此问题与我之前的问题" Codename One - Transition from FormA to FormB to FormC"有关。
我花了很多时间尝试在Form之间进行转换,但在真实设备上没有成功(在模拟器上没有问题)。最后,我选择更改逻辑,将三个Form之间的转换替换为替换同一Form中的三个Container。想法是ReplaceAndWait()方法确保它等待替换的结束。但是......在这种情况下,代码在Codename One模拟器(使用Android和iOS皮肤)中运行良好,并且不适用于真实设备。更清楚的是:没有"淡化效果"在真实设备上(在Android 4.x和5.x上测试)。以下代码有什么问题?
from random import randrange
import pygame as pg
class Platform(pg.sprite.Sprite):
def __init__(self, x, y, width, height):
super().__init__()
self.image = pg.Surface((width, height))
self.image.fill(pg.Color('dodgerblue1'))
self.rect = self.image.get_rect(topleft=(x, y))
def main():
screen = pg.display.set_mode((640, 480))
clock = pg.time.Clock()
all_sprites = pg.sprite.Group() # This group that will contain all sprites.
# You probably want to add the platforms to a separate
# group as well, so that you can use it for collision detection.
platforms = pg.sprite.Group()
for _ in range(6): # Create six platforms at random coords.
platform = Platform(randrange(600), randrange(440), 170, 20)
platforms.add(platform)
all_sprites.add(platform)
done = False
while not done:
for event in pg.event.get():
if event.type == pg.QUIT:
done = True
all_sprites.update()
screen.fill((30, 30, 30))
all_sprites.draw(screen)
pg.display.flip()
clock.tick(30)
if __name__ == '__main__':
pg.init()
main()
pg.quit()
答案 0 :(得分:1)
这在设备上对我有用:
Form f = new Form("Fade", new BorderLayout());
Container container1 = BorderLayout.center(FlowLayout.encloseCenterMiddle(new Label(duke)));
Container container2 = BorderLayout.center(FlowLayout.encloseCenterMiddle(new Label(" ")));
Label redDuke = new Label(duke);
redDuke.getUnselectedStyle().setBgColor(0xff0000);
redDuke.getUnselectedStyle().setBgTransparency(255);
Container container3 = BorderLayout.center(FlowLayout.encloseCenterMiddle(redDuke));
f.add(CENTER, container1);
f.show();
callSerially(() -> {
container1.getParent().replaceAndWait(container1, container2, CommonTransitions.createFade(2000));
container2.getParent().replaceAndWait(container2, container3, CommonTransitions.createFade(1000));
});
但由于在设备上使用不同的淡入淡出方式,因此它在模拟器上的工作方式并不完全正确。为了提高效率,在设备和模拟器上实现淡入淡出的方式略有不同,并且某些行为可能会有所不同,特别是对于半透明/透明组件。