Develop Reference

Lock one of two fragments in DrawerLayout

I have two navigation fragments in the DrawerLayout. One navigation fragment in on the left and second is on the right.
In some cases I need to open left navigation fragment and lock it.
When I had only left navigation fragment I used drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_OPEN);
But when I have added second navigation fragment on the right, this method started to open and lock both panels.
How to open and lock only left navigation view in this case?

Change you code like this
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drawer_layout);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mLeftDrawerList = (ListView) findViewById(R.id.left_drawer);
mRightDrawerList = (ListView) findViewById(R.id.right_drawer);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,R.drawable.ic_drawer, R.string.drawer_open,R.string.drawer_close) {
public void onDrawerOpened(View view){
if(view.equals(mRightDrawerList)) {
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, mLeftDrawerList);
} else {
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, mRightDrawerList);
}
invalidateOptionsMenu();
}
public void onDrawerClosed(View view) {
if(view.equals(mRightDrawerList)) {
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, mLeftDrawerList);
} else {
mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, mRightDrawerList);
}
invalidateOptionsMenu();
}
});
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
This should work.

Control the Toolbar icon with NavigationDrawer

I'm currently using within my app the android.support.v7.widget.Toolbar and android.support.v4.widget.DrawerLayout. Everything is working right, but there is a slight thing I want to change its behaviour.
When I open the drawer, the whole drawer occupies the space of the Toolbar. It would be nice that the Toolbar stays on top, like in the Google Music app. How can I achieve that?
But the most important thing isn't the previous. At first, the icon which is loaded in the application is the three stripped one. I've realised that after opening the drawer, the icon changes to an arrow. And after loading a fragment, the arrow remains there as the Toolbar icon, even if I press back until the first screen. How could I avoid the arrow appearing from after opening the drawer? I'd want to change this icon manually, specially when I load lower level fragments.
Thanks for your help!
Code:
public class HomeActivity extends BaseActivity {
...
private DrawerLayout mDrawer;
private ActionBarDrawerToggle mDrawerToggle;
private ListView mDrawerList;
private ListView mDrawerRightList;
private RelativeLayout mDrawerRelativeLayout;
private String[] mDrawerMenuTitles;
private Toolbar mToolbar;
...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDrawerMenuTitles = getResources().getStringArray(R.array.main_menu_options);
mDrawer = (DrawerLayout) findViewById(R.id.drawer);
mDrawerRelativeLayout = (RelativeLayout) findViewById(R.id.theDrawerRelativeLayout);
mDrawer.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
mDrawerRightList = (ListView) findViewById(R.id.theDrawerRight);
mDrawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, mDrawerRightList);
mDrawerList = (ListView) findViewById(R.id.theDrawer);
mDrawerList.setAdapter(new ArrayAdapter<String>(
getSupportActionBar().getThemedContext(),
R.layout.drawer_list_item,
mDrawerMenuTitles
));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
setmToolbar((Toolbar) findViewById(R.id.toolbar));
mDrawerToggle = new ActionBarDrawerToggle(
this,
mDrawer,
mToolbar,
R.string.drawer_open,
R.string.drawer_close){
#Override
public void onDrawerSlide(View drawerView, float slideOffset) {
// TODO Auto-generated method stub
super.onDrawerSlide(drawerView, slideOffset);
}
#Override
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
//getSupportActionBar().setTitle(CURRENT_FRAGMENT);
}
/** Called when a drawer has settled in a completely open state. */
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
//getSupportActionBar().setTitle("Configuración");
}
};
mDrawerToggle.setDrawerIndicatorEnabled(true);
mDrawerToggle.syncState();
mDrawer.setDrawerListener(mDrawerToggle);
setToolbarSubtitle(getString(R.string.misrutas_titulo));
initialisePreferences(savedInstanceState);
if (savedInstanceState == null) {
replaceFragment(DEFAULT_FRAGMENT);
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
mDrawer.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}
private class DrawerItemClickListener implements OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//selectItem(position);
final int thePos = position;
mDrawer.setDrawerListener( new DrawerLayout.SimpleDrawerListener(){
#Override
public void onDrawerClosed(View drawerView){
....
}
});
if(mDrawer.isDrawerOpen(GravityCompat.START))
mDrawer.closeDrawer(mDrawerRelativeLayout);
}
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
#Override
public void onBackPressed(){
setToolbarSubtitle(getString(R.string.app_name_subtitle));
if (getSupportFragmentManager().getBackStackEntryCount() == 1){
finish();
}
else {
super.onBackPressed();
}
}
private void replaceFragment (String to){
if(!to.equalsIgnoreCase(CURRENT_FRAGMENT)){
CURRENT_FRAGMENT = to;
Fragment fragment = Fragment.instantiate(HomeActivity.this, to);
String backStateName = fragment.getClass().getName();
String fragmentTag = backStateName;
FragmentManager manager = getSupportFragmentManager();
boolean fragmentPopped = manager.popBackStackImmediate (backStateName, 0);
if (!fragmentPopped && manager.findFragmentByTag(fragmentTag) == null){ //fragment not in back stack, create it.
FragmentTransaction ft = manager.beginTransaction();
ft.replace(R.id.content_frame, fragment, fragmentTag);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.addToBackStack(backStateName);
ft.commit();
}
}
}
//More methods
....
}
EDIT:
I have been able to modify a little bit my layout, so that the Toolbar stays on top of the rest screen (drawer and fragment). But I haven't been able to control the icon. When I open the drawer, the hamburger icon converts into the arrow. When I close the drawer, the arrow is converted into the hamburger. But when I press an option within the drawer, a new fragment is inflated and the hamburger icon is replaced by the arrow until the application is closed, so that the hamburger icon is never seen.
How can I adapt the icon behaviour so that it doesn't change from hamburger to arrow when I click over a drawer option?

