DFIND THE CENTER OF CANVAS ANDROID HOW TO
DFIND THE CENTER OF CANVAS ANDROID ANDROID
DFIND THE CENTER OF CANVAS ANDROID SERIES

DFIND THE CENTER OF CANVAS ANDROID ANDROID

Get the image of an Android on a skateboard from GitHub and add it to your drawable folder. • To restart the game touch the screen again.

• Once you find the Android, lift your finger to end the game. • Touch and hold the screen for the spotlight. • Find the Android hidden behind the dark surface.

Open strings.xml and add the following strings for the app title and game instructions.

Create a new Kotlin project called FindMe that uses the Empty Activity template.

In this task, you create the FindMe app from scratch, so you will set up a project and define some strings.

Spotlight is not centered under the finger, so that the user can see what's inside the circle.

The following screenshots show the FindMe app at startup, when the user is dragging their finger, and after the user has found the Android image by moving around the spotlight.

When the user touches the screen again, the screen turns black and the Android image is hidden in a new random location.

When the white circle overlaps with the hidden Android image, and the user lifts their finger, the screen lights up to reveal the complete image.

While the user drags their finger, the white circle follows the touch.

The player has to touch and hold the screen to reveal the 'spotlight' (white circle).

Once the play button has been clicked, a black screen is displayed.

DFIND THE CENTER OF CANVAS ANDROID HOW TO

At app startup, a dialog with instructions on how to play with a play button is displayed.

The FindMe app lets you search for an Android image on a dark phone screen using a 'spotlight.'

Create a simple game with a spotlight to find a hidden Android image.

How to set a Shader for a Paint and use it to modify what is being drawn.

In this codelab, you will use a BitmapShader to set a bitmap as a texture to the Paint object, instead of a simple color. To draw images in different shapes (rounded rectangle in this example), you can define a BitmapShader for your Paint object and use the drawRoundRect() method to draw a rectangle with rounded corners, as shown below. You can also use masks with transition animations to create impressive visual effects. This allows you to implement custom themes with translucent effects, and custom views with a bitmap as a texture. Android defines several subclasses of Shader for Paint to use, such as BitmapShader, ComposeShader, LinearGradient, RadialGradient, and SweepGradient.įor example, you can use a BitmapShader to define a bitmap as a texture to the Paint object. In Android, Shader defines the color(s) or the texture with which the Paint object should draw (other than a bitmap). In computer graphics, a shader is a type of computer program that was originally used for shading (the production of appropriate levels of light, darkness, and color within an image), but which now performs a variety of specialized functions in various fields of computer graphics special effects. We recommend that you do all the codelabs in order, because they progress through tasks step-by-step.

DFIND THE CENTER OF CANVAS ANDROID SERIES

This codelab is part of a series that guides you through building custom views, drawing on a canvas, clipping canvas objects, and using shaders for cool effects. All the course codelabs are listed on the Advanced Android in Kotlin codelabs landing page. You'll get the most value out of this course if you work through the codelabs in sequence, but it is not mandatory. This codelab is part of the Advanced Android in Kotlin course.

Dfind the center of canvas android