相关疑难解决方法(0)

我正在尝试在我的导航抽屉菜单中的项目旁边显示一个图标,但由于某种原因,图标始终显示为灰色而不是原始颜色(棕色).有没有办法防止这种情况发生,以显示图标的原始颜色？

MainActivity.java

public class MainActivity extends AppCompatActivity {

    private DrawerLayout mDrawerLayout;

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

        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        if (navigationView != null) {
            setupDrawerContent(navigationView);
        }
    }

    private void setupDrawerContent(NavigationView navigationView) {
        navigationView.setNavigationItemSelectedListener(
                new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(MenuItem menuItem) {
                mDrawerLayout.closeDrawers();

                return true;
            }
        });
    }
}

drawer_view.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:title="Section">
        <menu>
            <item
                android:id="@+id/navigation_item_1"
                android:icon="@drawable/ic_browncircle"
                android:title="Sub item 1" />
        </menu>
    </item>
</menu>