So because of my problems with toolbar shadow, which I posted here earlier, I came up with idea how to remove it. Now there's no shadow at least, but there's no activity name or back button. See image below
Here's the content.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="0dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="hr.app.liftme.liftmehr.Vjezbe"
tools:showIn="#layout/activity_vjezbe">
<android.support.design.widget.AppBarLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:text="Vježbe"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<include
android:layout_height="wrap_content"
android:layout_width="match_parent"
layout="#layout/toolbar_layout"
>
</include>
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
app:tabMode="scrollable"
app:tabGravity="fill"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/viewPager"
android:background="#ffffff">
</android.support.v4.view.ViewPager>
</android.support.design.widget.AppBarLayout>
</LinearLayout>
and here's the toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:fitsSystemWindows="true"
android:id="#+id/toolBar"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
</android.support.v7.widget.Toolbar>
java file
package hr.app.liftme.liftmehr;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
public class Vjezbe extends AppCompatActivity {
private Toolbar toolbar;
TabLayout tabLayout;
ViewPager viewPager;
ViewPagerAdapter viewPagerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_vjezbe);
toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar == null){
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Vježbe");
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setElevation(0);
}
tabLayout = (TabLayout)findViewById(R.id.tabLayout);
viewPager = (ViewPager)findViewById(R.id.viewPager);
viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());
//here are the fragments, not going to copy all of that
As you can see I tried something with if statement in java file, but that didn't work.
What am I missing?
Problem
if (toolbar == null)
Solutions
Use !null checking instead of null
if (toolbar != null){
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Vježbe");
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setElevation(0);
}
Edit
// toolbar
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
if (getSupportActionBar() != null){
//Your code
getSupportActionBar().setTitle("Vježbe");
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setElevation(0);
}
Worked
By adding android:elevation="0dp" .
remove
if(toolbar==null) beacuse this condition is true only if toolbar is null
and make it
if (toolbar != null){
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Vježbe");
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setElevation(0);
}
Just Add this code to you onCreate event like this:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.example_activity);//set view
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);// initial your tool bar
setSupportActionBar(toolbar);//set tool bar
getSupportActionBar().setDisplayHomeAsUpEnabled(true);//allow back button
getSupportActionBar().setDisplayShowHomeEnabled(true);//Show back arrow
getSupportActionBar().setLogo(R.mipmap.yourlogo);//set logo
getSupportActionBar().setDisplayUseLogoEnabled(true);//enable log
}
Related
Hi have been using fragments and have a drawer header which is going to display the currently logged in user.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.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:layout_centerHorizontal="false"
android:background="?android:attr/colorBackground"
tools:context=".MainActivity">
<include
layout="#layout/drawer_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<include
layout="#layout/content_main"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<com.google.android.material.navigation.NavigationView
android:id="#+id/navigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/drawer_header"
app:menu="#menu/drawer_menu" />
</androidx.drawerlayout.widget.DrawerLayout>
This is the code that creates the layout and the adds the header and menu to the navigation view. I am trying to access the text stored in the drawer header with an id.
The problem i get is that when it tries to set the variable usernameHeader to the id "user" it throws an error saying that there is a null object reference. My understanding is that the drawer is create during the onCreate when it says "actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.open, R.string.close);" i could be wrong and any help is greatly appreciated. Thanks in advance
UPDATE:
I have rewritten and minimal example to show the exact part where it breaks.
I have added the drawer_header.xml which contains the TextView with the id 'user'. I have also added the minimal version of the MainActivity.
drawer_header.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="150dp"
android:background="#color/teal_700">
<TextView
android:id="#+id/user"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="25dp"
android:text="#string/user"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package com.secureit.drawerfragment;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import com.google.android.material.navigation.NavigationView;
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
DrawerLayout drawerLayout;
ActionBarDrawerToggle actionBarDrawerToggle;
Toolbar toolbar;
NavigationView navigationView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
drawerLayout = findViewById(R.id.drawer);
navigationView = findViewById(R.id.navigationView);
navigationView.setNavigationItemSelectedListener(this);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.open, R.string.close);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
actionBarDrawerToggle.syncState();
TextView textView = findViewById(R.id.user); // This is where the error shows "Null object reference"
textView.setText("user");
}
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
drawerLayout.closeDrawer(GravityCompat.START);
return false;
}
}
The problem is, you are accessing a TextView in different view from your activity. You should inflate your header view first and then use that to access your TextView. Add this to your onCreate method.
