Question

我正在使用＆＃34; FirebaseAuth＆＃34;在Android中。通过使用＆＃34; signInWithEmailAndPassword＆＃34;我登录firebase。然后我想从数据库中检索数据。我能登录但是如果我运行＆＃34; FirebaseAuth.getInstance（）。getCurrentUser（）＆＃34;这段代码它返回null。如果你建议任何解决方案，我感谢你。

  FirebaseAuth.getInstance().signInWithEmailAndPassword("my_email08@gmail.com","qwerty123").addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            progressDialog.dismiss();
            Toast.makeText(LiveVieoWatch.this, "signInWithEmailAndPassword Complete", Toast.LENGTH_SHORT).show();

            if(FirebaseAuth.getInstance().getCurrentUser() == null) {
               // startActivityForResult(AuthUI.getInstance().createSignInIntentBuilder().build(),
               //         SIGN_IN_REQUEST_CODE);
               Toast.makeText(LiveVieoWatch.this, "Not Login", Toast.LENGTH_SHORT).show();
            }
            else
            {
                Toast.makeText(LiveVieoWatch.this," Login " + FirebaseAuth.getInstance().getCurrentUser().getDisplayName(),
                        Toast.LENGTH_LONG)
                        .show();
                displayChatMessages();
            }


        }
    });

我总是没有登录Toast。

Answer 1

检查是否登录

        if (auth.getCurrentUser() != null) {

        startActivity(new Intent(LoginActivity.this, UploadActivity.class));
        finish();
        }

登录firebase。

         FirebaseAuth.getInstance().signInWithEmailAndPassword("my_email08@gmail.com","qwerty123").addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
    @Override
    public void onComplete(@NonNull Task<AuthResult> task) {
        progressDialog.dismiss();
        Toast.makeText(LiveVieoWatch.this, "signInWithEmailAndPassword Complete", Toast.LENGTH_SHORT).show();

        if(!task.isSuccessful()) {
           // startActivityForResult(AuthUI.getInstance().createSignInIntentBuilder().build(),
           //         SIGN_IN_REQUEST_CODE);
           Toast.makeText(LiveVieoWatch.this, "Not Login", Toast.LENGTH_SHORT).show();
        }
        else
        {
            Toast.makeText(LiveVieoWatch.this," Login " + FirebaseAuth.getInstance().getCurrentUser().getDisplayName(),
                    Toast.LENGTH_LONG)
                    .show();
            displayChatMessages();
        }


    }
});

Firebase登录在Android中无法正常运行

1 个答案: