Android简单实现启动画面的方法

package com.demo.app;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;public class SplashActivity extends Activity {  private final int SPLASH_DISPLAY_LENGHT = 6000; // 延迟六秒  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.splash);    new Handler().postDelayed(new Runnable() {      public void run() {        Intent mainIntent = new Intent(SplashActivity.this,            HelloWorldActivity.class);        SplashActivity.this.startActivity(mainIntent);        SplashActivity.this.finish();      }    }, SPLASH_DISPLAY_LENGHT);  }}

// 立即执行Runnable对象public final boolean post(Runnable r);// 在指定的时间（uptimeMillis）执行Runnable对象public final boolean postAtTime(Runnable r, long uptimeMillis);// 在指定的时间间隔（delayMillis）执行Runnable对象public final boolean postDelayed(Runnable r, long delayMillis);

SplashActivity.this.startActivity(mainIntent);SplashActivity.this.finish();