On this new project, when setting a toolbar into the main activity java file, it gets the error on
"setSupportActionBar(mToolbar)" saying "getSupportActionBar() in
AppCompatActivity cannot be applyed to
(android.support.v7.widget.Toolbar)"
On similar questions, the answers was just to change from "import android.widget.Toolbar" to "import android.support.v7.widget.Toolbar" which is already set.
The main activity xml is this:
<?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:background="#color/colorAccent"
tools:context=".MainActivity">
<include
android:id="#+id/main_page_toolbar"
layout="#layout/app_bar_layout"
>
</include>
</RelativeLayout>
The toolbar I'm trying to insert is:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/main_app_bar"
android:background="#color/colorPrimary"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.v7.widget.Toolbar>
And the main java file:
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
public class MainActivity extends AppCompatActivity {
private Toolbar mToolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = findViewById(R.id.main_page_toolbar);
getSupportActionBar(mToolbar);
getSupportActionBar().setTitle("WhatsApp");
}
}
Am I missing something? A compatibility set?
Looks like it's a typo, and you're calling getSupportActionBar() (with a g) instead of setSupportActionBar().
You need to use setSupportActionBar() to configure toolbar in the activity:
public class MainActivity extends AppCompatActivity {
private Toolbar mToolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = findViewById(R.id.main_page_toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setTitle("WhatsApp");
}
}
Related
I need your help to understand the concept of menu in android.
I am using a navigation menu(bar) in android and load it on the MainActivity and put three different fragments.
On app start the navigation menu opened and default fragment also loaded as mentioned below.
Here everything is ok, but when i click on the third menu option (Credit Cards) then a fragment opened in that fragment, i am using ListView as mentioned below:
Now i want the add button on the bar, here you can see its below the bar.
How i can achive this? please help me out. Here i want the burger icon for navigation at left side and add icon/button at right side on same bar.
Note: I tried to add the button on the toolbar i am using inside the DrawerLayout but this button appears on all the fragments.
Here is the code for activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.ac 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=".MainActivity"
android:id="#+id/drawer_layout"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
android:id="#+id/toolbar"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
>
</android.support.v7.widget.Toolbar>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragement_container"/>
</LinearLayout>
<android.support.design.widget.NavigationView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:id="#+id/nav_view"
app:headerLayout="#layout/nav_header"
app:menu="#menu/drawer_menu" >
</android.support.design.widget.NavigationView>
</android.support.v4.widget.ac>
MainActivity.java
package com.mas.mas;
import android.os.Bundle;
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.MenuItem;
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
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);
drawerLayout = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
ActionBarDrawerToggle drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.nagivation_drawer_open, R.string.nagivation_drawer_close);
drawerLayout.addDrawerListener(drawerToggle);
drawerToggle.syncState();
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new TransactionsListFragment()).commit();
setTitle("Transactions");
navigationView.setCheckedItem(R.id.transactions);
}
}
#Override
public void onBackPressed() {
if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.transactions:
getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new TransactionsListFragment()).commit();
setTitle("Email");
break;
case R.id.banks:
// getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new MessageFragement()).commit();
setTitle("Banks");
break;
case R.id.cards:
setTitle("Cards");
getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new CardsFragment()).commit();
break;
}
drawerLayout.closeDrawer(GravityCompat.START);
return true;
}
}
Thanks.
Add button in tool bar in mainActivity
<androidx.appcompat.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">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/adimage"
android:layout_marginBottom="#dimen/padd_10"
android:layout_marginTop="#dimen/padd_10"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ad"></ImageView>
</RelativeLayout>
then use this for onClick Listner In mainActivity.java
Toolbar toolbar = findViewById(R.id.toolbar);
adsImageView=toolbar.findViewById(R.id.adimage);
adsImageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
}
hope it helps
I want to set a custom toolbar with a back arrow (to go to the previous activity, which in this case is always back to main activity) for all activities except main activity.
As read from a couple of posts, I have created a custom toolbar activity and here is the code:
activity_toolbar_back_arrow.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".ToolbarBackArrow">
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
app:title="My First App"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:id="#+id/toolbar_back_arrow"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"/>
</LinearLayout>
ToolbarBackArrow.class
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import androidx.appcompat.widget.Toolbar;
public class ToolbarBackArrow extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_toolbar_back_arrow);
Toolbar toolbar = findViewById(R.id.toolbar_back_arrow);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
}
Now an another activity is created that extends the above custom activity:
VisionMission.java
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.os.Bundle;
public class VisionMission extends ToolbarBackArrow {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_vision_mission);
}
}
In the activity_vision_mission.xml, I have some code specific to just that activity.
As per the solutions, I read this should create a toolbar in the VisionMission activity, but it is not. What am I missing?
In manifest, I have made theme as No ActionBar for all the activities.
No need to go for custom toolbar if your only requirement is back button.
In your manifest.xml file for the specified activity,
<activity
android:name="com.example.app_name.A" ...>
...
</activity>
<!-- A child of the main activity -->
<activity
android:name=".B"
android:label="B"
android:parentActivityName="the activity to go on back click" >
<!--android:parentActivityName="com.examle.myparentactivity" -->
<!-- Parent activity meta-data to support 4.0 and lower -->
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.app_name.A" />
</activity>
It will automatically show the back button with desired behaviour.
