新增onClickFlashlight方法

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

@@ -65,13 +65,20 @@ public class CaptureActivity extends AppCompatActivity implements CameraScan.OnS
         if(ivFlashlightId != 0){
             ivFlashlight = findViewById(ivFlashlightId);
             if(ivFlashlight != null){
-                ivFlashlight.setOnClickListener(v -> toggleTorchState());
+                ivFlashlight.setOnClickListener(v -> onClickFlashlight());
             }
         }
         initCameraScan();
         startCamera();
     }
 
+    /**
+     * 点击手电筒
+     */
+    protected void onClickFlashlight(){
+        toggleTorchState();
+    }
+
     /**
      * 初始化CameraScan
      */

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

@@ -78,13 +78,20 @@ public class CaptureFragment extends Fragment implements CameraScan.OnScanResult
         if(ivFlashlightId != 0){
             ivFlashlight = mRootView.findViewById(ivFlashlightId);
             if(ivFlashlight != null){
-                ivFlashlight.setOnClickListener(v -> toggleTorchState());
+                ivFlashlight.setOnClickListener(v -> onClickFlashlight());
             }
         }
         initCameraScan();
         startCamera();
     }
 
+    /**
+     * 点击手电筒
+     */
+    protected void onClickFlashlight(){
+        toggleTorchState();
+    }
+
     /**
      * 初始化CameraScan
      */