Develop Reference

How to hide toolbar in android?

I'm really new on android and working on a small project using one of the google templates; the tabbed activity with tabs...is there a way to hide the title section (tabbedExample) and keep only the tabs?
styles.xml
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</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 name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>
Manifiest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="c.example.jinzunza.tabstoolbars">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

You can simply hide the toolbar putting this in your activity, into the oncreate method:
getSupportActionBar().hide();

For Activity:
getSupportActionBar().hide();
For Fragment in Java:
((MainActivity) requireActivity()).getSupportActionBar().hide();
For Fragment in kotlin:
(requireActivity() as MainActivity).supportActionBar!!.hide()

Instead of this:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</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 name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>
Write like this:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>

set this theme in your styles.xml file:
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

You should try this.requestWindowFeature(Window.FEATURE_NO_TITLE); in your onCreate()
Or even simpler, set your theme to: #android:style/Theme.NoTitleBar
The very similar question was answered here
You should find more answers there.

Use this on create method:
getActionBar().hide();

this helped me
supportActionBar?.hide();

I have removed the action bar for a specific activity and it is still showing in the preview

I have removed the action bar for a specific activity and it is working perfectly and the action bar is removed when I run the app on Emulator/Device but the problem is that it is still showing in the preview. Due which It affects my design.
Here is my style file where I set the noAction bar:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<!-- Text Styles -->
<style name="textStyle">
<item name="android:textColor">#color/theme_color</item>
<item name="android:textSize">16sp</item>
</style>
<style name="textStyle.tagline">
<item name="android:textAllCaps">true</item>
<item name="android:textSize">46sp</item>
</style>
<!-- Button Styles -->
<style name="button_transparent">
<item name="android:textAllCaps">true</item>
<item name="android:textColor">#color/theme_color</item>
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
</style>
<style name="button_blue">
<item name="android:textAllCaps">true</item>
<item name="android:textColor">#color/white</item>
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
</style>
</resources>
I have also applied that style on activities as shown here:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.eapple.karumber">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".Splash_Screen" android:theme="#style/AppTheme.NoActionBar"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".protips_activity" android:theme="#style/AppTheme.NoActionBar"></activity>
</application>
</manifest>
But is still showing in the preview as shown here:
Android Studio preview

Fastest solution:
Open your activity's XML.
Switch to the design tab.
On the upper part of the design tab click on AppTheme.
Choose your new theme (the one with no action bar).
However
Adding this line to the activity XML root view should automatically reference to the same activity theme set in AndroidManifest
tools:context=".YourActivityName"

If this is only on the preview u can change the theme with an option on the top of the view. Just select you theme with NoActionBar

colorprimarydark only work for the mainactivity,what should i do with it

this is my manifest
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:supportsRtl="true"
android:label="#string/app_name"
android:theme="#style/AppTheme">
<service android:name="com.amap.api.location.APSService" />
<activity
android:name=".MainActivity"
android:label=""/>
<activity
android:name=".QueryActivity"
android:label="" />
<activity
android:name=".LoginActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".RegistActivity" />
<activity
android:name=".TaskListActivity"
android:label="" />
<activity
android:name=".TaskWatcherActivity"
android:label="" />
<activity
android:name=".DetailsActivity"
android:label="" />
</application>
i have set the style in style:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="windowActionBar">false</item>
<item name="android:windowNoTitle">true</item>
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="drawerArrowStyle">#style/DrawerArrowStyle</item>
<item name="colorAccent">#color/colorAccent</item>
<item name="colorControlNormal">#color/cpb_white</item>
</style>
<style name="DrawerArrowStyle" parent="Widget.AppCompat.DrawerArrowToggle">
<item name="spinBars">true</item>
<item name="color">#android:color/white</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
&style-v21:
<resources>
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="android:fitsSystemWindows">true</item>
<item name="android:windowTranslucentNavigation">true</item>
<item name="android:navigationBarColor">#android:color/transparent</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">#android:color/transparent</item>
<item name="android:textSize">15sp</item>
<item name="android:colorControlNormal">#color/cpb_white</item>
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="drawerArrowStyle">#style/DrawerArrowStyle</item>
</style>
but only the mainactivity's status bar is in colorprimarydark,other activities' statusbar is in the color of their layout's background. so how can i make colorprimarydark work for every activity's status bar

Very easy and useful library for Tint Color use this library in every Activity set you status color.

