Фрагмент, приходящий под экраном контейнера

Question

Я пытаюсь добавить фрагмент над активностью. Я добавляю фрагмент в основной контейнер, но вместо того, чтобы открывать экран Activity, фрагмент идет ниже макета mainActivity. Я знаю, что это очень глупый вопрос, но не смог найти решение. Ниже я отправляю свой код. Нужны ваши предложения.

MainActivity.java: 

    public class MainActivity extends AppCompatActivity { 
    private FirebaseAuth mAuth; 
    private FirebaseAuth.AuthStateListener mAuthListener; 
EditText email, password; 
    TextView login,signup; 

    public FragmentManager fragmentManager; 
    public FragmentTransaction fragmentTransaction; 
    Fragment fragment; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     mAuth = FirebaseAuth.getInstance(); 

     email = (EditText) findViewById(R.id.emailVal); 
     password = (EditText) findViewById(R.id.passwordVal); 
     login = (TextView) findViewById(R.id.login); 
     signup = (TextView) findViewById(R.id.signUP); 
     fragment = new SignupFragment(); 
     signup.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       fragmentManager = getSupportFragmentManager(); 
       fragmentTransaction = fragmentManager.beginTransaction(); 

       fragmentTransaction.add(R.id.maine, fragment); 
       fragmentTransaction.addToBackStack("backfrag"); 
       fragmentTransaction.commit(); 
      } 
     }); 





activity_main.xml 

    <?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 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" 
    android:orientation="vertical" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:id="@+id/maine" 
    tools:context="com.hubbellindia.lightdemo1.MainActivity"> 


    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textSize="25sp" 
     android:textColor="#000000" 
     android:layout_gravity="center_horizontal" 
     android:text="LOGIN" /> 
    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="40dp" 
     android:hint=" Enter Email" 
     android:id="@+id/emailVal" 
     android:background="@drawable/edit" 
     android:layout_marginTop="40dp" 

     /> 
    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="40dp" 
     android:hint=" Enter Password" 
     android:id="@+id/passwordVal" 
     android:background="@drawable/edit" 
     android:layout_marginTop="40dp" 

     /> 
    <TextView 
     android:layout_width="160dp" 
     android:layout_height="40dp" 
     android:text="LOGIN" 
     android:gravity="center" 
     android:background="#ee4356" 
     android:id="@+id/login" 
     android:textColor="#ffffff" 
     android:textStyle="bold" 
     android:layout_gravity="center_horizontal" 
     android:layout_marginTop="40dp"/> 
    <TextView 
     android:layout_width="160dp" 
     android:layout_height="40dp" 
     android:text="Sign up" 
     android:gravity="center" 
     android:id="@+id/signUP" 
     android:layout_marginLeft="80dp" 
     android:textColor="#000000" 
     android:textStyle="bold" 
     android:layout_gravity="center_horizontal" 
     android:layout_marginTop="10dp"/> 

</LinearLayout> 

SignUpFragment.java: 

    public class SignupFragment extends Fragment { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     // Inflate the layout for this fragment 
     return inflater.inflate(R.layout.fragment_signup, container, false); 
    } 

    // TODO: Rename method, update argument and hook method into UI event 


} 

fragment_signup.xml: 

    <FrameLayout 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" 
    tools:context="com.hubbellindia.lightdemo1.SignupFragment"> 

    <!-- TODO: Update blank fragment layout --> 

    <LinearLayout 
     android:id="@+id/activity_main" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical" 
     android:background="#ffffff" 
     android:paddingBottom="@dimen/activity_vertical_margin" 
     android:paddingLeft="@dimen/activity_horizontal_margin" 
     android:paddingRight="@dimen/activity_horizontal_margin" 
     android:paddingTop="@dimen/activity_vertical_margin" 
     tools:context="com.hubbellindia.lightdemo1.MainActivity"> 


