in tablet 7-inch landscape or larger device, you setDrawerLockMode, so you can't touch in content. I think this is solution: http://derekrwoods.com/2013/09/creating-a-static-navigation-drawer-in-android/ I tried and it work for me.

Layout: I have a RecyclerView in a Fragment. This Fragment is bound to the first section of the drawer. In the RecyclerView are 50000 entries.

Problem: I can not open the drawer with the left to right swipe when I touched the RecyclerView to scroll. Since I scrolled, I have to touch the hamburger menu to open the drawer. And when it is open(and I scrolled before) I can only close it when I touch on the back button or I select a section. No swipe or no tap on the empty space on the right of the drawer.

When I opened the drawer(and I scrolled before) you can scroll the RecyclerView when you touch the space to the right of the drawer. That is the space, where you can see the RecyclerView. You can see that in the video at the end of this post. The scrollbar in the top right shows, that the RecyclerView scrolls.

To fix that problem, you have to restart the app. But with the next touch on the RecyclerView to scroll, it is broken.

I can reproduce this issue. You only have to

-create new project -implement the drawer -create a Fragment with ReycyclerView -create an adapter and a ViewHolder for the RecyclerView -in code, create a new instance of your adapter with min 100 items(so you can scroll)

Edit: The problem is the ListView. So, it doesn't react whith ListView and RecyclerView(extends from ListView).

Tested on Nexus 6, Nexus 6 emulator and Note 2. Demo on Note 2: https://www.youtube.com/watch?v=qSNQ5B5HT60

These are images from the sample than im testing: When the app is in portrait mode works fine but when changes to landscape the menu is shown but when it hides the fragment within don't resize.

https://www.dropbox.com/sh/x4jg0cdp27o67q2/AACUXEUyOpqWU3X_onoizkuPa?dl=0

When running the app on my smartphone (galaxy S5), A crash happens because of an out of memory error. This error always happens at init function, when running the MaterialAccount constructor, at the stage of loading the navigation drawer background photo. The crash happens while doing one of the following:

1. When rotating the phone to landscape mode.
2. When exiting the app with back button and starting the app again

Using memory monitor in Android studio, memory usage goes up to 200Mb, then the crash happens.

I think the reason for the crash is allocating too much memory for the Bitmaps. When rotating the phone, or exiting, then re-entring, it might be the garbage collector didn't dispose all the bitmaps that was allocated before (when previously running the MaterialAccount constructors), thus causing the crash when allocating again.

I think 2 steps might help here:

1. Dispose allocated memory with nulling the pointer in "onStop()"
2. Better manage bitmaps

The following docs can help here:

1. https://developer.android.com/training/articles/memory.html which also mention to "Avoid wasting memory with bitmaps".
2. https://developer.android.com/training/displaying-bitmaps/manage-memory.html

There are apps that don't need a user to be logged in. In such case, in "account area" there is just a text of a size "abc_text_size_headline_material" - usually by def white, with some background, usually only a color (accent in some apps). Nothing else, pretty simple.

Hi! I noticed that Android can't resize the activity when SoftKeyboard is opened if I'm using your DrawerTheme. All works fine with Lollipop's default theme (applied in styles.xml).

Activity with default theme:

Activity with MyNavigationDrawerTheme: EditText is below the Soft Keyboard, so the activity wasn't resized.

Best regards, Paolo

Hi,

First, I want to thank you for doing such a great work. This lib is great and helps a lot. I encountered few issues when using back button, Please take a look at the following if possible:

1. If I exit the app with back button, the next time I start the app causes a crash
2. Using back button will exit the app, instead of getting back to the previous screen (in google apps, the behavior is to get back to the main screen, then another "back" press leads to app exit)
3. Opening a new fragment from the drawer (like settings fragment), then hitting back, will cause us to get back to the previous screen as it should, however, the selected list item will still be settings, instead of the previous item selected.

One more small issue here, not related to back button, is RTL support. It will be nice to have this feature (explained at http://android-developers.blogspot.co.il/2013/03/native-rtl-support-in-android-42.html). Essentialy, there are two steps involved: adding android:supportsRtl="true" to the element in manifest file and changing (or adding if min sdk is lower than 17) "start" instead of "left" and "end" instead of right.

