How can I generate a random number in a certain range

Question

How can I create an app that generates a random number in Android using Eclipse and then show the result in a TextView field  The random number has to be in a range selected by the user  So  the user will input the max and min of the range  and then I will output the answer

User · Answer

Random Number Generator in Android If you want to know about random number generator in android then you should read this article till end  Here you can get all information about random number generator in android  Random Number Generator in Android  You should use this code in your java file   Random r   new Random                        int randomNumber   r nextInt 100                       tv setText String valueOf randomNumber      I hope this answer may helpful for you  If you want to read more about this article then you should read this article  Random Number Generator

User · Answer

To extend what Rahul Gupta said  You can use Java function int random   Random nextInt n   This returns a random int in the range  0  n-1   I e   to get the range  20  80  use  final int random   new Random   nextInt 61    20      0  60    20   gt   20  80   To generalize more  final int min   20  final int max   80  final int random   new Random   nextInt  max - min    1    min

User · Answer

So you would want the following   int random  int max  int min       somewhere in your code put the method to get the min and max from the user when they click submit and then use them in the following line of code   random   Random nextInt max-min 1  min    This will set random to a random number between the user selected min and max  Then you will do   TextView setText random toString

User · Answer

Below code will help you to generate random numbers between two numbers in the given range   private void generateRandomNumbers int min  int max           min  amp  max will be changed as per your requirement  In my case  I ve taken min   2  amp  max   32      int randomNumberCount   10       int dif   max - min      if  dif  lt   randomNumberCount   3             dif    randomNumberCount   3              int margin    int  Math ceil  float  dif   randomNumberCount       List lt Integer gt  randomNumberList   new ArrayList lt  gt          Random random   new Random         for  int i   0  i  lt  randomNumberCount  i              int range    margin   i    min     2  5  8          int randomNum   random nextInt margin           if  randomNum    0                randomNum   1                     int number    randomNum   range           randomNumberList add number             Collections sort randomNumberList       Log i  generateRandomNumbers    RandomNumberList      randomNumberList

User · Answer

You can use If Random  For example  this generates a random number between 75 to 100   final int random   new Random   nextInt 26    75

User · Answer

private int getRandomNumber int min int max        return  new Random    nextInt  max - min    1    min

User · Answer

the user is the one who select max no and min no    What do you mean by this line    You can use java function int random   Random nextInt n   This returns a random int in range 0  n-1      and you can set it in your textview using the setText   method

User · Answer

Also  from API level 21 this is possible   int random   ThreadLocalRandom current   nextInt min  max

User · Answer

Random r   new Random    int i1   r nextInt 45 - 28    28    This gives a random integer between 28  inclusive  and 45  exclusive   one of 28 29     43 44

[android] How can I generate a random number in a certain range?

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