單擊 AccountFragment 中的按鈕后出現此錯誤public class AccountFragment extends Fragment { private static final String TAG = "Profile" ; FirebaseAuth firebaseAuth; FirebaseUser currentUser; DatabaseReference databaseReference; TextView tv_name, tv_email, tv_gender, tv_home, tv_phone; private String userID; Button btn_update; public AccountFragment() { // Required empty public constructor } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment View view = inflater.inflate(R.layout.fragment_account, container, false); tv_name=view.findViewById(R.id.tv_name); tv_email=view.findViewById(R.id.tv_email); tv_gender=view.findViewById(R.id.tv_gender); tv_home=view.findViewById(R.id.tv_home); tv_phone=view.findViewById(R.id.tv_phone); btn_update=view.findViewById(R.id.btn_update); //ini firebaseAuth = FirebaseAuth.getInstance(); currentUser = firebaseAuth.getCurrentUser(); userID = currentUser.getUid(); databaseReference = FirebaseDatabase.getInstance().getReference("Customer").child(firebaseAuth.getUid()); //For Retrieve Information databaseReference.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(@NonNull DataSnapshot dataSnapshot) { Log.d( TAG, "onDataChange :" +dataSnapshot); Customer cust = dataSnapshot.getValue(Customer.class); tv_name.setText(cust.getName()); tv_email.setText(cust.getEmail()); tv_gender.setText(cust.getGender()); tv_home.setText(cust.getHome_address()); tv_phone.setText(cust.getTelephone_number()); }單擊按鈕后，我收到此錯誤 2019-09-22 22:20:32
1 回答
智慧大石
TA貢獻1946條經驗 獲得超3個贊
您無法使用 startActivity 打開片段，您需要實現一個回調，該回調會在您的用戶個人資料成功更新時觸發。在您的主機活動中創建一個界面，如下所示：
public interface UpdateProfileSuccess{
void presentAccountFragment();
}
還在活動中將其實例化為：
UpdateProfileSuccess callback = new UpdateProfileSuccess(){
@Override
void presentAccountFragment(){
getSupportFragmentManager().beginTransaction().replace(R.id.container,new
AccuontFragment()).commit();
}
}
在您的更新配置文件片段中，創建一個構造函數，將該回調作為：
private MainActivity.UpdateProfileSuccess callback;
public UpdateProfileFragment(MainActivity.UpdateProfileSuccess callback){
this.callback = callback;
}
最后在請求的 onComplete 中將該回調消耗為：
callback.presentAccountFragment();
這樣您的 Activity 將負責呈現 AccountFragment。
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