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Sometimes it is required to implement checkbox with 3 states Unchecked Checked Indeterminate So here is a simple example of how to implement Tri-States or you can say Indeterminate Checkbox Android First of all, make a custom class which is extend Checkbox import android.content.Context import android.util.AttributeSet import androidx.appcompat.widget.AppCompatCheckBox import com.android.tristatescheckbox.R class TriStatesCheckBox : AppCompatCheckBox { private var state = 0 constructor ( context: Context ?) : super ( context ) { init () } constructor ( context: Context ?, attrs: AttributeSet ?) : super ( context , attrs ) { init () } constructor ( context: Context ?, attrs: AttributeSet ?, defStyleAttr: Int ) : super ( context , attrs , defStyleAttr ) { init () } private fun init () { state = UNCHECKED...

As we know Shared Preference is used to store primitive data like string, int, double, boolean and list of string. Shared Preferences data are stored within the app so all the data will be cleared if the user uninstalls an application or clear the storage data from Application info. To use shared preference in Flutter you have to get the plugin named "shared_preferences: which was published by "flutter.dev" you can check more detail here Shared Preference in Flutter To get this, you have to write shared_preferences: version to pubspec.yaml like below mentioned.    dependencies :   flutter:     sdk: flutter   shared_preferences: ^0.4.3   You can change the version number to the latest. Now you need to import the package in the file you want to use shared preference import 'package:shared_preferences/shared_preferences.dart'; Reading and writing data to shared preference First, you need to get the object of Shared Preference lik...

What is Flutter? First of all, I just want to let you know that Flutter is not a language it is an SDK for creating a User Interface for many operating systems like Android, iOS, Linux, Mac, Windows, Web and one of the best Future OS Fuchsia by Google DART is an official language for Flutter which is developed by Google in 2K11 Everything in a Flutter is a widget, even application itself is a widget How to install Flutter in your system? If you have already installed an Android Studio in your system then you just have to install 2 plugins in Android Studio Dart and Flutter these are two plugins useful to develop a Flutter Project Install the following plugins After that, you just have to restart an Android Studio You will get a new option while creating a new project that is New Flutter Project In the next step, you have to Install an SDK for the First at and the next time you just have to give the path of that SDK Next, you just have to describe the ...

Sometimes you need to set the transparency in your some of the views. But sometimes you cannot decide how much transparency you need to apply on the view. So here is the Table with the transparency percentage level  so you can give proper transparency to your view and make it whatever you want. Before that, I'll tell you how to add transparency color in hex code Generally, we used 6 characters code for any color which is known as Hex code. But when you want to apply a transparency to your color then you have to add 2 more characters at the beginning of the hex code which is known as Alpha color You need to add 2 characters from below table according to your transparency level For example for the RED color, Hex code is #FF0000 If you want 50% of transparency in Red color than you have to add 80 at the beginning and your code is #80FF0000 Please refer following table to manage transparency level. 100% — FF 95% — F2 ...

We are already facing the same issue while using the Android Virtual Device I mean Android Emulator. Now here is the solution to boost up the Android emulator speed. Generally Android emulator processing speed depends on the system's configuration but still, there are some setting by which we can boost up the Android emulator speed or processing power. Android Development Tools  or you can say that ADT version 9.0.0 or later has some functionality by which you can save the last state of an emulator and on the next boot you will get an open up screen with the last state that will decrease your startup timing. Follow the following screenshot to enable this awesome feature and boost up your android emulator speed. First of all, you have to create a new android virtual device or you can say android emulator You have to select or check Quick Boot Option as given in below screenshot. After that, you have to enable the snapshot feature that will help you to speed up yo...