artilla's blog

http://blog.codeonion.com/2015/11/25/creating-a-new-opencv-project-in-android-studio/

It is really frustrating to build OpenCV native code with new Android Studio. The new Android Studio doesn't use make files, instead, sets compile options in app's builde.gradle file. The new gradle experimental(0.6.0-beta4) has some changes in DSL. It uses '.add' function, not '+='. Look at Sample Project at github AndroidOpenCVNDKDemo . It use Android Studio 2.0 beta5, gradle-experimental:0.6.0-beta, and OpenCV 3.1.0. I hope this will save your time. Useful sites http://tools.android.com/tech-docs/new-build-system/gradle-experimental http://ph0b.com/new-android-studio-ndk-support/ https://github.com/joaopedronardari/OpenCV-AndroidSamples -- 2016.03.06 Updated step by step explanation for Android NDK http://web.guohuiwang.com/technical-notes/androidndk1

There is an error of RxJava when generating signed apk using proguard in Android Studio. The solution in my case is this link . Add the following at the proguard rules. -keepclassmembers class rx.internal.util.unsafe.*ArrayQueue*Field* { long producerIndex; long consumerIndex; } -keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef { long producerNode; long consumerNode; }

When importing custom modules in android studio, they are copied into the project folder. If you want the original library project to be imported to the project without copy, set as follows. In settings.gradle,   include 'custom-library'   project(':custom-library').projectDir = new File(settingsDir, 'relative/path/to/custom/library') In builde.gradle of App,   compile project(':custom-library')

When Grandle build failed with Already disposed Module error, 1. close the project. 2. in project folder, ./gradlew clean 3. reopen the project http://stackoverflow.com/questions/27541838/android-studio-gradle-already-disposed-module

If to remove Log.x for release, set ProGuard in build.gradle as follow proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' and add those to proguard-rules.pro   -assumenosideeffects class android.util.Log {       public static *** d(...);       ..   } Be careful, assumenosideeffects  make effect at optimization level, so you should use proguard-android-optimize.txt instead proguard-android.txt