SnapdragonCamera: Fix camera can`t enter setting in pattern lock

RootCause:
    Missing flag of WindowManager.LayoutParames in
SettingsActivity.java and SceneModeActivity.java.
Solution:
(1) Add windowManager.LayoutParams.FLAG_SHOW_WHEN
    _LOCKED in SettingsActivity.java and SceneModeActivity.java.
(2) Change SettingsManager`s single instance, and guarantee
    SettingsManager only one instance.
(3) When SettingsActivity.java and SceneModeActivity.java is
    invisible status, finish them and ensure data is updated
    in a timely manner.

Change-Id: I3ac24b9b181055382849550e585d3be726e71595
CRs-Fixed: 1084871

7 files changed, 47 insertions, 7 deletions

diff --git a/src/com/android/camera/CameraActivity.java b/src/com/android/camera/CameraActivity.java
index 98fddcbe8..d8444fb7e 100644
--- a/src/com/android/camera/CameraActivity.java
+++ b/src/com/android/camera/CameraActivity.java
@@ -1486,8 +1486,6 @@ public class CameraActivity extends Activity
 
         getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
 
-        SettingsManager.createInstance(this);
-
         LayoutInflater inflater = getLayoutInflater();
         View rootLayout = inflater.inflate(R.layout.camera, null, false);
         mCameraRootFrame = (FrameLayout)rootLayout.findViewById(R.id.camera_root_frame);
@@ -1829,10 +1827,6 @@ public class CameraActivity extends Activity
             mWakeLock.release();
             Log.d(TAG, "wake lock release");
         }
-        SettingsManager settingsMngr = SettingsManager.getInstance();
-        if (settingsMngr != null) {
-            settingsMngr.destroyInstance();
-        }
         if (mCursor != null) {
             getContentResolver().unregisterContentObserver(mLocalImagesObserver);
             getContentResolver().unregisterContentObserver(mLocalVideosObserver);
diff --git a/src/com/android/camera/CaptureUI.java b/src/com/android/camera/CaptureUI.java
index ae67007d0..4866a6b6a 100644
--- a/src/com/android/camera/CaptureUI.java
+++ b/src/com/android/camera/CaptureUI.java
@@ -526,6 +526,7 @@ public class CaptureUI implements FocusOverlayManager.FocusUI,
                 clearFocus();
                 removeFilterMenu(false);
                 Intent intent = new Intent(mActivity, SceneModeActivity.class);
+                intent.putExtra(CameraUtil.KEY_IS_SECURE_CAMERA, mActivity.isSecureCamera());
                 mActivity.startActivity(intent);
             }
         });
diff --git a/src/com/android/camera/SceneModeActivity.java b/src/com/android/camera/SceneModeActivity.java
index 09ad391c1..9e0e59506 100644
--- a/src/com/android/camera/SceneModeActivity.java
+++ b/src/com/android/camera/SceneModeActivity.java
@@ -38,6 +38,8 @@ import android.support.v4.view.ViewPager;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.Window;
+import android.view.WindowManager;
 import android.widget.AdapterView;
 import android.widget.BaseAdapter;
 import android.widget.GridView;
@@ -49,6 +51,7 @@ import org.codeaurora.snapcam.R;
 import com.android.camera.ui.DotsView;
 import com.android.camera.ui.DotsViewItem;
 import com.android.camera.ui.RotateImageView;
+import com.android.camera.util.CameraUtil;
 
 public class SceneModeActivity extends Activity {
     private ViewPager mPager;
@@ -86,6 +89,11 @@ public class SceneModeActivity extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        final boolean isSecureCamera = getIntent().getBooleanExtra(
+                CameraUtil.KEY_IS_SECURE_CAMERA, false);
+        if (isSecureCamera) {
+            setShowInLockScreen();
+        }
         setContentView(R.layout.scene_mode_menu_layout);
         mSettingsManager = SettingsManager.getInstance();
 
