Develop Reference

Activity with no Title/Action bar

First off, I'm not completely sure that Title Bar and Action Bar are the same? 2 different things?
I have an existing application that I need to maintain. In I have an activity that had a custom view as a title. What I want is to have the default title bar for the activity - the native one. I removed the custom view, and in the activity class I removed requestWindowFeature(Window.FEATURE_NO_TITLE); but the activity still doesn't show the Title bar. I've set the activity theme to android:theme="#style/Theme.AppCompat.Light". Still no Title Bar.
The activity intent is started with launchActivityForResult - don't know if that has anything to do with that.
What am I missing here? Is there a way to show it programmatically?

title-bar and action-bar is different thing.
use theme like this.
Theme.AppCompat.Light
instead of
Theme.AppCompat.Light.DarkActionBar
<style name="MyMaterialTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
</style>
and add this theme to manifest
<application
android:name="com.qwesys.ecommerce.application.AppController"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:largeHeap="true"
android:supportsRtl="true"
android:theme="#style/MyMaterialTheme">

First off, I'm not completely sure that Title Bar and Action Bar are the same? 2 different things?
Yes these are 2 different things implementation wise. Action Bar is now deprecated and we use something called the toolbar.
https://developer.android.com/reference/android/widget/Toolbar.html
You can make customized toolbar https://developer.android.com/training/appbar/setting-up.html
And for your second part use startActivityForResult() and like suggested by #sagar above you use the theme to to make the toolbar appear.

How to hide app name from title bar in Android?

My app is showing name and icon. I want to hide name.
How i can do that?

You have to call `
getSupportActionBar().setDisplayShowTitleEnabled(false) - to hide it,
or
getSupportActionBar().setTitle("new title"); - if you want to change it

Kinda "workaround", but it's working fine:
In the Manifest
<activity
android:name=".YourActivity"
android:label="" />

You can use getSupportActionBar.
if you want to hide just your app name use this code in Activity of that page :
getSupportActionBar().setDisplayShowHomeEnabled(false);
And if you want to hide ActionBar use this
getSupportActionBar().hide();
And you can ReName your app with :
getSupportActionBar().setTitle("that name you want");
Totaly you can use:
getSupportActionBar().
and others code ...

If you want to do this outside of the code, put this in your manifest:
<activity android:name=".ActivityName"
android:theme="#android:style/Theme.NoTitleBar">
edit: ranjith beat me to it.

It works for me
Go to Style.xml change it from
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
to
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">

In Kotlin you can use:
supportActionBar?.setDisplayShowTitleEnabled(false)
The "?" is important because you can have the whole title bar disabled already because you try to set a a not existing title bar's title status to false.

just replace parent property for appTheme style in styles.xml to '#android:style/Theme.NoTitleBar'

Show both logo and app name in action bar android

i have set these two lines of code to display both logo and app name in action bar, but only app name appears, like in the screenshot:
actionBar.setDisplayUseLogoEnabled(true);
actionBar.setLogo(R.drawable.icon);
Do i need other code to show both? I have added this in manifest but same result:
<application
android:allowBackup="true"
android:icon="#drawable/icon"
android:logo="#drawable/icon"
I'm working on a Tabbed activity with action bar.
Can you help me? Thank you

Solved adding
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setLogo(R.drawable.icona);
getSupportActionBar().setDisplayUseLogoEnabled(true);
Using logo in actionbar is disabled by default in Android 5.0 Lollipop.

Add these 3 lines in the onCreate(Bundle) method of your Activity class:
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setLogo(R.mipmap.ic_launcher4);
getSupportActionBar().setDisplayUseLogoEnabled(true);

Try this one in your style.xml:
<!-- ActionBar styles -->
<style name="MyActionBar"
parent="#style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
<item name="android:icon">#drawable/logo</item>
<item name="logo">#drawable/logo</item>
<item name="displayOptions">useLogo|showHome|showTitle</item>
</style>
Don't know whether this makes problems with high api levels but worked for me on API 10.

