Develop Reference

FindViewByID from another layout

I have a problem.
I create a DrawerLayout and I use it as my MainLayout.
For my menu, I create a nav_header with two TextView.
Of course, when I try to modify the TextView, I got a null object reference, because the TextView are from another layout.
How can I setText for the TextView from another layout (specifically nav_header)?
I tried LayoutInflate but the problem doesn't disappear (probably i set things bad).
Can anyone help me?
MainActivity.java:
public class MainActivity extends AppCompatActivity{
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mToggle;
private NavigationView navigationView;
private TextView logout_txt, name_txt;
private PermissionManager permissionManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final LayoutInflater layoutInflater = getLayoutInflater();
final View view = layoutInflater.inflate(R.layout.nav_header, null);
Log.d("USERNAME: ", ParseUser.getCurrentUser().getUsername());
name_txt = view.findViewById(R.id.txt_username_view);
name_txt.setText(ParseUser.getCurrentUser().getUsername());
ParseInstallation.getCurrentInstallation().saveInBackground();
init();
setUpDrawerContent(navigationView);
}
private void init() {
mDrawerLayout = findViewById(R.id.drawer_layout);
mToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.open, R.string.close);
mDrawerLayout.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
navigationView = findViewById(R.id.nav_view);
logout_txt = findViewById(R.id.logout);
permissionManager = new PermissionManager() {};
permissionManager.checkAndRequestPermissions(this);
name_txt.setText(ParseUser.getCurrentUser().getUsername());
}
Nav_header.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="160dp"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:background="#drawable/main_header_selector"
android:padding="15dp"
tools:context=".MainActivity">
<ImageView
android:src="#drawable/ic_account"
android:layout_width="75dp"
android:layout_height="75dp" />
<TextView
android:id="#+id/txt_username_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textColor="#color/white"
android:textStyle="bold"
android:textSize="20sp" />
<TextView
android:id="#+id/txt_email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="12red.hawk12#gmail.com"
android:textColor="#color/white"
android:paddingTop="5dp"/>
</LinearLayout>
UPDATE:
I tried this code, and the applications starts, but the setText doesn't set text.

You are using a wrong method to use the drawerlayout. You could simply use the Navigation Drawer Activity in Android Studio for creating a navigation drawer. Navigation Drawer Layout automatically creates 4 layout files and a Java file for this purpose. I'm adding them right bellow-
MainActivity.java
package com.example.user.myapplication;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = 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.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_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 = findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
Activity_main.XML
<?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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<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/nav_header_main"
app:menu="#menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
Content_main.XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.user.myapplication.MainActivity"
tools:showIn="#layout/app_bar_main">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
App_bar_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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.user.myapplication.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
app:srcCompat="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
nav_header_main.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"
android:layout_width="match_parent"
android:layout_height="#dimen/nav_header_height"
android:background="#drawable/side_nav_bar"
android:gravity="bottom"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:theme="#style/ThemeOverlay.AppCompat.Dark">
<ImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="#dimen/nav_header_vertical_spacing"
app:srcCompat="#mipmap/ic_launcher_round" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/nav_header_vertical_spacing"
android:text="Android Studio"
android:textAppearance="#style/TextAppearance.AppCompat.Body1" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="android.studio#android.com" />
</LinearLayout>
All the Best.

