Develop Reference

What is this implemention? Android [duplicate]

This question already has answers here:
What is "deps" in "implementation deps.support.app_compat"?
(2 answers)
Closed 1 year ago.
I've downloaded a repository from github and in the dependencies I've founded this
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation deps.kotlin.stdlib
implementation deps.support.app_compat
implementation deps.support.design
implementation deps.support.core_ktx
implementation deps.constraint_layout
implementation deps.arch_core.runtime
// Navigation
implementation deps.navigation.runtime_ktx
implementation deps.navigation.fragment_ktx
implementation deps.navigation.ui_ktx
// Android Testing Support Library's runner and rules
androidTestImplementation deps.atsl.runner
androidTestImplementation deps.atsl.rules
androidTestImplementation deps.room.testing
androidTestImplementation deps.arch_core.testing
// Espresso UI Testing
androidTestImplementation deps.espresso.core
androidTestImplementation deps.espresso.contrib
androidTestImplementation deps.espresso.intents
}
So I've tried to instal those dependencies to my project but I got an error
A problem occurred evaluating project ':app'.
Could not get unknown property 'deps' for object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
So any ideas what this "desp" means?

This is a way (with ExtraPropertiesExtension) to keep build.gradle files as clean as possible with an external file like a version.gradle file in which there are all dependencies and their version.
buildscript {
apply from: 'versions.gradle'
...
}
You can find this version.gradle at the root of the project. This file is applied in the ./build.gradle
The developer decided to manage his dependencies in this way but you can find many others.
This article present 3 ways to do it.

Android: Program type already present: com.google.zxing.BarcodeFormat

I've develop a project using zxing to scan the barcode. I had followed the tutorial from here, but unfortunately I got error when I tried to run the project to device. The error that I get is
This is the build.gradle(app)
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
// volley
compile 'com.android.volley:volley:1.0.0'
// butter knife
compile 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
// picasso
implementation 'com.squareup.picasso:picasso:2.71828'
// QR Zxing Library
implementation 'com.journeyapps:zxing-android-embedded:3.6.0'
}
Below is External Libraries list.

After a day I tried to find out the solution, but everything failed. Then I decided to create a new project and copy the current source code together with build.gradle(app). Luckily no more error occurred when I run new project.
But I still don't know what the actual reason why I got that error before this, so I assume maybe some part of the old project are missing or have some bug on it.

Because at new project you change buildToolVersion
Reason : Its happened because being conflict between core.jar and zxing
Solution : Just change buildToolVersion and build , after that revert old toolVersion and build again !

After weeks of searching, the following steps help me resolve the issue like a charm:
1.Remove android platform.
2.Install cordova-plugin-facebook4
3.Create build.gradle in /plugins/cordova-plugin-facebook4/
4.Copy this
dependencies {
compile("com.facebook.android:facebook-android-sdk:4.37.0") {
exclude group: 'com.google.zxing'
}
}
to ../plugins/cordova-plugin-facebook4/build.gradle
5.Edit ../plugins/cordova-plugin-facebook4/plugins.xml change
to
6.Add platform android and build

Android kotlin mockMaker issues

Hi i am trying to mock a final class(as all classes in kotlin are final by default) and added the following dependencies in my gradle:
testImplementation 'junit:junit:4.12'
testImplementation 'au.com.dius:pact-jvm-consumer-junit_2.11:3.5.10'
testImplementation "org.mockito:mockito-android:2.13.0"
testImplementation 'org.mockito:mockito-inline:2.13.0'
testImplementation "org.mockito:mockito-core:2.13.0"
//testImplementation 'io.mockk:mockk:1.8'
testImplementation 'org.assertj:assertj-core:3.8.0'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test:rules:1.0.2'
androidTestImplementation 'junit:junit:4.12'
androidTestImplementation "org.mockito:mockito-core:2.13.0"
androidTestImplementation "org.mockito:mockito-android:2.13.0"
androidTestImplementation 'org.mockito:mockito-inline:2.13.0'
androidTestImplementation "com.android.support.test.espresso:espresso-intents:3.0.2"
the mockito-inline is supposed to enable you to mock a final kotlin class and so i added to both my java unit test and my instrumental test using testImplementation and androidTestImplementation
On building the project i get the following error:
More than one file was found with OS independent path 'mockito-extensions/org.mockito.plugins.MockMaker'
Any ideas whats going on? if i remove the androidTestImplementation of the mockitio inline, it compiles fine but when running intrumental test i get the mockito error saying it cannot mock a final class.