View headerView = navigationView.getHeaderView(0);
TextView txtUser= headerView.findViewById(R.id.user);
txtUser.setText("user");
I try to use the toolbar in my app and I get this message: "Error inflating class androidx.appcompat.widget.Toolbar".
i glad if someone will find my problem (using the latest version of the android studio)
XML:
<androidx.appcompat.widget.Toolbar
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="#00008577"
android:minHeight="?actionBarTheme"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navigationIcon="#drawable/main"
android:id="#+id/toolbar"/>
JAVA:
private Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViews();
setSupportActionBar(toolbar);
}
private void findViews() {
drawer_layout = findViewById(R.id.drawer_layout);
nav_view = findViewById(R.id.nav_view);
toolbar = findViewById(R.id.toolbar);
}
STYLE:
<style name="AppTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
Exception received
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.or.ourshoppinglist/com.or.ourshoppinglist.MainActivity}: android.view.InflateException: Binary XML file line #28: Binary XML file line #28: Error inflating class <unknown>
Hi noa shen and welcome to Stackoverflow.
Firstly, there can be an issue with your import for Toolbar. Since androix version came out now you got two versions of Toolbar:
androidx.appcompat.widget.Toolbar
and
android.support.v7.widget.Toolbar
So first check your imports in your JAVA.class and see if you imported the right version which would be:
androidx.appcompat.widget.Toolbar
Besides that, why is your toolbar width equals to 0?
<androidx.appcompat.widget.Toolbar
android:layout_width="0dp"
Also to use toolbar you need to paste this in your build Gradle file in dependencies:
implementation 'androidx.appcompat:appcompat:1.0.0'
If this doesn't solve anything please provide your whole XML, JAVA.class, and full stack trace of your exception.
In build.gradle (module app) file, implementation of The upgraded version : implementation 'androidx.appcompat:appcompat:1.4.1' caused me the error. When I used implementation 'androidx.appcompat:appcompat:1.0.0' , The error has gone.
added my whole XML
<androidx.drawerlayout.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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity"
tools:openDrawer="start">
<com.google.android.material.navigation.NavigationView
android:id="#+id/nav_view"
android:layout_gravity="start"
android:layout_height="match_parent"
android:layout_width="wrap_content"
app:headerLayout="#layout/header"
app:menu="#menu/main_menu" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF">
<androidx.appcompat.widget.Toolbar
android:layout_width="100dp"
android:layout_height="wrap_content"
android:background="#00008577"
android:minHeight="?actionBarTheme"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navigationIcon="#drawable/main"
android:id="#+id/toolbar"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.drawerlayout.widget.DrawerLayout>
JAVA:
package com.or.ourshoppinglist;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.drawerlayout.widget.DrawerLayout;
import android.os.Bundle;
import com.google.android.material.navigation.NavigationView;
public class MainActivity extends AppCompatActivity {
private DrawerLayout drawer_layout;
private NavigationView nav_view;
private Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViews();
setSupportActionBar(toolbar);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer_layout,toolbar,R.string.navigation_drawer_open,R.string.navigation_drawer_close);
drawer_layout.addDrawerListener(toggle);
toggle.syncState();
}
private void findViews() {
drawer_layout = findViewById(R.id.drawer_layout);
nav_view = findViewById(R.id.nav_view);
toolbar = findViewById(R.id.toolbar);
}
}
I fixed this by changing android:background to app:srcCompat when I am using
?android:attr.
I am new to android. currently, I am making an android app with a navigation drawer. I managed to add the drawer. and when slid it works properly. but my problem is I cannot manage to add a hamburger icon.
my minimum sdk version is 17
I tried every solution given in the previous problems but didn't work.
My main activity code
package com.example.myapplication;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.drawerlayout.widget.DrawerLayout;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(myToolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDefaultDisplayHomeAsUpEnabled(true);
DrawerLayout drawer =(DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, R.string.open, R.string.close);
drawer.addDrawerListener(toggle);
toggle.setDrawerIndicatorEnabled(true);
toggle.syncState();
}
// Menu icons are inflated just as they were with actionbar
#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;
}
}
my xml code
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="left">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#E0E0E0"
tools:context=".MainActivity"
android:fitsSystemWindows="true">
<androidx.appcompat.widget.Toolbar
android:id="#+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#null"
android:theme="#style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</RelativeLayout>
<com.google.android.material.navigation.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="#menu/activity_main_drawer"
android:fitsSystemWindows="true"/>
</androidx.drawerlayout.widget.DrawerLayout>
Everything looks fine, You just need to pass the toolbar object into the ActionBarDrawerToggle constructer as a third argument.
