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Constantly updating and changing text in a JLabel


By : amir
Date : October 17 2020, 06:10 PM
I think the issue was by ths following , You don't want to use a JLabel for this task but a JTextArea instead You need to stop using bad words (even in the code) Follow Java naming conventions and use them consistently. firstWordLowerCaseVariable firstWordLowerCaseMethod() FirstWordUpperCaseClass ALL_WORDS_UPPER_CASE_CONSTANT For your UI to update after a new result is done, you're going to need a Swing Timer, for example: Creating an animated 4x4 grid in Java and jLabel won't show
And you'll need to call JPanel#revalidate() and JPanel#repaint() methods (in that order) inside the ActionListener of the Timer and you'll probably need to wrap the JTextArea inside a JScrollPane as well.
code :


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Constantly changing background color of JLabel


By : vladodias
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Your while loop is stopping the repaint manager from ever getting around to changing the colors.
You need to, some how, execute the request in the background, something like this
code :
public class TestLabel extends JLabel {

    private Timer timer;

    private int r = 0;
    private int g = 155;
    private int b = 12;

    public TestLabel() {

        setText("Hello world");
        setOpaque(true);

        timer = new Timer(1000, new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                System.out.println("tick");

                r = (r + 1) % 255;
                g = (g + 1) % 255;
                b = (b + 1) % 255;

                Color color = new Color(r, g, b);
                setBackground(color);

                System.out.println(color);

                if (r == 0 && b == 0 && g == 0) {

                    r = 0;
                    g = 155;
                    b = 12;

                }

                invalidate();
                revalidate();
                repaint();

            }
        });

        timer.setRepeats(true);
        timer.setCoalesce(true);
        timer.start();

    }
}
public class TestLabel extends JLabel {

    private Timer timer;

    private Object[][] colors = {{"Black", Color.BLACK},
        {"Blue", Color.BLUE},
        {"Cyan", Color.CYAN},
        {"Dark Gray", Color.DARK_GRAY},
        {"Gray", Color.GRAY},
        {"Green", Color.GREEN},
        {"Light Gary", Color.LIGHT_GRAY},
        {"Mangenta", Color.MAGENTA},
        {"Orange", Color.ORANGE},
        {"Pink", Color.PINK},
        {"Red", Color.RED},
        {"White", Color.WHITE},
        {"Yellow", Color.YELLOW}};

    public TestLabel() {

        setText("Hello world");
        setOpaque(true);

        timer = new Timer(1000, new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                System.out.println("tick");

                int index = (int) Math.round((colors.length - 1) * Math.random());

                Object[] group = colors[index];

                setBackground((Color)group[1]);
                setText((String)group[0]);

            }
        });

        timer.setInitialDelay(0);
        timer.setRepeats(true);
        timer.setCoalesce(true);
        timer.start();

    }
}

Java Changing JLabel Text changes JLabel Position


By : nemare
Date : March 29 2020, 07:55 AM
hope this fix your issue When the horizontal alignment is set to JLabel.CENTER, the text will want to expand let and right about the center position of the label.
This means that the label is doing exactly what the label was asked to do.

How to re-size constantly changing text to fit in a div with a fixed width, based on the changing of a <select>?


By : user3206207
Date : March 29 2020, 07:55 AM
This might help you The text variable contains a javascript dom object, not a jQuery object. This matters because .text() and .css() are both jQuery methods and do not work (are undefined) on plain dom objects. Your code should function correctly like so:
code :
var autoAdjust = {
    init:function(){
        var eObject = jQuery('select');
        eObject.on( "change", autoAdjust.task );
    },
    task:function(){
        var divWidth = jQuery(".containerDiv").width();
        var text = jQuery("#text");
        var fontSize = 16;

        while (text.width() > divWidth){
            text.css("font-size", "-=0.5");
        }
    }
}
autoAdjust.init();

Constantly setting animation on TextView and Constantly changing text on TextView Using “run” Method and Handler


By : Adam C. Smith
Date : March 29 2020, 07:55 AM
To fix the issue you can do Try this code below, i've tested it and it should work fine:
Your move.xml
code :
<?xml version="1.0" encoding="utf-8"?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator"
    android:fillAfter="true">

    <alpha
        android:duration="2000"
        android:fromAlpha="0.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="1.0"
        android:repeatCount="infinite"
        android:repeatMode="restart" /> <!-- i've added repeatCount and repeatMode attr -->

    <translate
        android:duration="2000"
        android:fromXDelta="70%p"
        android:toXDelta="0%p"
        android:repeatCount="infinite"
        android:repeatMode="restart"/> <!-- i've added repeatCount and repeatMode attr -->
</set>
    AnimationSet animMove; // i changed Animation to AnimationSet because i need the list of animations
    TextView intelStoryTextView;
    String[] my_string = {"Relief Rally", "OEDC Upgrades ", "US Fed to HIKE ", "Probability "};
    int position = 0; // a counter for your list of strings

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        intelStoryTextView = (TextView) findViewById(R.id.intel_story_textview);

        animMove = (AnimationSet) AnimationUtils.loadAnimation(getApplicationContext(),
                R.anim.move);

        // I get an animation from the animations list (i choose randomly the first one)
        Animation alphaAnim = animMove.getAnimations().get(0);
        // I add a listener to this animation to update text when repeating
        alphaAnim.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
            }

            @Override
            public void onAnimationEnd(Animation animation) {
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                // here i do the update
                if (position >= my_string.length) {
                    position = 0;
                }

                intelStoryTextView.setText(my_string[position]);
                position++;
            }
        });

        // I start the animation
        intelStoryTextView.startAnimation(animMove);

    }
<?xml version="1.0" encoding="utf-8"?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator"
    android:fillAfter="true">

    <alpha
        android:duration="2000"
        android:fromAlpha="0.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="1.0" />

    <translate
        android:duration="2000"
        android:fromXDelta="70%p"
        android:toXDelta="0%p"/>
</set>
    Animation mAnimMove;
    TextView mIntelStoryTextView;
    String[] mMy_string = {"Relief Rally", "OEDC Upgrades ", "US Fed to HIKE ", "Probability "};
    int mPosition = 0;
    int mInterval = 5000;
    Handler mHandler = new Handler();
    Runnable mRunnable;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mIntelStoryTextView = (TextView) findViewById(R.id.intel_story_textview);

        mAnimMove = AnimationUtils.loadAnimation(getApplicationContext(),
                R.anim.move);

        mRunnable = new Runnable() {
            @Override
            public void run() {

                if (mPosition >= mMy_string.length) {
                    mPosition = 0;
                }

                mIntelStoryTextView.setText(mMy_string[mPosition]);
                mPosition++;
                mIntelStoryTextView.startAnimation(mAnimMove);

                mHandler.postDelayed(mRunnable, mInterval);
            }
        };

        mRunnable.run();
    }

JLabel changing values through setText but not updating on screen


By : Chris Vought
Date : March 29 2020, 07:55 AM
Does that help
The timer is through a while loop - this may not be as per most people's liking, but lets forget it for the time being.
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