@@ -137,6 +145,7 @@ public class SceneModeActivity extends Activity {
             @Override
             public void onClick(View v) {
                 Intent intent = new Intent(getBaseContext(), SettingsActivity.class);
+                intent.putExtra(CameraUtil.KEY_IS_SECURE_CAMERA, isSecureCamera);
                 startActivity(intent);
                 finish();
             }
@@ -171,6 +180,20 @@ public class SceneModeActivity extends Activity {
     public int getCurrentScene() {
         return mCurrentScene;
     }
+
+    private void setShowInLockScreen() {
+        // 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);
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        finish();
+    }
 }
 
 class MyPagerAdapter extends PagerAdapter {
diff --git a/src/com/android/camera/SettingsActivity.java b/src/com/android/camera/SettingsActivity.java
index 32c6b5cad..d4f5ac13a 100644
--- a/src/com/android/camera/SettingsActivity.java
+++ b/src/com/android/camera/SettingsActivity.java
@@ -39,10 +39,13 @@ import android.preference.PreferenceGroup;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceManager;
 import android.preference.SwitchPreference;
+import android.view.Window;
+import android.view.WindowManager;
 import android.util.Log;
 import android.widget.Toast;
 
 import org.codeaurora.snapcam.R;
+import com.android.camera.util.CameraUtil;
 
 import java.util.List;
 import java.util.Map;
@@ -86,6 +89,11 @@ public class SettingsActivity extends PreferenceActivity {
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        final boolean isSecureCamera = getIntent().getBooleanExtra(
+                CameraUtil.KEY_IS_SECURE_CAMERA, false);
+        if (isSecureCamera) {
+            setShowInLockScreen();
+        }
         mSettingsManager = SettingsManager.getInstance();
         addPreferencesFromResource(R.xml.setting_menu_preferences);
 
@@ -213,5 +221,14 @@ public class SettingsActivity extends PreferenceActivity {
     protected void onStop() {
         super.onStop();
         mSharedPreferences.unregisterOnSharedPreferenceChangeListener(mSharedPreferenceChangeListener);
+        finish();
+    }
+
+    private void setShowInLockScreen() {
+        // 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);
     }
 }
\ No newline at end of file
diff --git a/src/com/android/camera/SettingsManager.java b/src/com/android/camera/SettingsManager.java
index e076b3824..051f5db09 100644
--- a/src/com/android/camera/SettingsManager.java
+++ b/src/com/android/camera/SettingsManager.java
@@ -55,6 +55,7 @@ import com.android.camera.imageprocessor.filter.UbifocusFilter;
 import com.android.camera.ui.ListMenu;
 import com.android.camera.ui.PanoCaptureProcessView;
 import com.android.camera.util.SettingTranslation;
+import com.android.camera.app.CameraApp;
 
 import org.codeaurora.snapcam.R;
 import org.json.JSONException;
@@ -193,7 +194,7 @@ public class SettingsManager implements ListMenu.SettingsListener {
 
     public static SettingsManager createInstance(Context context) {
         if (sInstance == null) {
-            sInstance = new SettingsManager(context);
+            sInstance = new SettingsManager(context.getApplicationContext());
         }
         return sInstance;
     }
diff --git a/src/com/android/camera/app/CameraApp.java b/src/com/android/camera/app/CameraApp.java
index b46d615b0..837e22cd1 100644
--- a/src/com/android/camera/app/CameraApp.java
+++ b/src/com/android/camera/app/CameraApp.java
@@ -22,6 +22,7 @@ import android.app.Application;
 import com.android.camera.SDCard;
 import com.android.camera.util.CameraUtil;
 import com.android.camera.util.UsageStatistics;
+import com.android.camera.SettingsManager;
 
 public class CameraApp extends Application {
     private static long mMaxSystemMemory;
@@ -37,6 +38,7 @@ public class CameraApp extends Application {
         if(mMaxSystemMemory <= LOW_MEMORY_DEVICE_THRESHOLD) {
             mIsLowMemoryDevice = true;
         }
+        SettingsManager.createInstance(this);
         UsageStatistics.initialize(this);
         CameraUtil.initialize(this);
         SDCard.initialize(this);
diff --git a/src/com/android/camera/util/CameraUtil.java b/src/com/android/camera/util/CameraUtil.java
index 1cdfd285a..28cb8e3b2 100644
--- a/src/com/android/camera/util/CameraUtil.java
+++ b/src/com/android/camera/util/CameraUtil.java
@@ -124,6 +124,8 @@ public class CameraUtil {
 
     /** Has to be in sync with the receiving MovieActivity. */
     public static final String KEY_TREAT_UP_AS_BACK = "treat-up-as-back";
+    /** Judge the value whether is from lockscreen come in or not */
+    public static final String KEY_IS_SECURE_CAMERA = "is_secure_camera";
 
     public static final int RATIO_UNKNOWN = 0;
     public static final int RATIO_16_9 = 1;