Develop Reference

Start Activity in same intent

i want to know how to start all my activities in same intent. My app have a drawer activity and i want when i select any item, it will start an activity in the same intent, how can i do that ?
Main Acitivy
#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) {
startActivity(new Intent(MainActivity.this, Main2Activity.class));
return true;

I checked Google Drive and I'm guessing you're referring to the behavior that when you click on something only a part of the screen updates. You can easily implement this by using Fragments. I cannot explain it to you in detail but this is a developer.google link that will help you get started. https://developer.android.com/training/basics/fragments/index.html

How to open an activity on click of a DrawerLayout navigationView item in android?

What function should i use to open an activity when a DrawerLayout navigationView item is clicked, and do i need to make object for that activity?
Here is my code so far:
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_profile) {
// Handle the camera action
} else if (id == R.id.nav_cv) {
} else if (id == R.id.nav_subscription) {
} else if (id == R.id.nav_logout) {
}

You can open activity like this.
Intent I=new Intent(MainActivity.this,actvitytoopen.class);
StartActivity(I);

You better use fragments instead of activities and change them using FragmentManager. You can find plenty of tutorials just by searching on Google/Youtube.

You can start new activity by
Intent intent = new Intent(this,NextActivity.class);
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
for further info refer https://developer.android.com/training/basics/firstapp/starting-activity.html

I spent a lot of time trying to call a new activity by clicking on navigation drawer item . but it is virtually impossible and if it is possible in any other way I tried, then it is sure that on the called activity there will be no drawer navigation drawer then. Fragment is a part of similar activity so calling fragment is the correct way. If you are calling fragment, navigation drawer will still be there on the side pane and you would be able to select between different items of the drawer.

How to use a navigation drawer in Android Studio?

First time here.
I need to use Navigation drawer for my app. But im working with Activities.
The question is, how can i select an item and redirect to an activity?
Thank you

If you used the Navigation Drawer Template from Android Studio, you will have a main activity with a method onNavigationItemSelected. Implement the method to check the id of the menu item passed to it and decide which Activity to start based on the menu id. For example:
public boolean onNavigationItemSelected(MenuItem item){
int id = item.getItemId();
if (id == R.id.nav_settings) {
startActivity(new Intent(this, SettingsActivity.class));
return true;
}else if (id == R.id.nav_faq) {
startActivity(new Intent(this, FAQActivity.class));
return true;
}
}

Loop due to intents in navigation drawer

I have extended my newActivity to mainActivity fine and I got the navigation drawer working, but now it sort of forms a loop as it again picks up the click of newActivity in navigation drawer and opens up a new intent again,so basically I am opening intent inside intent inside intent, I want to move between items in drawer and not open a new intent for every click, what am I doing wrong?
My navigation Drawer(below) Listening for click event and opens a activity called main acitvity
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
startActivity(new Intent(Main2Activity.this, MainActivity.class));
} 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;
}
Now as this drawer will also come with main activity as I have extended it from the activity with drawer, I get the option of clicking on the mainactivity option in new intent again, so this sort of gives me ability to open mainActivity any number of times, i dont want this

You should use fragments. Activity holds your main view and your activity drawer seperately. When you click some item in drawer, just replace your fragment on main container.
Check this : https://developer.android.com/training/implementing-navigation/nav-drawer.html#ListItemClicks
Edit
public void replaceFragment(Fragment fragment) {
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.mainContainer, fragment);
ft.commit();
}
put this method into your activity. And create a FrameLayout in your Main Layout.
<android.support.v4.widget.DrawerLayout...
<FrameLayout
android:id="#+id/mainContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
Now you can set a fragment in onCreate() for the first screen using replaceFragment(Blala.newInstance()). When you click and item on Drawer just call replaceFragment(...) again.

Android studio navigation drawer with fragment or activities

I'm trying to develop an application using the Navigation drawer template of Android Studio. So, I created a new project using this template. But when I run the program and click on a menu item, the view doesn't change. I searched everywhere on internet, but I didn't see how I can handle this.
This is the code provided by Android Studio:
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camara) {
} 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;
}
What I want to achieve is to replace the current view with the appropriate view for the menu item clicked.
Is Fragment the best way to do this or should I create a different activity for each menu item?

In your case adding fragment will be the best solution.
create a fragment BlankFragment.java
public class BlankFragment extends Fragment {
public BlankFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_blank, container, false);
}
}
and create fragment_black.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.above_inc.shyam.drawer.BlankFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/hello_blank_fragment" />
</FrameLayout>
now replace your method
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
Fragment fragment = null;
if (id == R.id.nav_camera) {
// Handle the camera action
fragment = new BlankFragment();
} 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) {
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
add below code in your content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.above_inc.shyam.drawer.MainActivity"
tools:showIn="#layout/app_bar_main">
<FrameLayout
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</RelativeLayout>
you can also add more fragment to other options same as camera in above code

Fragment will be the best way if you want your navigation drawer to be shown on the next screen when you click on the menu item.
If you will use activity then navigation drawer will not be shown unless you make a BaseActivity which extends Navigation Drawer and use everywhere. In this case you have to change acitivty transition animation too as new activity will pop up after clicking on the menu which may look odd.

Right click on your project -> New -> Fragment.
Edit the switch case accordingly.

#Passiondroid's answer on using Fragments only if you want Navigation drawer across all activities is spot on.
About starting an activity on click of the menu item, in one of my apps, I follow this,
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
switch(id)
{
case R.id.nav_profile:
selection = 1;
intent = new Intent("android.intent.action.WEB");
intent.putExtra("selection",selection);
startActivity(intent);
break;
case R.id.nav_books:
intent = new Intent("android.intent.action.WEBD");
selection = 2;
intent.putExtra("selection",selection);
startActivity(intent);
break;
case R.id.fav_quotes:
intent = new Intent ("android.intent.action.SHOWFAVTES");
selection = 3;
intent.putExtra("selection",selection);
startActivity(intent);
break;
default:
break;
}
To change and configure the Menu Item, you can find the "activity_main_drawer.xml" under res->Menu.
And on click of each of the menu items, you can start an activity as per your wish. You have declare the activities in your AndroidManifest.xml file before you use it.

Beginning from android studio > 3.5 you will realize when you create navigation drawer activity it generates fragments opens when drawer items are clicked.
you can a listener if you want to open an activity.
mAppBarConfiguration = new AppBarConfiguration.Builder(
R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow,
R.id.nav_tools, R.id.nav_share, R.id.nav_send,R.id.nav_accounts)
.setDrawerLayout(drawer)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
NavigationUI.setupWithNavController(navigationView, navController);
navController.addOnDestinationChangedListener(new NavController.OnDestinationChangedListener() {
#Override
public void onDestinationChanged(#NonNull NavController controller, #NonNull NavDestination destination, #Nullable Bundle arguments) {
int menuId = destination.getId();
switch (menuId){
case R.id.nav_gallery:
Toast.makeText(MainActivity.this,"You tapped gallery",Toast.LENGTH_LONG).show();
fab.hide();
break;
default:
fab.show();
break;
}
}
});
for full tutorial. Navigation Drawer