diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index 459cce7..03d5d45 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/app/release/app-release.apk b/app/release/app-release.apk
index 11c52fe..63a5126 100644
Binary files a/app/release/app-release.apk and b/app/release/app-release.apk differ
diff --git a/lib/src/main/java/com/king/zxing/CaptureActivity.java b/lib/src/main/java/com/king/zxing/CaptureActivity.java
index b2a80d3..a82e226 100644
--- a/lib/src/main/java/com/king/zxing/CaptureActivity.java
+++ b/lib/src/main/java/com/king/zxing/CaptureActivity.java
@@ -178,7 +178,11 @@ public class CaptureActivity extends Activity implements SurfaceHolder.Callback
         handler = null;
         lastResult = null;
 
-        setRequestedOrientation(getCurrentOrientation());
+        if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
+            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+        } else {
+            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
+        }
 
         resetStatusView();
 
@@ -270,26 +274,26 @@ public class CaptureActivity extends Activity implements SurfaceHolder.Callback
         }
     }
 
-    private int getCurrentOrientation() {
-        int rotation = getWindowManager().getDefaultDisplay().getRotation();
-        if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
-            switch (rotation) {
-                case Surface.ROTATION_0:
-                case Surface.ROTATION_90:
-                    return ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
-                default:
-                    return ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
-            }
-        } else {
-            switch (rotation) {
-                case Surface.ROTATION_0:
-                case Surface.ROTATION_270:
-                    return ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
-                default:
-                    return ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
-            }
-        }
-    }
+//    private int getCurrentOrientation() {
+//        int rotation = getWindowManager().getDefaultDisplay().getRotation();
+//        if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
+//            switch (rotation) {
+//                case Surface.ROTATION_0:
+//                case Surface.ROTATION_90:
+//                    return ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
+//                default:
+//                    return ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
+//            }
+//        } else {
+//            switch (rotation) {
+//                case Surface.ROTATION_0:
+//                case Surface.ROTATION_270:
+//                    return ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
+//                default:
+//                    return ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
+//            }
+//        }
+//    }
 
     private static boolean isZXingURL(String dataString) {
         if (dataString == null) {
diff --git a/lib/src/main/java/com/king/zxing/InactivityTimer.java b/lib/src/main/java/com/king/zxing/InactivityTimer.java
index d42c5bf..d06b262 100644
--- a/lib/src/main/java/com/king/zxing/InactivityTimer.java
+++ b/lib/src/main/java/com/king/zxing/InactivityTimer.java
@@ -26,6 +26,7 @@ import android.os.AsyncTask;
 import android.os.BatteryManager;
 import android.util.Log;
 
+import java.lang.ref.WeakReference;
 import java.util.concurrent.RejectedExecutionException;
 
 /**
@@ -44,14 +45,14 @@ final class InactivityTimer {
 
     InactivityTimer(Activity activity) {
         this.activity = activity;
-        powerStatusReceiver = new PowerStatusReceiver();
+        powerStatusReceiver = new PowerStatusReceiver(this);
         registered = false;
         onActivity();
     }
 
     synchronized void onActivity() {
         cancel();
-        inactivityTask = new InactivityAsyncTask();
+        inactivityTask = new InactivityAsyncTask(activity);
         try {
             inactivityTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
         } catch (RejectedExecutionException ree) {
@@ -91,28 +92,49 @@ final class InactivityTimer {
         cancel();
     }
 
-    private final class PowerStatusReceiver extends BroadcastReceiver {
+    private static class PowerStatusReceiver extends BroadcastReceiver {
+
+        private WeakReference<InactivityTimer> weakReference;
+
+        public PowerStatusReceiver(InactivityTimer inactivityTimer){
+            weakReference = new WeakReference<>(inactivityTimer);
+        }
         @Override
         public void onReceive(Context context, Intent intent) {
             if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())) {
                 // 0 indicates that we're on battery
-                boolean onBatteryNow = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) <= 0;
-                if (onBatteryNow) {
-                    InactivityTimer.this.onActivity();
-                } else {
-                    InactivityTimer.this.cancel();
+
+                InactivityTimer inactivityTimer = weakReference.get();
+                if(inactivityTimer!=null){
+                    boolean onBatteryNow = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) <= 0;
+                    if (onBatteryNow) {
+                        inactivityTimer.onActivity();
+                    } else {
+                        inactivityTimer.cancel();
+                    }
                 }
+
             }
         }
     }
 