Did you run you app in emulator or real device? I think on the Design page in the fragment does not show the icon of the app when using the layout of API L or 21.(as show below)
But when you change to API 19 or inflate the fragment into tap, it shows.(as show below)

LeftNavBar creates black bar at the top of the activity

I'm trying to incorporate Google's LeftNavBarLibrary into my application. When I load the nav bar I end up with a black bar across the top of the activity. The bar appears to be taking up the space a traditional actionbar would occupy.
Does anyone know where the bar is coming from or how to remove it.
Thanks.
My application theme is slightly customized. Based on the AppCompat theme due to requirements of the MediaRouteActionProvider
styles.xml
<resources>
<style name="AppTheme" parent="#style/Theme.AppCompat">
<item name="android:actionBarStyle">#style/MyActionBar</item>
</style>
<style name="MyActionBar" parent="#style/Widget.AppCompat.ActionBar">
<item name="android:background">#drawable/ab_gradient</item>
</style>
</resources>
The activity pictured above has a custom theme defined in the manifest.
AndroidManifest.xml
<activity
android:name="my.app.namespace.CoreActivity"
android:theme="#android:style/Theme.Holo.NoActionBar.Fullscreen" >
</activity>
The applications minimum sdk version is 14. So it's not exclusively a Google TV app. I've only been able to test this bug on my Android 4.1 and 4.4 devices.

I deal with the action bar this way:
getActionBar().hide();
Try to put this in your main activity or the activity that is the parent and always present.
Don't bother about the theme in manifest, just set your theme with title bar and hide it through the code.
Hope this helps.

Take a look at: Hide the Status Bar on Android 4.0 and Lower
Notice that this is in the <application> tag. That might help you.
<application
...
android:theme="#android:style/Theme.Holo.NoActionBar.Fullscreen" >
...
</application>
or programmatically:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// If the Android version is lower than Jellybean, use this call to hide
// the status bar.
if (Build.VERSION.SDK_INT < 16) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
setContentView(R.layout.activity_main);
}

You can set android:windowActionBar style to false by setting custom theme.
Note: In this case getActionBar() will return null. If you remove the action bar using a theme, then the window will not allow the action bar at all.

Thanks for the answers guys. The real issue was actually that the LeftNavBar.java class was creating an artificial margin at the top of the screen. I'd have thought that a google published library would be better than that, but apparently not.

Hiding Dialog's titlebar in Android Manifest

Basically, I created an Activity inside a dialog, everthing is seems working perfectly but the problem is the title bar of a dialog is still there. Is there anyway to hide it?
And also this is the tutorial, here is the link. It is exactly what I am trying to accomplish except witout title bar.
Note: THIS IS NOT JUST AN ALERTDIALOG OR DIALOG, THIS IS AN ACTIVITY INSIDE A DIALOG which only became looks like a dialog by pasting the code below.
<activity android:label="My Dialog (activity)" android:name=".MyActivity" android:theme="#android:style/Theme.Dialog"></activity>

If ur using appcompat support v4, v7 libraries then try using
supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
before setContentView and also before super.Oncreate();

You can remove the title bar programatically.
Add this line to your Activity onCreate() method.
requestWindowFeature(Window.FEATURE_NO_TITLE);
Edit:
Create a custom style that extend Theme.Dialog:
<resources>
<style name="NoTitleDialog" parent="android:Theme.Dialog">
<item name="android:windowNoTitle">true</item>
</style>`
</resources>
Then reference this theme in your activity android:theme attribute. :)

I came up with such, easiest solution:
In Manifest
android:theme="#android:style/Theme.Holo.Light.Dialog.NoActionBar">
Seems to work.

Try this :
style.xml
<style name="NoTitleActivityDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="windowNoTitle">true</item>
</style>
AndroidManifest.xml
<activity
android:name=".DialogActivity"
android:theme="#style/NoTitleActivityDialog"/>