Android textView点击滚动(跑马灯)效果

布局文件:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_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="com.example.textview.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:text="数值" />

    <TextView
        android:id="@+id/tv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:ellipsize="end"
        android:marqueeRepeatLimit="marquee_forever"
        android:scrollHorizontally="true"
        android:singleLine="true"
        android:text="莫听穿林打叶声,何妨吟啸且徐行,竹杖芒鞋轻胜马,谁怕?一蓑烟雨任平生."
        android:textSize="18sp" />

    <TextView
        android:id="@+id/tv1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="200dp"
        android:ellipsize="end"
        android:marqueeRepeatLimit="marquee_forever"
        android:scrollHorizontally="true"
        android:singleLine="true"
        android:text="莫听穿林打叶声,何妨吟啸且徐行,竹杖芒鞋轻胜马,谁怕?一蓑烟雨任平生."
        android:textSize="18sp" />

</LinearLayout>

代码:

package com.example.textview;

import android.app.Activity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;

public class MainActivity extends Activity {
    private TextView tv, tv1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initView();
    }

    private void initView() {
        tv = (TextView) findViewById(R.id.tv);
        tv.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                tv.setEllipsize(TextUtils.TruncateAt.MARQUEE);
                tv.setFocusable(true);
                tv.setFocusableInTouchMode(true);
                tv.requestFocus();

            }
        });

        tv1 = (TextView) findViewById(R.id.tv1);
        tv1.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                tv1.setEllipsize(TextUtils.TruncateAt.MARQUEE);
                tv1.setFocusable(true);
                tv1.setFocusableInTouchMode(true);
                tv1.requestFocus();

            }
        });

    }
}