在桌面模式下，屏幕加载完全正常，但在HTC One M8上加载下一个屏幕之前，屏幕会冻结约一两秒。
这发生在我的所有屏幕上，所以我只会展示两个。我尝试在上一个屏幕中为下一个屏幕加载所有资源，然后在加载下一个屏幕之前检查它们是否使用assets.update()加载，但冻结仍然发生。
public class MenuScreen implements Screen, InputProcessor {
private Application game;
private OrthographicCamera cam;
private Viewport viewport;
private GameIcon gameIcon;
private ParticleEffect effect;
private MenuBackground mb, mb2;
private Texture title_background, title, play_button, instructions_button, about_button, black_bottom;
private Sprite titleSprite, playButtonSprite, instructionsButtonSprite, aboutButtonSprite, blackBottomSprite;
private GameButton playBtn, instructionsBtn, aboutBtn;
private static Music title_music;
private long timeTouchUp;
private boolean playUp, instructionsUp, aboutUp;
private int touchX, touchY;
private AssetManager assets; //loaded in SplashScreen
public MenuScreen(Application game, AssetManager assets){
this.game = game;
Gdx.input.setInputProcessor(this);
cam = new OrthographicCamera();
cam.setToOrtho(false, Application.WIDTH, Application.HEIGHT);
viewport = new FitViewport(Application.WIDTH, Application.HEIGHT, cam);
this.assets = assets;
queueAssets();
title_background = assets.get("menu/title_background.png", Texture.class);
title = assets.get("menu/title.png", Texture.class);
play_button = assets.get("menu/play_button.png", Texture.class);
instructions_button = assets.get("menu/instructions_button.png", Texture.class);
about_button = assets.get("menu/about_button.png", Texture.class);
black_bottom = assets.get("menu/black_bottom.png", Texture.class);
titleSprite = new Sprite(title);
playButtonSprite = new Sprite(play_button);
instructionsButtonSprite = new Sprite(instructions_button);
aboutButtonSprite = new Sprite(about_button);
blackBottomSprite = new Sprite(black_bottom);
playBtn = new GameButton();
instructionsBtn = new GameButton();
aboutBtn = new GameButton();
mb = new MenuBackground(1);
mb2 = new MenuBackground(2);
title_music = assets.get("music/title_screen.mp3", Music.class);
title_music.setLooping(true);
title_music.play();
gameIcon = new GameIcon(Application.WIDTH/2 - Application.WIDTH/10, Application.HEIGHT/10);
effect = new ParticleEffect();
effect.load(Gdx.files.internal("game/particles1.party"), Gdx.files.internal("game"));
effect.start();
timeTouchUp = 0;
//setting things
mb.getSprite().setX(0);
mb2.getSprite().setX(0);
blackBottomSprite.setSize(Application.WIDTH, Application.HEIGHT * 3 / 4);
blackBottomSprite.setAlpha(1f);
titleSprite.setSize(Application.WIDTH, Application.WIDTH * 0.5f); //width, height
titleSprite.setPosition(Application.WIDTH / 2 - titleSprite.getWidth() / 2, Application.HEIGHT / 2 * 1.35f);
playBtn.setTexture(play_button);
playBtn.setOrigSize(titleSprite.getWidth() * 0.7f, titleSprite.getWidth() * 0.127f);
playBtn.setOrigPosition(cam.position.x - playBtn.getWidth() / 2, cam.position.y + 80);
instructionsBtn.setTexture(instructions_button);
instructionsBtn.setOrigSize(titleSprite.getWidth() * 0.7f, titleSprite.getWidth() * 0.127f);
instructionsBtn.setOrigPosition(cam.position.x - instructionsBtn.getWidth() / 2, cam.position.y + 10);
aboutBtn.setTexture(about_button);
aboutBtn.setOrigSize(titleSprite.getWidth() * 0.7f, titleSprite.getWidth() * 0.127f);
aboutBtn.setOrigPosition(cam.position.x - aboutBtn.getWidth() / 2, cam.position.y - 60);
gameIcon.setSize(50, 50);
gameIcon.setPosition(Application.WIDTH / 2 - Application.WIDTH / 20, Application.HEIGHT / 10 + 10);
gameIcon.setvX(0);
gameIcon.setvY(0);
}
public void queueAssets() {
assets.load("fonts/fixedsys.fnt", BitmapFont.class);
assets.load("menu/black_bottom.png", Texture.class);
assets.load("level_select/play_level.png", Texture.class);
}
@Override
public void show() {
}
@Override
public void render(float delta) {
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
cam.update();
game.batch.setProjectionMatrix(cam.combined);
game.batch.begin();
mb.update();
mb2.update();
mb.getSprite().setY(mb.getPosition().y);
mb2.getSprite().setY(mb2.getPosition().y);
mb.getSprite().draw(game.batch);
mb2.getSprite().draw(game.batch);
