Use nanoTime for elapsed time

zxing · Feb 10, 2019 · 096cae7 · 096cae7
1 parent fc5774f
commit 096cae7
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/android/src/com/google/zxing/client/android/DecodeHandler.java b/android/src/com/google/zxing/client/android/DecodeHandler.java
@@ -33,6 +33,7 @@
 
 import java.io.ByteArrayOutputStream;
 import java.util.Map;
+import java.util.concurrent.TimeUnit;
 
 final class DecodeHandler extends Handler {
 
@@ -73,7 +74,7 @@ public void handleMessage(Message message) {
    * @param height The height of the preview frame.
    */
   private void decode(byte[] data, int width, int height) {
-    long start = System.currentTimeMillis();
+    long start = System.nanoTime();
     Result rawResult = null;
     PlanarYUVLuminanceSource source = activity.getCameraManager().buildLuminanceSource(data, width, height);
     if (source != null) {
@@ -90,8 +91,8 @@ private void decode(byte[] data, int width, int height) {
     Handler handler = activity.getHandler();
     if (rawResult != null) {
       // Don't log the barcode contents for security.
-      long end = System.currentTimeMillis();
-      Log.d(TAG, "Found barcode in " + (end - start) + " ms");
+      long end = System.nanoTime();
+      Log.d(TAG, "Found barcode in " + TimeUnit.NANOSECONDS.toMillis(end - start) + " ms");
       if (handler != null) {
         Message message = Message.obtain(handler, R.id.decode_succeeded, rawResult);
         Bundle bundle = new Bundle();