Android – Textview change color on changing of state-ThrowExceptions

Exception or error:

How can I apply color on the various states(focused, pressed, enabled) of the TextView?

I have already referred this: http://developer.android.com/reference/android/content/res/ColorStateList.html , but do not know how can I apply color state list to the TextView? or is there any other way to do so ?

Update:

I want to change the Background color.

How to solve:

Create new a new xml (in the drawable folder). with the color you can specify image for each event state
and you can you can set this xml as you background

if your xml is ‘res/drawable/abc.xml‘ then set background as

android:background="@drawable/abc"

Edited to add color in state xml
our xml, res/drawable/abc.xml

<?xml version="1.0" encoding="utf-8"?>
   <selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true"   
    android:drawable="@color/gray" />
</selector>

Then declare gray in your res\values\strings.xml

<color name="gray">#808080</color>

###

create xml under res/color dir.

example file name : selector_white_gray.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
          android:color="@color/Gray"/> <!-- pressed -->
    <item android:color="@color/White"/> <!-- default -->
</selector>

you can add more states. you can use color code like “#ffffff” instead of predefined “@color/White”.
Becarefull, use android:color not android:drawable. this example changes color of text when pressed on it. set the textColor attribute to selector above.

<TextView
       android:layout_width="wrap_content"
       android:layout_weight="1"
       android:layout_height="wrap_content"
       android:textColor="@color/selector_white_gray"
       android:textSize="18sp" 
       android:textStyle="bold" >
</TextView>

###

If you want to change color of the text – you create it as an xml in res/color folder ( for example res/color/mycolor.xml
and then in your TextView you assig it color as android:textColor="@color/mycolor"

For changing background see other answer.

###

It’s easy. Just intercept desired event and write smth like:

TextView textView=(TextView)findViewById(R.id.myText);
String s=getString(R.string.myText);
SpannableString ss=new SpannableString(s);
ss.setSpan(new ForegroundColorSpan(Color.RED), 0, s.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
textView.setText(ss);

###

textView = (TextView)findViewById(R.id.myTextView);
mMainView.setOnClickListener(new OnClickListener(){

    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        textView.setTextColor(Color.GREEN);//set the color here
    }

});

Leave a Reply

Your email address will not be published. Required fields are marked *