onClick Event in der Navigationsleiste

Question

Ich habe eine Navigationsschublade in Android gemacht, in der ich onClick für sie implementieren möchte. Das ist meine Haupttätigkeit:

public class MainActivity extends AppCompatActivity { 

private DrawerLayout mDrawerLayout; 
private ActionBarDrawerToggle aToggle; 
private Toolbar toolbar; 
private RecyclerView recyclerView; 
private RecyclerAdapter recyclerAdapter; 
private RecyclerView.Adapter adapter; 
private NavigationView navigationView; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer); 
    aToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.navig, R.string.open, R.string.Close); 
    navigationView = (NavigationView) findViewById(R.id.nav_view); 
    mDrawerLayout.addDrawerListener(aToggle); 
    toolbar = (Toolbar) findViewById(R.id.nav_action); 
    toolbar.setNavigationIcon(R.drawable.navig); 
    setSupportActionBar(toolbar); 
    aToggle.syncState(); 
    getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
    navigationView.setItemIconTintList(null); 
    recyclerView = (RecyclerView) findViewById(R.id.recycler); 
    recyclerAdapter = new RecyclerAdapter(getApplicationContext()); 
    RecyclerView.LayoutManager layoutManager = new GridLayoutManager(this, 2); 
    recyclerView.setLayoutManager(layoutManager); 
    recyclerView.setAdapter(recyclerAdapter); 


} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    if (aToggle.onOptionsItemSelected(item)) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 

}} 

Das ist mein XML-Layout für die Aktivität ist:

<?xml version="1.0" encoding="utf-8"?> 
<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" 
    tools:context="com.example.alpit.formula2.MainActivity"> 


    <RelativeLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_marginStart="0dp" 
     android:orientation="vertical"> 

     <android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/recycler" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:layout_marginTop="58dp" 
      android:orientation="vertical"></android.support.v7.widget.RecyclerView> 

     <android.support.v7.widget.Toolbar 
      android:id="@+id/nav_action" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:background="#EF6C00" 
      android:orientation="vertical" 
      android:theme="@style/ThemeOverlay.AppCompat.Dark"></android.support.v7.widget.Toolbar> 


    </RelativeLayout> 

    <android.support.design.widget.NavigationView 
     android:id="@+id/nav_view" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:background="#FFA726" 
     app:menu="@menu/navigation_menu" 
     app:theme="@style/NavigationTheme"> 


    </android.support.design.widget.NavigationView> 
</android.support.v4.widget.DrawerLayout> 

Das ist mein Menüpunkte:

<group 
     android:id="@+id/gp1" 
     android:checkableBehavior="single"> 
     <item 
      android:id="@+id/nav_maths" 
      android:icon="@drawable/maths" 
      android:title="Maths" /> 

     <item 
      android:id="@+id/nav_physics" 
      android:icon="@drawable/physics" 
      android:title="Physics" /> 

     <item 
      android:id="@+id/nav_chem" 
      android:icon="@drawable/chem" 
      android:title="Chemistry" /> 

     <item 
      android:id="@+id/EEE" 
      android:icon="@drawable/lightbulb" 
      android:title="Electronics Electrical" /> 
    </group> 

    <group 
     android:id="@+id/gp2" 
     android:checkableBehavior="single"> 
     <item 
      android:id="@+id/unitconversion" 
      android:icon="@drawable/unitconversion" 
      android:title="Unit Conversion" /> 
     <item 
      android:id="@+id/Scientist" 
      android:icon="@drawable/scientist" 
      android:title="Scientist" /> 


     <item 
      android:id="@+id/favourite" 
      android:icon="@drawable/favourite" 
      android:title="Favourite" /> 
    </group> 

    <group 
     android:id="@+id/gp3" 
     android:checkableBehavior="single"> 
     <item 
      android:id="@+id/Share" 
      android:icon="@drawable/share" 
      android:title="Share" /> 
     <item 
      android:id="@+id/Rate" 
      android:icon="@drawable/rate" 
      android:title="Rate" /> 
     <item 
      android:id="@+id/ads" 
      android:icon="@drawable/ad" 
      android:title="Remove Ads" /> 
     <item 
      android:id="@+id/aboutus" 
      android:icon="@drawable/aboutus" 
      android:title="About Us" /> 
    </group> 
</menu> 

Das Problem ist, Ich bin nicht in der Lage zu verstehen, wie man die onClick auf der Navigation implementiert ionenschublade, da sie von der von uns angegebenen Liste ausgefüllt wird, nicht von einer listView.

Wie kann ich onClick auf den Elementen der Navigationsschublade implementieren?

Answer 1

benötigen Sie implementiert NavigationView.OnNavigationItemSelectedListener

public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener 

und fügen Methode

@Override 
public boolean onNavigationItemSelected(@NonNull MenuItem item) { 
    // Handle navigation view item clicks here. 
    switch (item.getItemId()) { 

     case R.id.nav_maths: { 
     //do somthing 
      break; 
     } 
    } 
    //close navigation drawer 
    mDrawerLayout.closeDrawer(GravityCompat.START); 
    return true; 
} 

Methode hinzufügen zu setzen Listener

private void setNavigationViewListner() { 
    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); 
    navigationView.setNavigationItemSelectedListener(this); 
} 

Call-Methode in onCreate()

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setNavigationViewListener() 
} 

Answer 2

Below-Code ist Toggle zu DrawerLayout für das Hinzufügen von

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); 

Und Zuhörer

Navigationsmenüpunkte hinzufügen

implements NavigationView.OnNavigationItemSelectedListener 

und überschreiben Sie unten

Methode

@Override 
    public boolean onNavigationItemSelected(MenuItem item) { 
    // Handle navigation view item clicks here. 
    int id = item.getItemId(); 
    if(id == R.id. nav_maths){ 
     //Handle your stuff here 
    } 
} 

unten code In den onCreate Methode

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

Answer 3

hinzufügen NavigationItemSelectedListener Ereignis nav_view

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

Ihre Aktivität Implement mit NavigationView.OnNavigationItemSelectedListener

und fügen Sie diesen Code für Klick Artikel

@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) { 

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

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

    } 

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

Answer 4

in Ihrem

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    if (aToggle.onOptionsItemSelected(item)) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 

}} 

Fügen Sie diese Zeilen:

switch (item.getItemId()) { 
    case R.id.nav_maths: 
     // your logic here. 
     return true; 
    case R.id.nav_physics: 
     //your logic here 
     return true; 
    default: 
     return super.onOptionsItemSelected(item); 
    } 

Answer 5

fab=(FloatingActionButton)findViewById(R.id.fab); 
    fab.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
} 
    }