Firebase认证：Android：无法显示用户电子邮件和照片

问题描述

我已经在我的Android应用程序中添加了Firebase Auth，我正在使用Facebook和Google登录。登录是正常的。现在我想从用户的Facebook帐户或Google帐户（无论用户选择登录）检索用户个人资料信息，并在用户个人资料活动中显示信息。我可以检索和显示用户名和用户UID，但是，用户电子邮件和用户照片都没有显示，但已经被检索。

检索用户信息（LoginActivity.java）：

  authStateListener = new FirebaseAuth.AuthStateListener（）{
 @Override 
 public void onAuthStateChanged（@NonNull FirebaseAuth firebaseAuth）{
 
 FirebaseUser user = firebaseAuth.getCurrentUser（）; 
 
 if（user！= null）{
 //用户登录
 
（UserInfo userInfo：user.getProviderData（））{
 
 String user_name = userInfo.getDisplayName（）; 
 String user_email = userInfo.getEmail（）; 
 Uri user_img = userInfo.getPhotoUrl（）; 
 String user_id = userInfo.getUid（）; 
 
 SharedPreferences preferences = getSharedPreferences（UserInfoConstants.STRING_NAME，0）; 
 SharedPreferences.Editor editor = preferences.edit（）; 
 editor.putString（UserInfoConstants.KEY_USER_NAME，user_name）; 
 editor.putString（UserInfoConstants.KEY_USER_EMAIL，user_email）; 
 editor.putString（UserInfoConstants.KEY_USER_ID，user_id）; 
 editor.putString（UserInfoConstants.KEY_USER_IMG，user_img！= null？user_img.toString（）：null）; 
 editor.apply（）; 
} 
 
} else {
 //用户登出
 return; 
} 
} 
}; 
  

以下是显示用户信息（ProfileActivity.java）的方式： / p>

  SharedPreferences preferences = getSharedPreferences（LoginActivity.UserInfoConstants.STRING_NAME，0）; 
 
 String user_img_uri = preferences.getString（LoginActivity.UserInfoConstants.KEY_USER_IMG，）; 
 
 if（user_img_uri.isEmpty（））{
 
 userImgView.setImageResource（R.drawable.com_facebook_profile_picture_blank_portrait）; 
} else {
 
 userImgView.setImageBitmap（getImageBitmap（user_img_uri））; 
} 
 userName.setText（preferences.getString（LoginActivity.UserInfoConstants.KEY_USER_NAME，））; 
 userEmail.setText（preferences.getString（LoginActivity.UserInfoConstants.KEY_USER_EMAIL，））; 
 userId.setText（ID：+ preferences.getString（LoginActivity.UserInfoConstants.KEY_USER_ID，））; 
  

我搜索了很多，但无法获得相同的解决方案。

任何人都可以帮助？

解决方案

Uri refrence总是空。尝试将其存储为如下所示的字符串：

  String uri = userInfo.getPhotoUrl（）。toString; 
  

然后将其传递给首选项，然后将其设置为：

  String fbImage = pref.getString（ImageUri，）; 
 
 if（fbImage！= null&！fbImage.isEmpty（））{
 Picasso.with（getApplicationContext（））
 .load（fbImage）
 .placeholder（R.drawable.img_circle_placeholder）
 .resize（avatarSize，avatarSize）
 .centerCrop（）
 .transform（new CircleTransformation（））
 .into（ImageViewObject） ; 
 
} 
  

确保你添加毕加索依赖关系到你的毕业生。 p>

  compile'c​​om.squareup.picasso：picasso：2.3.2'
  

for emailID：

  String email = pref.getString（电子邮件，null）; 
 
 //尝试查看这里
 Log.w（email，+ email）; 
 
 if（email！= null&！email.isEmpty（））{
 textEmail.setText（+ email）; 
} 
  

或者您可以使用意向服务，这是确定的：

在您登录活动中：

  Intent intent = new Intent（this，MainActivity。类）; 
 intent.putExtra（email_id，email_id）; 
 startActivity（intent）; 
 finish（）; 
 
和你的mainActivity：
 
 Intent intent = getIntent（）; 
 String email = intent.getStringExtra（email_id）; 
 
 textEmail.setText（+ email）; 
  

update-2

有一个firebase方法..和它最简单的方法。

在您要恢复数据的第二个活动中写入此代码..