now I try to do a similiar navigation drawer as you...
Basically respect me is that I had a diferent package for navigation drawer that I think so is different from your navigation drawer... My package is:
//From android studio
compile 'com.android.support:appcompat-v7:21.0.0'
I don't know if this can help you, but I follow this greatest tutorial and my navigation drawer work it's similar as you wish!
http://androideity.com/2013/12/16/android-navigation-drawer-parte-1/
http://androideity.com/2014/02/26/android-navigation-drawer-parte-2/
I wait that I help you! Good luck!
PD: If you have a problems with this tutorial or same advice me! :D

At first glance seems that you are setting new drawer listener whenever item is selected, precisely in this snippet:
private class DrawerItemClickListener implements OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//selectItem(position);
final int thePos = position;
mDrawer.setDrawerListener( new DrawerLayout.SimpleDrawerListener(){
#Override
public void onDrawerClosed(View drawerView){
....
}
});
if(mDrawer.isDrawerOpen(GravityCompat.START))
mDrawer.closeDrawer(mDrawerRelativeLayout);
}
}
This snippet replaces ActionBarDrawerToggle (which implements DrawerListener as well), so no calls are made to ActionBarDrawerToggle which controls the icon.
How can I adapt the icon behaviour so that it doesn't change from hamburger to arrow when I click over a drawer option?
Relating to your previous statements, this sound vague to me. Why you'd be preventing this default behaviour? You can prevent morphing by not calling super calls in DrawerListener's methods.

Navigation Drawer with Activities - Basic Concept

I have one basic question that I couldn't get hold in last couple of days (even after many example/explanation in googling and SOing).
I have 5 different Activity , each activity is independent of others, and each activity has it’s own layout file. Now, I want to add Navigation Drawer as my App Menu.
What i understand, 2 recommended ways are:
1) To merge those 5 activities into one MainActivity, and use 5 fragments to load 5 different layout. But it will be a hard for me to merge those 5 into 1. And won't there be any performance issue if I have all methods loaded in one Activity?
2) To have one BaseActivity containing drawer, and extend all other activity to Base Activity. But I have all my Activities extended to NavDrawer class (which contains drawer), but not working. Individually drawer is working fine (when I run NavDrawer only). Do I need to make any change to the layout xmls of my existing activities?
I am sorry if this is pretty much basic, but I am posting this after I failed to get hold the concept in 2 days!
I can attach my code if you want, but the drawer code is sort of basic thing, as per tutorial.
Thanks,
References I am using:
1) http://developer.android.com/training/implementing-navigation/nav-drawer.html
2) http://www.androidhive.info/2013/11/android-sliding-menu-using-navigation-drawer/

