我的InputListener有问题。 我创建了一个扩展TextButton的类来创建带边框的TextButtons和一个默认的Inputlistener。在我的主要代码中，我想再添加一个Inputlistener来设置一个新的屏幕（在我的代码中它只是一个打印，如果有效），但只有touchDown工作...
My TextButtonWithBorder类：
public class TextButtonWithBorder extends TextButton {
ShapeRenderer shapeRenderer = new ShapeRenderer();
public TextButtonWithBorder(String text, Skin skin) {
super(text, skin);
this.setTransform(true);
this.addReduceClickListener();
}
public TextButtonWithBorder(String text, Skin skin, String styleName) {
super(text, skin, styleName);
this.setTransform(true);
this.addReduceClickListener();
}
public TextButtonWithBorder(String text, TextButtonStyle style) {
super(text, style);
this.setTransform(true);
this.addReduceClickListener();
}
@Override
public void draw(Batch batch, float parentAlpha) {
batch.end();
shapeRenderer.setProjectionMatrix(batch.getProjectionMatrix());
shapeRenderer.begin(ShapeRenderer.ShapeType.Line);
shapeRenderer.setColor(Color.WHITE);
shapeRenderer.rect(getX(),getY(),getWidth()*getScaleX(),getHeight()*getScaleY());
shapeRenderer.end();
batch.begin();
super.draw(batch, parentAlpha);
}
public void setCenter(float x,float y)
{
setPosition(x-getWidth()/2*getScaleX(),y-getHeight()/2*getScaleY());
}
public void setCenter(Vector2 center)
{
setPosition(center.x-getWidth()/2*getScaleX(),center.y-getHeight()/2*getScaleY());
}
public Vector2 getCenter()
{
return new Vector2(getX()+getWidth()/2*getScaleX(),getY()+getHeight()/2*getScaleY());
}
public void addReduceClickListener()
{
addListener((new InputListener(){
public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {
Vector2 center = getCenter();
setScale(0.9F);
setCenter(center);
return true;
}
public void touchUp (InputEvent event, float x, float y, int pointer, int button) {
Vector2 center = getCenter();
setScale(1F);
setCenter(center);
}
}));
}
public void dispose()
{
shapeRenderer.dispose();
}
}
我的主要代码：
public class MainMenuScreen implements Screen {
final PongAndroid game;
Stage stage;
BitmapFont font;
TextButtonWithBorder buttonOnePlayer;
TextButtonWithBorder buttonTwoPlayers;
TextButtonWithBorder buttonAbout;
TextButtonWithBorder buttonExit;
Label title;
ImageButton options;
public MainMenuScreen(final PongAndroid game) {
this.game=game;
stage = new Stage(game.viewport,game.batch);
Gdx.input.setInputProcessor(stage);
// Styles
font = new BitmapFont(Gdx.files.internal("MVboli50.fnt"));
TextButton.TextButtonStyle textButtonStyle = new TextButton.TextButtonStyle();
textButtonStyle.font = font;
Label.LabelStyle labelStyle = new Label.LabelStyle();
labelStyle.font = font;
ImageButton.ImageButtonStyle imageButtonStyle = new ImageButton.ImageButtonStyle();
// Configure Actors
// title
title = new Label("Pong Android",labelStyle);
title.setFontScale(2f);
title.setPosition(game.WIDTH/2-title.getWidth()/2*title.getFontScaleX(),game.HEIGHT-title.getHeight()-(game.HEIGHT*0.15f));
// buttonOnePlayer
buttonOnePlayer = new TextButtonWithBorder("1 Player",textButtonStyle);
buttonOnePlayer.setWidth(game.WIDTH*0.70f);
buttonOnePlayer.setHeight(buttonOnePlayer.getHeight()*1.2f);
buttonOnePlayer.setPosition(game.WIDTH/2-buttonOnePlayer.getWidth()/2,title.getY()-title.getHeight()/2-buttonOnePlayer.getHeight()-game.HEIGHT*0.05f);
//buttonTwoPlayer
buttonTwoPlayers = new TextButtonWithBorder("2 Players",textButtonStyle);
buttonOnePlayer.setTransform(true);
buttonTwoPlayers.setWidth(buttonOnePlayer.getWidth());
buttonTwoPlayers.setHeight(buttonTwoPlayers.getHeight()*1.2f);
buttonTwoPlayers.setPosition(buttonOnePlayer.getX(),buttonOnePlayer.getY()-buttonOnePlayer.getHeight()-game.HEIGHT*0.05f);
//buttonAbout
buttonAbout = new TextButtonWithBorder("About",textButtonStyle);
buttonOnePlayer.setTransform(true);
