We Keep Coding

Test Banner Ad doesn't show

I'm trying to load a banner Ad just for practice. But the ad doesn't show up.
-xml code
<?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"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<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" />
<com.google.android.gms.ads.AdView
android:id="#+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
ads:adSize="BANNER"
ads:adUnitId="ca-app-pub-3940256099942544/6300978111" />
</LinearLayout>
I filled the ads:adUnitId with the test banner unit Id from here
-MainActivity.java
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.RequestConfiguration;
import com.google.android.gms.ads.initialization.InitializationStatus;
import com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
import java.util.Arrays;
import java.util.List;
import static com.google.android.gms.ads.MobileAds.initialize;
public class MainActivity extends AppCompatActivity {
private AdView mAdView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MobileAds.initialize(this, new OnInitializationCompleteListener() {
#Override
public void onInitializationComplete(#NonNull #org.jetbrains.annotations.NotNull InitializationStatus initializationStatus) {
}
});
/*
List<String> testDeviceIds = Arrays.asList("")
RequestConfiguration configuration = new RequestConfiguration.Builder().setTestDeviceIds(testDeviceIds).build();
MobileAds.setRequestConfiguration(configuration);*/
mAdView = findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder()
.build();
mAdView.loadAd(adRequest);
}
}
The annotated part is one solution I found from google but I couldn't get the message like below so I couldn't fill it.
I/Ads: Use RequestConfiguration.Builder.setTestDeviceIds(Arrays.asList("33BE2250B43518CCDA7DE426D04EE231"))
to get test ads on this device."
-build.gradle(:app)
plugins {
id 'com.android.application'
}
android {
compileSdkVersion 31
buildToolsVersion "30.0.3"
defaultConfig {
applicationId "com.***"
minSdkVersion 19
targetSdkVersion 31
versionCode 1
versionName "1.0"
multiDexEnabled true
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation 'androidx.multidex:multidex:2.0.1'
implementation 'androidx.appcompat:appcompat:1.4.0'
implementation 'com.google.android.material:material:1.6.1'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
implementation 'com.google.android.gms:play-services-ads:21.5.0'
implementation 'org.jetbrains:annotations:15.0'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}
-build.gradle(:project)
buildscript {
repositories {
google()
mavenCentral()
}
dependencies {
classpath "com.android.tools.build:gradle:4.2.1"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
mavenCentral()
jcenter() // Warning: this repository is going to shut down soon
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
-Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="***">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.***">
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="***"/>
<activity android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I filled the android:value="***" with the app id which I made at AdMob.
There is no error in running app, but the Ad doesn't show up. At logcat I get a message below
I/Ads: Ad failed to load : 0
Also I get an error below
E/DynamiteModule: Failed to load IDynamiteLoader from GmsCore: Application package com.google.android.gms not found
How should I solve this problem? Sorry for duplicated or unnecessary codes.

Add this to your manifest
<uses-permission android:name="android.permission.INTERNET"/>
And also this
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-3940256099942544~3347511713" />

Android WebView can't display both video tags on WebRTC Peer connection

I've created a Webview on android, with all required permissions on Manifest, and then I tried to display a site with a WebRTC peer connection sample. But it can't display both videos. It shows only the caller and not the recipients.
Android Screen Preview
website in WebView: https://webrtc.github.io/samples/src/content/peerconnection/pc1/
Device: samsung SM-T280
Android: 5.1.1
API: 22
ABI: armeabi-v7a
Play Store:
Android System WebView: Version 73.0.3683.90
Module gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.webview"
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
Project gradle:
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.3.2'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
MainActivity.java:
package com.example.webview;
import android.annotation.SuppressLint;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.PermissionRequest;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
protected WebView webView;
protected Button button;
protected WebSettings settings;
#Override
#SuppressLint("SetJavaScriptEnabled")
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = findViewById(R.id.web1);
settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setDomStorageEnabled(true);
settings.setMinimumFontSize(10);
settings.setLoadWithOverviewMode(true);
settings.setUseWideViewPort(true);
settings.setBuiltInZoomControls(true);
settings.setDisplayZoomControls(false);
webView.setWebChromeClient(new WebChromeClient() {
#Override
public void onPermissionRequest(final PermissionRequest request) {
request.grant(request.getResources());
}
});
webView.reload();
webView.loadUrl("https://webrtc.github.io/samples/src/content/peerconnection/pc1/");
button = findViewById(R.id.button);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
webView.reload();
}
});
}
}
activity_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"
tools:context=".MainActivity">
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="Refresh"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<WebView
android:id="#+id/web1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" >
</WebView>
</android.support.constraint.ConstraintLayout>
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.webview">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.BROADCAST_STICKY" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I expect both video tags to display the stream.

