支持识别反色码（#66,#72）

app/src/main/java/com/king/zxing/app/CustomActivity.java

@@ -64,6 +64,7 @@ public class CustomActivity extends AppCompatActivity implements OnCaptureCallba
         mCaptureHelper.vibrate(true)
                 .fullScreenScan(true)//全屏扫码
                 .supportVerticalCode(true)//支持扫垂直条码，建议有此需求时才使用。
+                .supportLuminanceInvert(true)//是否支持识别反色码（黑白反色的码），增加识别率
                 .continuousScan(isContinuousScan);
 
     }

app/src/main/java/com/king/zxing/app/CustomCaptureActivity.java

@@ -58,7 +58,8 @@ public class CustomCaptureActivity extends CaptureActivity {
                 .frontLightMode(FrontLightMode.AUTO)//设置闪光灯模式
                 .tooDarkLux(45f)//设置光线太暗时，自动触发开启闪光灯的照度值
                 .brightEnoughLux(100f)//设置光线足够明亮时，自动触发关闭闪光灯的照度值
-                .continuousScan(isContinuousScan);//是否连扫
+                .continuousScan(isContinuousScan)//是否连扫
+                .supportLuminanceInvert(true);//是否支持识别反色码（黑白反色的码），增加识别率
     }
 
 

lib/src/main/java/com/king/zxing/CaptureActivity.java

@@ -15,10 +15,10 @@
  */
 package com.king.zxing;
 
-import android.app.Activity;
 import android.os.Bundle;
 import android.support.annotation.LayoutRes;
 import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
 import android.view.MotionEvent;
 import android.view.SurfaceView;
 import android.view.View;
@@ -26,7 +26,7 @@ import android.view.View;
 import com.king.zxing.camera.CameraManager;
 
 
-public class CaptureActivity extends Activity implements OnCaptureCallback{
+public class CaptureActivity extends AppCompatActivity implements OnCaptureCallback{
 
     public static final String KEY_RESULT = Intents.Scan.RESULT;
 
@@ -113,9 +113,10 @@ public class CaptureActivity extends Activity implements OnCaptureCallback{
     }
 
     /**
-     * Get {@link CameraManager}
+     * Get {@link CameraManager} use {@link #getCaptureHelper()#getCameraManager()}
      * @return {@link #mCaptureHelper#getCameraManager()}
      */
+    @Deprecated
     public CameraManager getCameraManager(){
         return mCaptureHelper.getCameraManager();
     }

lib/src/main/java/com/king/zxing/CaptureFragment.java

@@ -126,9 +126,10 @@ public class CaptureFragment extends Fragment implements OnCaptureCallback {
     }
 
     /**
-     * Get {@link CameraManager}
+     * Get {@link CameraManager} use {@link #getCaptureHelper()#getCameraManager()}
      * @return {@link #mCaptureHelper#getCameraManager()}
      */
+    @Deprecated
     public CameraManager getCameraManager(){
         return mCaptureHelper.getCameraManager();
     }

lib/src/main/java/com/king/zxing/CaptureHandler.java

@@ -49,6 +49,11 @@ public class CaptureHandler extends Handler implements ResultPointCallback {
      */
     private boolean isSupportAutoZoom;
 
+    /**
+     *
+     */
+    private boolean isSupportLuminanceInvert;
+
 
     private enum State {
         PREVIEW,
@@ -198,4 +203,12 @@ public class CaptureHandler extends Handler implements ResultPointCallback {
     public void setSupportAutoZoom(boolean supportAutoZoom) {
         isSupportAutoZoom = supportAutoZoom;
     }
+
+    public boolean isSupportLuminanceInvert() {
+        return isSupportLuminanceInvert;
+    }
+
+    public void setSupportLuminanceInvert(boolean supportLuminanceInvert) {
+        isSupportLuminanceInvert = supportLuminanceInvert;
+    }
 }

lib/src/main/java/com/king/zxing/CaptureHelper.java

@@ -86,6 +86,11 @@ public class CaptureHelper implements CaptureLifecycle,CaptureTouchEvent,Capture
      */
     private boolean isSupportAutoZoom = true;
 
