2s打开式 使用到了反射效果很棒

package com.duguang.baseanimation.ui.splash.fade;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import android.content.Intent;import android.os.Handler;import com.duguang.baseanimation.R;import com.duguang.baseanimation.ui.base.BaseActivity;public class FadeSplashScreenActivity extends BaseActivity {   Class<?> activityClass;   Class[] paramTypes = { Integer.TYPE, Integer.TYPE };   Method overrideAnimation = null;   @Override   public void setView() {      setContentView(R.layout.activity_splash_fade_main);         }   @Override   public void initView() {      try {         activityClass = Class.forName("android.app.Activity");         overrideAnimation = activityClass.getDeclaredMethod(               "overridePendingTransition", paramTypes);      } catch (Exception e) {         e.printStackTrace();      }      Handler handler = new Handler();      handler.postDelayed(new Runnable() {         @Override         public void run() {            Intent i = new Intent(FadeSplashScreenActivity.this,                  FadeMainActivity.class);            startActivity(i);            finish();            if (overrideAnimation != null) {               try {                  overrideAnimation.invoke(FadeSplashScreenActivity.this, android.R.anim.fade_in,                        android.R.anim.fade_out);               } catch (IllegalArgumentException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();               } catch (IllegalAccessException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();               } catch (InvocationTargetException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();               }            }         }      }, 2000);         }   @Override   public void setListener() {      // TODO Auto-generated method stub         }}