Thanks again, Yaniv

Hello, I got a NullPointerException after I return in activiity that extends MaterialNavigationDrawer

Caused by: java.lang.NullPointerException at it.neokree.materialnavigationdrawer.MaterialNavigationDrawer.onCreate(MaterialNavigationDrawer.java:678) at android.app.Activity.performCreate(Activity.java:5372) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)             at android.app.ActivityThread.access$700(ActivityThread.java:159)             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)             at android.os.Handler.dispatchMessage(Handler.java:99)             at android.os.Looper.loop(Looper.java:176)             at android.app.ActivityThread.main(ActivityThread.java:5419)             at java.lang.reflect.Method.invokeNative(Native Method)             at java.lang.reflect.Method.invoke(Method.java:525)             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)             at dalvik.system.NativeStart.main(Native Method)

Hello. Is there a possibility to use this lib with master/detail on tablets? I want to have 2 panes in normal and 3 in existing multipane mode. Thanks!

Hello again, I implemented your library mostly successfully (thanks, you are doing a great job btw) but when I replace the FragmentIndex of your example with 3 different fragments, what I see is that the fragments overlap? So I can still see fragment1 when I should only see fragment2. You don't see that in your example code because your fragments are all instances of FragmentIndex, so they are identical. In your implementation, are the fragments added, or are they replacing previous fragments?

thanks for the clarification!

Hi Folks,

I get the following exception when changing to another section from a child section:

java.lang.IndexOutOfBoundsException
            at java.util.LinkedList.remove(LinkedList.java:660)
            at it.neokree.materialnavigationdrawer.MaterialNavigationDrawer.setFragment(MaterialNavigationDrawer.java:968)

My code to change to a section is as following:

public void selectSection(final Class<? extends BaseFragment> targetFragmentClazz) {
        final MaterialSection currentSection = getCurrentSection();
        final MaterialSection targetSection = getSection(targetFragmentClazz);
        currentSection.unSelect();
        setFragment(targetSection.getTargetFragment(), targetSection.getTitle());
        setSection(targetSection);
        targetSection.select();
    }

Edit:

After doing some investigation, it seems to me that the problem is here in this line ' else for(int i = childFragmentStack.size()-1;i >= 0;i++)' in the following method:

/**
     * Set the fragment to the activity content.<br />
     * N.B. If you want to support the master/child flow, please consider to use setFragmentChild instead
     *
     * @param fragment to replace into the main content
     * @param title to set into Toolbar
     */
    public void setFragment(Fragment fragment,String title) {
        setFragment(fragment,title,null);

        if(!isCurrentFragmentChild) {// remove the last child from the stack
            childFragmentStack.remove(childFragmentStack.size() - 1);
            childTitleStack.remove(childTitleStack.size() - 1);
        }
        else for(int i = childFragmentStack.size()-1;i >= 0;i++) { // if a section is clicked when user is into a child remove all childs from stack
            childFragmentStack.remove(i);
            childTitleStack.remove(i);
        }

        // add to the childStack the Fragment and title
        childFragmentStack.add(fragment);
        childTitleStack.add(title);

        isCurrentFragmentChild = false;
    }

Perhaps the loop need to be:

 for(int i = childFragmentStack.size()-1;i >= 0;i--)

I want to add a number besides a fragment name. In the demo picture you shows that there have a number. but i can't find it how to put number.

In the normal sliding menu we can use admob ad for all fragment. but if i used this how i can show admob ad??

I'd like to change the header background. From what I saw in the library, it only considers images...I don't want to use an image, I just want to have a different color at the header layout i.e a header layout with red color and sections layout with white color.. How do I accomplish that ??

Im new to android, and I am downloding it and enter the dependencies in androidmanifest.xml and replace all your main folder files with my new project file but it is not working please tell some suggestion.

Hello, I would like to know how to change the font size, I'm using a tablet 7 "I think the letter is very small. Give thanks for the Neokree the library, help me a lot.

can i change section title color as programmatical way ? not from style i cannot found method for changing sectionTextColor() please help @neokree :)