Android Action Bar Not Showing Overflow

action bar buttons not showing

i found the solution to my problem.
since i have been trying to use namespace

xmlns:app="http://schemas.android.com/apk/res-auto"

then i should use

app:showAsAction="ifRoom"

instead of

android:showAsAction="ifRoom"

Action bar does not show

Remove your theme for your actionbar activity
in androidManifest file. Now it will work...

<application
    android:allowBackup="true"
    android:icon="@drawable/tasktodo"
    android:label="@string/app_name"
    >

Don't add any theme in your application manifest file. If you added one, please remove and try running it...

Overflow menu is not showing in Actionbar

You can also use this little hack here:

try {
    ViewConfiguration config = ViewConfiguration.get(this);
    Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
    if(menuKeyField != null) {
        menuKeyField.setAccessible(true);
        menuKeyField.setBoolean(config, false);
    }
} catch (Exception ex) {
    // Ignore
}

Good place to put it would be the onCreate-Method of your Application class.

It will force the App to show the overflow menu. The menu button will still work, but it will open the menu in the top right corner.
As of Android 4.4, the ... affordance in the action bar will be there, regardless of whether the device has a physical MENU button or not. Google's current Compatibility Definition Document now comes out a bit more forcefully against having a dedicated MENU button.

Overflow menu's 3 dots are not showing up in ActionBar

You should need something like this.

A menu.xml layout for the items under the res/menu directory.

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/action_settings"
        android:title="@string/action_settings"
        app:showAsAction="never" />
    ...
</menu>

Then in your Activity you must include this methods.

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu, menu);

    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.action_settings:
            // Do something

            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

Android studio action bar not showing in new activity

try above in style.xml

<resources>

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

and update your AndroidManifest file like above

  <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.karanvir.search">
<uses-permission android:name="android.permission.INTERNET"/>

<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"
     >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".Main2Activity"
        android:label="@string/title_activity_main2"
       />
    <activity
        android:name=".Yahoo"
        android:label="@string/title_activity_yahoo"
       ></activity>
</application>

Action Button not showing in Action Bar

Change your code with the following and try again;

 <menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:yourapp="http://schemas.android.com/apk/res-auto" >
    <item android:id="@+id/action_search"
        android:icon="@drawable/ic_action_search"
        android:title="@string/action_search"
        yourapp:showAsAction="always"  />
</menu>

Also make sure that you have the following part;

@Override
  public boolean onCreateOptionsMenu( Menu menu )
  {
    getMenuInflater().inflate( R.menu.main, menu );
    return true;
  }