如何解決android studio中的push()方法錯誤

Question

private void addCustomer(){
    String name = txtName.getText().toString();
    String address = txtAddress.getText().toString();
    String phone = txtPhone.getText().toString();

    if(!TextUtils.isEmpty(name)){
       String id = databaseCustomers.push().getKey();


    }else{
        Toast.makeText(this, "You Should enter a name", Toast.LENGTH_LONG).show();

    }
}

推送方法給出錯誤。我該如何解決這個問題？ 在此處輸入圖片說明

Answer 1

要解決此問題，請更改以下代碼行：

databaseCustomers = FirebaseDatabase.getInstance("cutomers");

到

databaseCustomers = FirebaseDatabase.getInstance();
DatabaseReference ref = databaseCustomers.getReference("cutomers")
String id = ref.push().getKey();

因此，您需要對DatabaseReference對象而不是FirebaseDatabase對象調用push() 。

Answer 2

嘗試

databaseCustomers.child("customers").push().getKey(); //  databaseCustomers should be a database reference