编写App的开场Activity
在android的app和游戏的应用中，都会有个开场场景，老外管这个叫splash。
现在就编写个简单的SplashActivity

import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.widget.ImageView;public class SplashActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.splash);ImageView splashImg = (ImageView) findViewById(R.id.splash_image);splashImg.postDelayed(new Runnable() {//这里利用了View的postDelayedpublic void run() {Intent intent = new Intent();intent.setClass(SplashActivity.this, MainActivity.class);startActivity(intent);finish();}}, 1000);}}

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <ImageView        android:id="@+id/splash_background"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:scaleType="fitXY"        android:src="@drawable/splash_floor" />    <ImageView        android:id="@+id/splash_image"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:scaleType="fitXY"        android:src="@drawable/splash_logo" />    <ImageView        android:id="@+id/splash_foot"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_marginBottom="10.0dip"        android:src="@drawable/splash_logo_foot" /></RelativeLayout>