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, myToolbar, R.string.open, R.string.close);
here
Check out the following example:
MainActivity.class
public class MainActivity extends AppCompatActivity {
private final String TAG = MainActivity.class.getSimpleName();
private ActionBarDrawerToggle toggle = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(myToolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
final ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setHomeButtonEnabled(true);
actionBar.setDefaultDisplayHomeAsUpEnabled(true);
toggle = new ActionBarDrawerToggle(this, drawer, myToolbar, R.string.open, R.string.close) {
public void onDrawerClosed(View view) {
supportInvalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
supportInvalidateOptionsMenu();
}
};
toggle.setDrawerIndicatorEnabled(true);
drawer.addDrawerListener(toggle);
toggle.syncState();
}
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
if(toggle != null) {
toggle.syncState();
}
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if (toggle != null) {
toggle.onConfigurationChanged(newConfig);
}
}
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#E0E0E0"
android:fitsSystemWindows="true">
<androidx.appcompat.widget.Toolbar
android:id="#+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#null"
android:theme="#style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</RelativeLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Text View"
android:textSize="35sp"
android:background="#color/colorAccent"
android:layout_gravity="start"
android:gravity="center">
</TextView>
</androidx.drawerlayout.widget.DrawerLayout>
I am using TabLayout and SearcView. How can I do , when click search button to hide tab layout like whatsapp.
I try setEnabled method but it can't work properly.
I also used Visibility,setActivated method.What can I do?I don't know. I must use setAnimation method or something else?
MainActivity.java
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private CoordinatorLayout coordinatorLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
coordinatorLayout = (CoordinatorLayout)findViewById(R.id.root_view);
toolbar = (Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
viewPager = (ViewPager)findViewById(R.id.view_pager);
setUpViewPager(viewPager);
tabLayout = (TabLayout)findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setUpViewPager(ViewPager viewPager) {
ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());
viewPagerAdapter.addFragment(CurrencyFragment.getInstance(),"Tracker"); // `CurrencyFragment.getInstance()` should be in `FragmentPagerAdapter.getItem()`
viewPagerAdapter.addFragment(ConvertFragment.getInstance(),"Converter"); // `ConvertFragment.getInstance()` should be in `FragmentPagerAdapter.getItem()`
viewPager.setAdapter(viewPagerAdapter);
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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/root_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
app:titleTextColor="#android:color/white"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabGravity="fill">
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
</android.support.design.widget.CoordinatorLayout>
If you have used menu item for search then you have to follow below code:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.search) // set your own id if you have different id from search.
{
tabLayout.setVisibility(View.GONE);
return true;
}
return super.onOptionsItemSelected(item);
}
When you finished with search then set tablayout visible.
tabLayout.setVisibility(View.VISIBLE);
Follow these simple steps
In your XML file create Appbar. Inside that create a Constraintlayout and keep it as match parent match parent.
Inside that keep your toolbar at the top and below that your tab layout.
Now Create the Edittext of search view as WhatsApp and keep it also as Top_to_top of parent and make the view View. Gone.
In Activity on click of the search icon
toolbar.setVisibility(View.GONE);
tabLayout.setVisibility(View.GONE);
searchViewEditText.setVisibility(View.GONE);
I'm making an app where the activity has this layout (which I got off a guide) and its perfect because this is what I wanted. But since I have been unable to display data in it - as you can see with the recycler view put in the layout file.
Here's the layout
<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/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scrollbars="vertical" />
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/navheader"
app:menu="#menu/menu_navigation" />
Here's the activity which runs everything:
import android.support.design.widget.NavigationView;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import java.util.ArrayList;
import java.util.List;
public class basics_list extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
private List<Basic> basicList = new ArrayList<>();
private RecyclerView recyclerView;
private BasicsAdapter mAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle(R.string.basics_list_name);
setContentView(R.layout.activity_basics_list);
// Adding Toolbar to Main screen
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// set recycler view
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mAdapter = new BasicsAdapter(basicList);
final RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(mAdapter);
prepareBasicsData();
// Create Navigation drawer and inflate layout
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer);
// Adding menu icon to Toolbar
ActionBar supportActionBar = getSupportActionBar();
if (supportActionBar != null) {
supportActionBar.setHomeAsUpIndicator(R.drawable.ic_menu_white_24dp);
supportActionBar.setDisplayHomeAsUpEnabled(true);
}
// Set behavior of Navigation drawer
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
// This method will trigger on item Click of navigation menu
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
// Set item in checked state
menuItem.setChecked(true);
// TODO: handle navigation
// Closing drawer on item click
mDrawerLayout.closeDrawers();
return true;
}
});
}
private void prepareBasicsData() {
Basic basic = new Basic("one");
basicList.add(basic);
basic = new Basic("two");
basicList.add(basic);
basic = new Basic("three");
basicList.add(basic);
mAdapter.notifyDataSetChanged();
}
}
Try adding a layout_behavior to your RecyclerView
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:scrollbars="vertical" />
See this question for more about placing views within CoordinatorLayouts