Android启动页面定时跳转的三种方法

 final Intent it = new Intent(this, Activity1.class); //你要转向的Activity       Timer timer = new Timer();      TimerTask task = new TimerTask() {        @Override        public void run() {         startActivity(it); //执行         }       };     timer.schedule(task, 1000 * 10); //10秒后 

public class WelcomeActivity extends Activity {  @Override protected void onCreate(Bundle savedInstanceState) { <span style="white-space:pre"> </span>// TODO Auto-generated method stub <span style="white-space:pre"> </span>super.onCreate(savedInstanceState); <span style="white-space:pre"> </span>setContentView(R.layout.welcome); <span style="white-space:pre"> </span>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();    }   }; } 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:layout_width="match_parent"   android:layout_height="match_parent" >    <ImageView     android:id="@+id/iv_splash_mainview"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:background="@drawable/splash_bg"     android:src="@drawable/splash_sheep_n" /> </LinearLayout> 

public class <span style="font-family: Arial, Helvetica, sans-serif;">splash</span><span style="font-family: Arial, Helvetica, sans-serif;">Activity extends Activity {</span>      private ImageView iv_mainview;   private AnimationSet as;    @Override   protected void onCreate(Bundle savedInstanceState) {     // TODO Auto-generated method stub     super.onCreate(savedInstanceState);          //去掉标题     //requestWindowFeature(Window.FEATURE_NO_TITLE);     initView();// 初始化界面      startAnimation();//开始播放动画       initEvent();//初始化事件   }       private void initEvent() {     //1、监听动画播放完的事件，只是一处用到事件就用匿名类对象，多处声明成员变量用      as.setAnimationListener(new AnimationListener() {        @Override       public void onAnimationStart(Animation animation) {                }        @Override       public void onAnimationRepeat(Animation animation) {        }        //监听动画播放完       @Override       public void onAnimationEnd(Animation animation) {                  //          Intent main = new Intent(<span style="font-family: Arial, Helvetica, sans-serif;">splash</span><span style="font-family: Arial, Helvetica, sans-serif;">Activity </span><span style="font-family: Arial, Helvetica, sans-serif;">.this,MainActivity.class);</span>         startActivity(main);//主界面                //关闭自己         finish();       }     });   }    /**    * 开始播放动画：旋转，缩放，渐变    */   private void startAnimation() {     // false 代表动画集中每种动画都采用各自的动画插入器（数字函数）     as = new AnimationSet(false);      //旋转动画，锚点     RotateAnimation ra = new RotateAnimation(         0, 360,         Animation.RELATIVE_TO_SELF, 0.5f,         Animation.RELATIVE_TO_SELF,0.5f);//设置锚点为图片的中心点     // 设置动画播放时间     ra.setDuration(2000);     ra.setFillAfter(true);//动画播放完之后，停留在当前状态       // 添加到动画集     as.addAnimation(ra);      // 渐变动画     AlphaAnimation aa = new AlphaAnimation(0, 1);//由完全透明到不透明      //      aa.setDuration(2000);     aa.setFillAfter(true);//      //      as.addAnimation(aa);      // 缩放动画     ScaleAnimation sa = new ScaleAnimation(         0, 1, 0, 1,         Animation.RELATIVE_TO_SELF, 0.5f,          Animation.RELATIVE_TO_SELF, 0.5f);     //      sa.setDuration(2000);     sa.setFillAfter(true);//      //      as.addAnimation(sa);      // 播放动画     iv_mainview.startAnimation(as);      // 动画播完进入下一个界面 ：向导界面或者主界面     //1、监听动画播放完的事件         }    private void initView() {     // 设置主界面     setContentView(R.layout.onemain);      // 获取背景图片     iv_mainview = (ImageView) findViewById(R.id.iv_splash_mainview);    }             }