I can suggest you to use ViewPager with actionbar tabs. Because with the help of viewpager, the same navigation draawer is visible for all the five fragments. Coming to the efficiency, ViewPager creates current page, besides it always prepares your next and previous pages also. So that it can be bit fast in showing the content while the user swipes pages. I always follow the same and I don't think it's inefficient.
Code snippet of one of my applications is below:
public class MainActivity extends ActionBarActivity {
String[] titles;
ViewPager viewPager;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mListTitles;
public PagerTabStrip titleStrip;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
viewPager = (ViewPager) findViewById(R.id.pager);
TitleAdapter titleAdapter = new TitleAdapter(getSupportFragmentManager());
viewPager.setAdapter(titleAdapter);
viewPager.setCurrentItem(0);
mTitle = mDrawerTitle = getTitle();
mListTitles = getResources().getStringArray(R.array.drawerlist_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// sets up the drawer's list view with items and click listener
mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, mListTitles));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// enables ActionBar app icon to behave as action to toggle nav drawer
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
)
{
public void onDrawerClosed(View view)
{
getSupportActionBar().setTitle(mTitle);
}
public void onDrawerOpened(View drawerView)
{
getSupportActionBar().setTitle(mDrawerTitle);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null)
{
selectItem(0);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu)
{
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
return super.onPrepareOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (mDrawerToggle.onOptionsItemSelected(item))
{
return true;
}
else{
return false;
}
}
class TitleAdapter extends FragmentPagerAdapter{
private String titles[] = new String[]{"Expenses","Savings","Income"};
private Fragment frags[] = new Fragment[titles.length];
public TitleAdapter(FragmentManager fm) {
super(fm);
frags[0] = new Fragment1();
frags[1] = new Fragment2();
frags[2] = new Fragment3();
}
#Override
public CharSequence getPageTitle (int position){
Log.v("TitleAdapter - getPageTitle=", titles[position]);
return titles[position];
}
#Override
public Fragment getItem(int position) {
Log.v("TitleAdapter - getItem=", String.valueOf(position));
return frags[position];
}
#Override
public int getCount() {
return frags.length;
}
}
/* The click listner for ListView in the navigation drawer */
private class DrawerItemClickListener implements ListView.OnItemClickListener
{
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
selectItem(position);
}
}
private void selectItem(int position)
{
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mListTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
#Override
public void setTitle(CharSequence title)
{
mTitle = title;
getSupportActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
#Override
protected void onPostCreate(Bundle savedInstanceState)
{
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig)
{
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
}

How do I use the parameter defined in another class?

I am using a navigation drawer in my main activity defined as
private DrawerLayout drawerlayout;
I am using it in main activity to open and close my nav fragment, but there are 3 specific buttons in nav fragment class where I would like to use the nav fragment functionality drawerlayout.closedrawer(r.id.drawer)
But everytime I define it again in nav fragment class and try to add it in the onclick for these buttons, upon clicking the buttons, the app crashes with a nullpointer exception.How do I go about the same?
Thanks!
Here's the sample code from my app:
public class navfragment extends fragment {
public interface OnCloseDrawerListener
{
void onCloseDrawer();
}
#Override
public void onClick(final View v) {
switch (v.getId()) {
case R.id.button_logout:
final DialogFragment dialog = new LogoutCancelSignoutDialogFragment(mLogoutListener);
dialog.show(getActivity().getSupportFragmentManager(), AbsBaseaActivity.TAG_LOGOUT_DIALOG);
BangoHelper.eventLogout();
((OnCloseDrawerListener)getActivity()).onCloseDrawer();
break;
}
}
In my class MainActivity:
public class MainActivity extends AbsBaseaActivity implements OnBackStackChangedListener {
private DrawerLayout drawerLayout;
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
//----------Code for Navigation Drawer setup
// 2. App Icon
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
// 2.1 create ActionBarDrawerToggle
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout,
R.drawable.arrow_up, R.string.drawer_open, R.string.drawer_close){
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
// getActionBar().setTitle(NavigationPanelFragment.activeFragmentTitle);
// invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
// getActionBar().setTitle(NavigationPanelFragment.activeFragmentTitle);
// invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
// 2.2 Set actionBarDrawerToggle as the DrawerListener
drawerLayout.setDrawerListener(actionBarDrawerToggle);
}
public void onCloseDrawer()
{
drawerLayout.closeDrawer(R.id.drawer);
}
Even after modifying the code as per the given suggestion it crashes when I click on the button defined onclick for the fragment class, any clue?