In order to be able to mock final classes in Kotlin, you’ll need to create a file
org.mockito.plugins.MockMaker (literally) that contains only this line
mock-maker-inline
and place it into
test/resources/mockito-extensions.
For more info please read https://antonioleiva.com/mockito-2-kotlin/.

mockito-inline won't work for instrumentation tests. In order to be able to mock final classes in instrumentation tests you just need to include the following line only:
androidTestImplementation com.linkedin.dexmaker:dexmaker-mockito-inline:2.28.0
Refer to its Github page for more details
This thread might also be useful.

As per this answer you cannot mock final classes in androidTest- it is a limitation explained in the Mockito Github issue tracker here:
There is no real possibility to make this [mocking of final classes] work in Android at the moment as it lacks the instrumentation API on top of which we are operating. The Android VM is not a standard VM and only implements a subset of the Java specification. As long as Google does not choose to extend its JVM, I am afraid that this feature will not work.

In my case, I got this error because I use implementation "org.mockito:mockito-inline:2.13.0" instead of testImplementation "org.mockito:mockito-inline:2.13.0"

How to set up Mockito for Kotlin and Android

I want to use Mockito for unit testing, so I added the Mockito library into my gradle dependencies.
testImplementation 'junit:junit:4.12'
testCompile 'org.mockito:mockito-core:2.12.0'
But still, I can not use any Mockito annotations.
/androidTest/ExampleTest.kt
#RunWith(MockitoJUnitRunner::class) // Unresolved reference MockitoJUnitRunner
#Mock // Unresolved reference Mock
What I'm missing it?

You need to add the following dependencies in your app's build.gradle:
dependencies {
// ... more entries
testCompile 'junit:junit:4.12'
// required if you want to use Mockito for unit tests
testImplementation 'org.mockito:mockito-core:2.24.5'
// required if you want to use Mockito for Android tests
androidTestImplementation 'org.mockito:mockito-android:2.24.5'
}
And click on sync

You may need another dependency:
androidTestCompile 'org.mockito:mockito-android:2.12.0'
Alternatively, you can try manually importing the annotations:
import static org.mockito.Mockito.*;
It could be that it didn't import properly and that's why it showed as an unresolved reference. Auto-import has its flaws

I have faced an issue with assembleDebugAndroidTest which is related to objenesis. So, based on Shylendra's answer, you may want to replace
androidTestImplementation 'org.mockito:mockito-android:2.24.5'
with
androidTestImplementation("org.mockito:mockito-core:2.8.47")

Very confortable library over mockito:
testImplementation 'org.mockito:mockito-inline:2.21.0'
testImplementation('com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0') {
exclude group: 'org.jetbrains.kotlin'
exclude group: 'org.mockito'
}
// Also works like a charm with instrumentation tests
androidTestImplementation 'org.mockito:mockito-android:3.5.13'
androidTestImplementation('com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0') {
exclude group: 'org.jetbrains.kotlin'
exclude group: 'org.mockito'
}

Incompatible JUnit tests with greenDAO

when I add greenDao Library in my proyect, my project doesn't work, because I have Junit test.
testCompile 'junit:junit:4.12'
compile ('de.greenrobot:DaoGenerator:1.3.0')
Any idea?

I fix my problem, I change this
compile ('de.greenrobot:DaoGenerator:1.3.0')
to
compile('de.greenrobot:greendao:1.3.7')