Selector on Background Color of Textview

Selector on background color of TextView

The problem here is that you cannot define the background color using a color selector, you need a drawable selector. So, the necessary changes would look like this:

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

You would also need to move that resource to the drawable directory where it would make more sense since it's not a color selector per se.

Then you would have to create the res/drawable/selected_state.xml file like this:

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
    android:shape="rectangle">
    <solid android:color="@color/semitransparent_white" />
</shape>

and finally, you would use it like this:

android:background="@drawable/selector"

Note: the reason why the OP was getting an image resource drawn is probably because he tried to just reference his resource that was still in the color directory but using @drawable so he ended up with an ID collision, selecting the wrong resource.

Hope this can still help someone even if the OP probably has, I hope, solved his problem by now.

Android: How to use selector for background of a TextView?

Set this to your TextView:

android:clickable="true"

Changing TextView background color on click

When specifying a drawable for a background

android:background="@drawable/selectors"

the item selectors in selectors.xml requires you to have the drawable attribute set.

You're setting the color attribute which won't work.

Instead change color to drawable.

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

Here's a reference. Refer to the item tag section.

android:drawable

   Drawable resource. Required. Reference to a drawable resource.

Changing TextView background color on click android

If the textview is clicked the background changes to yellow and remains yellow until it is click again. Then it returns to its default background.

It's a matter of logic as you need to keep in your click listener the current click state.(blind coding):

textView.setOnClickClickListener(new View.OnClickListener() {
    private boolean stateChanged;
    public void onClick(View view) {
        if(stateChanged) {
            // reset background to default;
            textView.setBackgroundDrawable(circleOffDrawable);
        } else {
            textView.setBackgroundDrawable(circleOnDrawable);
        }
        stateChanged = !stateChanged;
    }
});

To improve the answer, you should keep stateChanged flag in the activity and retain its value across activity recreations - if the user rotates the activity. (Store the flag in onSaveInstanceState and restore in onCreate if its parameter is not null.)

how to change the textView color from selector

Just try with this code -

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
}
public void clickme(View view)
{
    TextView tv = (TextView)findViewById(R.id.textView1);
    tv.setTextColor(Color.RED);             
}

Main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:onClick="clickme"
android:orientation="vertical" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:text="Large Text"
    android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>

Try this with your Selector.

Selector on TextView does not change color

Use getColorStateList() instead of getColor().

If you support < API 23, you can use the helper method,

ContextCompat.getColorStateList(context, R.color.your_selector);

Javadoc of the getColor():

Returns a color integer associated with a particular resource ID. If
the resource holds a complex {@link ColorStateList}, then the default
color from the set is returned.

JavaDoc of the getColorStateList():

Returns a color state list associated with a particular resource ID.
The resource may contain either a single raw color value or a complex
{@link ColorStateList} holding multiple possible colors.

Programatically make TextView background color change while pressed

You are on the right track. However there is an important detail.

There are two types of resources that can be affected by states: ColorStateList and StateListDrawable.

A color state list can only be used in certain contexts, for example in TextView.setTextColor(). As far as I can see, you cannot use a color state list as parameter of setBackgroundColor() if you want to change the background of a View when it's pressed. You need a state list drawable for that. And in a state list drawable, the android:drawable attribute is mandatory.

So, to sum up:

• The xml file should be placed in res\drawable,
• Its structure should be slightly different (i.e. state list, not color list), and
• You need to use setBackgroundResource() instead of setBackgroundColor().

Example file:

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

If you want to use custom colors instead of white and black, you simply need to define them as resources in res\values and reference them from here.

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