It's been a while I'm trying to run/code a RecyclerView example, with no success though. I guess it has something to do with the RecyclerView version used in dependencies and the Android versions my project is using.
Currently, I'm trying to run this example here.
It doesn't mention what are the compileSdkVersion, minSdkVersion and so on.
Anyway, here's my gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.example.deluxe.example"
minSdkVersion 24
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'com.android.support:cardview-v7:28.0.0'
implementation 'com.android.support:recyclerview-v7:28.0.0-rc01'
implementation 'com.squareup.picasso:picasso:2.5.2'
}
Also in this example, the Adapter imports android.support.v7.widget.RecyclerView, for which I get an error: Cannot resolve symbol v7. So, Android suggested importing androidx.recyclerview.widget.RecyclerView;
Issue: my project doesn't load the RecyclerView in the MainActivity - it throws an exception:
Error inflating class android.support.v7.widget.RecyclerView
for which although there're similar questions here and here and here, I couldn't solve my issue.
I'm new to Android Studio, so can anyone suggest what should I change in order to run this Recycler/CardView example? I've tried several examples already, but wasn't able to run any of them - recent and older ones.
I'm trying to run using Android Nougat(7.0) and upper, but it's not mandatory. And my Android Studio version is 3.5.1
Because you're using Androidx (good), then you need to import the corresponding artifacts:
implementation 'androidx.recyclerview:recyclerview:1.1.0-beta04' (or whatever latest version exists)
And then in all the places where you reference RecyclerView, (hint: use Android studio "find" and search for the term recyclerview to find and evaluate all references and places where it's mentioned), and ensure you are referencing the new artifacts, e.g.:
import androidx.recyclerview.widget.RecyclerView in code and
<androidx.recyclerview.widget.RecyclerView ... in XML.
While you are at it, remove
implementation 'com.android.support:recyclerview-v7:28.0.0-rc01'
And if you can, replace:
implementation 'com.android.support:cardview-v7:28.0.0'
with:
implementation "com.google.android.material:material:1.1.0-alpha10"
And use:
<com.google.android.material.card.MaterialCardView
in your XMLs.
Related
Views stopped showing on Design Mode in Android Studio out of the blue (including the "hello world" textView). I haven't updated anything or changed anything.
I tried the following solutions:
(changing the theme) This view is not constrained android studio. I can not see the button even if I use Infer Constraints
inferring constraints.
(can't find the link) but the answer marked as correct said my SDK is corrupt -> updating it didn't work.
I'm suspecting Gradle is the culprit somehow, so here's the app's build script (a brand new project):
android {
compileSdkVersion 28
buildToolsVersion "28.0.3"
defaultConfig {
applicationId "com.cc.take6"
minSdkVersion 28
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.3.1'
implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}
my android Studio is version: 3.6.3.
Any ideas? thank you in advance.
Make sure you are using the latest stable version of Android Studio and all related tools
Update your project to use latest version of Gradle and everything
File -> Invalidate Caches and Restart
Build -> Clean Project
Build -> Rebuild Project
Run
I fixed the problem by changing the version of contraintLayout implementation that I was using. I added to the file build.gradle(:app):
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
I'm writing an android plugin for unity to be able to check if notifications are enabled for the game. I have one java class with a method for checking if notifications are enabled. When i build the plugin and then the .apk with unity everything works fine. But after installation, when calling the mehthod i get the following exception:
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/app/NotificationManagerCompat;
The Java class
package com.example.plugin;
import android.app.Activity;
import androidx.core.app.NotificationManagerCompat;
public class NotificationPlugin {
public static boolean areNotificationEnabled(Activity unityActivity) {
return NotificationManagerCompat.from(unityActivity).areNotificationsEnabled();
}
}
buld.gradle
apply plugin: 'com.android.library'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
minSdkVersion 14
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
consumerProguardFiles 'consumer-rules.pro'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}
gradle.properties
org.gradle.jvmargs=-Xmx1536m
android.useAndroidX=true
android.enableJetifier=true
Haven't found a solution anywhere else yet. Thank in advance. It's probably a super simple fix that i miss.
Update
Custom gradle.properties in unity set with android.enableJetifier and android.useAndroidX set to true
Jetifier was enabled in unity
Androidx.Core libary was added to the dependencies of the gradle.build file of the plugin
None of the above solved the issue
Solution
As Hamid Yusifli suggested in his answer a custom gradle build template needs to be enabled (Project Settings>Player>Publishing Settings>Custom Main Gralde Template) and the dependencies for the libary need to be added (implementation 'androidx.core:core:1.5.0' in my case). This solved the issue.
So, seems like in your case unity ignores your library gradle dependencies,
there are many different reasons why this could happen. To force unity to include missing dependencies you must provide a custom Gradle build template and add your dependencies in that file.
I am trying to develop an SFTP client using sshj on Android studio such that the App can connect securely to the server using SFTP over ssh. The code was running fine, but when I added the "sshj-0.10.0" module, it gives me this complicated error.
The "sshj-0.10.0" module is needed to run server code using net library as below:
import net.schmizz.sshj.SSHClient;
import net.schmizz.sshj.sftp.SFTPClient;
I added the module the project and configured it in the dependencies in build.gradel of the app as shown below:
What I have tried so far (but not limited to):
1- Clean Project then Rebuild Project - failed
2- Invalidate Caches / Restart - failed
3- Delete .gradle and .idea from my root project- failed
4- Added
android {
defaultConfig {
multiDexEnabled true
}
}
and
dependencies {// Multidex
implementation 'com.android.support:multidex:1.0.3'
implementation project(path: ':sshj-0.10.0')
}
No solution was worked with me.
