android欢迎界面的编程实现[手相评分-软件实例]

首先，我们可以先看一下“手相评分”这款软件的启动画面。如下：

其实，做欢迎界面的原理非常简单，就是在onCreate函数中启动一个线程，线程体在睡眠几秒钟之后，跳转
到MainActivity即可。具体实现代码如下：
WelcomeActivity.java

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.Window;

import android.view.WindowManager;

/*

 *@author: ZhengHaibo  

 *web:     http://blog.csdn.net/nuptboyzhb

 *mail:    [email protected]

 *2013-3-25  Nanjing,njupt,China

 */

public class WelcomeActivity extends Activity {

	private static final int GOTO_MAIN_ACTIVITY = 0;



	@Override

	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		// 设置无标题

		requestWindowFeature(Window.FEATURE_NO_TITLE);

		// 设置全屏

		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

				WindowManager.LayoutParams.FLAG_FULLSCREEN);

		setContentView(R.layout.activity_welcome);

		MyTimer timer = new MyTimer();

		timer.start();//启动线程

	}



	Handler mHandler = new Handler() {

		public void handleMessage(Message msg) {



			switch (msg.what) {

			case GOTO_MAIN_ACTIVITY:

				Intent intent = new Intent();

				intent.setClass(WelcomeActivity.this, SystemMain.class);

				startActivity(intent);

				finish();

				break;

			default:

				break;

			}

		};

	};



	public class MyTimer extends Thread {

		public MyTimer() {

			// TODO Auto-generated constructor stub

		}

		@Override

		public void run() {

			// TODO Auto-generated method stub

			try {

				Thread.sleep(3000);// 线程暂停时间，单位毫秒

				mHandler.sendEmptyMessage(GOTO_MAIN_ACTIVITY);

			} catch (InterruptedException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			}

		}

	}

}

布局代码activity_welcome.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

	android:layout_width="fill_parent"

	android:layout_height="fill_parent"

	android:orientation="horizontal"

	android:background="@drawable/welcome"

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

</LinearLayout>

对了，广告一下， 手相评分即是本人开发，多谢大家支持！以后会写该软件图像处理方面的实现方法，敬请期待！