Aim: Create a application for showing Menus
Activity_Main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:id="@+id/mn"
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" />
</RelativeLayout>
MainActivity.java
package com.example.myapplication;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import
android.os.Bundle; import
android.view.Menu;
import android.view.MenuInflate; import android.view.MenuItem; import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
TextView mn; @Override
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mn=findViewById(R.id.mn);
}
public boolean onCreateOptionsMenu(Menu menu) { MenuInflater m=getMenuInflater(); m.inflate(R.menu.menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem
item) { switch (item.getItemId()) {
case R.id.fyit: mn.setText("FYIT"); return
true;
case R.id.syit: mn.setText("SYIT"); return
true;
case R.id.tyit: mn.setText("TYIT"); return
true;
}
return super.onOptionsItemSelected(item);
}
}
Menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/fyit"
android:title="FYIT" />
<item
android:id="@+id/syit"
android:title="SYIT" />
<item
android:id="@+id/tyit" android:title="TYIT" />
</menu>
Output
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