Develop Reference

Click on hamburger icon to open/close DrawerLayout [duplicate]

I have this nav drawer which was working perfectly fine.
Refactoring my code I removed all onOptionsItemSelecteds in activities and made all activities inherit from a base activity which extends AppComplatActivity and implements all the necessary methods.
After this clicking on hamburger icon does not work any more even though I have syncstate() and every thing.
Any clues why this is not working?
One of the activities:
public class MainActivity extends BaseActivity implements SearchFilterFragment.OnFragmentInteractionListener {
NavigationView navigationView;
DrawerLayout drawerLayout;
private Tracker mTracker;
#Override
protected void onResume() {
super.onResume();
drawerLayout.openDrawer(GravityCompat.START);
}
#Override
protected void onPostResume() {
super.onPostResume();
mTracker.setScreenName("MainActivity" + "-----");
mTracker.send(new HitBuilders.ScreenViewBuilder().build());
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerLayout.openDrawer(GravityCompat.START);
navigationView = (NavigationView) findViewById(R.id.navigation_view_primary);
navigationView.setNavigationItemSelectedListener(new NavigationDrawerListener(this));
setupToolbar();
Haftdong application = (Haftdong) getApplication();
mTracker = application.getDefaultTracker();
}
private void setupToolbar() {
// Show menu icon
final ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);// will make the icon clickable and add the < at the left of the icon.
DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();//for hamburger icon
}
#Override
public void onFragmentInteraction(Uri uri) {
}
}
BaseActivity:
public class BaseActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#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_base, 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);
}
}

You're using the four-parameter constructor for ActionBarDrawerToggle, which means you'll have to call the toggle's onOptionsItemSelected() method in MainActivity's onOptionsItemSelected() override in order to open/close the drawer.
For example:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if(mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
If you happen to be providing your own Toolbar – e.g., as the support ActionBar (though it's not necessary to set it as such) – then you can instead pass that Toolbar as the third argument in the ActionBarDrawerToggle constructor call. For example:
Toolbar toolbar = findViewById(R.id.toolbar);
ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout,
toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
The drawer opening/closing will then be handled by ActionBarDrawerToggle internally, and you won't need to call through to the toggle in onOptionsItemSelected().
The setDisplayHomeAsUpEnabled() call is also unnecessary for this setup, which is handy if you don't want to set the Toolbar as the ActionBar.

How to open the Sliding Navigation Drawer when ImageView is clicked?

I'm trying to implement the Navigation Drawer Activity on my Dashboard Activity. In my application, I have created a Theme where the 'Toolbar/ActionBar' is removed and just put an ImageView for my burger menu on a custom layout and include it on my dashboard layout. What I wanted is that when this ImageView is clicked the sliding drawer will display.
What I tried to do is add an Navigation Drawer Activity by com.project.projectname -> New -> activity -> 'Navigation Drawer Activity' and automatically it adds NavigationActivity class , activity_navigation.xml
app_bar_navigation.xml, etc.
But I was wondering how can I open the drawer?
In my Dashboard Activity I added this
public class DashboardActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dashboard);
View side_tab = findViewById(R.id.side_tab);
expanded_menu = (ImageView) side_tab.findViewById(R.id.expanded_menu);
expanded_menu.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
// open drawer here
}
});
Also, in NavigationActivity it uses ActionBarDrawerToggle, I must not use this because I don't apply an ActionBar. But what alternative can I use?
Here is my NavigationActivity
public class NavigationActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_navigation);
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.navigation, 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();
Intent goToSreen;
if (id == R.id.nav_dashboard) {
goToSreen = new Intent(NavigationActivity.this, DashboardActivity.class);
startActivity(goToSreen);
} else if (id == R.id.nav_others) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
Thank you for your kind help.
Update
So in my Dashboard Activity I added the following
NavigationActivity navigationActivity;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dashboard);
View side_tab = findViewById(R.id.side_tab);
expanded_menu = (ImageView) side_tab.findViewById(R.id.expanded_menu);
expanded_menu.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
navigationActivity = new NavigationActivity() ;
navigationActivity.drawer.openDrawer(GravityCompat.START);
}
});
And in my Navigation Activity I add a global variable
public class NavigationActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
DrawerLayout drawer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_navigation);
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
I have managed to call the drawer in my Dashboard Activity but the sliding menu still doesn't display when I clicked my burger menu. The app crashes and displays java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.widget.DrawerLayout.openDrawer(int)' on a null object reference

Add this in your NavigationActivity
public class NavigationActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
//Add this line
public static DrawerLayout drawer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_navigation);
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();
.......
And next change this
expanded_menu.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
// open drawer here
NavigationActivity. drawer.openDrawer(GravityCompat.START);
}
});
Try this hope it will solve your problrm.

Add the following code in NavigationActivity:
DrawerLayout mDrawerLayout; // Declare globally
In onCreate() :
mDrawerLayout = (DrawerLayout) findViewById(R.id.nav_drawer);
expanded_menu = (ImageView) side_tab.findViewById(R.id.expanded_menu);
expanded_menu.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
// open drawer here
mDrawerLayout.openDrawer(Gravity.LEFT);
}
});
If the drawer is open, close it onBackPressed():
#Override
public void onBackPressed() {
if (mDrawerLayout.isDrawerOpen(Gravity.LEFT)) {
mDrawerLayout.closeDrawer(Gravity.LEFT);
return;
}
}
Hope this helps.

