I'm sure i'm not doing something weird or wrong last night. Last night, I'm still able to Toast.makeText(getApplicationContext(), "Some String", Toast.LENGTH_SHORT);
But this morning, When I try to debug it again for make sure the application still work like the last test, It show up an error. "Unresolvable...".
When I check my MainActivity.java code, the getApplicationContext() is red text. (I'm using material ui theme and red text mean error). Then i try to retype it. but, it's not showing the auto-complete of getApplicationContext() or kind of that. I'm not sure what's wrong with my code. I try it in the new project, and it's work fine.
Here's My Files Code :
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.belajar.belajar1">
<uses-permission android:name="android.permission.INTERNET" />
<application
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>
</application>
</manifest>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
tools:context="com.belajar.belajar1.MainActivity" android:weightSum="1">
<EditText android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textDirection="firstStrong"
android:hint="Title"
android:id="#+id/inputTitle"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="0sp"
android:layout_weight="1"
android:gravity="top"
android:hint="Your Note"
android:id="#+id/inputContent"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="SAVE"
android:onClick="cmdProcess"/>
</LinearLayout>
MainActivity.java
package com.belajar.belajar1;
import android.widget.Toast;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
import com.google.firebase.database.*;
import java.util.HashMap;
import java.util.Map;
public class MainActivity extends AppCompatActivity
{
DatabaseReference root = FirebaseDatabase.getInstance().getReference();
DatabaseReference TestLab1;
EditText mInputTitle, mInputContent;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mInputTitle = (EditText)findViewById(R.id.inputTitle);
mInputContent = (EditText)findViewById(R.id.inputContent);
Toast.makeText(getApplicationContext(), "Some String", Toast.LENGTH_SHORT).show();
}
public void cmdProcess(View v)
{
Map<String, Object> conditionalMap = new HashMap<>();
Map<String, Object> map = new HashMap<String, Object>();
map.put(root.push().getKey(),
new Note(mInputTitle.getText().toString(),mInputContent.getText().toString()));
if (TestLab1 == null)
{
conditionalMap.put("TestLab1", map);
root.updateChildren(conditionalMap);
}
else
{
TestLab1.updateChildren(map);
}
}
#Override
protected void onStart()
{
super.onStart();
root.addValueEventListener(new ValueEventListener()
{
#Override
public void onDataChange(DataSnapshot dataSnapshot)
{
if (!dataSnapshot.hasChild("TestLab1"))
{
TestLab1 = null;
}
else if (dataSnapshot.hasChild("TestLab1"))
{
TestLab1 = dataSnapshot.child("TestLab1").getRef();
}
}
#Override
public void onCancelled(DatabaseError databaseError)
{
}
});
}
}
ScreenShot Evidence :
I saw that you are using android studio.
Sometimes this weird problem happens, a project clean solves the problem for me.
If you're sure about your code is correct, this seems to be an IDE problem, try clean project and invalid IDE cache.
Related
I have a web view app that works perfectly fine on most android phones, but while testing, some said that the app even won't open for the first time after installation.
It keeps on showing the error as below :
"Keeps Stopping"
And in some mobile devices, it says "Runtime Exception" and crashes without even opening.
This was a debug APK, so in an attempt of trying to fix it, I even generated a signed APK. Still no luck.
Here is my whole Code:
Activity Main.XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<WebView
android:layout_width="match_parent"
android:id="#+id/webviewid"
android:layout_height="match_parent"
android:overScrollMode="never"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
</WebView>
</RelativeLayout>
AndroidManifest.Xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.xxxxxxxxxxxxx;">
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" ></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" ></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_roundffd"
android:supportsRtl="true"
android:theme="#style/Theme_xxxxxx"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize">
<activity
android:name=".MainActivity"
android:windowSoftInputMode="adjustResize"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Mainactivity.java
package com.xxxxxxxxxxxxx;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.accessibilityservice.AccessibilityService;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
import android.os.Handler;
import android.webkit.GeolocationPermissions;
import android.webkit.WebChromeClient;
import android.content.Context;
import android.net.ConnectivityManager;
public class MainActivity extends AppCompatActivity {
private WebView webView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = findViewById(R.id.webviewid);
webView.setWebViewClient(new WebViewClient());
webView.loadUrl("https://www.some.com/");
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setGeolocationEnabled(true);
webView.setWebChromeClient(new WebChromeClient() {
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
});
}
// On double back press stuff starts --------------------------------------------------
private boolean doubleBackToExitPressedOnce = false;
#Override
protected void onResume() {
super.onResume();
// .... other stuff in my onResume ....
this.doubleBackToExitPressedOnce = false;
}
#Override
public void onBackPressed() {
if (doubleBackToExitPressedOnce) {
super.onBackPressed();
return;
}
if(webView.canGoBack()){
webView.goBack();
}
}
}
Please note that the app works completely fine, It installs and opens with no issues, but when it comes to some phones, I am getting this "Keeps Stopping" error.
