Remove dependencies from gradle

   * Remove appcompat-v4 dependency
   * Change from runtime to compileOnly appcompat-v7 dependency
   * Add log for when no location permissions added on Manifest

Author: Jeasmine

OneSignalSDK/onesignal/build.gradle

@@ -61,9 +61,11 @@ dependencies {
     // Also note, firebase & gms libraries use android.support:26.
     //   - They never refer to 27 or 28
     api 'com.android.support:cardview-v7:[26.0.0, 27.99.99]'
-    api 'com.android.support:support-v4:[26.0.0, 27.99.99]'
+    api 'com.android.support:support-fragment:[26.0.0, 27.99.99]'
     api 'com.android.support:customtabs:[26.0.0, 27.99.99]'
-    api 'com.android.support:appcompat-v7:[26.0.0, 27.99.99]'
+
+    // compileOnly as this is just for fallback code if AppCompatActivity wasn't added to the project.
+    compileOnly 'com.android.support:appcompat-v7:26.1.0'
 }
 
 apply from: 'maven-push.gradle'

OneSignalSDK/onesignal/src/main/java/com/onesignal/LocationGMS.java

@@ -206,6 +206,8 @@ static void getLocation(Context context, boolean promptLocation, LocationHandler
                else if (permissionList.contains("android.permission.ACCESS_COARSE_LOCATION")) {
                   if (locationCoarsePermission != PackageManager.PERMISSION_GRANTED)
                      requestPermission = "android.permission.ACCESS_COARSE_LOCATION";
+               } else {
+                  OneSignal.onesignalLog(OneSignal.LOG_LEVEL.INFO, "Location permissions not added on AndroidManifest file");
                }
 
                // We handle the following cases:

OneSignalSDK/onesignal/src/main/java/com/onesignal/OSSystemConditionController.java

@@ -30,9 +30,13 @@ boolean systemConditionsAvailable() {
             return false;
         }
 
-        if (isDialogFragmentShowing(ActivityLifecycleHandler.curActivity)) {
-            OneSignal.onesignalLog(OneSignal.LOG_LEVEL.WARN, "OSSystemConditionObserver dialog fragment detected");
-            return false;
+        try {
+            if (isDialogFragmentShowing(ActivityLifecycleHandler.curActivity)) {
+                OneSignal.onesignalLog(OneSignal.LOG_LEVEL.WARN, "OSSystemConditionObserver dialog fragment detected");
+                return false;
+            }
+        } catch (NoClassDefFoundError exception) {
+            OneSignal.onesignalLog(OneSignal.LOG_LEVEL.INFO, "AppCompatActivity is not used in this app, skipping 'isDialogFragmentShowing' check: " + exception);
         }
 
         boolean keyboardUp = OSViewUtils.isKeyboardUp(new WeakReference<>(ActivityLifecycleHandler.curActivity));
@@ -43,7 +47,7 @@ boolean systemConditionsAvailable() {
         return !keyboardUp;
     }
 
-    boolean isDialogFragmentShowing(Context context) {
+    boolean isDialogFragmentShowing(Context context) throws NoClassDefFoundError {
         // Detect if user has a dialog fragment showing
         if (context instanceof AppCompatActivity) {
             final FragmentManager manager = ((AppCompatActivity) context).getSupportFragmentManager();
@@ -67,7 +71,6 @@ public void onFragmentDetached(@NonNull FragmentManager fm, @NonNull Fragment fr
                 return fragment.isVisible() && fragment instanceof DialogFragment;
             }
         }
-
         // We already have Activity lifecycle listener, that listener will handle Activity focus/unFocus state
         //   - Permission prompts will make activity loose focus
         // We cannot detect AlertDialogs because they are added to the decor view as linear layout without an identification