Fix #679 updated realpath util method

app/src/main/java/swati4star/createpdf/util/RealPathUtil.java

@@ -37,6 +37,9 @@ public static String getRealPath(Context context, Uri fileUri) {
 
     public static String getRealPathFromURI_API19(final Context context, final Uri uri) {
         // DocumentProvider
+        if (isDriveFile(uri)) {
+            return null;
+        }
         if (DocumentsContract.isDocumentUri(context, uri)) {
             // ExternalStorageProvider
             if (isExternalStorageDocument(uri)) {
@@ -47,6 +50,9 @@ public static String getRealPathFromURI_API19(final Context context, final Uri u
                 if ("primary".equalsIgnoreCase(type)) {
                     return Environment.getExternalStorageDirectory() + "/" + split[1];
                 }
+                if ("home".equalsIgnoreCase(type)) {
+                    return Environment.getExternalStorageDirectory() + "/" + split[1];
+                }
 
             } else if (isDownloadsDocument(uri)) {
 
@@ -67,6 +73,10 @@ public static String getRealPathFromURI_API19(final Context context, final Uri u
                     }
                 }
             }
+        } else {
+            StringBuilder path = StringUtils.trimExternal(uri.getPath().substring(1));
+            path.insert(0, Environment.getExternalStorageDirectory() + "/");
+            return path.toString();
         }
         return null;
     }
@@ -113,6 +123,20 @@ public static boolean isExternalStorageDocument(Uri uri) {
         return "com.android.externalstorage.documents".equals(uri.getAuthority());
     }
 
+    /**
+     * This function is used to check for a drive file URI.
+     *
+     * @param uri
+     * @return
+     */
+    public static boolean isDriveFile(Uri uri) {
+        if ("com.google.android.apps.docs.storage".equals(uri.getAuthority()))
+            return true;
+        if ("com.google.android.apps.docs.storage.legacy".equals(uri.getAuthority()))
+            return true;
+        return false;
+    }
+
     /**
      * @param uri The Uri to check.
      * @return Whether the Uri authority is DownloadsProvider.

app/src/main/java/swati4star/createpdf/util/StringUtils.java

@@ -60,4 +60,18 @@ public static String getDefaultStorageLocation() {
         return Environment.getExternalStorageDirectory().getAbsolutePath() +
                 pdfDirectory;
     }
+
+    /**
+     * This function is used to trim the root path name from
+     * the getPath() method so that it can be replaced by
+     * the External Storage Directory.
+     * @param path
+     * @return
+     */
+    public static StringBuilder trimExternal(String path) {
+        StringBuilder trimmedPath = new StringBuilder();
+        int tempPath = path.indexOf('/');
+        trimmedPath.append(path.substring(tempPath + 1));
+        return trimmedPath;
+    }
 }