It's because in your ToolbarBackArrow you are setting your layout first and then in VisionMission you're resetting the layout and old layout with your toolbar is being replaced by another call to setContentView. To achieve desired result use includes:
include_toolbar.xml:
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
app:title="My First App"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:id="#+id/toolbar_back_arrow"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"/>
activity_vision_mission.xml:
<LinearLayout
...>
<include layout="#layout/include_toolbar" />
... Your other views ...
</LinearLayout>
and in super class ToolbarBackArrow
public class ToolbarBackArrow extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Not needed anymore
// setContentView(R.layout.activity_toolbar_back_arrow);
Toolbar toolbar = findViewById(R.id.toolbar_back_arrow);
// always check because you can forget to add an 'include' and
// toolbar will be null here, so you'll get NullPointerException
if (toolbar != null) {
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
}
}
It's apparently a question that has been asked multiple times, but only has solutions on a case-by-case basis.I am making an aap with toolbar and when i go to second activity i want the toolbar to display icon as well as settings menu but unfortunately toolbar is appearing but icons are not showing also android monitor shows null pointer exception on these lines of code
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
Error pic
This is my activity_main
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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.example.zaina.toolbar.MainActivity">
<include android:id="#+id/aap_bar" layout="#layout/aap_bar"></include>
<TextView
android:layout_below="#id/aap_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
</RelativeLayout>
This is my MainActivity.java
package com.example.zaina.toolbar;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.aap_bar);
setSupportActionBar(toolbar);
}
#Override
public boolean onCreateOptionsMenu(Menu item) {
getMenuInflater().inflate(R.menu.menu_main, item);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem menuItem){
int id=menuItem.getItemId();
if(R.id.action_favorite==id){
startActivity(new Intent(this,aap.class));
return true;
}
if(R.id.action_settings==id){
Toast.makeText(MainActivity.this, "Hey you hit", Toast.LENGTH_SHORT).show();
return true;
}
return onOptionsItemSelected(menuItem);
}
}
This is my aapbar_xml.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:aap="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="#color/colorPrimary"
aap:Theme="#style/MyCustom"
app:popupTheme="#style/ThemeOverlay.AppCompat.Dark">
</android.support.v7.widget.Toolbar>
This is my activity_aap.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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.example.zaina.toolbar.aap">
<include android:id="#+id/app_bar" layout="#layout/aap_bar"></include>
</RelativeLayout>
This is aap.java
package com.example.zaina.toolbar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
public class aap extends AppCompatActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_aap);
Toolbar toolbar= (Toolbar) findViewById(R.id.aap_bar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
}
#Override
public boolean onCreateOptionsMenu(Menu item) {
getMenuInflater().inflate(R.menu.menu_sub, item);
return true;
}
}
This is my menu_sub.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:aap="http://schemas.android.com/apk/res-auto">
<item android:id="#+id/za"
android:icon="#drawable/ic_chevron_left_black_24dp"
android:title="left"
aap:showAsAction="ifRoom"/>
<item android:id="#+id/zee"
android:title="sett"
aap:showAsAction="never"/>
</menu>
There may be few reasons of NullPointException, try to:
You are probably using a Theme that doesn't support ActionBar.
Trying using this theme:
android:theme="#android:style/Theme.Holo.Light".
try to catch:
if (getSupportActionBar() != null)
{
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
}
Or, try to change the id of app_bar in aap.java
findViewById method returning null.
Add id attribute to your toolbar
android:id="#+id/aap_bar
You are also using wrong namespace aap
Use app
xmlns:app="http://schemas.android.com/apk/res-auto"
After getting past the earlier problem (Getting 'The method setSupportActionBar(Toolbar) in the type AppCompatActivity is not applicable for the arguments (Toolbar)' in my AppCompatActivity), now setSupportActrionBar() is crashing. Again, here is the relevant code:
import android.support.v7.widget.Toolbar;
public class FivetoGo extends AppCompatActivity {
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
.
.
.
and the layout:
<?xml version='1.0' encoding='UTF-8' ?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.support.v7.widget.Toolbar
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ff6d7fe2"
android:minHeight="?android:attr/actionBarSize"
app:contentInsetEnd="0dp"
app:contentInsetStart="0dp" >
</android.support.v7.widget.Toolbar>
.
.
.
</RelativeLayout>
It turns out that all I needed was to change the parent theme from Theme.AppCompat.Light to Theme.AppCompat.Light.NoActionBar.
public class MainActivity extends AppCompatActivity {
private Toolbar mToolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar); //not working
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
the error occurred is setSupportActionBar(android.support.v7.widget.Toolbar) in AppCompactActivity cannot be applied to android.widget.toolbar,my toolbar.xml is given below
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
local:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
local:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
you must import
import android.support.v7.widget.Toolbar;
not
android.widget.toolbar
Error:
setSupportActionBar(android.support.v7.widget.Toolbar) in
AppCompactActivity cannot be applied to android.widget.toolbar,my
toolbar.xml
You are getting this error becuase you have used android.support.v7.widget.Toolbar in XML while you are importing android.widget.toolbar in your Activity.
Try
setActionBar(mToolbar);
instead of
setSupportActionBar(mToolbar);
or
import Toolbar from android.support.v7.widget package.
import android.support.v7.widget.Toolbar