Question

最近刚开始使用libgdx，我想检查如何从键盘输入显示在文本字段上？

感谢。

Answer 1

如果您正在寻找键盘，那么Kumar的链接就可以了，如果您想要显示文本，那么您需要使用InputProcessor LibGDX InputProcessor来获取键盘的输入

但是，要从键盘获取输入并仍然输入屏幕上的任何其他项目，您需要将其与可以处理多重输入处理器的InputMultiplexer LibGDX InputMultiPlexer相结合

例如，如果您有一个想要处理输入的舞台，并且您希望键盘在文章输入中经常弹出，在Create（）中的某个位置，您可以为键盘创建一个新的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时需要注意的部分是KeyTyped（）事件。每次输入一个字符时，它都会调用该方法

然后，将两个InputProcessors添加到MultiPlexer，然后将Gdx.input设置为multiPlexer。（舞台也实现了一个InputProcessor ......）

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

这允许两个处理器同时运行...多路复用器的第一个进入处理输入的第一个...如果它返回false，而另一个inputProcessor可以处理它，那么它将获得传递...否则被忽略..

Answer 2

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);

Libgdx如何根据键盘输入设置文本字段？

2 个答案: