Option Menu
MainActivity -
package com.example.optionmenu;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Switch;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.new1:
Toast.makeText(getApplicationContext(), "New Option Selected", Toast.LENGTH_LONG).show();
break;
case R.id.open1:
Toast.makeText(getApplicationContext(), "Open Option Selected", Toast.LENGTH_LONG).show();
break;
case R.id.save1:
Toast.makeText(getApplicationContext(), "Save Option Selected", Toast.LENGTH_LONG).show();
break;
case R.id.exit1:
Toast.makeText(getApplicationContext(), "Exit Option Selected", Toast.LENGTH_LONG).show();
break;
}
return super.onOptionsItemSelected(item);
}
}
-----------------------------------------------------------------------------------------------------------------------------
Menu Folder
-main_menu
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:title="New"
android:id="@+id/new1"
/>
<item
android:title="Open"
android:id="@+id/open1"
/>
<item
android:title="Save"
android:id="@+id/save1"
/>
<item
android:title="Exit"
android:id="@+id/exit1"
/>
</menu>
-------------------------------------------------------------------------------------------------------------------------
activity_main -
<?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">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
-----------------------------------------------------------------------------------------------------------------------------
AndroidManifest -
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.optionmenu">
<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">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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