-    private final class InactivityAsyncTask extends AsyncTask<Object,Object,Object> {
+    private static class InactivityAsyncTask extends AsyncTask<Object,Object,Object> {
+
+        private WeakReference<Activity> weakReference;
+
+        public InactivityAsyncTask(Activity activity){
+            weakReference = new WeakReference<>(activity);
+        }
+
         @Override
         protected Object doInBackground(Object... objects) {
             try {
                 Thread.sleep(INACTIVITY_DELAY_MS);
                 Log.i(TAG, "Finishing activity due to inactivity");
-                activity.finish();
+                Activity activity = weakReference.get();
+                if(activity!=null){
+                    activity.finish();
+                }
             } catch (InterruptedException e) {
                 // continue without killing
             }
diff --git a/lib/src/main/java/com/king/zxing/ViewfinderView.java b/lib/src/main/java/com/king/zxing/ViewfinderView.java
index ae221cc..d1af3f1 100644
--- a/lib/src/main/java/com/king/zxing/ViewfinderView.java
+++ b/lib/src/main/java/com/king/zxing/ViewfinderView.java
@@ -132,6 +132,8 @@ public final class ViewfinderView extends View {
         textPadding = array.getDimension(R.styleable.ViewfinderView_textPadding,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,24,getResources().getDisplayMetrics()));
         textLocation = TextLocation.getFromInt(array.getInt(R.styleable.ViewfinderView_textLocation,0));
 
+        array.recycle();
+
         paint = new Paint(Paint.ANTI_ALIAS_FLAG);
         textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
         scannerAlpha = 0;
diff --git a/lib/src/main/java/com/king/zxing/camera/AutoFocusManager.java b/lib/src/main/java/com/king/zxing/camera/AutoFocusManager.java
index a599c55..d8d94d6 100644
--- a/lib/src/main/java/com/king/zxing/camera/AutoFocusManager.java
+++ b/lib/src/main/java/com/king/zxing/camera/AutoFocusManager.java
@@ -22,6 +22,7 @@ import android.os.AsyncTask;
 import android.preference.PreferenceManager;
 import android.util.Log;
 
+import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.concurrent.RejectedExecutionException;
@@ -66,7 +67,7 @@ final class AutoFocusManager implements Camera.AutoFocusCallback {
 
     private synchronized void autoFocusAgainLater() {
         if (!stopped && outstandingTask == null) {
-            AutoFocusTask newTask = new AutoFocusTask();
+            AutoFocusTask newTask = new AutoFocusTask(this);
             try {
                 newTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
                 outstandingTask = newTask;
@@ -116,7 +117,14 @@ final class AutoFocusManager implements Camera.AutoFocusCallback {
         }
     }
 
-    private final class AutoFocusTask extends AsyncTask<Object,Object,Object> {
+    private static class AutoFocusTask extends AsyncTask<Object,Object,Object> {
+
+        private WeakReference<AutoFocusManager> weakReference;
+
+        public AutoFocusTask(AutoFocusManager manager){
+            weakReference = new WeakReference<>(manager);
+        }
+
         @Override
         protected Object doInBackground(Object... voids) {
             try {
@@ -124,7 +132,10 @@ final class AutoFocusManager implements Camera.AutoFocusCallback {
             } catch (InterruptedException e) {
                 // continue
             }
-            start();
+            AutoFocusManager manager = weakReference.get();
+            if(manager!=null){
+                manager.start();
+            }
             return null;
         }
     }
diff --git a/lib/src/main/res/values/strings.xml b/lib/src/main/res/values/strings.xml
index 8095487..0a33168 100644
--- a/lib/src/main/res/values/strings.xml
+++ b/lib/src/main/res/values/strings.xml
@@ -1,3 +1,2 @@
 <resources>
-    <string name="app_name">ZXingLite</string>
 </resources>