From d7b485a50cb328ffa8768aa7dec64f493626279d Mon Sep 17 00:00:00 2001
From: Jimmy Chen <jimmycmchen@google.com>
Date: Fri, 7 Sep 2018 14:46:38 +0800
Subject: [PATCH] WiFiDirectServiceDiscovery: Create a thread for sending
 message

From Android 4.0, it is not allowed to do network io on main thread.
Do write method in another thread to adapt this change.

Bug: 113998459
Test: manual test with two devices

Change-Id: I0d251fab110d34167d47e9c3a50af3307b76d5b7
---
 .../wifidirect/discovery/ChatManager.java      | 18 ++++++++++++------
 .../wifidirect/discovery/WiFiChatFragment.java |  3 +--
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/ChatManager.java b/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/ChatManager.java
index d537f1067..52fb7a096 100644
--- a/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/ChatManager.java
+++ b/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/ChatManager.java
@@ -65,12 +65,18 @@ public class ChatManager implements Runnable {
         }
     }
 
-    public void write(byte[] buffer) {
-        try {
-            oStream.write(buffer);
-        } catch (IOException e) {
-            Log.e(TAG, "Exception during write", e);
-        }
+    public void write(String msg) {
+        byte[] buffer = msg.getBytes();
+        Thread thread = new Thread() {
+            public void run() {
+                try {
+                    oStream.write(buffer);
+                } catch (IOException e) {
+                    Log.e(TAG, "Exception during write", e);
+                }
+            }
+        };
+        thread.start();
     }
 
 }
diff --git a/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/WiFiChatFragment.java b/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/WiFiChatFragment.java
index e4a1858b0..1c9dcab95 100644
--- a/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/WiFiChatFragment.java
+++ b/samples/WiFiDirectServiceDiscovery/src/com/example/android/wifidirect/discovery/WiFiChatFragment.java
@@ -43,8 +43,7 @@ public class WiFiChatFragment extends Fragment {
                     @Override
                     public void onClick(View arg0) {
                         if (chatManager != null) {
-                            chatManager.write(chatLine.getText().toString()
-                                    .getBytes());
+                            chatManager.write(chatLine.getText().toString());
                             pushMessage("Me: " + chatLine.getText().toString());
                             chatLine.setText("");
                             chatLine.clearFocus();