  FirebaseUser user = FirebaseAuth.getInstance（）。getCurrentUser（）; 
 TextView电子邮件; 
 
 email.setText（+ user.getEmail（））; 
  

不需要sharedPrefrence或意向服务。

I have added Firebase Auth in my android app and I am using Facebook and Google sign in. Signing in is working fine. Now I want to retrieve user profile info from user's either Facebook account or Google account (whichever, user chooses to sign in) and display the info in user profile activity. I am able to retrieve and display user name and user UID, however, user email and user photo are not displaying, though retrieved.

Here is how I am retrieving user info (LoginActivity.java):

authStateListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {

                FirebaseUser user = firebaseAuth.getCurrentUser();

                if (user != null) {
                    //User is signed in

                    for (UserInfo userInfo : user.getProviderData()){

                        String user_name = userInfo.getDisplayName();
                        String user_email = userInfo.getEmail();
                        Uri user_img = userInfo.getPhotoUrl();
                        String user_id = userInfo.getUid();

                        SharedPreferences preferences = getSharedPreferences(UserInfoConstants.STRING_NAME,0);
                        SharedPreferences.Editor editor = preferences.edit();
                        editor.putString(UserInfoConstants.KEY_USER_NAME, user_name);
                        editor.putString(UserInfoConstants.KEY_USER_EMAIL, user_email);
                        editor.putString(UserInfoConstants.KEY_USER_ID, user_id);
                        editor.putString(UserInfoConstants.KEY_USER_IMG, user_img != null ? user_img.toString() : null);
                        editor.apply();
                    }

                } else {
                    //User is signed out
                    return;
                }
            }
        };

Here is how am displaying user info (ProfileActivity.java):

SharedPreferences preferences = getSharedPreferences(LoginActivity.UserInfoConstants.STRING_NAME,0);

        String user_img_uri = preferences.getString(LoginActivity.UserInfoConstants.KEY_USER_IMG,"");

        if (user_img_uri.isEmpty()){

            userImgView.setImageResource(R.drawable.com_facebook_profile_picture_blank_portrait);
        } else {

            userImgView.setImageBitmap(getImageBitmap(user_img_uri));
        }
        userName.setText(preferences.getString(LoginActivity.UserInfoConstants.KEY_USER_NAME,""));
        userEmail.setText(preferences.getString(LoginActivity.UserInfoConstants.KEY_USER_EMAIL,""));
        userId.setText("ID: " + preferences.getString(LoginActivity.UserInfoConstants.KEY_USER_ID,""));

I searched a lot about it but is unable to get any resolution for the same.

Can anyone help????

解决方案

Uri refrence is always null. Try to store it as string like this:

String uri =  userInfo.getPhotoUrl().toString;

And pass it to preference, then set it like this:

String fbImage = pref.getString("ImageUri", "");

if (fbImage != null && !fbImage.isEmpty()) {
            Picasso.with(getApplicationContext())
                    .load(fbImage)
                    .placeholder(R.drawable.img_circle_placeholder)
                    .resize(avatarSize, avatarSize)
                    .centerCrop()
                    .transform(new CircleTransformation())
                    .into(ImageViewObject);

        }

Make sure you added picasso dependency to your gradle.

 compile 'com.squareup.picasso:picasso:2.3.2'

for emailID:

String email = pref.getString("email", null);

//try to check here
Log.w("email", ""+email);

if(email != null && !email.isEmpty()){
   textEmail.setText(""+email);
}

or you can use intent service this is work for sure:

In you login activity:

Intent intent = new Intent(this, MainActivity.class);
intent.putExtra("email_id", email_id);
startActivity(intent);
finish();

and in your mainActivity:

Intent intent = getIntent();
String email = intent.getStringExtra("email_id");

textEmail.setText(""+email);

update-2

there is one firebase method.. and its easiest way to do it.

write this code in your second activity where you want to retrive data..

FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
TextView email;

email.setText(""+ user.getEmail());

there is no need of sharedPrefrence or intent service.

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