Speculative fixes for keyboard crashes. Fixes #1821 (#1836)

Author: bluemarvin

app/src/common/shared/org/mozilla/vrbrowser/input/CustomKeyboard.java

@@ -114,7 +114,7 @@ private int getParentFieldInt(Object obj, String fieldName) {
             Field mField = getField(obj.getClass().getSuperclass(), fieldName);
             mField.setAccessible(true);
             return mField.getInt(obj);
-        } catch (IllegalAccessException e) {
+        } catch (IllegalAccessException | RuntimeException e) {
             e.printStackTrace();
             return 0;
         }
@@ -125,7 +125,7 @@ private Object getFieldObject(Object obj, String fieldName) {
             Field mField = getField(obj.getClass(), fieldName);
             mField.setAccessible(true);
             return mField.get(obj);
-        } catch (IllegalAccessException e) {
+        } catch (IllegalAccessException | RuntimeException e) {
             e.printStackTrace();
             return null;
         }
@@ -135,7 +135,7 @@ private Object getParentFieldObject(Object obj, String fieldName) {
             Field mField = getField(obj.getClass().getSuperclass(), fieldName);
             mField.setAccessible(true);
             return mField.get(this);
-        } catch (IllegalAccessException e) {
+        } catch (IllegalAccessException| RuntimeException e) {
             e.printStackTrace();
             return null;
         }
@@ -157,14 +157,15 @@ public static Field getField(Class<?> clazz, String fieldName) {
     }
 
     public static void setParentField(Object obj, String fieldName, Object value) {
+        if (obj.getClass().getSuperclass() == null) {
+            return;
+        }
         try {
             Field privateField = obj.getClass().getSuperclass().getDeclaredField(fieldName);
             privateField.setAccessible(true);
             privateField.set(obj, value);
 
-        } catch (NoSuchFieldException e) {
-            e.printStackTrace();
-        } catch (IllegalAccessException e) {
+        } catch (NoSuchFieldException | IllegalAccessException e) {
             e.printStackTrace();
         }
     }

app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/KeyboardWidget.java

@@ -19,6 +19,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.ExtractedText;
 import android.view.inputmethod.ExtractedTextRequest;
 import android.view.inputmethod.InputConnection;
 import android.widget.ImageButton;
@@ -799,7 +800,12 @@ private String getTextBeforeCursor(InputConnection aConnection) {
             return "";
         }
 
-        String fullText = aConnection.getExtractedText(new ExtractedTextRequest(),0).text.toString();
+        ExtractedText extracted = aConnection.getExtractedText(new ExtractedTextRequest(),0);
+        if ((extracted == null) || extracted.text == null) {
+            return "";
+        }
+
+        String fullText = extracted.text.toString();
         return aConnection.getTextBeforeCursor(fullText.length(),0).toString();
     }