Android 跳转动画问题

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {

            if (e1.getY() - e2.getY() > FLIP_DISTANCE) {
                Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                overridePendingTransition(R.anim.anim_come ,R.anim.anim_go);
                startActivity(intent);
            }
            return false;
        }

                    anim_come.xml
                    <?xml version="1.0" encoding="utf-8"?>

android:duration="@android:integer/config_longAnimTime"
android:fromYDelta="-100%p"
android:toYDelta="0" />

    anim_go.xml
    <?xml version="1.0" encoding="utf-8"?>

android:duration="@android:integer/config_longAnimTime"
android:fromYDelta="0"
android:toYDelta="100%p" />

    各位版主大神，这样写没有跳转效果

overridePendingTransition(R.anim.anim_come ,R.anim.anim_go);
startActivity(intent);这两句位置换一下