Migrate android.support -> androidx (#328)

Author: Kadi Kraman

android/gradle.properties

@@ -0,0 +1,2 @@
+android.useAndroidX=true
+android.enableJetifier=true

android/src/main/java/com/rnappauth/RNAppAuthModule.java

@@ -7,11 +7,10 @@
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.customtabs.CustomTabsCallback;
-import android.support.customtabs.CustomTabsClient;
-import android.support.customtabs.CustomTabsServiceConnection;
-import android.util.Log;
+import androidx.annotation.Nullable;
+import androidx.browser.customtabs.CustomTabsCallback;
+import androidx.browser.customtabs.CustomTabsClient;
+import androidx.browser.customtabs.CustomTabsServiceConnection;
 
 import com.facebook.react.bridge.ActivityEventListener;
 import com.facebook.react.bridge.ReactApplicationContext;

android/src/main/java/com/rnappauth/RNAppAuthPackage.java

@@ -9,6 +9,7 @@
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.uimanager.ViewManager;
 import com.facebook.react.bridge.JavaScriptModule;
+
 public class RNAppAuthPackage implements ReactPackage {
     @Override
     public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {

android/src/main/java/com/rnappauth/utils/CustomConnectionBuilder.java

@@ -16,7 +16,7 @@
 
 
 import android.net.Uri;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 
 import net.openid.appauth.connectivity.ConnectionBuilder;
 

android/src/main/java/com/rnappauth/utils/MapUtil.java

@@ -1,6 +1,6 @@
 package com.rnappauth.utils;
 
-import android.support.annotation.Nullable;
+import androidx.annotation.Nullable;
 
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.bridge.ReadableMapKeySetIterator;

android/src/main/java/com/rnappauth/utils/UnsafeConnectionBuilder.java

@@ -17,8 +17,8 @@
 
 import android.annotation.SuppressLint;
 import android.net.Uri;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import android.util.Log;
 
 import net.openid.appauth.Preconditions;