As per some blogs, I even tried uninstalling updates from the Android Web View setting, yet still no use.
Any help or suggestion is greatly appreciated.
can you remove the 'smallestscreensize' in android:configChanges in manifest file and let us know.
I wrote simplw android program to play sound and it's not working . Have no idea why .
maybe it's related to the fact that i have question mark near mymp3 file ( under raw directory ).
I tried few options without any suseess .
Attached below is my code , thanks in advance .
xml file
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="16dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="16dp"
android:background="#CFEC89"
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" />
<Button
android:layout_width="200dp"
android:layout_height="80dp"
android:id="#+id/sound"
android:layout_marginTop="1dp"
android:layout_marginBottom="1dp"
android:layout_marginLeft="1dp"
android:layout_marginRight="1dp"
android:layout_gravity="center"
android:text="Sound"
android:textSize="30sp"
android:background="#EAE3E3"
/>
</LinearLayout>
main acitivy java
package com.example.playsound;
import androidx.appcompat.app.AppCompatActivity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity implements View.OnClickListener
{
// define my variables
Button sound;
final MediaPlayer mp = MediaPlayer.create(this,R.raw.cat);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void onClick(View v)
{
mp.start();
}
}
and my manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.playsound">
<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.PlaySound">
<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>
First of all, delete your TextView it could lay over your Button. That's why you probably can't click it.
Paste that in your class:
package com.example.playsound;
import androidx.appcompat.app.AppCompatActivity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final MediaPlayer mp = MediaPlayer.create(this, R.raw.cat);
final Button sound = (Button) this.findViewById(R.id.sound);
sound.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mp.start();
}
});
}
}
For the future, you need to define your variables in the OnCreate and not above.
Whenever I install and run my app in the Android Studio emulator all I get is a white screen and the tool bar above it even though in the preview it works completely fine. Heres the 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"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:background="#drawable/rectanglestemlogo"
android:orientation="horizontal">
<Button
android:id="#+id/Home_Button"
android:layout_width="0dp"
android:layout_weight="0.33"
android:layout_height="wrap_content"
android:onClick="goToStemAcademy"
android:text="#string/Home_Button"
android:textAllCaps="false"
android:textColor="#000000" />
<Button
android:id="#+id/StemAcademy_Button"
android:layout_width="0dp"
android:layout_weight="0.33"
android:layout_height="wrap_content"
android:layout_marginEnd="0dp"
android:text="#string/Stem_Academy"
android:textAllCaps="false"
android:textColor="#000000"
android:visibility="visible" />
<Button
android:id="#+id/Competitions_Button"
android:layout_width="0dp"
android:layout_weight="0.33"
android:layout_height="wrap_content"
android:layout_marginEnd="2dp"
android:text="#string/Competitions"
android:textAllCaps="false"
android:textColor="#000000" />
</LinearLayout>
then the java:
package com.example.dmssteamapp6;
import android.content.Intent;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
public void goToStemAcademy(View v) {
startActivity(new Intent(MainActivity.this, StemAcademy.class));
}
}
then the new xml activity:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="138dp"
android:onClick="goToHome"
android:text="Button" />
</LinearLayout>
and the java that goes with it:
package com.example.dmssteamapp6;
import android.content.Intent;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
public class StemAcademy extends AppCompatActivity {
public void goToHome(View v) {
startActivity(new Intent(StemAcademy.this, MainActivity.class));
}
}
also here is the androidmanifest.xml code if applicable:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dmssteamapp6">
<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">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".StemAcademy"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
</activity>
</application>
</manifest>
Just Create onCreate method in every java class
public class StemAcademy extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_stemacademy);
}
public void goToHome(View v) {
startActivity(new Intent(StemAcademy.this, MainActivity.class));
}
}
Activity main class
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void goToStemAcademy(View v) {
startActivity(new Intent(MainActivity.this, StemAcademy.class));
}
}
I am trying to use intents but on clicking any of the buttons,the app stops working and terminates.I am a beginner and I couldn't find the reason.I am providing my xml file,java file and menifest file.Please someone help.
here is my xml file:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.shreya.intents.MainActivity">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Set Alarm"
android:id="#+id/alarm"
android:onClick="setAlarm"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Map"
android:id="#+id/map"
android:onClick="seeMap"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Mail"
android:id="#+id/mail"
android:onClick="email"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Email ID"
android:inputType="textCapWords"
android:id="#+id/address"/>
</LinearLayout>
And here is my .java file:
package com.example.shreya.intents;
import android.content.Intent;
import android.net.Uri;
import android.provider.AlarmClock;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import java.util.Locale;
import static com.example.shreya.intents.R.id.alarm;
public class MainActivity extends AppCompatActivity {
private Button mail;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void setAlarm(){
String message="Wake Up";
int hour=7;
int minutes=0;
Intent intent = new Intent(AlarmClock.ACTION_SHOW_ALARMS);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
}
}
public void seeMap(){
String uri = String.format(Locale.ENGLISH, "geo:%f,%f", 28.699884, 77.273075);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(uri));
if(intent.resolveActivity(getPackageManager())!=null)
startActivity(intent);
}
public void email(){
EditText mail=(EditText)findViewById(R.id.address);
String add=mail.getText().toString();
composeEmail(add,"shreya");
}
public void composeEmail(String addresses, String subject) {
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:")); // only email apps should handle this
intent.putExtra(Intent.EXTRA_EMAIL, addresses);
intent.putExtra(Intent.EXTRA_SUBJECT, subject);
intent.putExtra(Intent.EXTRA_TEXT,"hello");
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
}
}
}
And finally this is my menifest file:
<?xml version="1.0" encoding="utf-8"?>
<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">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
You have to add parameter View view to your onClick methods.
For example:
public void setAlarm(View view){
}
Add that parameter to other onClick methods also: email and seeMap.
Under the hood, the system uses reflection to figure out the exact onClick method in the Activity and the system uses the following exact pattern to find the method: a public void method with the specified method name in the xml onClick attribute and has a single parameter View.
I've made an app that allows user to login but everytime I try to run, my App is crashing constantly.
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mertino11.ourapplication">
<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">
<activity
android:name=".MainActivity"
android:theme="#style/AppTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
activity_account.xml (XML for user logged in succesfully)
<?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.example.mertino11.ourapplication.AccountActivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:text="Account Page"
android:ems="10"
android:id="#+id/editText"
android:textSize="22sp"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:textStyle="normal|bold"
android:textAlignment="center" />
</RelativeLayout>
activity_main.xml (login page)
<?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:orientation="vertical"
android:baselineAligned="false">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
android:id="#+id/emailField"
android:hint="Email"
android:paddingTop="20dp" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:ems="10"
android:id="#+id/passwordField"
android:hint="Password"
android:fontFamily="sans-serif"
android:paddingTop="20dp" />
<Button
android:text="Login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/loginBtn"
android:paddingTop="20dp" />
</LinearLayout>
Java --> Class: AccountActivity (Page when the user logged in successfully)
package com.example.mertino11.ourapplication;
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);
}
}
Java --> Class: FireApp (Firebase settings I think)
package com.example.mertino11.ourapplication;
import android.app.Application;
import com.firebase.client.Firebase;
/**
* Created by Mertino11 on 10-Dec-16.
*/
public class FireApp extends Application {
#Override
public void onCreate() {
super.onCreate();
Firebase.setAndroidContext(this);
}
}
Java --> Class: Main Activity (Back-end logging with account)
package com.example.mertino11.ourapplication;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
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;
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);
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(firebaseAuth.getCurrentUser() != null) {
startActivity(new Intent(MainActivity.this, AccountActivity.class));
}
}
};
mLoginBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startSignIn();
}
});
}
#Override
protected void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
}
private void startSignIn() {
String email = mEmailField.getText().toString();
String password = mPasswordField.getText().toString();
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) {
if(!task.isSuccessful()){
Toast.makeText(MainActivity.this, "Sign In Problem!", Toast.LENGTH_LONG).show();
}
}
});
}
}
}
Error Message at Run:
--------- beginning of crash
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.mertino11.ourapplication, PID: 3060
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.mertino11.ourapplication/com.example.mertino11.ourapplication.AccountActivity}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1805)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1523)
at android.app.Activity.startActivityForResult(Activity.java:4224)
at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:48)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:75)
at android.app.Activity.startActivityForResult(Activity.java:4183)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:856)
at android.app.Activity.startActivity(Activity.java:4507)
at android.app.Activity.startActivity(Activity.java:4475)
at com.example.mertino11.ourapplication.MainActivity$1.onAuthStateChanged(MainActivity.java:48)
at com.google.firebase.auth.FirebaseAuth$1.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Application terminated.
Screenshot of the error:
http://i66.tinypic.com/51btrp.png
The scenario of the app:
Create account firebase Google (manually)
Opens app --> Sees login page
Logs in with accountdetails of Firebase
Goes to AccountActivity page
Note: I am a amateur/beginner with AndroidStudio.
The error is pretty self-explanatory.
You have missed adding the AccounActivity on your manifest...
<application
android:name=".FireApp"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true">
<activity
android:name=".MainActivity"
android:theme="#style/AppTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name=".AccountActivity"
android:theme="#style/AppTheme" />
</application>
Add AccountActivity in your AndroidManifest.xml
<activity
android:name=".AccountActivity">
<intent-filter>
...
</intent-filter>
</activity>
Always carefully read logcat:
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.mertino11.ourapplication/com.example.mertino11.ourapplication.AccountActivity}; have you declared this activity in your AndroidManifest.xml?
I thank you all for giving me the solution. However (If it is possible) do you guys know why my App is running AccountActivity first instead of my Mainactivity? (it should run the mainactivity first)?
add .AccountActivity in manifest file as
<activity
android:name=".AccountActivity">
</activity>