java.lang.RuntimeException:无法实例化活动组件信息{.UpdateProfileFragment无法强制转换为android.app.activity
单击AccountFragment中的按钮后出现此错误java.lang.RuntimeException:无法实例化活动组件信息{.UpdateProfileFragment无法强制转换为android.app.activity,java,android,android-fragmentactivity,Java,Android,Android Fragmentactivity,单击AccountFragment中的按钮后出现此错误 public class AccountFragment extends Fragment { private static final String TAG = "Profile" ; FirebaseAuth firebaseAuth; FirebaseUser currentUser; DatabaseReference databaseReference; TextView tv_name,
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());
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
//For Update Method
btn_update.setOnClickListener( new View.OnClickListener(){
@Override
public void onClick(View view) {
openUpdateProfile();
}
});
return view;
}
// For update and pass information method
private void openUpdateProfile() {
Intent intent= new Intent(getActivity(), UpdateProfileFragment.class);
//pass value from current to next page
intent.putExtra("name",tv_name.getText().toString().trim());
intent.putExtra("email", tv_email.getText().toString().trim());
intent.putExtra("Home Address",tv_home.getText().toString().trim());
intent.putExtra("Telephone", tv_phone.getText().toString().trim());
startActivity(intent);
}
public class UpdateProfileFragment extends Fragment implements View.OnClickListener {
EditText tv_name, tv_email, tv_home, tv_phone;
Button btn_update;
FirebaseAuth firebaseAuth;
FirebaseUser currentUser;
DatabaseReference databaseReference;
public UpdateProfileFragment() {
// 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_update_profile, container, false);
//get data from intert (data from previous page)
Intent intent = getActivity().getIntent();
String name = intent.getStringExtra("Name");
String email = intent.getStringExtra("Email");
String address = intent.getStringExtra(" Shipping Address");
String phone = intent.getStringExtra("Telephone Number");
//ini
firebaseAuth = FirebaseAuth.getInstance();
currentUser = firebaseAuth.getCurrentUser();
databaseReference = FirebaseDatabase.getInstance().getReference("Customer").child(firebaseAuth.getUid());
tv_name = view.findViewById(R.id.tv_name);
tv_email = view.findViewById(R.id.tv_email);
tv_home = view.findViewById(R.id.tv_home);
tv_phone = view.findViewById(R.id.tv_phone);
tv_name.setText(name);
tv_email.setText(email);
tv_home.setText(address);
tv_phone.setText(phone);
btn_update.setOnClickListener(this);
return view;
}
@Override
public void onClick(View view) {
}
private void updateProfile() {
Intent intent = getActivity().getIntent();
String userUid = firebaseAuth.getCurrentUser().getUid();
String name = tv_name.getText().toString().trim();
String email = tv_email.getText().toString().trim();
String home = tv_home.getText().toString().trim();
String phone = tv_phone.getText().toString().trim();
Customer cust = new Customer(userUid, name, email, home, phone);
databaseReference.child("Customer").child(userUid).setValue(cust).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
Toast.makeText(getActivity(), "Update Successfully", Toast.LENGTH_SHORT).show();
getActivity().finish();
startActivity(new Intent(getActivity(), AccountFragment.class));
}
}
});
}
}
公共类UpdateProfileFragment扩展片段实现View.OnClickListener{
编辑文本电视名称、电视电子邮件、电视主页、电视电话；
按钮btn_更新；
FirebaseAuth FirebaseAuth；
FirebaseUser当前用户；
数据库参考数据库参考；
公共更新profilefragment（）{
//必需的空公共构造函数
}
@凌驾
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
//为该碎片膨胀布局
视图=充气机。充气（R.layout.fragment\u update\u profile，container，false）；
//从intert获取数据（上一页的数据）
Intent Intent=getActivity（）.getIntent（）；
字符串名称=intent.getStringExtra（“名称”）；
字符串email=intent.getStringExtra（“电子邮件”）；
字符串地址=intent.getStringExtra（“发货地址”）；
String phone=intent.getStringExtra（“电话号码”）；
//伊尼
firebaseAuth=firebaseAuth.getInstance（）；
currentUser=firebaseAuth.getCurrentUser（）；
databaseReference=FirebaseDatabase.getInstance（）.getReference（“客户”）.child（firebaseAuth.getUid（））；
tv_name=view.findviewbyd（R.id.tv_name）；
tv_email=view.findviewbyd（R.id.tv_email）；
tv\u home=view.findviewbyd（R.id.tv\u home）；
tv\u phone=view.findviewbyd（R.id.tv\u phone）；
tv_name.setText（名称）；
tv_email.setText（电子邮件）；
tv_home.setText（地址）；
tv_phone.setText（电话）；
btn_update.setOnClickListener（此）；
返回视图；
}
@凌驾
公共void onClick（视图）{
}
私有void updateProfile（）{
Intent Intent=getActivity（）.getIntent（）；
字符串userUid=firebaseAuth.getCurrentUser（）.getUid（）；
String name=tv_name.getText（）.toString（）.trim（）；
字符串email=tv_email.getText（）.toString（）.trim（）；
String home=tv_home.getText（）.toString（）.trim（）；
字符串phone=tv_phone.getText（）.toString（）.trim（）；
Customer cust=新客户（userUid、姓名、电子邮件、主页、电话）；
databaseReference.child（“客户”）.child（userUid）.setValue（cust）.addOnCompleteListener（新的OnCompleteListener（）{
@凌驾
未完成的公共void（@NonNull任务）{
if（task.issusccessful（））{
Toast.makeText（getActivity（），“更新成功”，Toast.LENGTH_SHORT.show（）；
getActivity（）.finish（）；
startActivity（新意图（getActivity（），AccountFragment.class））；
}
}
});
}
}
public interface UpdateProfileSuccess{
void presentAccountFragment();
}
UpdateProfileSuccess callback = new UpdateProfileSuccess(){
@Override
void presentAccountFragment(){
getSupportFragmentManager().beginTransaction().replace(R.id.container,new
AccuontFragment()).commit();
}
}
private MainActivity.UpdateProfileSuccess callback;
public UpdateProfileFragment(MainActivity.UpdateProfileSuccess callback){
this.callback = callback;
}
callback.presentAccountFragment();