Android Activity界面切换添加动画特效

@Override 
      public void onCreate(Bundle savedInstanceState) { 
              super.onCreate(savedInstanceState);  

              setContentView(R.layout.SplashScreen); 
 
              new Handler().postDelayed(new Runnable() { 
                      @Override 
                      public void run() { 
                              Intent mainIntent = new Intent(SplashScreen.this,     AndroidNews.class); 
                              SplashScreen.this.startActivity(mainIntent); 
                              SplashScreen.this.finish(); 
 
                              overridePendingTransition(R.anim.mainfadein, 
                                      R.anim.splashfadeout); 
                      } 
              }, 3000); 
      }

getWindow ().setWindowAnimations ( int );

overridePendingTransition(Android.R.anim.fade_in,android.R.anim.fade_out);

overridePendingTransition(Android.R.anim.slide_in_left,android.R.anim.slide_out_right);

overridePendingTransition(R.anim.zoomin, R.anim.zoomout);