Cannot create AlertDialog: AppCompat error

Question

I am trying to create an AlertDialog like this:

counterButton.setOnLongClickListener(new View.OnLongClickListener() {
    @Override
    public boolean onLong         


        

Answer 1

Since your theme is related to your Activity, you must pass it as the context to AlertDialog.Builder - getApplicationContext() has no theme attached to it which is why you are getting an error.

Answer 2

as error said

You need to use a Theme.AppCompat theme

then you will create style extend AppTheme

!-- Base application theme. -->
<style name="AppTheme" parent="AppTheme.Base"/>

<style name="AppTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->



<activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:theme="@style/AppTheme"
        >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>