I am writing an app using both the aws android api and the aws Amplify api. The issue occurs when I am using methods from AWSKinesisVideoClient (look at the line starting with Caused by).
E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: com.appliedstructures.myapp_v002, PID: 32474
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$4.done(AsyncTask.java:399)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
at java.util.concurrent.FutureTask.run(FutureTask.java:271)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:289)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
Caused by: java.lang.NoSuchFieldError: No instance field timeOffset of type I in class Lcom/amazonaws/services/kinesisvideo/AWSKinesisVideoClient; or its superclasses (declaration of 'com.amazonaws.services.kinesisvideo.AWSKinesisVideoClient' appears in /data/app/com.appliedstructures.myapp_v002-ktjX0i0uX6YfDy0RwrPWFA==/base.apk)
at com.amazonaws.services.kinesisvideo.AWSKinesisVideoClient.invoke(AWSKinesisVideoClient.java:1532)
at com.amazonaws.services.kinesisvideo.AWSKinesisVideoClient.describeSignalingChannel(AWSKinesisVideoClient.java:653)
at com.appliedstructures.myapp_v002.ui.home.HomeFragment$InfoUpdaterTask.doInBackground(HomeFragment.java:141)
at com.appliedstructures.myapp_v002.ui.home.HomeFragment$InfoUpdaterTask.doInBackground(HomeFragment.java:102)
However, when I manually inspect the code in that class, there is clearly a field called timeOffset. I read online that a source of this issue might be android's ProGuard (since it can remove unused code and accidentally remove this field as well). However, in my gradle.build I directly specified minifyEnabled false in both release and debug.
here is my gradle.build (root):
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
mavenCentral()
}
dependencies {
classpath "com.android.tools.build:gradle:7.0.3"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
And here is gradle.build (app):
plugins {
id 'com.android.application'
}
android {
compileSdk 30
defaultConfig {
applicationId "com.appliedstructures.myapp_v002"
minSdk 24
targetSdk 30
versionCode 1
versionName "1.0"
android
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
packagingOptions {
exclude 'com/fasterxml/jackson/databind/cfg/VERSION.txt'
exclude 'com/fasterxml/jackson/core/json/VERSION.txt'
exclude 'META-INF/DEPENDENCIES'
}
buildTypes {
release {
minifyEnabled false
//proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled false
}
}
compileOptions {
coreLibraryDesugaringEnabled true
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
buildFeatures {
viewBinding true
}
}
dependencies {
//builAmplify dependencies
implementation 'com.amplifyframework:core:1.28.1'
implementation 'com.amplifyframework:aws-auth-cognito:1.28.1'
//aws dependencies
def aws_version = '2.16.13'
implementation ("com.amazonaws:aws-android-sdk-kinesisvideo:$aws_version@aar") { transitive = true }
implementation ("com.amazonaws:aws-android-sdk-kinesisvideo-signaling:$aws_version@jar") { transitive = true }
implementation ("com.amazonaws:aws-android-sdk-mobile-client:$aws_version@aar") { transitive = true }
implementation ("com.amazonaws:aws-android-sdk-auth-userpools:$aws_version@aar") { transitive = true }
//android default dependencies
implementation 'androidx.appcompat:appcompat:1.3.1'
implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.1'
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1'
implementation 'androidx.navigation:navigation-fragment:2.3.5'
implementation 'androidx.navigation:navigation-ui:2.3.5'
testImplementation 'junit:junit:4. '
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
//support for Java 8 features
coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
}
So what is the source of the problem and how can it be fixed (refreshing gradle, and restarting android studio did not work)?
Edit: Here is the exact code snippet that causes the issue:
AWSKinesisVideoClient client;
try {
client = getAwsKinesisVideoClient();
} catch (Exception e) {
return FAILED;
}
DescribeSignalingChannelResult describeResult = client.describeSignalingChannel(
new DescribeSignalingChannelRequest().withChannelARN(channelName));
CodePudding user response：
To write Android apps that invoke AWS Services, consider using the new 
Code for this is:
package com.example.androidkinvideo
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.widget.Toast
import aws.sdk.kotlin.runtime.auth.credentials.StaticCredentialsProvider
import aws.sdk.kotlin.services.kinesisvideo.KinesisVideoClient
import aws.sdk.kotlin.services.kinesisvideo.model.DescribeStreamRequest
import kotlinx.coroutines.runBlocking
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
fun showARN(view: View) = runBlocking{
val staticCredentials = StaticCredentialsProvider {
accessKeyId = "AKIA33JWYxxxxxxxxxxxxxxx"
secretAccessKey = "/zyyrAnarbnxxxxxxxxxxxxxxxx"
}
val vidClient = KinesisVideoClient{
region = "us-east-1"
credentialsProvider = staticCredentials
}
val request = DescribeStreamRequest {
streamName = "ExampleStream"
}
val streamResponse = vidClient.describeStream(request)
val arnVal = streamResponse.streamInfo?.streamArn
if (arnVal != null) {
showToast(arnVal)
}
}
fun showToast(value:String){
val toast = Toast.makeText(applicationContext, value, Toast.LENGTH_SHORT)
toast.setMargin(50f, 50f)
toast.show()
}
}
Gradle Build:
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileOptions {
sourceCompatibility = 1.8
targetCompatibility = 1.8
coreLibraryDesugaringEnabled true
}
lintOptions {
abortOnError false
}
kotlinOptions {
jvmTarget = "1.8"
}
compileSdkVersion 30
buildToolsVersion "30.0.0"
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/license.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/notice.txt'
exclude 'META-INF/ASL2.0'
exclude("META-INF/*.kotlin_module")
}
defaultConfig {
applicationId "com.example.aws"
minSdkVersion 26
targetSdkVersion 30
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"])
api("aws.sdk.kotlin:kinesisvideo:0.6.0-alpha")
api("aws.sdk.kotlin:dynamodb:0.6.0-alpha")
coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'androidx.core:core-ktx:1.6.0'
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'
}