# How to Generate a Random Boolean with Probability in Flutter

In **Flutter**, there are times when you may need to generate a random boolean value, but with a certain probability of it being `true`

. By default, the `Random`

class provides an equal chance of generating `true`

or `false`

. However, what if you want to control the occurrence of `true`

with a specific probability, such as **90%**? In this tutorial, we will explore how to generate a random boolean with a specific probability in **Flutter**.

## Generate a random Boolean

In order to generate a random boolean in **Flutter **we can use the `Random`

class of the `dart:math`

library.

```
import 'dart:math';
void main() {
Random random = Random();
bool randomBoolean = random.nextBool();
print(randomBoolean);
}
```

In this code snippet, we create a random boolean by creating an instance of the `Random`

class. On this instance, we call the `nextBool`

function to generate a random boolean.

## Generate a Random Boolean with a Specific Probability

If we want to generate a random boolean with a specific probability let us say **90%**, we can use the `nextDouble`

function of the `Random`

class.

```
import 'dart:math';
void main() {
Random random = Random();
bool randomBoolean = random.nextDouble() <= 0.9;
print(randomBoolean);
}
```

In this code snippet, we again create an instance of the `Random`

class. On this instance, we call the `nextDouble`

function. This function generates a random value between `0`

and `1`

. Every time the generated `double`

is smaller or equal to `0.9`

we return `true`

. Otherwise, we return `false`

.

## Conclusion

Generating a random boolean value with a specific probability can be helpful in different situations while developing a **Flutter **application. You can achieve this by using the `Random`

class from the `dart:math`

library and creating a function that compares the generated random value with your desired probability. This allows you to generate random booleans based on your specific requirements.