android 启动页面的设置

package com.example.usinglistview;
/**
 * @projectname UsingListView  
 * @author Jo Jo_feng
 * @foundtime 2016-1-5 下午9:33:28
 * @theme 启动界面的设置
 */
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.os.Handler;
import android.view.WindowManager;
import android.widget.TextView;

public class StartActivity extends Activity {
	@SuppressWarnings("deprecation")
	@Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        getWindow().setFormat(PixelFormat.RGBA_8888);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_DITHER);

        setContentView(R.layout.activity_start);

        //Display the current version number
        PackageManager pm = getPackageManager();
        try {
            PackageInfo pi = pm.getPackageInfo("com.example.usinglistview", 0);//设置程序版本
            TextView versionNumber = (TextView) findViewById(R.id.textView1);
            versionNumber.setText("Version 版本 " + pi.versionName);//在启动页面显示文本
        } catch (NameNotFoundException e) {
            e.printStackTrace();
        }

        new Handler().postDelayed(new Runnable() {
            public void run() {
                /* Create an Intent that will start the Main WordPress Activity. */
                Intent mainIntent = new Intent(StartActivity.this, MainActivity.class);
                StartActivity.this.startActivity(mainIntent);
                StartActivity.this.finish();
            }
        }, 2900); //2900 for release

    }
	  
	
}

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:background="@drawable/ic_launcher"
    tools:context=".StartActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="69dp"
        android:text="TextView" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.usinglistview"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.usinglistview.MainActivity"
            android:label="@string/app_name" >
          
        </activity>
        <activity
            android:name="com.example.usinglistview.StartActivity"
            android:label="@string/title_activity_start" >
             <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>