How to change programmatically the primary color in Android L?

问题

Is there a way to change programmatically the primary colors. I would like to do it in code depending the screen/state of the app.

Currently I can only set the colors in the theme (static) :

    <item name="android:colorPrimary">@color/primary_color</item>
    <item name="android:colorPrimaryDark">@color/dark_color</item>
    <item name="android:colorBackground">@android:color/white</item>
    <item name="android:colorAccent">@color/primary_color</item>
    <item name="android:colorControlHighlight">@color/primary_color</item>

Thanks

回答1:

You can, of course, implement custom subclasses of View that have methods for setting colors.

You can also define multiple themes with you various color schemes.

Views look up theme information from the context when they are created. So to change the styles applied from a theme you will have to recreate your view hierarchy with a context that uses the right theme.

One way to do that, is to create a new ContextThemeWrapper and then get a LayoutInflator that uses that theme wrapper, remove the old version of your layout and re-inflate your layout.

Roughly:

ContextThemeWrapper themeWrapper = new ContextThemeWrapper(this, R.style.AppThemeWithColorScheme2);
LayoutInflater layoutInflater = LayoutInflater.from(themeWrapper);
viewContainer.removeAllViews();
layoutInflater.inflate(R.layout.my_layout, viewContainer, true );

If you are using Action Bar, that may be a bit more tricky, because the Action Bar is created once per activity.

回答2:

USe this code for setting toolbarcolor and status bar (darker toolbar color)

toolbar.setBackgroundColor(toolbarColor);
factor=0.8f; 
int a = Color.alpha(toolbarcolor);
int r = Math.round(Color.red(toolbarcolor) * factor);
int g = Math.round(Color.green(toolbarcolor) * factor);
int b = Math.round(Color.blue(toolbarcolor) * factor);
int statusColor=Color.argb(a,
        Math.min(r, 255),
        Math.min(g, 255),
        Math.min(b, 255));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    Window window = MainActivity.this.getWindow();
    window.setStatusBarColor(statusColor);
}

回答3:

This is most practical with no error, there is no need to do any extra coding, just go to android tree project

res > values > colors then edit these codes:

 <resources>
    <color name="colorPrimary">#008577</color>
    <color name="colorPrimaryDark">#00574B</color>
    <color name="colorAccent">#D81B60</color>
</resources>

add these under style:

<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>

add into manifest just after ".MainActivity" :

android:theme="@style/AppTheme.NoActionBar">

回答4:

This change everything in text

<item name="android:textColorPrimary">@color/textGrey</item>
    <item name="android:textColorSecondary">@color/textGrey</item>
    <item name="android:textColorTertiary">@color/textGrey</item>
    <item name="android:listDivider">@color/textGrey</item>

来源：https://stackoverflow.com/questions/25354558/how-to-change-programmatically-the-primary-color-in-android-l

标签

android

android-5.0-lollipop

material