由于操作栏活动而导致的错误

Question

Hey guys when i add any action to action bar in android studio it just says add app combat..... When i added that it says to to change android to app and i changed that but when i run my application there is no action bar here is my xml and java code. xml

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

    >
    <item
        android:title="search"
        android:icon="@drawable/ic_action_search"
        android:id="@+id/search_icon"
        android:text="search1"
        android:showAsAction="always"
    />

java

public boolean onCreateOptionsMenu(android.view.Menu menu) {
        MenuInflater i= getMenuInflater();
        i.inflate(R.menu.search_bar,menu);
        return super.onCreateOptionsMenu(menu);
    }

app is running successfully but with no action bar

when i remove that function oncreateOptionMenu it still does not shows any action bar but it shows on my first activity actually this is menu of app here is code

public class Menu extends Activity {

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        setContentView(R.layout.menu);
    }

    //@Override
    /*public boolean onCreateOptionsMenu(android.view.Menu menu) {
        MenuInflater i= getMenuInflater();
        i.inflate(R.menu.search_bar,menu);
        return super.onCreateOptionsMenu(menu);
    }*/
}

and here is manifest

<application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/Base.Theme.AppCompat" >
        <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=".Menu"
            android:label="@string/app_name"
            android:theme="@style/Base.Theme.AppCompat.Light">
            <intent-filter>
                <action android:name=".Menu" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Answer 1

Post the exact message to allow a more specific response.

showAsAction should use your app namespace, ie:

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

You should also make sure you're using an AppCompat theme in your app style.

Answer 2

The appcompat themes remove the native ActionBar and use the support ActionBar.

You need to change

extends Activity

To

extends ActionBarActivity

You also need to change Base.Theme.AppCompat.Light to Theme.AppCompat.Light in your AndroidManifest.

Please see this blog post for more information: http://android-developers.blogspot.com/2014/10/appcompat-v21-material-design-for-pre.html