I extend my NavigationActivity to my DashboardActivity like below
public class DashboardActivity extends NavigationActivity {
side_tab = findViewById(R.id.side_tab);
expanded_menu = (ImageView) side_tab.findViewById(R.id.expanded_menu);
expanded_menu.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
side_tab.setVisibility(View.INVISIBLE);
drawer.openDrawer(GravityCompat.START);
}
});
and then follow the said answered by #Hassan Usman and #tahsinRupam
after that I added the DrawerLayout in my dashboard.xml

implementing Activities instead of fragments in Navigation drawer

I have been working on this nav drawer with activites. I have a couple of activites in my projects that i want to switch between using the nav drawer.
So far I have achieved this
Create Nav drawer and Write some activities code.
Show same nav drawer in all activities.
Start a default activity when app starts.
But now my issue is that when i open my app for first time, it loads my desired activity and i can see this nav drawer. when i switch activity and press the back button, I'm getting this blank activity with nav drawer. I know its some kinda beginner level issue. But please if someone can suggest the edit. Here is my code.
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
NavigationView navigationView = null;
Toolbar toolbar = null;
DrawerLayout drawer;
FrameLayout frameLayout;
private static boolean isLaunch = true;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
frameLayout = (FrameLayout) findViewById(R.id.contant_frame);
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
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, "", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
if (isLaunch) {
isLaunch = false;
startActivity(new Intent (this,MyAct.class));
}
}
#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_manage) {
startActivity(new Intent(this,About.class));
} else if (id == R.id.nav_share) {
startActivity(new Intent(this,About.class));
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
I ve this same app working perfect in simple listview type nav drawer. but now i m trying to implement fancy material design.

Try overriding the onBackButtonPressed method.

Clearing/removing the onBackpressed method in MyAct and About class will bring back the last view with anything that was populated.
But if you want to open some other view or want to start new activity when back key is pressed, you can add your code here in this onBackPressed method
Hope it helps. Cheers!

Toolbar back button is not calling onOptionsItemSelected Android

I can able to see the back button in the toolbar but when i click, nothing happens. It is not going to onOptionsItemSelected but when i remove the whole implementation of ActionBarDrawerToggle then the back button is working fine. I need to switch between both when i needed. Thank in advance.
package demo.sample.com.sample.base;
public class MainActivity extends AppCompatActivity {
private static final String TAG = MainActivity.class.getSimpleName();
private DrawerLayout mDrawer;
private ActionBarDrawerToggle mDrawerToggle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_digi_care);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(
this, mDrawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
mDrawer.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
mDrawer.setFocusable(false);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setItemIconTintList(null);
navigationView.setNavigationItemSelectedListener(this);
navigationView.getMenu().getItem(0).setChecked(true);
mDrawerToggle.setDrawerIndicatorEnabled(false);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
Logger.i(TAG, "onOptionsItemSelected called");
switch (item.getItemId()) {
case android.R.id.home:
Logger.i(TAG, "Back button pressed"); //Never getting called
//onBackPressed();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.map_menu, menu);
return super.onCreateOptionsMenu(menu);
}
}

If you want the onOptionsItemSelected() method to fire when the toggle Button is clicked, you need to use the four-parameter constructor for ActionBarDrawerToggle that doesn't take a Toolbar argument.
public ActionBarDrawerToggle(Activity activity,
DrawerLayout drawerLayout,
int openDrawerContentDescRes,
int closeDrawerContentDescRes)
Otherwise, the toggle will just handle the drawer opening/closing directly itself.

And i finally got a solution. instead getting toolbar home button click ononOptionsItemSelected() it can be handled through DrawerToggle.setToolbarNavigationClickListener.
mDrawerToggle.setToolbarNavigationClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// event when click home button
Log.d("cek", "home selected");
}
});
Thanks to #meow meo. Source - Cannot catch toolbar home button click event

toolbar and navigation on it

The project has the activity of the toolbar. Activity in dynamically changing fragments. Depending on the fragment ought to change content toolbar.
Turning to the second fragment ought to appear in the toolbar nazat arrow which returns to the previous fragment.
public class StartPageActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
private Toolbar mToolbar;
private NavigationView mNavigationView;
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle drawerToggle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.start_page_activity);
setTitle("ForgetFul");
getFragment(new MainFragment());
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
mNavigationView = (NavigationView) findViewById(R.id.main_drawer);
mNavigationView.setNavigationItemSelectedListener(this);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_widget);
drawerToggle
= new ActionBarDrawerToggle(this, mDrawerLayout, mToolbar, R.string.drawer_open, R.string.drawer_close);
mDrawerLayout.setDrawerListener(drawerToggle);
drawerToggle.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) {
// 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) {
Log.i("Activity", "Setting");
return true;
}
if (android.R.id.home == id) {
Log.i("One", "Dude");
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}...
In the active from the start displayed MainFragment.
In the second activity, I use the following code:
((AppCompatActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
"Up" Arrow appeared, but when I click on arrow, all time open the NavigationView.
how to fix it?
P.S. Sorry for English :(

Try this.
First, remove implements NavigationView.OnNavigationItemSelectedListener , and also comment out the overidden methods and variables.
Then overide the Activity's onBackPressed() method like this:
#Override
public void onBackPressed() {
FragmentManager fragmentManager = getFragmentManager();
if (fragmentManager.getBackStackEntryCount() != 0) {
fragmentManager.popBackStack();
} else {
super.onBackPressed();
}
}
This will make sure that the previous fragments are getting displayed on pressing the Back key.
Then, simply call it in onOptionsItemSelected() method:
if (id == android.R.id.home) {
onBackPressed();
return true;
}