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Showing posts from October, 2013

Common tips about Gradle

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If you are using Gradle, you already know many of these tips.

In the last days many devs (they are using Eclipse) asked me some questions about Gradle.

I will not talk about what is Gradle, because you can find very good tutorial about it.
I will collect some common (and basic) cases.

First of all, if you are looking for a good tutorial, I suggest you these links:
Official GuideMark Allison's series Android Studio IDE helps you to manage Gradle files, but I suggest you understand what are the gradle files, so you can easily edit them manually.

I've just created a new project
It is important to understand the gradle structure.
- root - myProject build.gradle setting.gradle build.gradle At the root project you will find 2 files:
settings.gradlebuild.gradlesettings.gradle tells Gradle at build time that there are sub-projects to build.
Here an example: include ':myPproject' build.gradle defines how to build the project/module.

Why do I find 2 build.gradle files…

How to export a View as Bitmap

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In last days in my Card library, I tried to export a View as a Bitmap.


A simple way to export the view is to use following code: Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); view.draw(canvas);
Pay attention where you will use this code.

If you use this in onCreate() method, the View didn't go through a layout, so its size is null (0x0).
In these cases you have to use something like this before drawing the bitmap: view.measure(widthSpec, heightSpec); view.layout(left, top, right, bottom);
An example: int spec = MeasureSpec.makeMeasureSpec(0,MeasureSpec.UNSPECIFIED); view.measure(spec,spec); view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight()); Bitmap b = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas…