From 8518e8c4205f2aebffd7bbdcf6964b6f828ab54f Mon Sep 17 00:00:00 2001
From: Terry May <terry@detroitlabs.com>
Date: Wed, 14 Nov 2012 12:47:21 -0500
Subject: [PATCH] added check to autofocus handler to know if the activity is
 complete or not.  this prevents an autofocus exception.

---
 .../com/dm/zbar/android/scanner/ZBarScannerActivity.java   | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/ZBarScannerLibrary/src/com/dm/zbar/android/scanner/ZBarScannerActivity.java b/ZBarScannerLibrary/src/com/dm/zbar/android/scanner/ZBarScannerActivity.java
index c9e2f4f..086a066 100644
--- a/ZBarScannerLibrary/src/com/dm/zbar/android/scanner/ZBarScannerActivity.java
+++ b/ZBarScannerLibrary/src/com/dm/zbar/android/scanner/ZBarScannerActivity.java
@@ -21,7 +21,8 @@ public class ZBarScannerActivity extends Activity implements Camera.PreviewCallb
     private Camera mCamera;
     private ImageScanner mScanner;
     private Handler mAutoFocusHandler;
-
+    private boolean complete;
+    
     static {
         System.loadLibrary("iconv");
     }
@@ -94,7 +95,7 @@ public void onPreviewFrame(byte[] data, Camera camera) {
         if (result != 0) {
             mCamera.setPreviewCallback(null);
             mCamera.stopPreview();
-
+            complete = true;
             SymbolSet syms = mScanner.getResults();
             for (Symbol sym : syms) {
                 String symData = sym.getData();
@@ -111,7 +112,7 @@ public void onPreviewFrame(byte[] data, Camera camera) {
     }
     private Runnable doAutoFocus = new Runnable() {
         public void run() {
-            if(mCamera != null) {
+            if(mCamera != null && !complete) {
                 mCamera.autoFocus(autoFocusCB);
             }
         }