it compiles again... mostly. Example app does not work again, yet. I am on it.

Author: thsc42

app/build.gradle

@@ -15,7 +15,7 @@ android {
         targetSdkVersion 29
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
     buildTypes {
         release {
@@ -28,10 +28,10 @@ android {
 dependencies {
     //implementation fileTree(include: ['*.jar'], dir: 'libs')
 
-    implementation 'com.android.support:appcompat-v7:28.0.0'
-    implementation 'com.android.support.constraint:constraint-layout:2.0.4'
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation files('libs\\ASAPJava.jar')
     testImplementation 'junit:junit:4.13.1'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
 }

app/src/androidTest/java/net/sharksystem/asap/android/ExampleInstrumentedTest.java

@@ -1,8 +1,8 @@
 package net.sharksystem.asap.android;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

app/src/androidTest/java/net/sharksystem/asap/android/LoRaEngine/Base64Test.java

@@ -2,8 +2,8 @@
 
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.FixMethodOrder;
 import org.junit.Test;

app/src/androidTest/java/net/sharksystem/asap/android/LoRaEngine/BasicCommunicationTest.java

@@ -4,12 +4,8 @@
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothSocket;
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
-
-import net.sharksystem.asap.android.lora.ASAPLoRaException;
-import net.sharksystem.asap.android.lora.LoRaBTInputOutputStream;
-import net.sharksystem.asap.android.lora.messages.DiscoverASAPLoRaMessage;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.BeforeClass;
 import org.junit.FixMethodOrder;

app/src/androidTest/java/net/sharksystem/asap/android/LoRaEngine/SimultaneousCommunicationTest.java

@@ -4,8 +4,8 @@
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothSocket;
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.BeforeClass;
 import org.junit.FixMethodOrder;

app/src/main/java/net/sharksystem/asap/android/apps/ASAPActivity.java

@@ -11,8 +11,8 @@
 import android.os.Message;
 import android.os.Messenger;
 import android.os.RemoteException;
-import android.support.annotation.CallSuper;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.CallSuper;
+import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
 import android.widget.Toast;
 

app/src/main/java/net/sharksystem/asap/android/apps/ASAPAndroidPeer.java

@@ -6,9 +6,9 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
-import android.support.annotation.CallSuper;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
+import androidx.annotation.CallSuper;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.widget.Toast;
 
@@ -31,8 +31,8 @@
 import java.util.Map;
 import java.util.Set;
 
-import static android.support.v4.content.PermissionChecker.PERMISSION_DENIED;
-import static android.support.v4.content.PermissionChecker.PERMISSION_GRANTED;
+import static androidx.core.content.PermissionChecker.PERMISSION_DENIED;
+import static androidx.core.content.PermissionChecker.PERMISSION_GRANTED;
 
 public class ASAPAndroidPeer extends BroadcastReceiver implements ASAPPeer {
     private static final int MY_ASK_FOR_PERMISSIONS_REQUEST = 100;
@@ -133,10 +133,6 @@ private ASAPAndroidPeer(Collection<CharSequence> supportedFormats,
         // remember me
         ASAPAndroidPeer.singleton = this;
 
-        // create proxy
-        this.asapPeerApplicationSide =
-                new ASAPPeerFS(asapOwner, this.getASAPRootFolder(), supportedFormats);
-
         // set context
         this.setActivity(initialActivity);
 
@@ -160,7 +156,7 @@ private ASAPAndroidPeer(Collection<CharSequence> supportedFormats,
     /**
      * Start initialized ASAPAndroidPeer
      */
-    public static void startPeer() {
+    public static void startPeer() throws IOException, ASAPException {
         ASAPAndroidPeer.getASAPAndroidPeer().start();
     }
 
@@ -175,7 +171,7 @@ public static boolean peerStarted() {
      * <b>Never forget to launch your application.</b>
      */
     @CallSuper
-    public void start() {
+    public void start() throws IOException, ASAPException {
         if(!this.started) {
             Log.d(this.getLogStart(), "initialize and launch ASAP Service");
             // collect parameters
@@ -213,6 +209,12 @@ public void start() {
         } else {
             Log.e(this.getLogStart(), "try to re-start application - not allowed. Ignored");
         }
+
+        // finally create proxy
+        this.asapPeerApplicationSide =
+                new ASAPPeerFS(asapOwner, this.getASAPRootFolder(), supportedFormats);
+
+
     }
 
     private void askForPermissions() {

app/src/main/java/net/sharksystem/asap/android/example/ASAPInitialExampleActivity.java

@@ -2,9 +2,10 @@
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.widget.Toast;
 
+import net.sharksystem.asap.ASAP;
 import net.sharksystem.asap.ASAPException;
 import net.sharksystem.asap.android.apps.ASAPAndroidPeer;
 
@@ -20,9 +21,14 @@ protected void onCreate(Bundle savedInstanceState) {
             // initialize ASAP peer (application side)
             if(!ASAPAndroidPeer.peerInitialized()) {
                 Collection<CharSequence> formats = new ArrayList<>();
+
+                // add a name that identifies your app which also identifies general message format
                 formats.add(ExampleAppDefinitions.ASAP_EXAMPLE_APPNAME);
 
-                ASAPAndroidPeer.initializePeer(formats, this);
+                // generate a name for this peer
+                String peerName = ASAP.createUniqueID();
+
+                ASAPAndroidPeer.initializePeer(peerName, formats, this);
             }
 
             // start ASAP peer (service side)

app/src/main/java/net/sharksystem/asap/android/service/ASAPService.java

@@ -6,7 +6,7 @@
 import android.content.pm.PackageManager;
 import android.os.IBinder;
 import android.os.Messenger;
-import android.support.v4.content.ContextCompat;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 
 import net.sharksystem.asap.ASAPEnvironmentChangesListener;