Flag secure in all activities that extends BaseActionBarActivity

Closes #4152
Fixes #3327

src/org/thoughtcrime/securesms/BaseActionBarActivity.java

@@ -14,8 +14,11 @@ import android.util.Log;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
+import android.view.WindowManager;
 import android.view.animation.AnimationUtils;
 
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
+
 import java.lang.reflect.Field;
 
 
@@ -30,6 +33,12 @@ public abstract class BaseActionBarActivity extends AppCompatActivity {
     super.onCreate(savedInstanceState);
   }
 
+  @Override
+  protected void onResume() {
+    super.onResume();
+    initializeScreenshotSecurity();
+  }
+
   @Override
   public boolean onKeyDown(int keyCode, KeyEvent event) {
     return (keyCode == KeyEvent.KEYCODE_MENU && BaseActivity.isMenuWorkaroundRequired()) || super.onKeyDown(keyCode, event);
@@ -44,6 +53,16 @@ public abstract class BaseActionBarActivity extends AppCompatActivity {
     return super.onKeyUp(keyCode, event);
   }
 
+  private void initializeScreenshotSecurity() {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH &&
+            TextSecurePreferences.isScreenSecurityEnabled(this))
+    {
+      getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
+    } else {
+      getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
+    }
+  }
+
   /**
    * Modified from: http://stackoverflow.com/a/13098824
    */

src/org/thoughtcrime/securesms/PassphraseRequiredActionBarActivity.java

@@ -56,7 +56,6 @@ public abstract class PassphraseRequiredActionBarActivity extends BaseActionBarA
   protected void onResume() {
     Log.w(TAG, "onResume()");
     super.onResume();
-    initializeScreenshotSecurity();
     KeyCachingService.registerPassphraseActivityStarted(this);
     MessageRetrievalService.registerActivityStarted(this);
     isVisible = true;
@@ -193,16 +192,6 @@ public abstract class PassphraseRequiredActionBarActivity extends BaseActionBarA
     return new Intent(this, ConversationListActivity.class);
   }
 
-  private void initializeScreenshotSecurity() {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH &&
-        TextSecurePreferences.isScreenSecurityEnabled(this))
-    {
-      getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
-    } else {
-      getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
-    }
-  }
-
   private void initializeClearKeyReceiver() {
     Log.w(TAG, "initializeClearKeyReceiver()");
     this.clearKeyReceiver = new BroadcastReceiver() {