How to attach fragment to Navigationview

I am using NaivgationView in my app, when i select item from drawer,the view of my fragment which i set is not displaying. i also added toast it shows while i select that item can any one help me with this ?
public class MainActivity extends AppCompatActivity
{
private DrawerLayout drawerLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
//Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
// This method will trigger on item Click of navigation menu
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
FragmentManager fragmentManager = getFragmentManager();
//Checking if the item is in checked state or not, if not make it in checked state
if(menuItem.isChecked()) menuItem.setChecked(false);
else menuItem.setChecked(true);
//Closing drawer on item click
drawerLayout.closeDrawers();
//Check to see which item was being clicked and perform appropriate action
switch (menuItem.getItemId()){
//Replacing the main content with ContentFragment Which is our Inbox View;
case R.id.home:
Toast.makeText(getApplicationContext(),"Inbox Selected", Toast.LENGTH_SHORT).show();
return true;
// For rest of the options we just show a toast on click
case R.id.be_the_donor:
Toast.makeText(getApplicationContext(),"Stared Selected",Toast.LENGTH_SHORT).show();
RegisterDonor frag = new RegisterDonor();
// update the main content by replacing fragments
fragmentManager.beginTransaction()
.replace(R.id.frame_container, frag)
.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
.addToBackStack(null)
.commit();
return true;
case R.id.search_donor:
Toast.makeText(getApplicationContext(),"Send Selected",Toast.LENGTH_SHORT).show();
return true;
case R.id.tools:
Toast.makeText(getApplicationContext(),"Drafts Selected",Toast.LENGTH_SHORT).show();
return true;
default:
Toast.makeText(getApplicationContext(),"Somethings Wrong",Toast.LENGTH_SHORT).show();
return true;
}
}
});
// Initializing Drawer Layout and ActionBarToggle
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.navigation_drawer_open, R.string.navigation_drawer_close){
#Override
public void onDrawerClosed(View drawerView) {
// Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
super.onDrawerClosed(drawerView);
}
#Override
public void onDrawerOpened(View drawerView) {
// Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank
super.onDrawerOpened(drawerView);
}
};
//Setting the actionbarToggle to drawer layout
drawerLayout.setDrawerListener(actionBarDrawerToggle);
//calling sync state is necessay or else your hamburger icon wont show up
actionBarDrawerToggle.syncState();
}
#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.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);
}
}
Fragment
public class RegisterDonor extends Fragment{
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.register_donor, container, false);
return rootView;
}
}
activity_main.xml
<?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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
>
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<FrameLayout
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
</LinearLayout>
<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/nav_header_main"
app:menu="#menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.dayshift.bloodfinder.MainActivity"
tools:showIn="#layout/app_bar_main">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
register_donor
<?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"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.TextInputLayout
android:id="#+id/usernameWrapper"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="#+id/register_donor_username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:hint="Enter Name"/>
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="#+id/mobileWrapper"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="#+id/register_donor_mobile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number"
android:hint="Enter Mobile"/>
</android.support.design.widget.TextInputLayout>
<com.weiwangcn.betterspinner.library.material.MaterialBetterSpinner
android:id="#+id/register_donor_bloodgroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Material Design Spinner"
android:textColorHint="#05ab9a"
app:met_floatingLabel="normal" />
<com.weiwangcn.betterspinner.library.material.MaterialBetterSpinner
android:id="#+id/register_donor_city"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Material Design Spinner"
android:textColorHint="#05ab9a"
app:met_floatingLabel="normal" />
<AutoCompleteTextView
android:id="#+id/register_donor_area"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:text="">
<requestFocus />
</AutoCompleteTextView>
</LinearLayout>

Your app bar occupies the entire screen.
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<FrameLayout
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
Change the app bar to wrap content on the height

In activity_main_drawer write your item with id and title after that in mainactivity in method onNavigationItemSelected for your id declare your fragment and commit

You are telling that the Toasts are showing up but not the fragment so the problem might be the FragmentManager
check you import of fragmentManager which should be
import android.support.v4.app.FragmentManager;
and should not be
import android.app.FragmentManager;
And your fragment transaction should be like this
FragmentManager fragmentManager = getSupportFragmentManager();
RegisterDonor frag = new RegisterDonor();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, frag , "")
.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
.addToBackStack(null)
.commit();
hope this will help you!

Try this way i guess it works fine :
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
int id = menuItem.getItemId();
switch (id) {
case R.id.be_the_donor:
Fragment registerDonor = new RegisterDonor();
fragmentTransaction.replace(R.id.frame_container, registerDonor);
fragmentTransaction.commit();
drawerLayout.closeDrawers();
break;

nav drawer and fragments

I created a NavDrawer Activity with the assistant rather with the tutorial.
Now when I want to open a new fragment it does not replace the main content but prepends it. The textfield should disappear.
I guess I am trying to replace the wrong container. But why is it the wrong one and which is the correct one
ReadActivity.java
public class ReadActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_read);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
//more code...
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 boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_read) {
// Handle the camera action
} else if (id == R.id.nav_settings) {
//the probably wrong
getFragmentManager().beginTransaction()
.replace(R.id.content, new SettingFragment)
.commit();
} else {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
activity_read.xml
<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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
android:id="#id/content"
layout="#layout/app_bar_read"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<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/nav_header_read"
app:menu="#menu/activity_read_drawer" />
</android.support.v4.widget.DrawerLayout>
app_bar_read.xml
<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/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.max.speedread.ReadActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_read" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_menu_paste" />
</android.support.design.widget.CoordinatorLayout>
content_read.xml
<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.max.speedread.ReadActivity"
tools:showIn="#layout/app_bar_read">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/editText"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:minHeight="200dp" />
</RelativeLayout>
SettingsFragment.java
public class SettingFragment extends PreferenceFragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Load the prefrences from XML resource
addPreferencesFromResource(R.xml.prefrences);
}
}
prefrences.xml
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory
android:title="foobar">
<EditTextPreference
android:key="checkbox_prefrence"
android:title="asdf"
android:summary="fdsa"
android:dialogTitle="asdf"/>
</PreferenceCategory>
</PreferenceScreen>
I hope I didn't append too much code :)

