Develop Reference

OpenCV3 error in Camera2Renderer.java [duplicate]

I imported the opencv android library to my android studio and the Camera2Renderer class has a lot of compiler errors because the android.hardware.camera2 classes can't be imported.

I solved the problem. Jim was right, I did not have the correct target API. For the next person who has this problem and finds this thread, the solution is that you have to make sure that the build.gradle files for your project and your OpenCV match.

I am working with openCVLibrary3.2.0 and trying to run its sample and faced same issue but I changed gradle files for both mysampleApp and openCVLibrary320 module as below
This is my app build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "org.opencv.face"
minSdkVersion 9
targetSdkVersion 21
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_5
targetCompatibility JavaVersion.VERSION_1_5
}
ndk {
moduleName "native_sample"
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
externalNativeBuild {
ndkBuild {
path 'src/main/jni/Android.mk'
}
}
}
dependencies {
compile project(path: ':openCVLibrary320')
}
and this my OpenCV library module build.gradle file
apply plugin: 'com.android.library'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
minSdkVersion 9
targetSdkVersion 21
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
Note:
things to notice are that compileSdkVersion, buildToolsVersion, minSdkVersion, and targetSdkVersion these must be same for all gradle files
I changed the compileSdkVersion from 14 to 23
and buildToolsVersion to "23.0.2"
this solved the camera2 import related issue

I am working on openCVLibrary330 trying to run its sample and faced same issue but i changed gradle files for openCVLibrary330 module as below
This is my app build.gradle
apply plugin: 'com.android.library'
android {
compileSdkVersion 23
buildToolsVersion "26.0.2"
defaultConfig {
minSdkVersion 8
targetSdkVersion 21
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}

I had the same problem. But, as many people have suggested I didn't had to change the gradle files to match exactly the same. I changed my compileSdkVersion and buildToolsVersion to the same on both gradle files, the rest are different. Its working fine now.

The SDK platform-tools version (23.1) is too old to check APIs compiled with API 25 - android

This is my build.gradle file
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.0"
buildTypes {
debug {
debuggable true
}
}
defaultConfig {
applicationId "com.wokoshop.sony.app"
minSdkVersion 14
targetSdkVersion 25
versionCode 32
versionName "4.16"
multiDexEnabled = true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
I am seeing following error in my all java files.
The SDK platform-tools version (23.1) is too old to check APIs compiled with API 25.
I am not using/seeing anywhere 23.1?
Why this error? how to fix this?

Proguard - also use proguard files from modules

My projects build.gradle looks like following:
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "..."
minSdkVersion 15
targetSdkVersion 22
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile project(':androKnife')
}
And my androKnife module does have it's own proguard file. How can I make my main project use this file as well?
Is there some way to auto merge all proguard files of all modules, if I compile a project? Is there another way a module can specify it's proguard rules and a project can inherit it?

The solution is to add following line to the libraries build.gradle: consumerProguardFiles 'proguard-rules.pro'
So my androKnife library looks like following:
apply plugin: 'com.android.library'
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
minSdkVersion 15
targetSdkVersion 22
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
consumerProguardFiles 'proguard-rules.pro'
}
}
}
dependencies {
...
}

So, main module proguard code, likes this:
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'main_proguard-rules.pro'
}
}
Who does know the principle of the inner relationship of proguardFiles? Auto merged or Overrided when has the same proguard code?

Android studio importing in gradle issue

I am new to Android Studio and was just trying to import my eclipse project. i am trying to resolve this issue for quite a while now but unable to.
I have a mainactivity project which uses mmany other libraries staggeredgridview, devsmart, google maps and appcompactv7. I am getting following 2 errors.
Note: mainactivity project is the one which i am working on and uses other external libraries.
Error:(7, 5) uses-sdk:minSdkVersion 8 cannot be smaller than version 9 declared in library B:\Android Studio Projects\mainActivity\build\intermediates\exploded-aar\com.google.android.gms\play-services\6.5.87\AndroidManifest.xml
Suggestion: use tools:overrideLibrary="com.google.android.gms" to force usage
:mainActivity:processDebugManifest FAILED
Error:Execution failed for task ':mainActivity:processDebugManifest'.
Manifest merger failed with multiple errors, see logs
build.gradle of mainactivity
apply plugin: 'com.android.application'
android {
compileSdkVersion 17
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.example.staggeredgridviewdemo"
minSdkVersion 8
targetSdkVersion 16
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
dependencies {
compile project(':devsmartAndroid')
compile project(':staggeredGridViewmaster')
compile 'com.google.guava:guava:16.0.1'
compile 'com.google.android.gms:play-services:+'
compile 'com.android.support:appcompat-v7:19.1.0'
compile files('libs/commons-codec-1.6.jar')
}
build.grade for devsmart
apply plugin: 'com.android.library'
android {
compileSdkVersion 14
buildToolsVersion "21.1.2"
defaultConfig {
minSdkVersion 4
targetSdkVersion 4
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
dependencies {
compile files('libs/CWAC-SackOfViewsAdapter.jar')
compile('com.android.support:appcompat-v7:19.1.0') {
// really use 19.1.0 even if something else resolves higher
force = true
}
}
build.gradle for sttageredgridview
apply plugin: 'com.android.library'
android {
compileSdkVersion 17
buildToolsVersion "21.1.2"
defaultConfig {
minSdkVersion 8
targetSdkVersion 16
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
dependencies {
compile('com.android.support:appcompat-v7:19.1.0') {
// really use 19.1.0 even if something else resolves higher
force = true
}
}

Just edit minsdk of your build.gradle of mainactivity to 9 :
defaultConfig {
applicationId "com.example.staggeredgridviewdemo"
minSdkVersion 9 // changed line
targetSdkVersion 16
}
Note : Also did the same for other libs if there minsdk is small then 9

Please open your manifest file and write the bellow code it will work
<uses-sdk tools:overrideLibrary="com.google.android.gms"/>
and add the list of libraries for uses-skd separated by comma

Go to all the manifest files or build.gradle files of all the projects and make the minSDKversions the same.8 for instance.

cannot resolve dependencies in Android Studio

Im really stuck whit this:
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion '20.0.0'
defaultConfig {
applicationId "com.example.testing"
minSdkVersion 14
targetSdkVersion 20
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile project(':External-Module')
}
I dont know what to do... I cant build project and use dependencies from External module.
the error is:
Error:(7, 47) error: package com.example.android.transfer does not exist
Error:(19, 9) error: cannot find symbol class ClientData
Error:(19, 25) error: cannot find symbol variable ClientData
Error:Execution failed for task ':Testing:compileDebugJava'.
but inside the IDE all is well and I can see the module
Here is also the External Module
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion '20.0.0'
defaultConfig {
applicationId "com.example.externalmodule"
minSdkVersion 14
targetSdkVersion 20
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
}

Your "External-Module" is an Android library, so according to the Gradle+Android documentation instead of
apply plugin: 'com.android.application'
it should be
apply plugin: 'com.android.library'
// Old version of the plugin
// apply plugin: 'android-library'
Also, make sure the imports in your app matches the package you are overriding in your library build script. Looks like the app is not founding com.example.android.transfer but the library package really is com.example.externalmodule