片段驗證Android Studio

Question

我試圖在一些edittext中創建驗證，我使用了一個我在互聯網上找到的例子，但是當我實現代碼時，findViewById出錯了（在視圖中無法應用到android.view 。.view

public View onCreateView(final LayoutInflater inflater, final ViewGroup container, 
         Bundle savedInstanceState) { 

    final View view = inflater.inflate(R.layout.fragment_cadastro_contas_bancarias, container, false); 

    View.OnClickListener listener = new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Fragment fragment = null; 
      FragmentManager fragmentManager = getFragmentManager(); 
      FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); 

      switch (v.getId()) { 
       case R.id.btn_cadastrar_conta: 
        registerAttemptWithRetrofit(1, 
          "3948", 
          "0", 
          "01089842", 
          "3", 
          1); 

        fragment = new ContasBancarias(); 

       default: 
        break; 
      } 

      fragmentManager.beginTransaction() 
        .replace(R.id.container, fragment) 
        .commit(); 

      View view1 = inflater.inflate(R.layout.fragment_cadastro_contas_bancarias, container, false); 

      EditText agencia = (EditText) getView().findViewById(R.id.txt_agencia); 

      if ("".equals(agencia.getText().toString().trim())) { 
       Toast.makeText(getActivity(), "Campo Obrigatório", Toast.LENGTH_SHORT).show(); 
       return; 

       // 

      } 
    } 
}; 
    return view; } 

---

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" android:layout_height="match_parent"> 


    <TextView 
     android:text="Dados Bancários" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/textView3" 
     android:layout_marginTop="16dp" 
     android:textSize="18sp" 
     android:textColor="@android:color/black" 
     android:textColorHighlight="@color/Black" 
     android:layout_alignParentTop="true" 
     android:layout_alignParentStart="true" /> 

    <EditText 
     android:layout_width="130dp" 
     android:layout_height="wrap_content" 
     android:inputType="number" 
     android:ems="10" 
     android:id="@+id/txt_agencia" 
     android:hint="Agência" 
     android:layout_alignBaseline="@+id/txt_digito_agencia" 
     android:layout_alignBottom="@+id/txt_digito_agencia" 
     android:layout_toEndOf="@+id/spn_tipo_de_conta"/> 

    <EditText 
     android:layout_width="95dp" 
     android:layout_height="wrap_content" 
     android:inputType="number" 
     android:ems="10" 
     android:id="@+id/txt_digito_conta" 
     android:layout_alignBottom="@+id/txt_conta" 
     android:layout_toEndOf="@+id/txt_conta" 
     android:layout_alignTop="@+id/txt_conta" 
     android:hint="Digito" 
     android:textStyle="bold" /> 

    <Spinner 
     android:layout_width="150dp" 
     android:layout_height="40dp" 
     android:id="@+id/spn_tipo_de_conta" 
     android:layout_below="@+id/textView3" 
     android:layout_alignParentStart="true" 
     android:layout_marginTop="23dp" /> 

    <Button 
     android:text="Cancelar" 
     android:layout_width="90dp" 
     android:layout_height="40dp" 
     android:id="@+id/btn_cancelar" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentStart="true" 
     android:layout_marginBottom="21dp" 
     android:background="@color/DefaultBlue" 
     android:textColor="@android:color/white" 
     android:textStyle="normal|bold" 
     android:onClick="cancelar (CadastroContasBancarias)" /> 

    <Button 
     android:text="Cadastrar" 
     android:layout_width="90dp" 
     android:layout_height="40dp" 
     android:id="@+id/btn_cadastrar_conta" 
     android:background="@color/DefaultBlue" 
     android:textColor="@android:color/white" 
     android:textStyle="normal|bold" 
     android:layout_alignBaseline="@+id/btn_cancelar" 
     android:layout_alignBottom="@+id/btn_cancelar" 
     android:layout`enter code here`_alignParentEnd="true" /> 


</RelativeLayout> 

Answer 1

你可以試試這個你得到的解決方案....

查看視圖1 = inflater.inflate（R.layout.fragment_cadastro_contas_bancarias，容器，FALSE）;

EditText agencia =（EditText）view1（）.findViewById（R.id.txt_agencia）;