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Make Actionbar transparent in Navigation Drawer Activity

I am using android studio 3.0 and want to make actionbar transparent with activity's background.I just read all the questions about it but that doesen't work for me.help me guys.
minSdkVersion 20
targetSdkVersion 26
here is my style.xml code
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="android:background">#android:color/transparent</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
</style>
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" >
</style>
Like This

Try this theme to make your Actionbar transparent
<style name="AppTheme.ActionBar.Transparent2" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="windowActionBarOverlay">true</item>
<item name="android:windowContentOverlay">#null</item>
<item name="colorPrimary">#android:color/transparent</item>
<item name="colorPrimaryDark">#android:color/transparent</item>
<item name="colorAccent">#android:color/transparent</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="android:homeAsUpIndicator">#mipmap/ic_left_back</item>
</style>

How do I change the color of the timepicker in my Android app?

As you can see from the image below, I'm using the time picker in my app.
I need to change the color but don't know how...
Thanks for the help.

This can be easily achieved from xml (5.0+ only)
v21/themes.xml
<style name="Theme"
parent="MyTheme.Base">
<item name="android:dialogTheme">#style/Theme.Dialog</item> <!-- TimePicker dialog -->
<item name="android:alertDialogTheme">#style/Theme.Dialog</item> <!-- Alert dialog -->
</style>
<style name="Theme.Dialog"
parent="android:Theme.Material.Light.Dialog">
<item name="android:colorAccent">#color/...</item>
<item name="android:colorPrimary">#color/...</item>
<item name="android:colorPrimaryDark">#color/...</item>
</style>
Edit
Please note that as of Android Support Library 22.1.0 there is a new AppCompatDialog available! http://android-developers.blogspot.de/2015/04/android-support-library-221.html

Try this code
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="TimePicker" parent="Theme.AppCompat.Light.Dialog">
<item name="android:windowIsFloating">true</item>
<item name="colorAccent">#color/primary</item>
<item name="colorControlActivated">#color/secondary</item>
<item name="android:colorPrimary">#color/primary</item>
<item name="android:colorPrimaryDark">#color/primary</item>
<item name="android:buttonBarNegativeButtonStyle">#style/DatePickerTheme.ButtonBarButtonStyle</item>
<item name="android:buttonBarPositiveButtonStyle">#style/DatePickerTheme.ButtonBarButtonStyle</item>
</style>
<style name="DatePickerTheme.ButtonBarButtonStyle" parent="Widget.MaterialComponents.Button.TextButton.Dialog">
<item name="android:textColor">#color/primary</item>
</style>
</resources>
The first one is colorAccent, the second is colorControlActivated and the last one does not belong to the timepicker, it belongs to dialog so you should apply the an style similar to this post

Set a custom for actiobar using Android Studios

I've tride to set another color for my actiobar quite a while now.
I've search on google and tried multiple solutions. but non of them have worked out for me.
The code i got now is:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="AppTheme"
parent="#android:style/Theme.Holo.Light.DarkActionBar">
<item name="android:actionBarStyle">#style/MyActionBar</item>
</style>
<style name="MyActionBar"
parent="#android:style/Widget.Holo.Light.ActionBar.Solid.Inverse">
<item name="android:background">#cac09f</item>
</style>
</resources>
This causes my app to crash and displays this:
Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
I then tried to set the theme to "Theme.Appcompat" but this wont change the color of the actionbar.
Does anyone know a solution for this?
I run this on a phone running android 4.4.4.
My project is for API 16 and higher (4.1)

