

        return super.onOptionsItemSelected(item);

    }

}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <Button

        android:id="@+id/button2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Up" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Donw" />

    <ScrollView

        android:id="@+id/scrollView1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" >

        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:orientation="vertical" >

            <TextView

                android:id="@+id/textView1"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:text="TextView" />

        </LinearLayout>

    </ScrollView>

</LinearLayout>