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Hello devs! In this tutorial, we will be creating a drop-down menu on clicking a button in Android studio. Here is an image of how our menu is going to look: On clicking the hamburger icon, a vertical menu will appear with image icons of your choice. Above image is just to get an idea of what we are going to develop. Let's get started. Step 1: Open the layout file where you want the menu. Add the hamburger icon on an image button. <ImageButton android :layout_width= "50dp" android :layout_height= "50dp" android :src= "@drawable/ham" android :id= "@+id/ham" android :background= "#00000000" />  Note : #00000000 specifies 'transparent' background. Step 2: Add a vertical linear layout for the menu. Inside that, add nested linear layouts for horizontal rows. <LinearLayout android :layout_width= "wrap_content" android :layout_height= "wrap_content&quo

Hello devs! This post is going to tell you a way to open the last opened activity in Android. There are cases where we keep a login for the app and we need to use that login every time we open the app. However, you see in good apps, you don't need to login each time unless you logout. Following are the ways to achieve this: 1. Firebase Auth - this is the simplest way. However, if you don't want to use Firebase or have your own API, check out the next method. 2. SharedPreferences - Following is the way to make use of that: 1. In every activity you wish to open, add the following code. @Override protected void onPause() { super.onPause(); SharedPreferences prefs = getSharedPreferences("X", MODE_PRIVATE ); SharedPreferences.Editor editor = prefs.edit(); editor.putString( "lastActivity" , getClass().getName()); editor.commit(); } This could be your MainActivity and your LoginActivity. 2. Next, create a class called a