2s打开式使用到了反射效果很棒-优快云博客

本文详细介绍了如何在Android应用中实现启动画面的淡入淡出动画效果，并通过反射机制进行方法调用，实现流畅的用户体验提升。通过设置特定的动画过渡，使应用程序在启动时呈现出视觉上的平滑过渡，增强用户的第一印象。

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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
      
   }
}