Try to Use android:theme="#style/AppTheme" in each and every activity.
I think you solve your problem.

finally, i used the library for Tint Color to solve the problem, p.s.thasks to Jhaman Das.
And i found that the attr of statusBarColor would cover the effect of colorpromarydark, it is the drawlayout that can have the ideal effect. willing to get further discussion on this problem.

Android Material Design- ActionBar and Title visible even after setting windowActionBar as false and windowNoTitle as true

I am trying out the material design. I created a theme MyMaterialTheme in the styles.
Styles:
<resources>
<!-- Theme for the material design of the app -->
<style name="MyMaterialTheme" parent="MyMaterialTheme.Base"></style>
<style name="MyMaterialTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="windowNoTitle">true</item>
<item name="windowActionBar">false</item>
<item name="colorPrimary">#color/colorPrimaryApp</item>
<item name="colorPrimaryDark">#color/colorPrimaryDarkApp</item>
<item name="colorAccent">#color/colorAccentApp</item>
</style>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</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 name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>
In my AndroidManifest.xml, I included this theme (MyMaterialTheme). I can confirm that my theme is applied as it has taken the correct colors from it. I had assigned windowActionBar as false and windowNoTitle as true, but still I am seeing the ActionBar and the title when I run the app. Could anyone point out where I am going wrong?
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/MyMaterialTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name">
<!-- android:theme="#style/AppTheme.NoActionBar"> -->
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
Here is the screenshot of the emulator:

Check your activity_main.xml file. Android Studio's default layouts will typically have a toolbar manually added to each layout, even if your app theme says there is none.

your base style that your material style extend it should be noTitlebar like this code
parent="Theme.AppCompat.Light.NoActionBar"

support actionbar menu styling

How does one style the Android ActionBar overflow menu (background color, text color, custom drawables etc.)?
I've been trying to do this with the following styles, but nothing seems to be taking any effect. Any help would be greatly appreciated.
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="android:actionBarWidgetTheme">#style/MyActionBar</item>
<item name="android:actionBarStyle">#style/MyActionBar</item>
</style>
<style name="MyActionBar" parent="Widget.AppCompat.Light.ActionBar.Solid.Inverse">
<item name="android:textColor">#android:color/holo_blue_light</item>
<item name="android:actionBarItemBackground">#android:color/holo_green_light</item>
<item name="android:actionMenuTextColor">#android:color/holo_green_dark</item>
</style>
</resources>
TIA!
BTW minSdk set to 14
AndroidManifest is
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.app1.app1">
<application android:allowBackup="true"
android:label="#string/app_name"
android:icon="#drawable/ic_launcher"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Do you call it on AndroidManifest.xml file?
Example in my style.xml
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<!-- the theme applied to the application or activity -->
<style name="CustomActionBarTheme" parent="#android:style/Theme.Holo.Light.DarkActionBar">
<item name="android:actionBarStyle">#style/MyActionBar</item>
</style>
<!-- ActionBar styles -->
<style name="MyActionBar" parent="#android:style/Widget.Holo.Light.ActionBar.Solid.Inverse">
<item name="android:background">#color/green_dark</item>
<item name="android:titleTextStyle">#style/MyTheme.ActionBar.TitleTextStyle</item>
</style>
<style name="MyTheme.ActionBar.TitleTextStyle" parent="#android:style/TextAppearance">
<item name="android:textColor">#color/white</item>
<item name="android:textStyle">bold</item>
</style>
and in menifestfile
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher1"
android:label="#string/app_name"
android:theme="#style/CustomActionBarTheme" >
<activity.....
For implement click listener, you need create option menu for this case.