问题删除NavigationView菜单项选择的颜色？

大家好我面临一个奇怪的问题.我添加Navigation View了我Activity的默认情况下,每当我启动应用程序时,第一个导航项目选择了一些背景颜色.

我想删除此功能.

我的朋友:

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:22.2.1'
compile 'com.android.support:design:22.2.1'
}

码:

public class MainActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener {

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

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.setDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);
}

@Override
public void onBackPressed() {
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    if (drawer.isDrawerOpen(GravityCompat.START)) {
        drawer.closeDrawer(GravityCompat.START);
    } else {
        super.onBackPressed();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    if (id == R.id.nav_camera) {
        // Handle the camera action
    } else if (id == R.id.nav_gallery) {

    } else if (id == R.id.nav_slideshow) {

    } else if (id == R.id.nav_manage) {

    }

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
  }
}

菜单XML:

布局:

快照::

任何提示如何删除此类功能？

只返回false,它将处于未检查状态,反之亦然

public boolean onNavigationItemSelected(MenuItem item) {

        switch (item.getItemId()) {
            case R.id.nav_camera:

                break;
            case R.id.nav_gallery:

                break;
            case R.id.nav_slideshow:

                break;
            case R.id.nav_manage:

                break;
        }
        mDrawerLayout.closeDrawer(GravityCompat.START);

        return false;
    }

return false; 

在最后 public boolean onNavigationItemSelected(MenuItem item)

做的工作

您可以完全控制项目的背景色，只需更改以下itemBackground属性NavigationView：

您还可以使用ColorStateList来为选中状态和未选中状态设置不同的背景。

您使用的代码中的任何位置或任何片段都是如此

navigationview.getMenu().findItem(R.id.nav_camera).setChecked(true);

除了它可能,否则你可以在更新的支持库中检查它,如在v23中工作正常

compile 'com.android.support:appcompat-v7:23.3.0'

compile 'com.android.support:design:23.3.0'