Android 开机欢迎界面

public class WelcomeActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
new Handler().postDelayed(r, 1000);// 1秒后关闭，并跳转到主页面
}
Runnable r = new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(WelcomeActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
};
}