Style SnackBar in theme app

问题

I need help. How can I change the design of the text in snackbar in styles app? The change in the code does not interest me. I found the following code. But it is not working for me. Why is that? My theme is derived from @style/Theme.AppCompat.Light.DarkActionBar". I would be very grateful for the help.

<style name="TextAppearance.Design.Snackbar.Message" parent="android:TextAppearance">
        <item name="android:textSize">10sp</item>
        <item name="android:textColor">#FEFEFE</item>
    </style>
    <style name="TextAppearance.Design.Snackbar.Action" parent="android:TextAppearance">
        <item name="android:textSize">16sp</item>
        <item name="android:textColor">#FEFEFE</item>
    </style>

回答1:

you need this: tools:override="true"

<resources xmlns:tools="http://schemas.android.com/tools">
    <style name="TextAppearance.Design.Snackbar.Message" parent="android:TextAppearance" tools:override="true">
        <item name="android:textColor">@color/text</item>
        <item name="android:textSize">50sp</item>
    </style>
</resources>

回答2:

2018 new way :

https://materialdoc.com/components/snackbars-and-toasts/#with-code

// create instance

Snackbar snackbar = Snackbar.make(view, text, duration);

// set action button color

snackbar.setActionTextColor(getResources().getColor(R.color.indigo));

// get snackbar view

View snackbarView = snackbar.getView();

// change snackbar text color

int snackbarTextId = android.support.design.R.id.snackbar_text;
TextView textView = (TextView)snackbarView.findViewById(snackbarTextId);
textView.setTextColor(getResources().getColor(R.color.indigo));

// change snackbar background

snackbarView.setBackgroundColor(Color.MAGENTA);

回答3:

With the Material Components Library you can globally change the snackbar style in your app theme:

<style name="AppTheme" parent="Theme.MaterialComponents.*">
     <!-- Style to use for Snackbars in this theme. -->
    <item name="snackbarStyle">@style/Widget.MaterialComponents.Snackbar</item>
    <!-- Style to use for action button within a Snackbar in this theme. -->
    <item name="snackbarButtonStyle">@style/Widget.MaterialComponents.Button.TextButton.Snackbar</item>
    <!-- Style to use for message text within a Snackbar in this theme. -->
    <item name="snackbarTextViewStyle">@style/Widget.MaterialComponents.Snackbar.TextView</item>
    ....
</style>

Note: snackbarStyle and snackbarButtonStyle require the version 1.1.0, snackbarTextViewStyle requires the version 1.2.0.

For example:

  <style name="snackbar_style" parent="@style/Widget.MaterialComponents.Snackbar">
    <item name="android:layout_margin">32dp</item>
  </style>

  <style name="snackbar_button" parent="@style/Widget.MaterialComponents.Button">
      <item name="backgroundTint">@color/secondaryLightColor</item>
      <item name="android:textColor">@color/primaryDarkColor</item>
  </style>

  <style name="snackbar_text" parent="@style/Widget.MaterialComponents.Snackbar.TextView">
    <item name="android:textColor">@color/secondaryLightColor</item>
  </style>