blackBottomSprite.draw(game.batch);
titleSprite.draw(game.batch);
playBtn.update();
playBtn.draw(game.batch);
instructionsBtn.update();
instructionsBtn.draw(game.batch);
aboutBtn.update();
aboutBtn.draw(game.batch);
gameIcon.draw(game.batch);
effect.getEmitters().first().setPosition(Application.WIDTH / 2 - Application.WIDTH / 20 + gameIcon.getWidth() / 2, Application.HEIGHT / 10 + 10); //doesnt follow gameIcon
effect.update(delta);
effect.draw(game.batch);
game.batch.end();
gameIcon.update();
if (TimeUtils.timeSinceMillis(timeTouchUp) > 100 && assets.update()) {
if (playUp) {
game.setScreen(new LevelSelectScreen(game, assets, mb.getSprite().getY(), mb2.getSprite().getY(), gameIcon));
dispose();
}
else if(instructionsUp) {
}
else if(aboutUp) {
}
}
}
public static void stopMenuMusic()
{
title_music.stop();
title_music.dispose();
}
@Override
public void resize(int width, int height) {
viewport.update(width, height);
}
@Override
public void pause() {
}
@Override
public void resume() {
}
@Override
public void hide() {
}
@Override
public void dispose() {
title_background.dispose();
title.dispose();
play_button.dispose();
instructions_button.dispose();
about_button.dispose();
}
@Override
public boolean keyDown(int keycode) {
return true;
}
@Override
public boolean keyUp(int keycode) {
return true;
}
@Override
public boolean keyTyped(char character) {
return true;
}
@Override
public boolean touchDown(int screenX, int screenY, int pointer, int button) {
touchX = GameButton.convertX(screenX);
touchY = GameButton.convertY(screenY);
if(playBtn.checkCoords(touchX, touchY))
{
playBtn.clickDown();
}
else if(instructionsBtn.checkCoords(touchX, touchY))
{
instructionsBtn.clickDown();
}
else if(aboutBtn.checkCoords(touchX, touchY))
{
aboutBtn.clickDown();
}
return true;
}
@Override
public boolean touchUp(int screenX, int screenY, int pointer, int button) {
timeTouchUp = TimeUtils.millis();
if (playBtn.checkCoords(touchX, touchY)) {
playUp = true;
playBtn.clickUp();
}
else if(instructionsBtn.checkCoords(touchX, touchY))
{
instructionsUp = true;
instructionsBtn.clickUp();
}
else if(aboutBtn.checkCoords(touchX, touchY))
{
aboutUp = true;
aboutBtn.clickUp();
}
return true;
}
@Override
public boolean touchDragged(int screenX, int screenY, int pointer) {
return true;
}
@Override
public boolean mouseMoved(int screenX, int screenY) {
return true;
}
@Override
public boolean scrolled(int amount) {
return true;
}
public boolean isClicked(Sprite sprite, float x, float y)
{
if (x >= sprite.getX() && x <= sprite.getX() + sprite.getWidth())
{
if (y >= sprite.getY() && y <= sprite.getY() + sprite.getHeight())
{
return true;
}
}
return false;
}
}
点击上面屏幕上的按钮后，它应该加载这个：
public class LevelSelectScreen implements Screen, InputProcessor{
private Application game;
private OrthographicCamera cam;
private Viewport viewport;
private ParticleEffect effect;
private Texture black_bottom, play_level_button;
private Sprite blackBottomSprite;
private String[] levelNames;
private int maxLevel, level, touchX, touchY;
private long timeTouchUp;
private GameButton playLevelBtn;
private GameIcon gameIcon;
private MenuBackground mb, mb2;
private boolean playUp;
private BitmapFont font;
public GlyphLayout levelLayout, levelNameLayout;
private AssetManager assets; //loaded in MenuScreen
public LevelSelectScreen(Application game, AssetManager assets, float mbY, float mb2Y, GameIcon gameIcon) {
this.game = game;
Gdx.input.setInputProcessor(this);
this.assets = assets;
queueAssets();
levelNames = new String[2];
levelNames[0] = "PLACEHOLDER";
levelNames[1] = "Taking Off";
maxLevel = levelNames.length - 1;
level = 1;
font = assets.get("fonts/fixedsys.fnt", BitmapFont.class);
font.setColor(Color.BLACK);
levelLayout = new GlyphLayout(font, "Level " + level);
levelNameLayout = new GlyphLayout(font, levelNames[0]);
cam = new OrthographicCamera();
cam.setToOrtho(false, Application.WIDTH, Application.HEIGHT);
viewport = new FitViewport(Application.WIDTH, Application.HEIGHT, cam);
mb = new MenuBackground(mbY, true);
mb2 = new MenuBackground(mb2Y, true);
