From 7a7f1be950f959e208de799483c89291ba7a0119 Mon Sep 17 00:00:00 2001
From: YuutaW <17158086+trumeet@users.noreply.github.com>
Date: Fri, 19 Apr 2019 10:47:50 -0700
Subject: docs: add docs about the extended APIs

Signed-off-by: YuutaW <17158086+Trumeet@users.noreply.github.com>
---
 README.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/README.md b/README.md
index f918f2a..d2c52b7 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,31 @@ if (theFxxkFile.isFile()) {
 }
 ```
 
+## Extend usages
+
+Some APIs don't work with `SafFile`. In these cases, you should cast the returned `File` to `SafFile` and use extended APIs.
+
+```java
+SafFile theMagic = OhMySAF.ohMyUri(context, uri);
+```
+
+### Get Android Uri
+
+It returns the Android `Uri` and you can do ANYTHING you want with it.
+
+```java
+final Uri uri = theMagic.getAndroidUri();
+```
+
+### Open input / output stream
+
+The Java `FileInputStream` and `FileOutputStream` does not work with the file directly. Talk is cheap, let's show you the code:
+
+```java
+final OutputStream stream = theMagic.openOutputStream(this, "w");
+stream.close();
+```
+
 # Licenses
 
 Apache 2.0
\ No newline at end of file
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