Android: how to use selector?

Question

I have a problem of using selector that it does not work as what I expect. I wanna click on it then it gives me reaction and I select it(By long click but I probably do it through programmatic way) then it gives me another reaction. However, it reacts nothing in result....

reaction part:

 <TableRow android:layout_width="match_parent" android:layout_height="wrap_content" android:weightSum="10" android:padding="5dp" android:background="@drawable/border_bottom" > <LinearLayout android:layout_weight="9" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:background="@drawable/selector_row"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/grey" android:text="@string/tel"/> <TextView android:id="@+id/telText" android:layout_width="wrap_content" android:textSize="18sp" android:layout_height="wrap_content" android:text="@string/blank"/> </LinearLayout> <ImageButton android:layout_weight="1" android:id="@+id/tel_call" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:src="@drawable/ic_action_call" android:background="@drawable/border_left"/> </TableRow>

selector_row.xml:

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

You MUST have a relaxed state. So it will return to THAT graphic, when not pressed/focused — Phantômaxx
– Phantômaxx, Commented Jul 23, 2014 at 8:14
how to set its normal state???I will not put any color on normal state. Can you post certain code??thx — Simon
– Simon, Commented Jul 23, 2014 at 8:16
I tried to put the selector to textview but when i press the text, it also reacts nothing — Simon
– Simon, Commented Jul 23, 2014 at 8:41

Simon · Accepted Answer · 2014-07-23 10:11:02Z

Thank you to all brothers trying hard to answer me. I have got the answer....just simply by setting android:clickable="true" at LinearLayout. Ha, it's silly.....

I remember dude who provide relating information but I ignored... sorry to him.

MashukKhan · Accepted Answer · 2016-04-05 12:01:52Z

Create an XML file and place it in the drawable folder. Open it and write the following code:

<selector xmlns:android="http://schemas.android.com/apk/res/android" > <item android:drawable="YOUR IMAGE OR COLOR" android:state_pressed="true"/> <item android:drawable="YOUR IMAGE OR COLOR" android:state_selected="true"/> <item android:drawable="YOUR IMAGE OR COLOR" android:state_focused="true"/> </selector>

Then in your main XML file, place android:background="@drawable/selector.xml"

place it in the drawable-hdpi folder It's not the right place. Put it in the /res/drawable folder, instead - since it's common to all screen densities.
No, it won't. but it's formally not correct. And it's a bad habit to put things in random places, just because it doesn't make any change

AlexBalo · Accepted Answer · 2014-07-23 09:48:33Z

What are you expecting? A reaction only when it's clicked?

Try removing removing:

android:state_selected="true"

Edit: This should be your selector:

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

What is the behaviour that you are experiencing?

Edit:

<LinearLayout android:layout_weight="9" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:background="@drawable/selector_row" android:duplicateParentState=true>

I don't know if it actually solves the problem

Are you sure you don't have another color or background over your root layout? Can you post the whole xml layout resource?
So can you tell me what is the wrong behaviour that you are experiencing?

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Android: how to use selector?

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