How to modify the background of a Tab Layout tab's text when it is focused?-CodePudding

When I tap on a Tab Layout tab, there's the focus flash that occurs for the entire tab, except when it does, you can see a black box around the text of the tab itself. I want to get rid of that black box so that when the tab is tapped, you don't see the black box around the text from the focus flash.

Here's what I mean (print screen mid-focus flash):

I want to get rid of this black box around it. I've tried setting tabBackground, background, tabIndicatorColor to transparent, but this black box remains. Any ideas as to how I can remove the black box around the text?

Here's the XML for the TabLayout:

<com.google.android.material.tabs.TabLayout
    android:id="@ id/tabLayout"
    style="@style/tabStyle"
    android:layout_width="match_parent"
    app:tabBackground="@android:color/transparent"
    app:tabMaxWidth="200dp"
    app:tabMinWidth="200dp"
    app:tabSelectedTextColor="@color/textColorSelected"
    app:tabTextColor="@color/textColorNormal"
    tools:tabTextAppearance="@style/TabTextStyle">
</com.google.android.material.tabs.TabLayout>

And then the styles for both the tabs and the text inside of them:

    <style name="TabTextStyle">
       <item name="android:textSize">25sp</item>
       <item name="android:textStyle">normal</item>
       <item name="textAllCaps">false</item>
    </style>

<style name="tabStyle">
    <item name="tabGravity">center</item>
    <item name="tabMode">fixed</item>
    <item name="android:layout_height">80dp</item>
    <item name="android:layoutDirection">ltr</item>
    <item name="tabIndicatorColor">@color/tabIndicator</item>
    <item name="tabIndicatorHeight">2dp</item>
    <item name="tabTextAppearance">@style/TabTextStyle</item>
    <item name="tabTextColor">@color/textColorNormal</item>
</style>

CodePudding user response：

You have to specify the tabBackground from the Layout (XML file) like this

app:tabBackground="@drawable/tab_color_selector" or specify with color @color/....

Here is example look of the drawable selector

Example

<android.support.design.widget.TabLayout
    ....
    app:tabBackground="@drawable/tab_color_selector"
    ...
    />

CodePudding user response：

    <com.google.android.material.tabs.TabLayout
    ...>

    <com.google.android.material.tabs.TabItem
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text_label_1"
        />

    <com.google.android.material.tabs.TabItem
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text_label_2"
        />

    ...
</com.google.android.material.tabs.TabLayout>

Changes to tab selection can be observed like so:

  tabLayout.addOnTabSelectedListener(object : TabLayout.OnTabSelectedListener {

    override fun onTabSelected(tab: TabLayout.Tab?) {
        // Handle tab select
    }

    override fun onTabReselected(tab: TabLayout.Tab?) {
        // Handle tab reselect
    }

    override fun onTabUnselected(tab: TabLayout.Tab?) {
        // Handle tab unselect
    }
})

Implementing tabs theming Using theme attributes and styles in res/values/styles.xml (themes all tabs and affects other components):

    <style name="Theme.App" parent="Theme.MaterialComponents.*">
    ...
    <item name="colorPrimary">@color/shrine_pink_900</item>
    <item name="colorSurface">@color/shrine_pink_light</item>
    <item name="colorOnSurface">@color/shrine_pink_900</item>
    <item name="textAppearanceButton">@style/TextAppearance.App.Button</item>
</style>

<style name="TextAppearance.App.Button" parent="TextAppearance.MaterialComponents.Button">
    <item name="fontFamily">@font/rubik</item>
    <item name="android:fontFamily">@font/rubik</item>
</style>