Fixed back navigation; Both hardware and action bar back buttons

src/de/tudarmstadt/informatik/hostage/ui2/activity/MainActivity.java

@@ -298,7 +298,11 @@ public class MainActivity extends Activity {
 
 		if(item.getItemId() == android.R.id.home){
 			if(!mDrawerToggle.isDrawerIndicatorEnabled()){
-				if(getFragmentManager().getBackStackEntryCount() > 0) getFragmentManager().popBackStack();
+				if(getFragmentManager().getBackStackEntryCount() > 0) {
+					getFragmentManager().popBackStackImmediate();
+					this.mDisplayedFragment = getFragmentManager().findFragmentById(R.id.content_frame);
+					this.mInvalidMenuItem = true;
+				}
 
 				if(getCurrentFragment().getTag() != null) mDrawerToggle.setDrawerIndicatorEnabled(true);
 				return true;
@@ -408,9 +412,9 @@ public class MainActivity extends Activity {
 		injectFragment(fragment, enableBack, null);
 	}
 
-	private void injectFragment(Fragment fragment, boolean enableBack, Object tagObj){
+	public void injectFragment(Fragment fragment, boolean enableBack, Object tagObj){
 		if(enableBack){
-			//mDrawerToggle.setDrawerIndicatorEnabled(false);
+			mDrawerToggle.setDrawerIndicatorEnabled(false);
 		}
 
 		String tag = (tagObj == null ? null : tagObj.toString());
@@ -419,7 +423,7 @@ public class MainActivity extends Activity {
 		FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
 		fragmentTransaction.replace(R.id.content_frame, fragment, tag);
 
-		if(tagObj == null || !(fragmentManager.getBackStackEntryCount() == 0 && tagObj.equals(MainMenuItem.HOME))) fragmentTransaction.addToBackStack(tag);
+		fragmentTransaction.addToBackStack(tag);
 
 		fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
 		fragmentTransaction.commit();
@@ -433,8 +437,14 @@ public class MainActivity extends Activity {
 
 	@Override
 	public void onBackPressed() {
-		super.onBackPressed();
-		//if(getCurrentFragment().getTag() != null) mDrawerToggle.setDrawerIndicatorEnabled(true);
+		if(getFragmentManager().getBackStackEntryCount() == 1) {
+			finish();
+		} else {
+			super.onBackPressed();
+			this.mDisplayedFragment = getFragmentManager().findFragmentById(R.id.content_frame);
+			this.mInvalidMenuItem = true;
+			if(getCurrentFragment().getTag() != null) mDrawerToggle.setDrawerIndicatorEnabled(true);
+		}
 	}
 
 	public static void displayBackStack(FragmentManager fm) {

src/de/tudarmstadt/informatik/hostage/ui2/fragment/ConnectionInfoDialogFragment.java

@@ -59,7 +59,7 @@ public class ConnectionInfoDialogFragment extends DialogFragment {
 				recordOverviewFragment.setFilter(filter);
 				recordOverviewFragment.setGroupKey("ESSID");
 
-				MainActivity.getInstance().injectFragment(recordOverviewFragment, false);
+				MainActivity.getInstance().injectFragment(recordOverviewFragment, false, MainActivity.MainMenuItem.RECORDS);
 			}
 		});
 		builder.setNegativeButton(R.string.close, null);