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
[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();
            }
        }
    }
}

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
[html]
<?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:/

补充：移动开发 , Android ,