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:    zhb931706659@126.com
*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！