Butterknife: How to use when a AnotherActivity extends baseActivity?

[EdenStack]

How to use "ButterKnife.bind(this);" when a AnotherActivity extends BaseActivity?
I've already override the setContentView method in baseactivity, when I use "ButterKnife.bind(this);" in AnotherActivity , it will throws "Caused by: java.lang.IllegalStateException"

[DJafari]

using this for your baseActivity :

public abstract class BaseActivity extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(getLayout());
        ButterKnife.bind(this);
    }

    public abstract @LayoutRes int getLayout();
}

for each activity you must return layout id by getLayout

[EdenStack]

If I do this ,how could i set contentView of BaseActivity?

[sohayb]

In my base activity I'm actually using this:

public abstract class BaseActivity extends RxAppCompatActivity {
    @Override
    public void setContentView(int layoutResID) {
        super.setContentView(layoutResID);
        ButterKnife.bind(this);
    }
}

[EdenStack]

It's still not works, my BaseActivity has DrawerLayout, dou you have a good way to add it to BaseActivity and other activity can extends BaseActivity?

[ytRino]

If you call bind(this) at BaseActivity, you don't need to call bind(this) at AnotherActivity.
If AnotherActivity does not have DrawerLayout which BaseActivity has, add @Nullable to that view.
If AnotherActivity have DrawerLayout, you don't need to declare DrawerLayout in AnotherActivity.

[sohayb]

I don't get it, I think the drawer layout should be in an activity that extends your base activity:
Base Activity

public abstract class BaseActivity extends RxAppCompatActivity {
    @Override
    public void setContentView(int layoutResID) {
        super.setContentView(layoutResID);
        ButterKnife.bind(this);
    }
}

Then in your MainActivity that should have the drawer layout:

public class MainActivity extends BaseActivity implements
        NavigationView.OnNavigationItemSelectedListener{

    @Bind(R.id.drawer_layout) DrawerLayout mDrawerLayout;
    @Bind(R.id.toolbar)Toolbar toolbar;

    @Bind(R.id.search_view) MaterialSearchView mSearchView;
    @Bind(R.id.nav_view) NavigationView mNavigationView;
    private SmoothDrawerListener mDrawerToggle;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setSupportActionBar(toolbar);

        final ActionBar ab = getSupportActionBar();
        assert ab != null;
        ab.setHomeAsUpIndicator(R.drawable.ic_person_outline_white_24dp);
        ab.setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setIcon(R.drawable.zero_dimen_icon);

        mNavigationView.setNavigationItemSelectedListener(this);

        mDrawerToggle = new SmoothDrawerListener(this, mDrawerLayout, toolbar);
        mDrawerLayout.setDrawerListener(mDrawerToggle);
    }

And all is working just fine

[EdenStack]

I mean all of my activitieswant to use the same drawerLayout,so I made a BaseActivitywho has a drawerLayoutandimplements NavigationView.OnNavigationItemSelectedListener, when anotherActivitywant to have DrawerLayout, I just let it extends BaseActivity,
What should I do ? Every activity has _different_ contentView.

[sohayb]

Ah okay, so you want your BaseActivity to have a different layout res than your OtherActivity ?

[ytRino]

So you can write @Bind(R.id.drawer) DrawerLayout drawer and call bind(this) at BaseActivity,
then you can use drawer at AnotherActivity.
You don't need to do extra (like call bind()) at AnotherActivity.

[sohayb]

:+1: Exactly, just that you need to have R.id.drawer defined in the layout of AnotherActivity

[JakeWharton]

This seems to be answered, but isn't a bug or feature request anyway so closing. StackOverflow is a great place for asking usage-based questions since it serves as an archive for future people searching for answers. Much better than GitHub issues in that regard.

[jemshit]

@sohayb @ytRino @Tneciv you have to write Butterknife.bind(this) in both Base and Extended Activities. But in Base Activity, you should annotate binded fields with @Nullable like:

@BindView(R.id.base_content_frame) @Nullable

Related issue: https://github.com/JakeWharton/butterknife/issues/343

_I think you need to put @Nullable on both Base and Extended Activity binded fields, then it works. THats a big boilerplate :/_

[afiqiqmal]

on BaseActivity

 @Override
    public void setContentView(@LayoutRes int layoutResID) {
        super.setContentView(layoutResID);
        ButterKnife.bind(this);
    }