android应用的欢迎启动界面效果

 欢迎启动效果：
1、
public class WelComeActivity extends Activity{
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.welcome);
  start();
 }
 public void start(){
  new Thread(){
   @Override
   public void run() {
    try {
     Thread.sleep(2500);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }
    Intent intent = new Intent(WelComeActivity.this, LoginActivity.class);
    startActivity(intent);
    finish();
   }
  }.start();
 }
}
2、布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android=" http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@drawable/welcome" >
 
  <TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingTop="250px"
    android:paddingLeft="70px"
    style="@style/content"
    android:text="房达客正在登录中....."
      />
</LinearLayout>