     <TextView 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:textSize="25sp" 
      android:textColor="#000000" 
      android:layout_gravity="center_horizontal" 
      android:text="SIGNUP" /> 
     <EditText 
      android:layout_width="match_parent" 
      android:layout_height="40dp" 
      android:hint=" Enter Email" 
      android:id="@+id/emailValNew" 
      android:background="@drawable/edit" 
      android:layout_marginTop="40dp" 

      /> 
     <EditText 
      android:layout_width="match_parent" 
      android:layout_height="40dp" 
      android:hint=" Enter Password" 
      android:id="@+id/passwordValNew" 
      android:background="@drawable/edit" 
      android:layout_marginTop="40dp" 

      /> 
     <TextView 
      android:layout_width="160dp" 
      android:layout_height="40dp" 
      android:text="SIGNUP" 
      android:gravity="center" 
      android:background="#ee4356" 
      android:id="@+id/signup" 
      android:textColor="#ffffff" 
      android:textStyle="bold" 
      android:layout_gravity="center_horizontal" 
      android:layout_marginTop="40dp"/> 


    </LinearLayout> 


</FrameLayout> 

Answer 1

Попробуйте заменить вам activity расположение к этому

<FrameLayout 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"> 

<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context="com.hubbellindia.lightdemo1.MainActivity"> 


    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center_horizontal" 
     android:text="LOGIN" 
     android:textColor="#000000" 
     android:textSize="25sp" /> 

    <EditText 
     android:id="@+id/emailVal" 
     android:layout_width="match_parent" 
     android:layout_height="40dp" 
     android:layout_marginTop="40dp" 
     android:background="@drawable/edit" 
     android:hint=" Enter Email" 

     /> 

    <EditText 
     android:id="@+id/passwordVal" 
     android:layout_width="match_parent" 
     android:layout_height="40dp" 
     android:layout_marginTop="40dp" 
     android:background="@drawable/edit" 
     android:hint=" Enter Password" 

     /> 

    <TextView 
     android:id="@+id/login" 
     android:layout_width="160dp" 
     android:layout_height="40dp" 
     android:layout_gravity="center_horizontal" 
     android:layout_marginTop="40dp" 
     android:background="#ee4356" 
     android:gravity="center" 
     android:text="LOGIN" 
     android:textColor="#ffffff" 
     android:textStyle="bold" /> 

    <TextView 
     android:id="@+id/signUP" 
     android:layout_width="160dp" 
     android:layout_height="40dp" 
     android:layout_gravity="center_horizontal" 
     android:layout_marginLeft="80dp" 
     android:layout_marginTop="10dp" 
     android:gravity="center" 
     android:text="Sign up" 
     android:textColor="#000000" 
     android:textStyle="bold" /> 

</LinearLayout> 

<FrameLayout 
    android:id="@+id/maine" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" /> 

И заменить фрагмент в FramLayout - maine, чтобы избежать дублирования.

Answer 2

try it 
     **1)activity_main.xml`enter code here`** 

     <?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:id="@+id/activity_main" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:paddingBottom="@dimen/activity_vertical_margin" 
      android:paddingLeft="@dimen/activity_horizontal_margin" 
      android:paddingRight="@dimen/activity_horizontal_margin" 
      android:paddingTop="@dimen/activity_vertical_margin" 
      tools:context="com.example.admin.androidmodule.MainActivity"> 

      <Button 
       android:text="Button" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_alignParentTop="true" 
       android:id="@+id/button" 
       android:layout_marginTop="@dimen/activity_horizontal_margin" 
       android:elevation="0dp" /> 

      <FrameLayout 
       android:id="@+id/fragment_container" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:layout_below="@+id/button" 
       android:layout_alignParentLeft="true" 
       android:layout_alignParentStart="true"> 

      </FrameLayout> 
     </RelativeLayout> 

    **2)MainActivity** 

public class MainActivity extends AppCompatActivity { 

     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.activity_main); 

      Button button = (Button)findViewById(R.id.button); 
      button.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 


        DemoFragment demoFragment = new DemoFragment(); 
        FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction(); 
        fragmentTransaction.add(R.id.fragment_container,demoFragment, "demoFragment").commit(); 

       } 
      }); 
     } 
    }