我正在开发一个应用程序，我在其中创建了导航抽屉。通过使用此导航抽屉我想导航到活动但有一些问题。当我点击导航项目时它不会导航。我正在使用以下代码：
活动类
public class Search_ActivityND extends AppCompatActivity {
private DrawerLayout drawerLayout;
private Toolbar toolbar;
NavigationView navigationView;
Context ctx = this;
String ride_root, cab_type, email, ve_type, region;
private boolean loggedIn = false;
TextView textView, textView1, textView2;
Spinner spinner1, spinner2;
Button submit, logout;
private ArrayList<String> students1;
private ArrayList<String> students2;
private JSONArray result1, result2, result;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.search_activity_nd);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
initNavigationDrawer();
submit = (Button) findViewById(R.id.button_search);
// logout = (Button) findViewById(R.id.button3_logout);
textView = (TextView) findViewById(R.id.textView_user);
}
public void initNavigationDrawer() {
navigationView = (NavigationView) findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
int id = menuItem.getItemId();
switch (id) {
case R.id.about:
Intent i1 = new Intent(Search_ActivityND.this, About_Activity.class);
startActivity(i1);
drawerLayout.closeDrawers();
break;
case R.id.contact:
Intent i2 = new Intent(Search_ActivityND.this, Contact_Activity.class);
startActivity(i2);
drawerLayout.closeDrawers();
break;
case R.id.privacy:
Intent i3 = new Intent(Search_ActivityND.this, Privacy_Activity.class);
startActivity(i3);
drawerLayout.closeDrawers();
break;
case R.id.logout:
finish();
}
return true;
}
});
SharedPreferences sharedPreferences = getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
loggedIn = sharedPreferences.getBoolean(Config.LOGGEDIN_SHARED_PREF, false);
email = sharedPreferences.getString(Config.EMAIL_SHARED_PREF, "Not Available");
View header = navigationView.getHeaderView(0);
TextView tv_email = (TextView) header.findViewById(R.id.tv_email);
tv_email.setText(email);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer);
ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
@Override
public void onDrawerClosed(View v) {
super.onDrawerClosed(v);
}
@Override
public void onDrawerOpened(View v) {
super.onDrawerOpened(v);
}
};
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
}
}
xml文件
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<android.support.design.widget.NavigationView
android:id="@+id/navigation_view"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:layout_gravity="start"
app:headerLayout="@layout/nav_header"
app:menu="@menu/menu_navigation"/>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/bgbutton">
<include layout="@layout/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"></include>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/scrollView3">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="@color/white"
android:weightSum="1"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/selectregion"
android:textSize="23sp"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"
android:textColor="@color/black"
android:textStyle="bold"
android:id="@+id/textView2"
android:fontFamily="fonts/Helvetica.otf"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" />
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/spinner_region"
android:fontFamily="fonts/Helvetica.otf"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/textView2" />
</RelativeLayout>
<RelativeLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="@color/white"
android:weightSum="1"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/travelfmto"
android:textColor="@color/black"
android:id="@+id/textView4"
android:textSize="23sp"
android:textStyle="bold"
android:fontFamily="fonts/Helvetica.otf"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"/>
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/spinner_root"
android:fontFamily="fonts/Helvetica.otf"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/textView4" />
</RelativeLayout>
<RelativeLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="@color/white"
android:weightSum="1"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/selectvehicle"
android:textColor="@color/black"
android:id="@+id/textView6_ve"
android:textSize="23sp"
android:textStyle="bold"
android:fontFamily="fonts/Helvetica.otf"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"/>
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/spinner_vetype"
android:fontFamily="fonts/Helvetica.otf"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/textView6_ve" />
</RelativeLayout>
<RelativeLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="@color/bgbutton"
android:weightSum="1"
android:layout_gravity="center">
<Button
android:layout_width="350dp"
android:layout_height="45dp"
android:text="@string/searchtaxi"
android:textSize="15sp"
android:textColor="@color/black"
android:background="@drawable/mybutton_y"
android:fontFamily="fonts/Helvetica.otf"
android:id="@+id/button_search"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text=""
android:fontFamily="fonts/Helvetica.otf"
android:textColor="@color/bgbutton"
android:textSize="10sp"
android:id="@+id/textView_user" />
</LinearLayout>
</ScrollView>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>