我的应用无法将用户添加到Firebase数据库。我的数据库显示三个用户＆＃39;应用程序已崩溃但控制台无法显示任何用户。任何帮助表示赞赏。
public class LoginPage extends AppCompatActivity implements View.OnClickListener
{
private FirebaseAuth mAuth;
private DatabaseReference mDatabase;
private static final String TAG = "GoogleActivity";
private FirebaseAuth.AuthStateListener mAuthListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_page);
mDatabase = FirebaseDatabase.getInstance().getReferenceFromUrl("https://student-help-portal.firebaseio.com");
idusername = (EditText) findViewById(R.id.idusername);
idpassword = (EditText) findViewById(R.id.idpassword);
mAuth = FirebaseAuth.getInstance();
buttonlogin = (Button) findViewById(R.id.buttonlogin);
buttonsignup = (Button) findViewById(R.id.buttonsignup);
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
// User is signed in
Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
} else {
// User is signed out
Log.d(TAG, "onAuthStateChanged:signed_out");
}
}
};
}
public class User {
public String username;
public String password;
public User() {
// Default constructor required for calls to DataSnapshot.getValue(User.class)
}
public User(String username, String password) {
this.username = username;
this.password = password;
}
}
private String username, password;
Button buttonlogin, buttonsignup;
EditText idusername, idpassword;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_login_page, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private boolean validateForm() {
boolean valid = true;
if (TextUtils.isEmpty(username)) {
idusername.setError("Required.");
valid = false;
} else {
idusername.setError(null);
}
if (TextUtils.isEmpty(password)) {
idpassword.setError("Required.");
valid = false;
} else {
idpassword.setError(null);
}
return valid;
}
private void createAccount(String email, String password) {
if (!validateForm()) {
return;
}
Log.d(TAG, "createAccount:" + email);
mAuth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Log.d(TAG, "createUserWithEmail:onComplete:" + task.isSuccessful());
if (!task.isSuccessful()) {
Toast.makeText(LoginPage.this, "Failed to create account",
Toast.LENGTH_SHORT).show();
}
}
});
}
@Override
protected void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
buttonsignup.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
username = idusername.getText().toString();
password = idpassword.getText().toString();
createAccount(username,password);
}
});
buttonlogin.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
username = idusername.getText().toString();
password = idpassword.getText().toString();
signIn(username,password);
Intent tohomepage = new Intent(LoginPage.this, HomePage.class);
startActivity(tohomepage);
}
}
);
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"LoginPage Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://curlybraces.studenthelpportal/http/host/path")
);
Action viewAction2 = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"LoginPage Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app URL is correct.
Uri.parse("android-app://curlybraces.studenthelpportal/http/host/path")
);
}
private void signIn(String username, String password) {
Log.d(TAG, "signIn:" + username);
if (!validateForm()) {
return;
}mAuth.signInWithEmailAndPassword(username, password)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Log.d(TAG, "signInWithEmail:onComplete:" + task.isSuccessful());
if (!task.isSuccessful()) {
Log.w(TAG, "signInWithEmail:failed", task.getException());
Toast.makeText(LoginPage.this, "failed",
Toast.LENGTH_SHORT).show();
}
}
});
}
private void signOut() {
mAuth.signOut();
}
@Override
public void onStop() {
super.onStop();
if (mAuthListener != null) {
mAuth.removeAuthStateListener(mAuthListener);
}
/*Action viewAction2 = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"LoginPage Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app URL is correct.
Uri.parse("android-app://curlybraces.studenthelpportal/http/host/path")
);
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"LoginPage Page", // TODO: Define a title for the content shown.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://curlybraces.studenthelpportal/http/host/path")
);*/
}
public String getUser(FirebaseUser user) {
if (user != null) {
return user.getEmail();
}
return null;
}
@Override
public void onClick(View v) {
int i = v.getId();
if (i == R.id.buttonsignup) {
createAccount(username,password);
} else if (i == R.id.buttonlogin) {
signIn(username,password);
} /*else if (i == R.id.sign_out_button) {
signOut();
}*/
}
}
答案 0 :(得分：0)
我遇到了同样的问题，通过更改模拟器API版本解决了这个问题。我相信API 23和Firebase之间存在问题。将其更改为21 API，相同的代码完美运行。