Snap: Allow quickreader to work with secure device

* Mimic the behaviour from CameraActivity to allow using the quickreader
  activity with locked screen
* Pass the value if mSecureCamera as SECURE_CAMERA_EXTRA flag to get
  knowledge if the WindowManager flags have to be modified
* Also tested: Scanning an url doesn't allow bypassing the lockscreen, so
  it's only the reader itself which will work with a locked device

Change-Id: Ia9da7b712f5e5aab32a49d272e3d42651dee412d

2 files changed, 16 insertions, 2 deletions

diff --git a/quickReader/src/org/lineageos/quickreader/ScannerActivity.java b/quickReader/src/org/lineageos/quickreader/ScannerActivity.java
index fb583a24a..7ee6be2c6 100644
--- a/quickReader/src/org/lineageos/quickreader/ScannerActivity.java
+++ b/quickReader/src/org/lineageos/quickreader/ScannerActivity.java
@@ -27,6 +27,8 @@ import android.provider.Settings;
 import android.text.TextUtils;
 import android.util.Log;
 import android.util.Patterns;
+import android.view.Window;
+import android.view.WindowManager;
 import android.webkit.URLUtil;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
@@ -54,6 +56,8 @@ public class ScannerActivity extends Activity implements ZXingScannerView.Result
                     "(.*)"
     );
 
+    public static final String SECURE_CAMERA_EXTRA = "secure_camera";
+
     private static ScannerIntentHelper sHelper;
 
     private AnalyzeTask task;
@@ -69,6 +73,15 @@ public class ScannerActivity extends Activity implements ZXingScannerView.Result
     protected void onCreate(Bundle savedInstance) {
         super.onCreate(savedInstance);
 
+        Intent intent = getIntent();
+        if (intent.getBooleanExtra(SECURE_CAMERA_EXTRA, false)) {
+            // Change the window flags so that secure camera can show when locked
+            Window win = getWindow();
+            WindowManager.LayoutParams params = win.getAttributes();
+            params.flags |= WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
+            win.setAttributes(params);
+        }
+
         setContentView(R.layout.activity_scanner);
 
         mScanView = (ZXingScannerView) findViewById(R.id.scanner_view);
diff --git a/src/com/android/camera/CameraActivity.java b/src/com/android/camera/CameraActivity.java
index 29a5cdb01..74e1a7ff3 100644
--- a/src/com/android/camera/CameraActivity.java
+++ b/src/com/android/camera/CameraActivity.java
@@ -2144,8 +2144,9 @@ public class CameraActivity extends Activity
     @Override
     public void onModuleSelected(int moduleIndex) {
         if (moduleIndex == ModuleSwitcher.QR_MODULE_INDEX) {
-            startActivity(new Intent(this, ScannerActivity.class));
-            finish();
+            Intent intent = new Intent(this, ScannerActivity.class);
+            intent.putExtra(SECURE_CAMERA_EXTRA, mSecureCamera);
+            startActivity(intent);
             return;
         }