setting mediaPlaybackRequiresUserGesture as false fixed the issue for me.
settings.mediaPlaybackRequiresUserGesture=false

Just a minor correction, it is -
settings.setMediaPlaybackRequiresUserGesture(false);
and not really -
settings.mediaPlaybackRequiresUserGesture=false;

Google Play Store is missing (Firebase Authentication)

I'm beginner for using the Firebase. Currently, I'm trying to do the Firebase Authentication and learnt it from Youtube
(https://www.youtube.com/watch?v=oi-UAwiBigQ&index=9&list=PLGCjwl1RrtcTXrWuRTa59RyRmQ4OedWrt)
but it shows me
W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.
W/GooglePlayServicesUtil: Google Play Store is missing.
Here is my code
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.INTERNET" />
<application
android:name=".FireApp"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".AccountActivity"></activity>
</application>
FireApp.java
package com.google.firebasetester;
import android.app.Application;
import com.firebase.client.Firebase;
public class FireApp extends Application {
#Override
public void onCreate() {
super.onCreate();
Firebase.setAndroidContext(this);
}
}
MainActivity.java
package com.google.firebasetester;
import android.accounts.Account;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.firebase.client.ChildEventListener;
import com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;
import com.firebase.client.ValueEventListener;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import java.util.ArrayList;
import java.util.Map;
public class MainActivity extends AppCompatActivity {
private EditText mEmailField;
private EditText mPasswordField;
private Button mLoginBtn;
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthListener;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//FirebaseAuth setup
mAuth=FirebaseAuth.getInstance();
mEmailField = (EditText) findViewById(R.id.emailField);
mPasswordField = (EditText) findViewById(R.id.passwordField);
mLoginBtn = (Button) findViewById(R.id.loginBtn);
mAuthListener =new FirebaseAuth.AuthStateListener() {
#Override
public void onAuthStateChanged(#NonNull FirebaseAuth firebaseAuth) {
//if equal to null means user have not login, cannot find any user
//if(firebaseAuth.getCurrentUser()==null)
//user has login
if(firebaseAuth.getCurrentUser()!=null)
{
startActivity(new Intent(MainActivity.this, AccountActivity.class));
}
}
};
mLoginBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//click when user click on login button
startSignIn();
}
}
);
}
#Override
protected void onStart()
{
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
}
private void startSignIn()
{
String email=mEmailField.getText().toString();
String password=mPasswordField.getText().toString();
//to make sure user not blank the field
if(TextUtils.isEmpty(email)||TextUtils.isEmpty(password)) {
Toast.makeText(MainActivity.this, "Fields are empty.", Toast.LENGTH_LONG).show();
}
else
{
mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
//user not successful login
if (!task.isSuccessful()) {
Toast.makeText(MainActivity.this, "Sign in Problem", Toast.LENGTH_LONG).show();
}
}
});
}
}
}
AccountActivity.java
package com.google.firebasetester;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class AccountActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_account);
}
}
activity_account.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:id="#+id/activity_account"
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"
tools:context="com.google.firebasetester.AccountActivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:text="Account"
android:ems="10"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="184dp"
android:id="#+id/editText" />
</RelativeLayout>
activity_main.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:id="#+id/activity_main"
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"
tools:context="com.google.firebasetester.MainActivity"
android:padding="20dp">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:ems="10"
android:layout_below="#+id/emailField"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="61dp"
android:id="#+id/passwordField"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:hint="Password" />
<Button
android:text="Login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/passwordField"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="110dp"
android:layout_marginStart="110dp"
android:layout_marginTop="31dp"
android:id="#+id/loginBtn" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
android:id="#+id/emailField"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:hint="Email" />
</RelativeLayout>
build.gradle(Project:FirebaseTester)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.2'
classpath 'com.google.gms:google-services:3.0.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle(Module:app)
apply plugin: 'com.android.application'
android {
compileSdkVersion 24
buildToolsVersion "24.0.2"
defaultConfig {
applicationId "com.google.firebasetester"
minSdkVersion 16
targetSdkVersion 24
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
packagingOptions {
exclude 'META-INF/NOTICE' // will not include NOTICE file
exclude 'META-INF/LICENSE' // will not include LICENSE file
// as noted by #Vishnuvathsan you may also need to include
// variations on the file name. It depends on your dependencies.
// Some other common variations on notice and license file names
exclude 'META-INF/notice'
exclude 'META-INF/notice.txt'
exclude 'META-INF/license'
exclude 'META-INF/license.txt'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:24.2.1'
compile 'com.google.firebase:firebase-database:9.8.0'
compile 'com.google.firebase:firebase-crash:9.8.0'
compile 'com.google.firebase:firebase-auth:9.8.0'
compile 'com.firebase:firebase-client-android:2.5.2'
compile 'com.google.firebase:firebase-core:9.8.0'
testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'
Android Project
Please help me solve the problem. Thank you!

