Avoid weird NPE and don't obfuscate anymore -- no need

git-svn-id: https://zxing.googlecode.com/svn/trunk@2698 59b500cc-1b3d-0410-9834-0bbf25fbcc57

android/proguard-android-optimize.txt

@@ -32,6 +32,10 @@
 #-keep class com.google.zxing.client.android.camera.exposure.**
 -keep class com.google.zxing.client.android.common.executor.**
 
+# ADDED 
+-dontobfuscate
+-useuniqueclassmembernames
+
 # For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
 -keepclasseswithmembernames class * {
     native <methods>;

android/src/com/google/zxing/client/android/CaptureActivity.java

@@ -479,11 +479,13 @@ public final class CaptureActivity extends Activity implements SurfaceHolder.Cal
   }
 
   private static void drawLine(Canvas canvas, Paint paint, ResultPoint a, ResultPoint b, float scaleFactor) {
-    canvas.drawLine(scaleFactor * a.getX(), 
-                    scaleFactor * a.getY(), 
-                    scaleFactor * b.getX(), 
-                    scaleFactor * b.getY(), 
-                    paint);
+    if (a != null && b != null) {
+      canvas.drawLine(scaleFactor * a.getX(), 
+                      scaleFactor * a.getY(), 
+                      scaleFactor * b.getX(), 
+                      scaleFactor * b.getY(), 
+                      paint);
+    }
   }
 
   // Put up our own UI for how to handle the decoded contents.