Materialdrawer: Hamburger icon

[davix10]

Hi, I would like to see only the Hamburger icon but my app crashes. I used this theme Theme.AppCompat.Light.DarkActionBar.
how can I do?
Thanks.

[AngleV]

@davix10 post your logcat
With such a few info we can't help you.

[davix10]

I'm sorry @AngleV, this is my logcat:

Process: com.example.torch.livetools, PID: 11706
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.torch.livetools/com.example.torch.livetools.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBarDrawerToggle.setDrawerIndicatorEnabled(boolean)' on a null object reference
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2431)
            at android.app.ActivityThread.access$900(ActivityThread.java:154)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5309)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBarDrawerToggle.setDrawerIndicatorEnabled(boolean)' on a null object reference
            at com.example.torch.livetools.MainActivity.onCreate(MainActivity.java:128)
            at android.app.Activity.performCreate(Activity.java:6865)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2322)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2431)
            at android.app.ActivityThread.access$900(ActivityThread.java:154)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5309)
            at java.lang.reflect.Method.invoke(Native Method)

[AngleV]

@davix10
it seems that your drawer has not been initialized before you call the method.
Take a look here how to implement it

https://github.com/mikepenz/MaterialDrawer#code---show-the-hamburger-icon

[davix10]

@AngleV
I used this

getSupportActionBar().setDisplayHomeAsUpEnabled(false);
result.getActionBarDrawerToggle().setDrawerIndicatorEnabled(true);

but it doesn't work.

[AngleV]

@davix10 as i said before make sure you have initialize the drawer

//Create the drawer
        result = new DrawerBuilder()
                .withActivity(this)
               .........

[davix10]

@AngleV This is my code:

  result1 = new DrawerBuilder()
            .withActivity(this)
            .withTranslucentStatusBar(false)
            .withActionBarDrawerToggle(false)
            .withSavedInstance(savedInstanceState)
            .addDrawerItems(
                    new PrimaryDrawerItem().withName(R.string.drawer_item_home).withIcon(FontAwesome.Icon.faw_home),
                    new PrimaryDrawerItem().withName(R.string.drawer_item_free_play).withIcon(FontAwesome.Icon.faw_gamepad),
                    new PrimaryDrawerItem().withName(R.string.drawer_item_custom).withIcon(FontAwesome.Icon.faw_eye),
                    new SectionDrawerItem().withName(R.string.drawer_item_section_header),
                    new SecondaryDrawerItem().withName(R.string.drawer_item_settings).withIcon(FontAwesome.Icon.faw_cog),
                    new SecondaryDrawerItem().withName(R.string.drawer_item_help).withIcon(FontAwesome.Icon.faw_question).withEnabled(false),
                    new SecondaryDrawerItem().withName(R.string.drawer_item_open_source).withIcon(FontAwesome.Icon.faw_github),
                    new SecondaryDrawerItem().withName(R.string.drawer_item_contact).withIcon(FontAwesome.Icon.faw_bullhorn)
            )
            .withOnDrawerItemClickListener(new Drawer.OnDrawerItemClickListener() {
                @Override
                public boolean onItemClick(View view, int position, IDrawerItem drawerItem) {
                    if (drawerItem instanceof Nameable) {
                        Toast.makeText(MainActivity.this, ((Nameable) drawerItem).getName().getText(MainActivity.this), Toast.LENGTH_SHORT).show();
                    }

                    return false;
                }
            }).build();

//        getSupportActionBar().setDisplayHomeAsUpEnabled(false);
         result1.getActionBarDrawerToggle().setDrawerIndicatorEnabled(false);
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);

[AngleV]

@davix10
remove this .withActionBarDrawerToggle(false)

[davix10]

@AngleV
I tried but it still does not work

[AngleV]

@davix10

working example

result = new DrawerBuilder()
                .withActivity(this)
                .withToolbar(toolbar)
                .build();

getSupportActionBar().setDisplayHomeAsUpEnabled(false);
result.getActionBarDrawerToggle().setDrawerIndicatorEnabled(true);

the above gives you the hamburger icon

[davix10]

But I do not have the toolbar, how should I do?

[AngleV]

@davix10
Does your activity extends AppCompatActivity ?

[davix10]

@AngleV
Yes

[mikepenz]

@AngleV thanks for helping.

@davix10 this is only handled when using a Toolbar, if you do not use one please look up google for a general description on how you can achieve this with a DrawerLayout.

as far as i have found the ActionBarDrawerToggle can only be used with Toolbars

[davix10]

@mikepenz
You can not replace the arrow icon with the hamburger icon?

[mikepenz]

@davix10 you can as mentioned. but not via the ActionBarDrawerToggle

Take a closer look in the ActionBarActvitiy of the sample app. i think you can modify this by changing one of those two lines
https://github.com/mikepenz/MaterialDrawer/blob/develop/app/src/main/java/com/mikepenz/materialdrawer/app/ActionBarDrawerActivity.java#L57

But i highly recommend that you switch to a Toolbar it's better and allows you so much more flexibility, and it is implemented within 5 minutes

[davix10]

However through the toolbar it is good only for lollipop and later, right?

[mikepenz]

No toolbar is compatible down to API 7. The MaterialDrawer just down to API 10

[davix10]

Is there an example to switch to a toolbar?

[mikepenz]

Just look at the sample application. It's really easy

[davix10]

Thanks!
Great job!

[VectorSmS]

I want the Account Header to have a rating bar just below the name . Is it possible

[mikepenz]

@VectorSmS your question does not fit into this thread. You can theoretically provide a custom layout for the header. there were already similar questions