this.gameIcon = new GameIcon(Application.WIDTH / 2 - Application.WIDTH / 20, Application.HEIGHT / 10 + 10);
black_bottom = assets.get("menu/black_bottom.png", Texture.class);
play_level_button = assets.get("level_select/play_level.png", Texture.class);
blackBottomSprite = new Sprite(black_bottom);
//setting stuff
mb.getSprite().setX(0);
mb2.getSprite().setX(0);
blackBottomSprite.setSize(Application.WIDTH, Application.HEIGHT * 3 / 4);
blackBottomSprite.setAlpha(1f);
this.gameIcon.setRotation(gameIcon.getRotation());
this.gameIcon.setSize(gameIcon.getWidth(), gameIcon.getHeight());
this.gameIcon.setvX(0);
this.gameIcon.setvY(0);
playLevelBtn = new GameButton();
playLevelBtn.setTexture(play_level_button);
playLevelBtn.setOrigSize(150, 90);
playLevelBtn.setOrigPosition(
Application.WIDTH / 2 - playLevelBtn.getWidth() / 2,
this.gameIcon.getX() + this.gameIcon.getHeight() + 70);
effect = new ParticleEffect();
effect.load(Gdx.files.internal("game/particles1.party"), Gdx.files.internal("game"));
effect.start();
playUp = false;
}
public void queueAssets() {
assets.load("game/backgrounds/shadow_mask.png", Texture.class);
assets.load("game/backgrounds/background_orange.png", Texture.class);
assets.load("game/border_left.png", Texture.class);
assets.load("game/border_right.png", Texture.class);
assets.load("game/backgrounds/white_only.png", Texture.class);
assets.load("game/backgrounds/circles_pattern.png", Texture.class);
}
@Override
public void show() {
}
@Override
public void render(float delta) {
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
cam.update();
game.batch.setProjectionMatrix(cam.combined);
game.batch.begin();
mb.update();
mb2.update();
mb.getSprite().setY(mb.getPosition().y);
mb2.getSprite().setY(mb2.getPosition().y);
mb.getSprite().draw(game.batch);
mb2.getSprite().draw(game.batch);
blackBottomSprite.draw(game.batch);
gameIcon.update();
gameIcon.draw(game.batch);
levelLayout.setText(font, "Level " + level);
levelNameLayout.setText(font, levelNames[level]);
font.draw(
game.batch,
"Level " + level,
Application.WIDTH / 2 - levelLayout.width / 2,
Application.HEIGHT / 2 + levelLayout.height / 2
);
effect.getEmitters().first().setPosition(Application.WIDTH / 2 - Application.WIDTH / 20 + gameIcon.getWidth() / 2, Application.HEIGHT / 10 + 10); //doesnt follow gameIcon
effect.update(delta);
effect.draw(game.batch);
playLevelBtn.update();
playLevelBtn.draw(game.batch);
game.batch.end();
if (TimeUtils.timeSinceMillis(timeTouchUp) > 100 && assets.update()) {
if (playUp) { game.setScreen(new com.xx4everPixelatedxx.gaterunner.screens.Levels.Level1Screen(game, assets));
MenuScreen.stopMenuMusic();
dispose();
}
}
}
@Override
public void resize(int width, int height) {
viewport.update(width, height);
}
@Override
public void pause() {
}
@Override
public void resume() {
}
@Override
public void hide() {
}
@Override
public void dispose() {
}
@Override
public boolean keyDown(int keycode) {
return false;
}
@Override
public boolean keyUp(int keycode) {
return false;
}
@Override
public boolean keyTyped(char character) {
return false;
}
@Override
public boolean touchDown(int screenX, int screenY, int pointer, int button) {
touchX = GameButton.convertX(screenX);
touchY = GameButton.convertY(screenY);
if(playLevelBtn.checkCoords(touchX, touchY))
{
playLevelBtn.clickDown();
}
return true;
}
@Override
public boolean touchUp(int screenX, int screenY, int pointer, int button) {
timeTouchUp = TimeUtils.millis();
if (playLevelBtn.checkCoords(touchX, touchY)) {
playUp = true;
playLevelBtn.clickUp();
}
return true;
}
@Override
public boolean touchDragged(int screenX, int screenY, int pointer) {
return false;
}
@Override
public boolean mouseMoved(int screenX, int screenY) {
return false;
}
@Override
public boolean scrolled(int amount) {
return false;
}
}
如果您现在还没有猜到，我的问题是：如何让我的Android设备上的屏幕转换花费更少的时间？
答案 0 :(得分：2)
我更确定您的问题出在加载资源中。请注意，虽然您要在 MenuScreen 中加载 LevelSelectScreen 的资源，但您仍在LevelSelect构造函数中调用 queueAssets（）; 。
进行一些测试 - 使用它们删除所有资产和ui元素，然后检查加载时间。
首先使用TextureAtlas将加载的纹理打包到TexturePacker中，以减少加载纹理的数量。 I / O操作非常昂贵。
其次，您可以创建ResourcesManager（例如实现Singleton）并保留其静态实例，在应用程序的开始时加载所有资源。