+    /**
+     * 是否支持识别颜色反转色的码，黑白颜色反转，默认不支持
+     */
+    private boolean isSupportLuminanceInvert = false;
+
     /**
      * 是否支持连扫，默认不支持
      */
@@ -333,6 +338,7 @@ public class CaptureHelper implements CaptureLifecycle,CaptureTouchEvent,Capture
                 captureHandler.setSupportVerticalCode(isSupportVerticalCode);
                 captureHandler.setReturnBitmap(isReturnBitmap);
                 captureHandler.setSupportAutoZoom(isSupportAutoZoom);
+                captureHandler.setSupportLuminanceInvert(isSupportLuminanceInvert);
             }
         } catch (IOException ioe) {
             Log.w(TAG, ioe);
@@ -717,9 +723,22 @@ public class CaptureHelper implements CaptureLifecycle,CaptureTouchEvent,Capture
         return this;
     }
 
+    /**
+     * 是否支持识别反色码，黑白颜色反转
+     * @param supportLuminanceInvert 默认为false，当返回true时表示支持，会增加识别率，但相应的也会增加性能消耗。
+     * @return
+     */
+    public CaptureHelper supportLuminanceInvert(boolean supportLuminanceInvert) {
+        isSupportLuminanceInvert = supportLuminanceInvert;
+        if(captureHandler!=null){
+            captureHandler.setSupportLuminanceInvert(isSupportLuminanceInvert);
+        }
+        return this;
+    }
+
     /**
      * 设置是否支持全屏扫码识别
-     * @param fullScreenScan
+     * @param fullScreenScan 默认为false
      * @return
      */
     public CaptureHelper fullScreenScan(boolean fullScreenScan) {

lib/src/main/java/com/king/zxing/DecodeHandler.java

@@ -102,31 +102,50 @@ final class DecodeHandler extends Handler {
         PlanarYUVLuminanceSource source = buildPlanarYUVLuminanceSource(data,width,height,isScreenPortrait);
 
         if (source != null) {
-            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-            try {
-                rawResult = multiFormatReader.decodeWithState(bitmap);
-            } catch (Exception e) {
-                BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
-                try{
-                    rawResult = multiFormatReader.decodeWithState(bitmap1);
-                }catch (Exception e1){
-                    if(isSupportVerticalCode){
-                        source = buildPlanarYUVLuminanceSource(data,width,height,!isScreenPortrait);
-                        if(source!=null){
-                            BinaryBitmap bitmap2 = new BinaryBitmap(new HybridBinarizer(source));
-                            try{
-                                rawResult = multiFormatReader.decodeWithState(bitmap2);
-                            }catch (Exception e2){
 
-                            }
+            boolean isReDecode;
-                        }
+            try {
+                BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
+                rawResult = multiFormatReader.decodeWithState(bitmap);
+                isReDecode = false;
+            } catch (Exception e) {
+                isReDecode = true;
+            }
+
+            if(isReDecode && handler.isSupportLuminanceInvert()){
+                try {
+                    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source.invert()));
+                    rawResult = multiFormatReader.decodeWithState(bitmap);
+                    isReDecode = false;
+                } catch (Exception e) {
+                    isReDecode = true;
+                }
+            }
+
+            if(isReDecode){
+                try{
+                    BinaryBitmap bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
+                    rawResult = multiFormatReader.decodeWithState(bitmap);
+                    isReDecode = false;
+                }catch (Exception e){
+                    isReDecode = true;
+                }
+            }
+
+            if(isReDecode && isSupportVerticalCode){
+                source = buildPlanarYUVLuminanceSource(data,width,height,!isScreenPortrait);
+                if(source!=null){
+                    try{
+                        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
+                        rawResult = multiFormatReader.decodeWithState(bitmap);
+                    }catch (Exception e){
 
                     }
                 }
 
-            } finally {
-                multiFormatReader.reset();
             }
+
+            multiFormatReader.reset();
         }
 
         if (rawResult != null) {
@@ -157,7 +176,6 @@ final class DecodeHandler extends Handler {
                     }
                 }
 
-
             }
 
             if (handler != null) {
@@ -211,7 +229,7 @@ final class DecodeHandler extends Handler {
             return true;
         }
 
-        if(length<width/5){
+        if(length < width/ 5){
 
             Camera camera = cameraManager.getOpenCamera().getCamera();
             if(camera!=null){