App Inventor 2
Programming mobile phones with Android 
by App Inventor 2 - Juan Antonio Villalpando

- Initiation Tutorial App Inventor 2 -

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- Here we see a game of Russian Roulette and other Minesweeper.

4.- Russian Roulette.

ip4_russian roulette.aia   (This is the source code file to be consulted, modified, debug ... in App Inventor 2 )

p4_ruleta_rusa.apk

(By this QR code can also install this application on a mobile. This installation is simpler)

Let's see a game - based of Russian Roulette.

In this case we have a revolver for 6 bullets.

- First Reload revolver putting a single bullet and rotating the drum. The bullet will be located randomly in one of the six sites.

- Then let 's pressing randomly the different buttons .

- If the number instead of the bullet matches the number of the button pressed, the screen turns red.

- Else, (Button.Enabled = False).

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Design

I acted on the widths and heights to resize the controls.

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Blocks

NOTE: - For the blocks if ... then ... if not Click on the blue flag and drag the sub - block if not,

When you click the button Reload, Button7.Click, a random number from 1 to 6 is created, they are enabled ( Enable = True ) all buttons and the bottom of the screen goes blank it gets.

When you press any button:

- If the value x randomly generated in the reset matches the number of the button, the screen turns red.

- Else, it disables the button down.

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4B.- Minesweeper.

p4B_busca_minas.aia   (This is the source code file to be consulted, modified, refined ... in App Inventor 2)

p4b looking minas.apk

(By this QR code can also install this application on a mobile. This installation is simpler)

- Based on the previous application of "Russian Roulette", we will build a simple "Minesweeper".

- Let's modify a bit the Design and blocks, but keep the style.

- Press the button "Start", 6 random numbers (which only have two values: 0 or 1) will be created. Each random number is assigned to a button:b1, b2, b2, b4, b6 and b5.

- If the random number is 1, it means that there is a mine. If it is a 0 no mine.

- The user pressed the buttons. If the pressed button has a corresponding variable to 1, you will have a mine and the screen is colored red.

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Design

- It is similar to "Russian Roulette".

- Add Label1.

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Blocks

NOTE:- To put different summands, click on blue icon block sum and we add "number".

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Beginning of the blocks:

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Minesweeper Buscaminas.aia - This application was made ​​Aulafor of Valencia, was the winner of our first contest App inventor.- It is a simple minesweeper. We start six places where they can be mines. Pressing the start button mines are created in some random places. The player must hit where the mines are. - The code contains blocks that have not yet seen: Lists, Any button ... but it is advisable to take a look and compare it with the previous application of Russian roulette. - Le randomly assigned to each button a 0 or a 1, this will mark having or not mine. So that several buttons may have zero or one, may be several mine.

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