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I created a simple application, it is something very trivial. What is happening is that I am trying to create a menu with icons on Action Bar, but what is actually happening is that my application only shows a simple menu without showing the icons. I’ve researched several places, tried to track several videos on YOUTUBE. When I realized that the same way I was being taught on the Internet and in the official Android documentation was the same way I was doing on my project I imagined it was a bug problem on my virtual device, that is, I thought the problem was in my Android emulator from my local computer, so I decided to enable the developer mode of my smartphones, and running generated the same problem. So I conclude that the problem was code even, the problem is in my project, now just I just try to identify where the problem is and fix.
This image below is the Preview of my development IDE, that’s how I expected my application to behave.
When I run my application it behaves totally differently. See and follow in the image below.
As my project is small I will put the code of my entire project here, and I would like you to help me identify where this possible problem is and please help me to fix it.
This is my Activity.
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.Toolbar;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setActionBar(toolbar);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.action, menu);
return super.onCreateOptionsMenu(menu);
}
}
This is my main XML file.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:background="?android:attr/colorPrimary"
android:elevation="4dp"
android:theme="@android:style/ThemeOverlay.Material.ActionBar"
android:popupTheme="@android:style/ThemeOverlay.Material.Light"
tools:ignore="MissingConstraints" />
</androidx.constraintlayout.widget.ConstraintLayout>
This is my menu.
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/action_download"
android:icon="@drawable/ic_file_download_black_24dp"
android:title="Download"
app:showAsAction="always" />
<item
android:id="@+id/action_open"
android:icon="@drawable/ic_folder_black_24dp"
android:title="Abrir"
app:showAsAction="always" />
<item
android:id="@+id/action_add"
android:icon="@drawable/ic_add_circle_black_24dp"
android:title="Adicionar"
app:showAsAction="always" />
</menu>
This is the main configuration that makes everything work properly, at least it was to work properly.
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="android:Theme.Material.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>
</resources>
