so i have a project where im implementing a google sign in, i followed this tutorial on how to do that, but when i did, all my XML files appear blank. i made changes to the original MainActivity.java and the activity_main.xml file. i woudl think that only the activity_main.xml would be affected, but all of my XML files appear blank. when i try to run the app, i get
"Error:Content is not allowed in prolog.
" and
"Execution failed for task '.app:builderInfoDebugLoader'"
this is my activity main where i implement the google sign in:
package com.example.mayankthakur.personalprojecttrial2;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.google.android.gms.auth.api.Auth;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.auth.api.signin.GoogleSignInResult;
import com.google.android.gms.auth.api.signin.SignInAccount;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.SignInButton;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import org.w3c.dom.Text;
public class MainActivity extends AppCompatActivity implements View.OnClickListener, GoogleApiClient.OnConnectionFailedListener {
private LinearLayout prof_section;
private Button SignOut;
private SignInButton SignIn;
private TextView Name,Email;
private ImageView Prof_Picture;
private Button continueBut;
private static final int REQ_CODE = 9001;
String name;
Intent nameSave;
private GoogleApiClient mGoogleApiClient;
public static final String prefsName = "com.example.mayankthakur.personalprojecttrial2";
private static final String TAG = "MainActivity";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
prof_section = (LinearLayout) findViewById(R.id.prof_section);
SignOut = (Button) findViewById(R.id.logoutBtn);
SignIn = (SignInButton) findViewById(R.id.gSignIn);
Name = (TextView) findViewById(R.id.nameSpace);
Email = (TextView) findViewById(R.id.emailSpace);
Prof_Picture = (ImageView) findViewById(R.id.profilePicture);
continueBut = (Button) findViewById(R.id.button2);
continueBut.setOnClickListener(this);
SignOut.setOnClickListener(this);
SignIn.setOnClickListener(this) ;
prof_section.setVisibility(View.GONE);
continueBut.setVisibility(View.GONE);
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this, this)
.addApi(Auth.GOOGLE_SIGN_IN_API, gso)
.build();
}
@Override
public void onClick (View v) {
switch (v.getId()) {
case R.id.gSignIn:
signIn();
break;
case R.id.logoutBtn:
signOut();
break;
/*// This is the shared preference
SharedPreferences.Editor prefs = getSharedPreferences(prefsName, MODE_PRIVATE).edit();
//adding a value to the preference
prefs.putString("name", name);
prefs.apply();
nameSave = new Intent(MainActivity.this, Activity2.class);
MainActivity.this.startActivity(nameSave);
*/
}
}
@Override
public void onConnectionFailed (@NonNull ConnectionResult connectionResult){
}
private void signIn() {
Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
startActivityForResult(signInIntent, REQ_CODE );
}
private void signOut(){
Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(new ResultCallback<Status>() {
@Override
public void onResult(@NonNull Status status) {
updateUI(false);
}
});
}
private void handleReuslt(GoogleSignInResult result){
if(result.isSuccess())
{
GoogleSignInAccount acct = result.getSignInAccount();
String personName = acct.getDisplayName();
String personEmail = acct.getEmail();
String imgUrl = acct.getPhotoUrl().toString();
String personId = acct.getId();
Uri personPhoto = acct.getPhotoUrl();
Name.setText(personName);
Email.setText(personEmail);
Glide.with(this).load(imgUrl).into(Prof_Picture);
updateUI(true);
}
else
{
updateUI(false);
}
}
private void updateUI(boolean isLogin){
if(isLogin)
{
prof_section.setVisibility(View.VISIBLE);
SignIn.setVisibility(View.GONE);
}
else
{
prof_section.setVisibility(View.GONE);
SignIn.setVisibility(View.VISIBLE);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == REQ_CODE)
{
GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
handleReuslt(result);
}
}
}
this is my XML file where i added the buttons and stuff for the google sign in:\
<?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:id="@+id/activity_main"
android:orientation="vertical"
tools:context="com.example.mayankthakur.personalprojecttrial2.MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="@+id/prof_section"
android:layout_marginLeft="20dp"
android:layout_marginTop = "50dp"
android:weightSum="1">
<ImageView
android:id="@+id/profilePicture"
android:layout_width="90dp"
android:layout_height="100dp"
android:layout_marginRight="20dp"
android:layout_marginTop="20dp"
android:src="@drawable/photo"
android:layout_weight="0.25" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginLeft="28dp"
android:layout_marginTop="20dp">
<TextView
android:id="@+id/nameSpace"
android:layout_width="166dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center_horizontal"
android:text="Name Display"
android:textSize="20dp"
android:textStyle="bold" />
<TextView
android:id="@+id/emailSpace"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="Email Display"
android:textSize="14dp"
android:textStyle="bold" />
<Button
android:id="@+id/logoutBtn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Logout" />
</LinearLayout>
</LinearLayout>
<com.google.android.gms.common.SignInButton
android:id="@+id/gSignIn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:layout_marginRight="50dp"
android:layout_marginTop="60dp">
</com.google.android.gms.common.SignInButton>
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Please Sign in in order to make use of all of the features of the app"
android:textAlignment="center"
android:textSize="20dp"
android:layout_marginTop="30dp"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"/>
<Button
android:id="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Continue"
android:layout_marginRight="50dp"
android:layout_marginLeft="50dp"
android:layout_marginTop="50dp"/>
</LinearLayout>
any help would be greatly appreciated, and if any of you require any more code please do ask
thanks in advance!
