我有一个java类文件和一个XML文件。在XML文件中,我附加了图标资源和标题。
我在NavigationView中找不到实际的图标。我得到的是灰色图标,它没有在资源可提取文件夹中声明。
我必须将选择器放在已选择的导航项中。
这是我的java代码和XML文件
维护活动.java
public class MainActivity extends AppCompatActivity {
DrawerLayout mDrawerLayout;
NavigationView mNavigationView;
FragmentManager mFragmentManager;
FragmentTransaction mFragmentTransaction;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
mNavigationView = (NavigationView) findViewById(R.id.shitstuff);
android.support.v7.widget.Toolbar toolbar = (android.support.v7.widget.Toolbar) findViewById(R.id.toolbar);
// Show menu icon
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
/**
* Lets inflate the very first fragment
* Here , we are inflating the NewsFragment as the first Fragment
*/
mFragmentManager = getSupportFragmentManager();
mFragmentTransaction = mFragmentManager.beginTransaction();
mFragmentTransaction.replace(R.id.containerView, new NewsFragment()).commit();
// mNavigationView.setBackgroundColor(Color.parseColor("#CFCFCF"));
/**
* Setup click events on the Navigation View Items.
*/
mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
mDrawerLayout.closeDrawers();
if (menuItem.getItemId() == R.id.nav_item_sent) {
FragmentTransaction fragmentTransaction = mFragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.containerView, new SportsFragment()).commit();
}
if (menuItem.getItemId() == R.id.nav_item_inbox) {
FragmentTransaction xfragmentTransaction = mFragmentManager.beginTransaction();
xfragmentTransaction.replace(R.id.containerView, new NewsFragment()).commit();
}
if (menuItem.getItemId() == R.id.nav_item_sent){
FragmentTransaction xfragmentTransaction = mFragmentManager.beginTransaction();
xfragmentTransaction.replace(R.id.containerView, new VideosFragment()).commit();
}
if (menuItem.getItemId() == R.id.nav_item_draft) {
FragmentTransaction xfragmentTransaction = mFragmentManager.beginTransaction();
xfragmentTransaction.replace(R.id.containerView, new OpinionFragment()).commit();
}
if (menuItem.getItemId() == R.id.nav_item_sports) {
FragmentTransaction xfragmentTransaction = mFragmentManager.beginTransaction();
xfragmentTransaction.replace(R.id.containerView, new SportsFragment()).commit();
}
if (menuItem.getItemId() == R.id.nav_item_weather) {
FragmentTransaction xfragmentTransaction = mFragmentManager.beginTransaction();
xfragmentTransaction.replace(R.id.containerView, new NewsFragment()).commit();
}
return false;
}
});
/**
* Setup Drawer Toggle of the Toolbar
*/
ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.app_name,
R.string.app_name);
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_about_us:
Intent intent = new Intent(MainActivity.this, AboutUs.class);
startActivity(intent);
return true;
case R.id.action_terms_of_use:
Intent intent_two = new Intent(MainActivity.this, TermsUse.class);
startActivity(intent_two);
return true;
case R.id.action_privacy_policy:
Intent intent_three = new Intent(MainActivity.this, PrivacyPolicy.class);
startActivity(intent_three);
return true;
case R.id.action_contact_us:
Intent intent_four = new Intent(MainActivity.this, ContactUs.class);
startActivity(intent_four);
case R.id.search:
hidetext();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void hidetext() {
Intent i = new Intent(MainActivity.this, SearchResultActivity.class);
startActivity(i);
}
}
drawermenu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group
android:id="@+id/news"
android:checkableBehavior="single">
<item
android:id="@+id/nav_item_inbox"
android:title="News"
android:icon="@drawable/news"/>
</group>
<group
android:id="@+id/opinion"
android:checkableBehavior="single">
<item
android:id="@+id/nav_item_draft"
android:title="Opinion"
android:icon="@drawable/opinion"/>
</group>
<group
android:id="@+id/sports"
android:checkableBehavior="single">
<item
android:id="@+id/nav_item_sports"
android:title="Sports"
android:icon="@drawable/sports"/>
</group>
<group
android:id="@+id/videos"
android:checkableBehavior="single">
<item
android:id="@+id/nav_item_sent"
android:title="Video Gallery"
android:icon="@drawable/videogallery"/>
</group>
<group
android:id="@+id/weather"
android:checkableBehavior="single">
<item
android:id="@+id/nav_item_weather"
android:title="Weather info"
android:icon="@drawable/weather"/>
</group>
<group
android:id="@+id/misc"
android:checkableBehavior="single">
</group>
</menu>
活动_主.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical">
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:title="SIKKIM EXPRESS" />
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/containerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"></FrameLayout>
<android.support.design.widget.NavigationView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/shitstuff"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layout_marginTop="-24dp"
app:itemTextColor="@color/black"
app:itemBackground="@drawable/selected"
app:menu="@menu/drawermenu" />
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