You could add a callback from your fragment to your activity to close the drawer..
Ex.
public class YourFragment extends Fragment
{
public void onClick(View v)
{
((OnCloseDrawerListener)getActivity()).onCloseDrawer();
}
public interface OnCloseDrawerListener
{
void onCloseDrawer();
}
}
Then in your activity you would need to implement this interface
public class MyActivity extends Activity implements OnCloseDrawerListener
{
#Override
public void onCloseDrawer()
{
// add whatever code you need to close the drawer
}
}
Obviously you can name this interface something that more accurately represents your needs and pass it whatever arguments you require

Disable item in Navigation Drawer

In my Navigation Drawer I have a problem, when it loads anything in the first spot will crash the app, so my solution to this is to set it to a string that changes to say "(appname) Free" or " (appname) Premium", depending on if the premium upgrade was purchased.
I would like this unclickable as it is currently able to be clicked but nothing happens. Ideally this would be a submenu, or title, but I could not figure out how to implement that. Here is a excerpt of my code:
public class myClass extends SherlockActivity implements
OnItemSelectedListener {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;
#SuppressLint("NewApi")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mylayout);
mTitle = mDrawerTitle = getTitle();
if (mIsPremium == true) {
mPlanetTitles = getResources().getStringArray(
R.array.planets_array_prem);
} else {
mPlanetTitles = getResources()
.getStringArray(R.array.planets_array);
}
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// set a custom shadow that overlays the main content when the drawer
// opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
GravityCompat.START);
// set up the drawer's list view with items and click listener
mDrawerList.setAdapter(new ArrayAdapter<String>(this,
R.layout.drawer_list_item, mPlanetTitles));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// enable ActionBar app icon to behave as action to toggle nav drawer
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
public void onDrawerClosed(View view) {
getSupportActionBar().setTitle(mTitle);
supportInvalidateOptionsMenu(); // creates call to
// onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
getSupportActionBar().setTitle(mDrawerTitle);
supportInvalidateOptionsMenu(); // creates call to
// onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
/* The click listener for ListView in the navigation drawer */
private class DrawerItemClickListener implements
ListView.OnItemClickListener {
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
switch (position) {
case 0:
/*
* Toast.makeText( getApplicationContext(),
* "case 0 - A Activity.", Toast.LENGTH_LONG).show(); Intent
* c0 = new Intent(getBaseContext(),
* activity.class); startActivity(c0);
*/break;
case 1:
Toast.makeText(getApplicationContext(),
"case 1 - B Activity", Toast.LENGTH_LONG).show();
Intent c1 = new Intent(getBaseContext(),
ActivityB.class);
startActivity(c1);
break;
default:
}
}
}
public void selectItem(int position) {
switch (position) {
case 0:
// setContentView(R.layout.main);
break;
case 1:
setContentView(R.layout.main);
break;
default:
}
}
#Override
public void setTitle(CharSequence title) {
mTitle = title;
getSupportActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
I do not use fragments, I was going to implement the navigation drawer by doing on click and moving to new activities. I am looking for a solution to my primary problem but would welcome any design tips.
Thank you
Edit
With CommonsWare's help I developed this: but nothing is different in my application. I want the first time (case 0 (position 0)) to be disabled.
public class MyArrayAdapter extends ArrayAdapter<String> {
public MyArrayAdapter(Context context, int position) {
super(context, 0);
}
public boolean areAllItemsEnabled() {
return false;
}
public boolean isEnabled(int position) {
if (position == 0) {
return false;
} else {
return true;
}
}
}

As you already know, since you already read the answer, you need to replace your new ArrayAdapter<String>(this, R.layout.drawer_list_item, mPlanetTitles) with a custom Adapter -- perhaps one extending ArrayAdapter<String> -- where you override areAllItemsEnabled() to return false and isEnabled() to return true or false as needed.
See also:
android - disable listview item click and reenable it
Android ListView child View setEnabled() and setClickable() do nothing