Here is my build.gradle(:app)
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.mohsenali.autosen"
minSdkVersion 23
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
android {
defaultConfig {
multiDexEnabled true
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:2.0.2'
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'
//TedPermission
implementation 'gun0912.ted:tedpermission:1.0.3'
implementation files('D:/SKKU_PhD/Android/workspace_2018_projects/AutoSen/app/libs/commons-net-3.7.1.jar')
// Multidex
implementation 'com.android.support:multidex:1.0.3'
implementation project(path: ':sshj-0.10.0')
}
I know that this kind of error is popular but I tried many possible solutions available on SO since two days ago but none of them has helped me. So please don't mark it duplicated, maybe someone could help. Thanks.
Finally, I solved this error bu creating "libs" folder in the root of "app" project, and added the .jar library to it. After that I updated the code in "build.gradle(:app)" by adding this line: "implementation files('path to/app/libs/jsch-0.1.55.jar')".
I have updated my android build.gradle to latest version now i am getting an error.
I have searched answers regarding this here(stackover flow),but none work for me .
my build.gradle code is:--->
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.parse.starter"
minSdkVersion 16
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
when i click on "sync now" then the error appears as:--->
This project uses AndroidX Dependencies,but the 'android.useAndroidX' property is not enabled.
After searching some answers here(stackover flow) .i created a file 'gradle.property' from File>new>Files(named as gradle.property) and added codes on it as:--->
org.gradle.jvmargs=-Xmx2048m
android.useAndroidX=true
android.enableJetifier=true
After doing this when i click again on "sync now".then again the same error appears (This project uses AndroidX Dependencies,but the 'android.useAndroidX' property is not enabled.)
I dont know how to fix this issue.
please Help
thankyou.
Try this solution go to :
Refactor -> Refactor this -> Migrate to Androidx -> click migrate , then a pop up message will show up to ask you if you want to save a copy of the project by ticking that checkbox ( up to you ) --> then do refactor
You might have migrated to android x manually
Try using built in migrator
https://developer.android.com/jetpack/androidx/migrate
Just right click , then go to refractor> migrate to AndroidX
When I use com.android.support:appcompat-v7:28.+ in my project's build.gradle(module) it works without any error. But when I just use com.android.support:appcompat-v7:28, just without .+, it gives me an error:
Failed to resolve: com.android.support:appcompat-v7:28.0
Just without the .+ end of it. I added maven before but the result was the same. Any idea to solve it?
28.0.0 is the final version of support libraries. Android has migrated to AndroidX. To use the latest android libraries, Migrating to AndroidX
Edit: Versions 28.0.0-rc02 and 28.0.0 are now available.
I don't see any 28.0 version on Google Maven. Only 28.0.0-alpha1 and 28.0.0-alpha3. Just change it to either of those or how it was previously, i.e., with .+ which just means any version under 28 major release.
For an alpha appcompat release 28.+ makes more sense.
Add the following code on build.gragle (project) for adding Google maven repository
allprojects {
repositories {
...
maven {
url 'https://maven.google.com/'
name 'Google'
}
...
}
}
some guys who still might have the problem like me (FOR IRANIAN and all the coutries who have sanctions) , this is error can be fixed with proxy
i used this free proxy for android studio 3.2
https://github.com/freedomofdevelopers/fod
just to to Settings (Ctrl + Alt + S) and search HTTP proxy then check Manual proxy configuration then add fodev.org
for host name and 8118 for Port number
As #Sourabh already pointed out, you can check in the Google Maven link what are the packages that Google has listed out.
If you, like me, are prompted with a similar message to this Failed to resolve: com.android.support:appcompat-v7:28.0, it could be that you got there after upgrading the targetSdkVersion or compileSdkVersion.
What is basically happening is that the package is not being found, as the message correctly says. If you upgraded the SDK, check the Google Maven, to check what are the available versions of the package for the new SDK version that you want to upgrade to.
I had these dependencies (on version 27):
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support:recyclerview-v7:27.1.1'
implementation 'com.android.support:cardview-v7:27.1.1'
implementation 'com.android.support:support-v4:27.1.1'
And I had to change the SDK version and the rest of the package number:
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support:recyclerview-v7:28.0.0'
implementation 'com.android.support:cardview-v7:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
Now the packages are found and downloaded. Since the only available package for the 28 version of the SDK is 28.0.0 at the moment of writing this.
Run
gradlew -q app:dependencies
It will remove what is wrong.
my problem was just network connection. using VPN solved the issue.
implementation 'com.android.support:appcompat-v7:28.0'
implementation 'com.android.support:support-media-compat:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
All to add
Ensure that your buildToolsVersion version tallies with your app compact version.
In order to find both installed compileSdkVersion and buildToolsVersion go to Tools > SDK Manager. This will pull up a window that will allow you to manage your compileSdkVersion and your buildToolsVersion.
To see the exact version breakdowns ensure you have the Show Package Details checkbox checked.
android {
compileSdkVersion 28
buildToolsVersion "28.0.3" (HERE)
defaultConfig {
applicationId "com.example.truecitizenquiz"
minSdkVersion 14
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0' (HERE)
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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'
}
in build.gradle , the version of bellow line should be same
implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
implementation 'com.android.support:design:28.0.0'