How to change button and text color dynamically on android

Question

How to change the button text color and button shape(rectangle) dynamically/programmatically?

saerch SO for such questions http://stackoverflow.com/questions/4755871/how-to-set-image-button-backgroundimage-for-different-state/4755934#4755934 — ingsaurabh, Nov 03 '11 at 07:37

Hiral Vadodaria · Accepted Answer · 2011-11-03T07:56:53.813

If you have a button in your main.xml with id=button1 then you can use it as follows:

setContentView(R.layout.main);

Button mButton=(Button)findViewById(R.id.button1);
mButton.setTextColor(Color.parseColor("#FF0000")); // custom color
//mButton.setTextColor(Color.RED); // use default color
mButton.setBackgroundResource(R.drawable.button_shape);

R.drawable.button_shape(button_shape.xml):

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
  <gradient
      android:startColor="#70ffffff"
      android:centerColor="#70ffffff"
      android:endColor="#70ffffff"
      android:angle="270" />
  <corners 
        android:bottomRightRadius="8dp"
        android:bottomLeftRadius="8dp"
        android:topLeftRadius="8dp"
        android:topRightRadius="8dp"/>  
</shape>

You can have your own shape file.change it according to your need.

score 4 · Answer 2 · answered Nov 03 '11 at 07:44

4

You Can change Button Text Colour dynamically like

Button btnChangeTextColor = (Button)findViewbyId(btnChange); btnChangeTextColor.setTextColor(Color.BLUE);

answered Nov 03 '11 at 07:44

Hitesh Dhamshaniya

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score 1 · Answer 3 · answered Nov 03 '11 at 07:38

Basically you have to follow the scheme:

1) get reference to the object you want to change

findViewById(R.id.<your_object_id>);

2) cast it to the object type

Button btnYourButton = (Button) findViewById(R.id.<your_object_id>);

3) Use setters on the object "btnYourButton"

4) Redraw your View (possibly calling invalidate());

It depends when do you want the change to happen. I assume you will have an eventListener attached to your object, and after the event is fired you will perform your change.

score 0 · Answer 4 · answered Sep 27 '12 at 05:31

@Override public boolean onTouchEvent(MotionEvent event) {

    if (event.getAction() == MotionEvent.ACTION_DOWN) {

        start_x = event.getX();
        start_y = event.getY();

    } else if (event.getAction() == MotionEvent.ACTION_MOVE) {

        setTitle(event.getX() + "y pos" + event.getY());
        RelativeLayout layout = (RelativeLayout) findViewById(R.id.lay);

        layout.setBackgroundColor(Color.rgb((int) start_x, (int) start_y, 0));
    } else if (event.getAction() == MotionEvent.ACTION_UP) {



    }
    return true;
}

score 0 · Answer 5 · answered Nov 03 '11 at 07:41

You'll need some type of listener where you listen for an event to occur, and when it does change the shape/text color using some set methods.

Try:

http://developer.android.com/reference/android/view/View.OnClickListener.html

To give more pointed feedback I'd need to know what signal you want to have in order to change the text color and shape. Can you give more detail on what you mean by change dynamically?

How to change button and text color dynamically on android

5 Answers5