我無法將對象添加到Firebase實時數據庫。我試了下面的代碼。但是這個代碼執行時ANDROID FirebaseDatabase:無法保存對象
db.child("Users").setValue(person);
我的應用程序崩潰,
public class Person{
String fname;
String lname;
Person()
{}
Person(String fname,String lname)
{
this.fname = fname;
this.lname = lname;
}
public String getFname() {
return fname;
}
public String getLname() {
return lname;
}
}
以下是錯誤。
11-20 15:34:57.762 2752年至2752年/ shazdroid.com.surveyapp E/AndroidRuntime: 致命異常:主 工藝:shazdroid.com.surveyapp,PID:2752 com.google.firebase .database.DatabaseException:發現衝突 名稱的獲取者:isChangingConfigurations at com.google.android.gms.internal.zzamy $ zza。(Unknown Source) at com.google.android.gms.internal.zzamy.zzj(Unknown源) at com.google.android.gms.internal.zzamy.zzca(Unknown Source) at com.google.android。 gms.internal.zzamy.zzch(Unknown Source) at com.google.android.gms.internal.zzamy $ zza.zzci(Unknown Source) at com.google.android.gms.internal.zzamy.zzca(Unknown Source ) at com.google.android.gms.internal.zzamy.zzbz(Unknown Source) at com.google.firebase.database.DatabaseReference.zza(Unknown Source) at com.google.firebase.database.DatabaseReference.setValue (Unknown Source) at shazdroid.com.surveyapp.AddMember.savePerson(AddMember.java:207) at shazdroid.com.surveyapp.AddMember.access $ 000(AddMember.java:37) at shazdroid.com.surveyapp。使用addMember $ 6.onClick(添加Member.java:193) at android.view.View.performClick(View.java:5610) at android.view.View $ PerformClick.run(View.java:22260) at android.os.Handler.handleCallback( Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread。 java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:865) at com.android.internal。 os.ZygoteInit.ma在(ZygoteInit.java:755)
這是我如何保存對象。
private void savePerson() {
suc.show();
Person person = new Person("shahbaz","ansari");
db.child("User").setValue(person)
.addOnCompleteListener(AddMember.this, new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if(task.isSuccessful())
{
suc.dismissWithAnimation();
suc = new SweetAlertDialog(AddMember.this,SweetAlertDialog.SUCCESS_TYPE);
suc.setTitleText("Successful");
suc.setContentText("Saving data successful");
suc.setConfirmText("OK");
suc.setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sweetAlertDialog) {
sweetAlertDialog.dismissWithAnimation();
}
}).show();
}else{
suc.dismissWithAnimation();
suc = new SweetAlertDialog(AddMember.this,SweetAlertDialog.ERROR_TYPE);
suc.setTitleText("Failed");
suc.setContentText("Failed to save data");
suc.setConfirmText("Try Again");
suc.setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sweetAlertDialog) {
savePerson();
}
});
suc.setCancelText("cancle");
suc.setCancelClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sweetAlertDialog) {
sweetAlertDialog.dismissWithAnimation();
}
}).show();
}
}
});
我怎樣才能保存一堆人的信息,如姓名,年齡,身份證等......包括保存數據的日期,以便根據給定日期檢索單身人士的數據? –