altosdroid: Check for closed before writing/reading bluetooth

[fw/altos] / altosdroid / src / org / altusmetrum / AltosDroid / AltosBluetooth.java

diff --git a/altosdroid/src/org/altusmetrum/AltosDroid/AltosBluetooth.java b/altosdroid/src/org/altusmetrum/AltosDroid/AltosBluetooth.java
index baf38fb71aa854a24a24a30abac96c3eddd61182..51937b7faa6999f7c125188aa7a5e1be35f4c861 100644 (file)
--- a/altosdroid/src/org/altusmetrum/AltosDroid/AltosBluetooth.java
+++ b/altosdroid/src/org/altusmetrum/AltosDroid/AltosBluetooth.java
@@ -30,7 +30,7 @@ import android.bluetooth.BluetoothSocket;
 import android.os.Handler;
 //import android.os.Message;
 
-import org.altusmetrum.altoslib_9.*;
+import org.altusmetrum.altoslib_10.*;
 
 public class AltosBluetooth extends AltosDroidLink {
 
@@ -199,6 +199,8 @@ public class AltosBluetooth extends AltosDroidLink {
        }
 
        int write(byte[] buffer, int len) {
+               if (output == null)
+                       return -1;
                try {
                        output.write(buffer, 0, len);
                } catch (IOException ie) {
@@ -208,6 +210,8 @@ public class AltosBluetooth extends AltosDroidLink {
        }
 
        int read(byte[] buffer, int len) {
+               if (input == null)
+                       return -1;
                try {
                        return input.read(buffer, 0, len);
                } catch (IOException ie) {