You're using an activity from the support package (AppCompatActivity), it can only use compatibility themes (Theme.AppCompat).
The reason why setting a custom action bar background didn't work, is because you also need to use compatibility attributes:
<style name="AppTheme" parent="Theme.AppCompat">
<item name="android:actionBarStyle">#style/MyActionBar</item>
<item name="actionBarStyle">#style/MyActionBar</item>
</style>
<style name="MyActionBar" parent="#style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
<item name="android:background">#color/my_red</item>
<item name="background">#color/my_red</item>
</style>
<color name="my_red">#cac09f</color>

guy I think that would be better you to use a toobar, because it is easier of work.
use this code in your xml:
<android.support.v7.widget.Toolbar
android:id="#+id/tbMain"
android:layout_width="match_parent"
app:theme="#style/style_toobar"
android:layout_height="?attr/actionBarSize"
/>
in the style.xml use this:
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorPrimary</item>
</style>
<style name="style_toobar" parent="Theme.AppCompat">
<item name="popupTheme">#style/Theme.AppCompat.Light</item>
<item name="colorControlNormal">#color/colorAccent</item>
</style>
in the activity use:
Toobar tbMain = (Toobar)findViewById(R.id.tbMain);
setSupportActionBar(tbMain);

Android: ActionBar will not change its style?

I'm following the Android Documentation and have correctly copied this code:
<resources>
<style name="CustomTheme"
parent="Base.Theme.AppCompat.Light">
<item name="android:actionBarStyle">#style/MyActionBar</item>
<item name="android:actionMenuTextColor">#color/actionbar_text</item>
</style>
<style name="MyActionBar"
parent="#android:style/Widget.Holo.ActionBar">
<item name="android:background">#color/background</item>
<item name="android:titleTextStyle">#style/MyActionBarTitleText</item>
</style>
<style name="MyActionBarTitleText"
parent="#android:style/TextAppearance.Holo.Widget.ActionBar.Title">
<item name="android:textColor">#color/actionbar_text</item>
</style>
</resources>
I've set the activities manifest to "CustomTheme" and have the right information in strings.xml so I don't see what the problem would be. Any help would be appreciated. Thanks.

Try removing the android: tag and also, you have to set the Parent ActionBar to AppCompat's ActionBar.
<style name="CustomTheme"
parent="Base.Theme.AppCompat.Light">
<item name="actionBarStyle">#style/MyActionBar</item>
<item name="actionMenuTextColor">#color/actionbar_text</item>
</style>
<style name="MyActionBar"
parent="Base.Widget.AppCompat.ActionBar">
<item name="background">#color/background</item>
<item name="titleTextStyle">#style/MyActionBarTitleText</item>
</style>
<style name="MyActionBarTitleText"
parent="TextAppearance.AppCompat.Widget.ActionBar.Title">
<item name="android:textColor">#color/actionbar_text</item>
</style>

Android AppCompat ToolBar color can't be changed to white

I attempted the following:
<style name="myAppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">#color/primaryColor</item>
<item name="colorPrimaryDark">#color/primaryColorDark</item>
<item name="android:windowNoTitle">true</item>
<item name="windowActionBar">false</item>
<item name="drawerArrowStyle">#style/DrawerArrowStyle</item>
<item name="actionBarStyle">#style/MyActionBar</item>
</style>
<style name="DrawerArrowStyle" parent="Widget.AppCompat.DrawerArrowToggle">
<item name="spinBars">true</item>
<item name="color">#android:color/white</item>
</style>
<style name="MyActionBar" parent="#style/Widget.AppCompat.ActionBar.Solid">
<item name="titleTextStyle">#style/MyTitleTextStyle</item>
</style>
<style name="MyTitleTextStyle" parent="#style/TextAppearance.AppCompat.Widget.ActionBar.Title">
<item name="android:textColor">#color/actionbar_text_color</item>
</style>
To change my toolbar text color to white, but it's still black!
What do I need to change?

Are you sure that you are using Toolbar? If yes, then your myAppTheme should extend from Theme.AppCompat.NoActionBar ... Toolbar is a replacement of ActionBar. Therefore if you want to use it then you must remove ActionBar styles from your xml.
I suggest you read this blog post. And here is a nice implementation on how to change title color.