我想将数据保存到 Firebase。这是我的 Activity 代码:
private Firebase firebaseRef;
Firebase.setAndroidContext(this);
try {
mUserId = firebaseRef.getAuth().getUid();
} catch (Exception e) {
// loginWithMailView();
}
itemsUrl = Constants.FIREBASE_URL + "/Person/" + mUserId +"/Information/";
//Person + null (?) + the other information
这是我的按钮代码:
buttonSave = (Button) findViewById(R.id.btnKaydolKayit);
buttonSave.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
firebaseRef = new Firebase(Constants.FIREBASE_URL);
String name = editTextName.getText().toString().trim();
String surname = editTextSurname.getText().toString().trim();
String gender = final_result.getText().toString();
String mail = editTextMail.getText().toString();
String pass = editTextPass.getText().toString().trim();
String phone = editTextPhone.getText().toString().trim();
String trom = final_resultT.getText().toString();
String bloodGroup = spinnerBlood.getSelectedItem().toString();
String dateBlood = dateTextViewBlood.getText().toString();
String dateTrombo = dateTextViewTrom.getText().toString();
if (pass.isEmpty() || mail.isEmpty()) {
AlertDialog.Builder builder = new AlertDialog.Builder(KaydolActivity.this);
builder.setMessage(R.string.signup_error_message)
.setTitle(R.string.signup_error_title)
.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
} else {
firebaseRef.createUser(mail, pass, new Firebase.ResultHandler(){
@Override
public void onSuccess() {
firebaseRef = new Firebase(Constants.FIREBASE_URL);
// firebaseRef.setValue();
AlertDialog.Builder builder = new AlertDialog.Builder(KaydolActivity.this);
builder.setMessage("Hesap başarılı bir şekilde oluşturuldu!").setPositiveButton(R.string.login_button_label, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Intent intent = new Intent(KaydolActivity.this, loginWithMail.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
@Override
public void onError(FirebaseError firebaseError) {
AlertDialog.Builder builder = new AlertDialog.Builder(KaydolActivity.this);
builder.setMessage(firebaseError.getMessage())
.setTitle(R.string.signup_error_title)
.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
}
});
}
new Firebase(itemsUrl).push().child("name").setValue(name);
new Firebase(itemsUrl).push().child("surname").setValue(surname);
new Firebase(itemsUrl).push().child("gender").setValue(gender);
new Firebase(itemsUrl).push().child("mail").setValue(mail);
new Firebase(itemsUrl).push().child("pass").setValue(pass);
new Firebase(itemsUrl).push().child("phone").setValue(phone);
new Firebase(itemsUrl).push().child("trom").setValue(trom);
new Firebase(itemsUrl).push().child("bloodGroup").setValue(bloodGroup);
new Firebase(itemsUrl).push().child("trom").setValue(trom);
new Firebase(itemsUrl).push().child("dateBlood").setValue(dateBlood);
new Firebase(itemsUrl).push().child("dateTrombo").setValue(dateTrombo);
}
});
我的源代码(用于帮助/举例):https://www.sitepoint.com/creating-a-cloud-backend-for-your-android-app-using-firebase/
try
块中记录下你的mUserId
并查看它是否有值呢? - Satyen UdeshimUserId = firebaseRef.getAuth().getUid()
(新的google.firebase)@TalhaMir - eaglefirebaseRef.getAuth().getUid()
。否则,您将无法在不完全下载节点 Person 并循环遍历它的情况下知道特定用户的 UID。 - Sunshinatornew Firebase(itemsUrl).push().child("name").setValue(name);
。这仍将继续工作,但如果您升级到最新的SDK,您可能会找到更好的帮助。 - Frank van PuffelenfirebaseRef.getAuth()
将返回null
,这导致mUserId
为null
(并且你的代码会忽略NullPointerException
)。如果你想要一个当前用户,你必须让他们登录:https://www.firebase.com/docs/android/guide/user-auth.html#section-logging-in - Frank van Puffelen