Everything is ok with your code, preferences screen is just drawing on top of your old layout.
The solution for this is:
In your content_read
Swap RelativeLayout (this is not necessary, you can just add new framelayout as child to the relative layout) with FrameLayout which will be your holder for fragments
Should look something like this>
content_read.xml
<FrameLayout
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/container"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/container"
android:layout_centerHorizontal="true"
android:layout_marginTop="202dp"
android:gravity="center"
android:text="JUST A RANDOM TEXT INSIDE CONTAINER WHICH WILL BE REPLACED BY SETTINGS FRAGMENT"
android:textAppearance="?android:attr/textAppearanceLarge"/>
</FrameLayout>
Note the FrameLayout has the id of R.id.container
Next Create settings_screen_layout which should look something like this
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimary"
android:orientation="vertical">
<ListView android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
Note that you need a listview with the "#android:id/list" which will act as container for your preferences
In your SettingFragment Override onCreateView like this
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
addPreferencesFromResource(R.xml.prefrences);
View view = inflater.inflate(R.layout.preference_screen_layout, container, false);
return view;
}
and do the transaction
getFragmentManager().beginTransaction()
.replace(R.id.container, new SettingFragment)
.commit();

Android - How to add the parallax effect to navigation background image

I saw the video with below link:ParallaxHeaderViewPager Github: StowableHeaderViewPager and i am very interesting in the parallax effect that background image can move with animation effect. I want to add this function to my project.
Here are my code:
nav_header_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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="190dp"
android:background="#drawable/background_material_red"
android:id="#+id/header_bgdimage"
android:orientation="vertical">
<de.hdodenhof.circleimageview.CircleImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/profile_image"
android:layout_width="70dp"
android:layout_height="70dp"
android:src="#mipmap/ic_profile"
app:border_color="#FF000000"
android:layout_marginLeft="24dp"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginStart="24dp" />
<!--set default name-->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Wang Jian"
android:textSize="14sp"
android:textColor="#FFF"
android:textStyle="bold"
android:gravity="left"
android:paddingBottom="4dp"
android:id="#+id/username"
android:layout_above="#+id/email"
android:layout_alignLeft="#+id/profile_image"
android:layout_alignStart="#+id/profile_image" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="user#host.com"
android:id="#+id/email"
android:gravity="left"
android:layout_marginBottom="8dp"
android:textSize="14sp"
android:textColor="#fff"
android:layout_alignParentBottom="true"
android:layout_alignLeft="#+id/username"
android:layout_alignStart="#+id/username" />
</RelativeLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/nav_tabs"
android:layout_below="#+id/header_bgdimage"
android:elevation="6dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_centerHorizontal="true"
android:minHeight="?attr/actionBarSize"
android:fillViewport="false">
<Button
android:id="#+id/me"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="fill_parent"
android:drawableTop="#drawable/ic_action_user"
android:text="我的"
android:fontFamily="#string/font_fontFamily_medium"
android:textColor="#FFFFFF"
android:background="#0F1E2D" />
<Button
android:id="#+id/redeem"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="fill_parent"
android:drawableTop="#drawable/ic_action_mustache"
android:text="特权"
android:fontFamily="#string/font_fontFamily_medium"
android:textColor="#FFFFFF"
android:background="#0F1E2D"/>
<Button
android:id="#+id/topic"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="fill_parent"
android:drawableTop="#drawable/ic_action_dialog"
android:text="话题"
android:textColor="#FFFFFF"
android:fontFamily="#string/font_fontFamily_medium"
android:background="#0F1E2D" />
<Button
android:id="#+id/favorite"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="fill_parent"
android:drawableTop="#drawable/ic_action_heart"
android:text="收藏"
android:fontFamily="#string/font_fontFamily_medium"
android:textColor="#FFFFFF"
android:background="#0F1E2D"/>
</LinearLayout>
</RelativeLayout>
Now i want my navigation background image android:background="#drawable/background_material_red" can have parallax effect.
Here is my java code:NavigationActivity
public class NavigationActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
NavigationView navigationView = null;
Toolbar toolbar = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Set the fragment initially
PersonalFragment fragment = new PersonalFragment();
android.support.v4.app.FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
fragmentTransaction.commit();
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
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) findViewById(R.id.nav_view);
//How to change elements in the header programmatically
View headerView = navigationView.getHeaderView(0);
TextView ProfileText = (TextView) headerView.findViewById(R.id.email);
ProfileText.setText("马来西亚第一");
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.tools_bar, 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;
}
if(id == R.id.action_search){
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
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_profile) {
PersonalFragment fragment = new PersonalFragment();
android.support.v4.app.FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
fragmentTransaction.commit();
setTitle(R.string.title_home);
} else if (id == R.id.nav_award) {
AwardFragment fragment = new AwardFragment();
android.support.v4.app.FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
fragmentTransaction.commit();
setTitle(R.string.title_award);
} else if (id == R.id.nav_others) {
OthersFragment fragment = new OthersFragment();
android.support.v4.app.FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
fragmentTransaction.commit();
setTitle(R.string.title_others);
} else if (id == R.id.nav_manage) {
setTitle(R.string.title_tools);
} else if (id == R.id.nav_setting) {
setTitle(R.string.title_setting);
} else if (id == R.id.nav_about) {
setTitle(R.string.title_about);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}`
I'm a newbie at this stuff so any help will be appreciated. Thanks in Advance!

