There is no virtual method com_polidea_rxandroidble_internal_radio_RxBleRadioImpl $$ Lambda $ 1_lambda $ new $ 0 () V

Question

I am new to Android Developement and I am trying to implement Bluetooth LE features in my application. I have some difficulties running my Android project with RXAndroidBLE. This library uses lambda and I can not start it.

I updated the gradle file:

apply plugin: 'com.android.application' android { compileSdkVersion 25 buildToolsVersion "25.0.2" defaultConfig { applicationId "com.example.maxime.applicationtest" minSdkVersion 18 targetSdkVersion 25 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" jackOptions { enabled true } } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) compile 'com.android.support:appcompat-v7:25.1.0' testCompile 'junit:junit:4.12' compile "com.polidea.rxandroidble:rxandroidble:1.1.0" } 

When I try to run the following code in my MainActivity, an error message is displayed:

 protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); RxBleClient rxBleClient = RxBleClient.create(this); Subscription scanSubscription = rxBleClient.scanBleDevices() .subscribe( rxBleScanResult -> { // Process scan result here. Log.e("DEVICE", rxBleScanResult.getBleDevice().getName()); }, throwable -> { // Handle an error here. } ); // When done, just unsubscribe. scanSubscription.unsubscribe(); } 

 FATAL EXCEPTION: Thread-4847 Process: com.example.maxime.applicationtest, PID: 27342 java.lang.NoSuchMethodError: No virtual method com_polidea_rxandroidble_internal_radio_RxBleRadioImpl$$Lambda$1_lambda$new$0()V in class Lcom/polidea/rxandroidble/internal/radio/RxBleRadioImpl; or its super classes (declaration of 'com.polidea.rxandroidble.internal.radio.RxBleRadioImpl' appears in /data/app/com.example.maxime.applicationtest-1/base.apk) at com.polidea.rxandroidble.internal.radio.RxBleRadioImpl$$Lambda$1.run(Unknown Source) at java.lang.Thread.run(Thread.java:818) 

I do not know why this is going wrong.

If anyone could help me, that would be great. Thanks!

Answer 1

I finally found a solution by removing jackOptions. Now it works like a charm.

Answer 2

This one has a problem too. But just removing jackOptions did not work. I had to add retrolambda to my project. My gradle assembly now looks like this:

 apply plugin: 'com.android.application' apply plugin: 'me.tatarka.retrolambda' buildscript { repositories { mavenCentral() } dependencies { classpath 'me.tatarka:gradle-retrolambda:3.3.1' } } repositories { mavenLocal() } android { compileSdkVersion 24 buildToolsVersion "24.0.3" defaultConfig { applicationId "com.trump.islove" minSdkVersion 18 targetSdkVersion 24 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) compile 'com.android.support:appcompat-v7:24.2.1' compile "com.polidea.rxandroidble:rxandroidble:1.1.0" compile 'com.jakewharton:butterknife:8.4.0' annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0' testCompile 'junit:junit:4.12' } 

Answer 3

you must write to the build.gradle file:

 apply plugin: 'me.tatarka.retrolambda' buildscript { repositories { mavenCentral() } dependencies { classpath 'me.tatarka:gradle-retrolambda:3.3.1' } }