滚动条（如果超出屏幕，自动计算滚动)

<LinearLayout     xmlns:android=" 由于文章包含被禁用的url，无法保存和发布，此处为关键配置信息"    xmlns:tools="由于文章包含被禁用的url，无法保存和发布，此处为关键配置信息"    android:id="@+id/main"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:orientation="vertical">    <Button         android:id="@+id/btn"        android:text="Button"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        ></Button><ScrollView     android:id="@+id/ScrollView"    android:layout_weight="1"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:scrollbars="vertical"><LinearLayout     android:id="@+id/LinearLayout"    android:layout_width="fill_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" ></LinearLayout></ScrollView></LinearLayout>

activity_main2.xml:

 

package com.example.scrollview;import android.os.Bundle;import android.os.Handler;import android.text.util.Linkify;import android.view.View;import android.view.View.OnClickListener;import android.app.Activity;import android.view.Menu;import android.widget.Button;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.LinearLayout.LayoutParams;import android.widget.ScrollView;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {private LinearLayout mLinearLayout = null;private ScrollView sView = null;private final Handler mHandler = new Handler();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main2);        //创建一个线性布局        this.mLinearLayout = (LinearLayout) super.findViewById(R.id.LinearLayout);        this.sView = (ScrollView) super.findViewById(R.id.ScrollView);        Button btn = (Button) super.findViewById(R.id.btn);        btn.setOnClickListener(new mClickListener());//添加单击事件            }    private Runnable mScrollToButton = new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stubint off = MainActivity.this.mLinearLayout.getMeasuredHeight()-MainActivity.this.sView.getHeight();//getMeasuredHeight()方法获得线性布局的大小//getHeight()方法获得View的大小if(off > 0){MainActivity.this.sView.scrollTo(0, off);//改变滚动条的位置//Toast.makeText(getApplicationContext(), "测试",Toast.LENGTH_LONG ).show();}}};    private class mClickListener implements OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stubImageView iView = new ImageView(MainActivity.this);TextView tView1 = new TextView(MainActivity.this);TextView tView2 = new TextView(MainActivity.this);iView.setImageDrawable(getResources().getDrawable(R.drawable.icon_zhengzhixiong));//过滤网站tView1.setAutoLinkMask(Linkify.WEB_URLS);//添加连接tView1.setText("欢迎来访我的CSDN");tView2.setText("个人简介：要成为IT顶层的男人\n" +"处世之道：且听风吟，生如夏花。\n");LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,//此处笔者也不知道为什么，可能是新版本不支持宽度为FILL_PARENTLinearLayout.LayoutParams.WRAP_CONTENT);MainActivity.this.mLinearLayout.addView(iView,params1);MainActivity.this.mLinearLayout.addView(tView1,params2);MainActivity.this.mLinearLayout.addView(tView2,params2);MainActivity.this.mHandler.post(mScrollToButton);//传递一个消息进行滚动}        };    @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;    }    }

效果：