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最近刚开始使用 libgdx,我想检查如何让我的键盘输入显示在文本字段上?

谢谢。

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2 回答 2

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如果您正在寻找键盘,那么来自 Kumar 的链接就可以了,如果您想显示要显示的文本,那么您需要使用 InputProcessor LibGDX InputProcessor从键盘获取输入

但是,要从键盘获取输入并仍然对屏幕上的任何其他项目进行输入,您需要将其与 InputMultiplexer LibGDX InputMultiPlexer结合起来,后者可以处理多个 InputProcessors

例如,如果您有一个要处理输入的 Stage,并且您希望键盘经常弹出以进行文本输入,则可以在 Create() 中的某个位置为您的键盘创建一个新的 InputProcessor。

keyboardProcessor = new InputProcessor() {

        @Override
        public boolean touchUp(int screenX, int screenY, int pointer, int button) {
            // TODO Auto-generated method stub
            //dLog("This is the new processor");
            return false;
        }

        @Override
        public boolean touchDragged(int screenX, int screenY, int pointer) {
            // TODO Auto-generated method stub
            //dLog("This is the new processor");
            return false;
        }

        @Override
        public boolean touchDown(int screenX, int screenY, int pointer, int button) {
            // TODO Auto-generated method stub
            //dLog("This is the new processor");
            return false;
        }

        @Override
        public boolean scrolled(int amount) {
            // TODO Auto-generated method stub
            //dLog("This is the new processor");
            return false;
        }

        @Override
        public boolean mouseMoved(int screenX, int screenY) {
            // TODO Auto-generated method stub
            //dLog("This is the new processor");
            return false;
        }

        @Override
        public boolean keyUp(int keycode) {
            // TODO Auto-generated method stub
            //dLog("This is the new processor");
            return false;
        }

        @Override
        public boolean keyTyped(char character) {
            if(newChatMessage == null){
                return false;
            }

            if((int) character == 10  || (int) character == 13){
                dLog("sending in keyTyped");
                sendChatMessage();
                return false;
            }

            final String originalChatMessage = newChatMessage;

            String tempChatMessage = null;
        //  dLog("q1");
            if((int)character == 8){
        //      dLog("q2");
                if(originalChatMessage.length() > 0 ){
                    tempChatMessage = originalChatMessage.substring(0, originalChatMessage.length() - 1);
                } else {
                    tempChatMessage = "";
                    Gdx.app.postRunnable(new Runnable() {

                        @Override
                        public void run() {

                            Assets.soundDoubleBuzzer.play();
                        }

                    });
                }
            } else {
                if(originalChatMessage.length() >= 14){
                    tempChatMessage = originalChatMessage;
                    //dLog("q3");
                    Gdx.app.postRunnable(new Runnable() {

                        @Override
                        public void run() {
                            Assets.soundDoubleBuzzer.play();
                        }

                    });
                } else {
                    tempChatMessage = originalChatMessage + character;
                }
            }
        //  dLog("q4");
            final String realTemp = tempChatMessage;
        //  dLog("q5");
        //  dLog("user pressed character:" + (int)(character));
        //  dLog("current message is :" + realTemp);
            Gdx.app.postRunnable(new Runnable() {

                @Override
                public void run() {
                    lblChat.setText(realTemp);
                    newChatMessage = realTemp;
                }

            });

            return false;
        }

        @Override
        public boolean keyDown(int keycode) {
            // TODO Auto-generated method stub
            //dLog("This is the new processor");
            return false;
        }
    };

填写 TextField 需要注意的部分是 KeyTyped() 事件。每次输入字符时,它都会调用该方法

然后,将两个 InputProcessor 添加到 MultiPlexer,然后将 Gdx.input 设置为 multiPlexer。(Stage 还实现了 InputProcessor...)

private InputMultiplexer multiPlexer;
multiPlexer.addProcessor(keyboardProcessor);
    multiPlexer.addProcessor(stage);
    Gdx.input.setInputProcessor(multiPlexer);

这允许两个处理器同时工作……多路复用器中的第一个处理器首先处理输入……如果它返回 false,并且另一个 inputProcessor 可以处理它,那么它将被传递。 ..否则它被忽略..

于 2013-09-21T09:23:57.720 回答
1
private String txtVal;

TextField textField= new TextField("textField Vallue", skin);

        textField.setTextFieldListener(new TextFieldListener() {

            @Override
            public void keyTyped(TextField textField, char key) {
                    txtVal= textField.getText();
            }
        });

 System.out.println(txtVal);
于 2014-03-06T06:37:09.097 回答