I had as well the same problem. I've run the application every time on the emulator, were the error occurs. After I run it on a real device, the problem was solved and the login works without any errors.
My tip, try to run it on a real device.

I believe it's because your emulator doesn't have an updated version of Google Play Services. Run the application on your physical phone as GPS updates automatically on that. It might also be because Google Play Services isn't on you emulator.

Google Map : Error inflating class fragment

I am getting this error while adding a map to my application and I don't understand why am I getting this error. I am trying to solve it for 2 days now but couldn't solve it. I am so much frustrated because of this. Please help me with this. I'll really appreciate any help. I followed steps from Google's official website. Here is what I did :
I created a new Google Map Activity, so, most of the code was automatically included. After that, I downloaded the key from console.developers.google.com.
MapsActivity.java :
package com.example.sybilnaushad.mapdemo;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// Add a marker in Sydney and move the camera
LatLng sydney = new LatLng(-34, 151);
mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
}
}
AndroidManifest.xml :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.sybilnaushad.mapdemo">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="#string/google_maps_key" />
<activity
android:name=".MapsActivity"
android:label="#string/title_activity_maps">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
activity_maps.xml :
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.sybilnaushad.mapdemo.MapsActivity" />
build.gradle (Module : app) :
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.example.sybilnaushad.mapdemo"
minSdkVersion 17
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.google.android.gms:play-services:8.4.0'
}
This is the error :
android.view.InflateException: Binary XML file line #1: Error inflating class fragment

Just replace this .
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"
android:name="com.example.sybilnaushad.mapdemo.MapsActivity"
/>
And Add both
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Edit
<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=".MapsActivity" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"
/>
</RelativeLayout>
Update your manifest
<permission
android:name="com.example.sybilnaushad.mapdemo.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.sybilnaushad.mapdemo.permission.MAPS_RECEIVE" />

Cannot resolve symbol R in android studio 1.2.2 on windows 8

While I am trying to run or debug the code,it shows the error- cannot resolve symbol R.
Solution I have tried,
clean project
Sync project with gradle file
Invalidate caches/restart..
restart android studio and laptop
Android-sdk build tools 22
I have posted code of different files below. Hope anyone can find the solution.
activity_login_with_fb.xml
<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"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context="com.example.xyz.phase1.loginWithFb">
<com.facebook.login.widget.LoginButton
android:id="#+id/login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="30dp"
android:layout_marginBottom="30dp" />
AndroidMainfest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.xyz.phase1" >
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".openingActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".loginWithFb"
android:label="#string/title_activity_login_with_fb" >
</activity>
<meta-data android:name="com.facebook.sdk.ApplicationId"
android:value="#string/facebook_app_id"/>
<activity android:name="com.facebook.FacebookActivity"
android:configChanges=
"keyboard|keyboardHidden|screenLayout|screenSize|orientation"
android:theme="#android:style/Theme.Translucent.NoTitleBar"
android:label="#string/app_name" />
</application>
</manifest>
build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "com.example.xyz.phase1"
minSdkVersion 18
targetSdkVersion 22
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:appcompat-v7:22.+'
compile 'com.android.support:support-v4:22.0.0'
compile 'com.facebook.android:facebook-android-sdk:4.1.0'
compile project(':facebook')
}
loginWithfb.java
public class loginWithFb extends FragmentActivity
{
CallbackManager callbackManager;
AccessTokenTracker accessTokenTracker;
AccessToken accessToken;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_with_fb);
FacebookSdk.sdkInitialize(this.getApplicationContext());
callbackManager = CallbackManager.Factory.create();
accessTokenTracker = new AccessTokenTracker() {
#Override
protected void onCurrentAccessTokenChanged(
AccessToken oldAccessToken,
AccessToken currentAccessToken) {
// Set the access token using
// currentAccessToken when it's loaded or set.
}
};
// If the access token is available already assign it.
accessToken = AccessToken.getCurrentAccessToken();
}
#Override
public View onCreateView(
LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_login_with_fb, container,
false);
LoginButton loginButton=(LoginButton)view.findViewById(R.id.login_button);
loginButton.setReadPermissions("user_friends");
// Callback registration
loginButton.registerCallback(callbackManager,
new FacebookCallback<LoginResult>() {
#Override
public void onSuccess(LoginResult loginResult) {
}
#Override
public void onCancel() {
}
#Override
public void onError(FacebookException e) {
}
});
return view;
}
}

I found the solution (in my case). My problem was that the path to the project was to long - some of the folders path were more than 255 char (I thought that that was only a problem in the late 90'). Everything compiles after I moved the project to another path (a short path)