Cannot show user input with a textfield - input

Question

I'm trying to use a TextField to get some user input:
public void render() {
Gdx.gl.glClear(GL11.GL_COLOR_BUFFER_BIT);
Gdx.gl.glClearColor(0, 0, 0, 0);
batch.begin();
batch.end();
stage = new Stage();
Gdx.input.setInputProcessor(stage);
Skin skin = new Skin(Gdx.files.internal("assets/uiskin.json"));
TextButton btnLogin = new TextButton("Click", skin);
btnLogin.setPosition(300, 300);
btnLogin.setSize(300, 60);
btnLogin.addListener(new ClickListener() {
public boolean touchDown(InputEvent e, float x, float y, int point, int button) {
System.out.println(txfUsername.getText());
return false;
}
});
txfUsername = new TextField("", skin);
txfUsername.setPosition(300, 250);
txfUsername.setSize(300, 40);
stage.addActor(txfUsername);
stage.addActor(btnLogin);
stage.act();
stage.draw();
}
All I get is a blank field. The user can't interact with it in any way.
I followed the instructions in this video
How do I make the textfield editable?

Answer 1

You use txfUsername = new TextField ("", skin); in your render method. That creates a new TextField from scratch on each render.
public void render() {
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
batch.begin();
// do other rendering ...
batch.end();
Gdx.app.log("MyTextField", txfUsername.getText());
stage.act(Gdx.graphics.getDeltaTime());
stage.draw();
}
In your class variables:
private TextButton btnLogin;
TextField txfUsername;
In your method show or create (not render):
#Override
public void show() {
btnLogin = new TextButton("Click", skin);
btnLogin.setPosition(300, 300);
btnLogin.setSize(300, 60);
btnLogin.addListener(new ClickListener() {
public boolean touchDown(InputEvent e, float x, float y, int point, int button) {
System.out.println(txfUsername.getText());
return false;
}
});
txfUsername = new TextField("", skin);
txfUsername.setPosition(300, 250);
txfUsername.setSize(300, 40);
stage.addActor(txfUsername);
stage.addActor(btnLogin);
}
Use txfUsername.getText(); written for the field
Edit: I do not know how you worked with GL11, if GL10, I could understand a you malfunction, if you get error in GL10, you should update libgdx, GL10 is an interface and I think last versions for in libgdx not bring already