Here's a cool library for parallax animation. I use this in my many of projects. It's easy to implement. Also if you check code you can understand how you can make parallax effect by yourself.
https://github.com/ksoichiro/Android-ObservableScrollView

There is an "official" solution for what you want to achive in the google design library, with an App Bar and a CollapsingToolbarLayout.
There's a great guide on this blog:

Custom ImageView button not working in Toolbar

I am using v7 Toolbar for ActionBar. I am using a ToggleButton in Toolbar with images. I cannot capture any click events on Toolbar neither ToggleButtonnor Navigation Drawer button.
Here is my code (OnCreate method):
#Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.home_screen);
mToolbar = (Toolbar)findViewById(R.id.toolbar);
tv_on= (TextView) findViewById(R.id.tv_on);
toggleButton= (ImageView)findViewById(R.id.toggle);
if (mToolbar != null) {
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
// displayView(0);
tv_on.setText("OFF");
checked=false;
android.app.FragmentManager fragmentManager = getFragmentManager();
android.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
FragmentOff off = new FragmentOff();
fragmentTransaction.add(R.id.fragment_container, off, "HELLO");
fragmentTransaction.commit();
toggleButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (checked == false) {
tv_on.setText("ON");
android.app.FragmentManager fragmentManager = getFragmentManager();
android.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
FragmentOff off = new FragmentOff();
fragmentTransaction.add(R.id.fragment_container, off, "HELLO");
fragmentTransaction.commit();
checked = true;
} else {
tv_on.setText("ON");
android.app.FragmentManager fragmentManager = getFragmentManager();
android.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
FragmentOn on = new FragmentOn();
fragmentTransaction.add(R.id.fragment_container, on, "HELLO");
fragmentTransaction.commit();
}
}
});
Toolbar.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:local="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:background="#D92027"
local:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
local:popupTheme="#style/ThemeOverlay.AppCompat.Light" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/work_status"
android:textColor="#ffffff"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/toggle"
android:layout_toStartOf="#+id/toggle"
android:layout_marginRight="16dp"
android:id="#+id/tv_work" />
<ImageView
android:id="#+id/toggle"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/off"
android:layout_marginRight="35dp"
android:layout_marginEnd="35dp"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_on"
android:text="#string/off"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="5dp"
android:textColor="#ffffff"/>
</RelativeLayout>
</android.support.v7.widget.Toolbar>
home_screen.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
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">
<include
layout="#layout/toolbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:id="#+id/fragment_container"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_below="#+id/toolbar"/>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="#+id/fragment_navigation_drawer"
android:name="com.webninjaz.fragment.FragmentDrawer"
android:layout_width="#dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layout="#layout/fragment_navigation_drawer"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
</RelativeLayout>
Can anyone please point out what I am doing wrong. Even I can't debug onClickListener.

You can put image and button inside toolbar you need to use AppBar layout
http://blog.grafixartist.com/toolbar-animation-with-android-design-support-library/
Please refer this link.Hope its works.

please change from
mToolbar = (Toolbar)findViewById(R.id.toolbar);
tv_on= (TextView) findViewById(R.id.tv_on);
toggleButton= (ImageView)findViewById(R.id.toggle);
to
mToolbar = (Toolbar)findViewById(R.id.toolbar);
tv_on= (TextView) mToolbar.findViewById(R.id.tv_on);
toggleButton= (ImageView)mToolbar.findViewById(R.id.toggle);

Thanks everyone for help but I re-implemented my navigation drawer and toolbar and now everything is working fine.This was probably a bug with navigation drawer template provided by Android Studio