new Handler().postDelayed(new Runnable() {// 为了减少代码使用匿名Handler创建一个延时的调用public void run() {Intent i = new Intent(SplashActivity.this, MainActivity.class );startActivity(i);finish();overridePendingTransition(R.anim. in_1, R.anim.out_1);}}, 2000 );//延缓2秒

public class SplashActivity extends Activity {private Handler handler;private final int NOTIFY_CLOSE_ACTIVITY = 1;private int SPLASH_DISPLAY_LENGHT = 2000; // 延迟两秒
@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_splash);initialize();handler.removeMessages(NOTIFY_CLOSE_ACTIVITY);handler.sendEmptyMessageDelayed(NOTIFY_CLOSE_ACTIVITY, SPLASH_DISPLAY_LENGHT);}private void initialize() {handler = new Handler() {@Overridepublic void handleMessage(Message msg) {// TODO Auto-generated method stubsuper.handleMessage(msg);switch (msg.what ) {case NOTIFY_CLOSE_ACTIVITY :goMain();break;default:break;}}};}private void goMain(){Intent intent = new Intent(SplashActivity.this, MainActivity.class );this.startActivity(intent);this.finish();};
}

public class SplashActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);View view = View. inflate(this, R.layout. activity_splash, null);setContentView(view);//动画效果参数直接定义Animation animation = new AlphaAnimation(0.1f, 1.0f);animation.setDuration(5000);view.setAnimation(animation);animation.setAnimationListener( new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {}@Overridepublic void onAnimationRepeat(Animation animation) {}@Overridepublic void onAnimationEnd(Animation animation) {goMain();}});}private void goMain(){Intent intent = new Intent(SplashActivity.this, MainActivity.class );this.startActivity(intent);this.finish();};
}

        new CountDownTimer(3000 ,1000){@Overridepublic void onTick(long millisUntilFinished) {// TODO Auto-generated method stubSystem.out.println("-------onFinish---------");}@Overridepublic void onFinish() {// TODO Auto-generated method stubSystem.out.println("-------onFinish---------");}}.start();