ball-640x480.jpg
https://drive.google.com/uc?export=download&id=1qY29W9WNg3GJQ-1EJhh2_yK8dE9_8At8

ball-100x100.jpg
https://drive.google.com/uc?export=download&id=10v4JypPtP-C1-ieA_-8XRVTClB9bVdW7

Source-code-The-Button-Counter-App-The-Constraint-Layout
https://drive.google.com/uc?export=download&id=175lgZnZzNAFeoNeEwcu4ygWH_kVEDiPP

Source-code-The-Button-Counter-App-Constraints-and-Resizing
https://drive.google.com/uc?export=download&id=1XFKZlLdwdtKynYzmGnfTrcyQ6Z-jBGaV

ImageView.ScaleType
https://developer.android.com/reference/android/widget/ImageView.ScaleType.html

Source-code-The-Button-Counter-App-Positioning-Widgets
https://drive.google.com/uc?export=download&id=1_XzGmPcz5y4ckv9CJAWaRUX9gnmH9pGv

Source-code-The-Button-Counter-App-Inner-Lines-within-a-Widget
https://drive.google.com/uc?export=download&id=13t7bPxqKjfAlfLdutdWr1ZH0fsV2rY8B

Supporting-Different-Densities
https://developer.android.com/training/multiscreen/screendensities.html

Source-code-The-Button-Counter-App-Layouts-on-Different-Devices
https://drive.google.com/uc?export=download&id=1q1nX6z49YYwcPgMMNqijst2XdXdVvH8-

Source-code-The-Button-Counter-App-More-on-the-Constraints
https://drive.google.com/uc?export=download&id=14anDAzGKje1STTnPk8lbOCuBvKj56dJT

Source-code-The-Button-Counter-App-Baseline-Constraints
https://drive.google.com/uc?export=download&id=1WVgfBccmBxdHohvM_7pZ9buRuG2dYXFz

text.txt
https://drive.google.com/uc?export=download&id=175gNox4NnG3VzVrvcO35lBL4n-UceHUz

Source-code-The-Button-Counter-App-Constraining-Widgets
https://drive.google.com/uc?export=download&id=1885mPBIi6XIPKkcexqiWLHZLowlYPKMN

Source-code-The-Button-Counter-App-Add-Scrolling-Capabilities
https://drive.google.com/uc?export=download&id=1QbTlUCk4FIfiNEWjZiNgBofsJKlCQYGf

Source-code-The-Button-Counter-App-The-Button-Counter-App
https://drive.google.com/uc?export=download&id=1CgUkR2whNDl9pP2T8lDCON_-gPY_CVVG

Source-code-The-Button-Counter-App-Finish-Layout
https://drive.google.com/uc?export=download&id=15bXf5eVShbiUu9BykUNIXscufgO3ceJz

Developer-Android-Studio-Guide
https://developer.android.com/guide/index.html

Activity
https://developer.android.com/reference/android/app/Activity.html

Activities
https://developer.android.com/guide/components/activities/index.html

The-Activity-Lifecycle
https://developer.android.com/training/basics/activity-lifecycle/recreating.html