buttonAbout.setWidth(buttonTwoPlayers.getWidth()/2-game.WIDTH*0.05f);
buttonAbout.setHeight(buttonAbout.getHeight()*1.2f);
buttonAbout.setPosition(buttonTwoPlayers.getX(),buttonTwoPlayers.getY()-buttonAbout.getHeight()-game.HEIGHT*0.05f);
//buttonExit
buttonExit = new TextButtonWithBorder("Exit",textButtonStyle);
buttonOnePlayer.setTransform(true);
buttonExit.setWidth(buttonAbout.getWidth());
buttonExit.setHeight(buttonExit.getHeight()*1.2f);
buttonExit.setPosition(buttonAbout.getX()+buttonAbout.getWidth()+game.WIDTH*0.1f, buttonAbout.getY());
// Add listeners to Actors
buttonExit.addListener(new InputListener(){
@Override
public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
System.out.println("down");
return super.touchDown(event, x, y, pointer, button);
}
@Override
public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
System.out.println("up");
super.touchUp(event, x, y, pointer, button);
System.out.println("up");
}
});
// Add Actors to stage
stage.addActor(title);
stage.addActor(buttonOnePlayer);
stage.addActor(buttonTwoPlayers);
stage.addActor(buttonAbout);
stage.addActor(buttonExit);
//stage.addActor();
}
@Override
public void show() {
}
@Override
public void render(float delta) {
stage.act(delta);
stage.draw();
}
@Override
public void resize(int width, int height) {
}
@Override
public void pause() {
}
@Override
public void resume() {
}
@Override
public void hide() {
}
@Override
public void dispose() {
stage.dispose();
buttonOnePlayer.dispose();
buttonTwoPlayers.dispose();
buttonAbout.dispose();
buttonExit.dispose();
}
}
我的问题是如何将多个InputListener添加到Actor？
答案 0 :(得分：0)
为两个InputListeners返回true以处理touchUp事件。单击一次时，这是我的输出：
listener A: touchDown
listener B: touchDown
listener A: touchUp
listener B: touchUp
代码：
private SpriteBatch batch;
private Viewport viewport;
private Stage stage;
private Texture texture;
private BitmapFont font;
@Override
public void create() {
batch = new SpriteBatch();
viewport = new StretchViewport( Gdx.graphics.getWidth(), Gdx.graphics.getHeight() );
stage = new Stage( viewport, batch );
texture = new Texture( "badlogic.jpg" );
font = new BitmapFont();
Gdx.input.setInputProcessor( stage );
TextButton.TextButtonStyle textButtonStyle = new TextButton.TextButtonStyle(
new TextureRegionDrawable( new TextureRegion( texture ) ), null, null, font );
TextButton textButton = new TextButton( "text", textButtonStyle );
textButton.setPosition(
0.5f * Gdx.graphics.getWidth() - 0.5f * textButton.getWidth(),
0.5f * Gdx.graphics.getHeight() - 0.5f * textButton.getHeight()
);
textButton.addListener( new InputListener(){
@Override
public boolean touchDown( InputEvent e, float x, float y, int pointer, int button ) {
Gdx.app.log( "listener A", "touchDown" );
return true;
}
@Override
public void touchUp( InputEvent e, float x, float y, int pointer, int button ) {
Gdx.app.log( "listener A", "touchUp" );
}
} );
textButton.addListener( new InputListener(){
@Override
public boolean touchDown( InputEvent e, float x, float y, int pointer, int button ) {
Gdx.app.log( "listener B", "touchDown" );
return true;
}
@Override
public void touchUp( InputEvent e, float x, float y, int pointer, int button ) {
Gdx.app.log( "listener B", "touchUp" );
}
} );
stage.addActor( textButton );
}
@Override
public void dispose() {
batch.dispose();
stage.dispose();
texture.dispose();
font.dispose();
}
@Override
public void resize( int width, int height ) {
viewport.update( width, height, true );
}
@Override
public void render() {
Gdx.gl.glClearColor( 0, 0, 0, 1 );
Gdx.gl.glClear( GL20.GL_COLOR_BUFFER_BIT );
stage.act( Gdx.graphics.getDeltaTime() );
stage.draw();
}
答案 1 :(得分：0)
LibGDX中的按钮已经内置了InputListener，可以稳健地处理不同的按钮和悬停状态。您应该添加ChangeListener来响应按下按钮，而不是添加自己的InputListener。