Question

我正在开发一个应用程序，其中我有详细活动，其中包含一个详细信息片段，一个详细信息片段包含一个4按钮，当我点击该按钮时，我想要移动到新片段，但我的片段没有替换因为我使用片段事务替换方法，请求为我提供更好的方法，并期待我的方法

这是细节片段

public class DetailActivityFragment extends Fragment{

TextView textView;
ImageView imageView;
TextView details;
Button button;
public DetailActivityFragment() {
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view=inflater.inflate(R.layout.fragment_detail, container, false);


   Bundle getBundle = getActivity().getIntent().getExtras();

    String name = getBundle.getString("NAME");
    textView= (TextView) view.findViewById(R.id.bioname);
    textView.setText(name);
    imageView= (ImageView) view.findViewById(R.id.imageView);
    imageView.setImageResource(getBundle.getInt("IMAGE"));
    Log.v("test", "images are coming");
     button= (Button) view.findViewById(R.id.button_quickfacts);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Fragment fragment = new QuickFacts();
            FragmentTransaction fragmentTransaction =
                   getFragmentManager().beginTransaction();

            fragmentTransaction.replace(R.id.fragment_container, fragment);
            Log.v("replace","fragment repalacd");
            fragmentTransaction.addToBackStack(null);
            fragmentTransaction.commit();
        }
    });
    return view;
}

}

fragment detail.xml

  <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"
   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.rahul.famousbiography.DetailActivityFragment"
   tools:showIn="@layout/activity_detail"
   android:gravity="center_horizontal">

  <TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/bioname"
    android:textSize="20dp"
    android:gravity="center_vertical"
    android:textColor="#141715"
    android:layout_alignEnd="@+id/imageView"
    android:layout_alignParentTop="true"
    android:layout_alignStart="@+id/imageView" />

    <ImageButton
    android:layout_width="150dp"
    android:layout_height="250dp"
    android:scaleType="centerCrop"
    android:id="@+id/imageView"
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp"
    android:layout_centerHorizontal="true"
    android:layout_below="@+id/bioname" />

    <Button
    android:id="@+id/button_quickfacts"

    android:text="Quick Facts"
    android:textColor="#FFFFFF"
    android:textSize="25sp"

    android:layout_width="150dp"
    android:layout_height="60dp"
    android:background="@drawable/quick_facts"
    android:shadowColor="#A8A8A8"
    android:shadowDx="0"
    android:shadowDy="0"
    android:shadowRadius="5"
    android:layout_below="@+id/imageView"
    android:layout_alignParentStart="true" />
    <Button
    android:id="@+id/biodetail"

    android:text="Biography"
    android:textColor="#FFFFFF"
    android:textSize="25sp"

    android:layout_width="150dp"
    android:layout_height="60dp"
    android:background="@drawable/quick_facts"
    android:shadowColor="#A8A8A8"
    android:shadowDx="0"
    android:shadowDy="0"
    android:shadowRadius="5"
    android:layout_below="@+id/imageView"
    android:layout_alignParentEnd="true" />
   <Button
    android:id="@+id/exit"

    android:text="Exit"
    android:textColor="#FFFFFF"
    android:textSize="25sp"

    android:layout_width="150dp"
    android:layout_height="60dp"
    android:background="@drawable/quick_facts"
    android:shadowColor="#A8A8A8"
    android:shadowDx="0"
    android:shadowDy="0"
    android:shadowRadius="5"
    android:layout_alignTop="@+id/quotes"
    android:layout_alignStart="@+id/biodetail"
    android:layout_alignParentEnd="true" />

   <Button
    android:id="@+id/quotes"

    android:text="Quotes"
    android:textColor="#FFFFFF"
    android:textSize="25sp"

    android:layout_width="150dp"
    android:layout_height="60dp"
    android:background="@drawable/quick_facts"
    android:shadowColor="#A8A8A8"
    android:shadowDx="0"
    android:shadowDy="0"
    android:shadowRadius="5"
    android:layout_marginTop="43dp"
    android:layout_below="@+id/button_quickfacts"
    android:layout_alignParentStart="true" />


 </RelativeLayout>

快速事实片段类，将通过点击

替换

 public class QuickFacts extends Fragment {
TextView detailText;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
          View view=inflater.inflate(R.layout.fragment_quick_facts, container, false);
          Bundle getBundle = getActivity().getIntent().getExtras();
           String details=getBundle.getString("DETAIL");
           detailText= (TextView) view.findViewById(R.id.fragment_add);
           detailText.setText(details);

           return view;
}

} 我的托管活动

     <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:popupTheme="@style/AppTheme.PopupOverlay"
        android:minHeight="?actionBarSize"

         />

  </android.support.design.widget.AppBarLayout>

<include layout="@layout/content_detail" />



</android.support.design.widget.CoordinatorLayout>

Answer 1

因为您在片段中使用此代码，这是不正确的。如果您在片段中有onClick，则必须将活动连接到您的片段。您可以在活动中创建界面和实现。你可以使用这些代码：

你的接口类：

public interface IViewClickDetailQuick {
    public void onClickFragmentDetail();
    public void onClickFragmentQuick();
}

在你的fragment类中添加以下方法：

private IViewClickDetailQuick mListener;

 @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            mListener =
                    (IViewClickDetailQuick)  activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString()
                    + " must implement  IViewClickDetailQuick");
        }
    }

@Override
public void onDetach() {
    super.onDetach();
    mListener = null;
}

在片段中的onClick方法实现中添加此代码：

button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
           mListener.onClickFragmentQuick();
        }
    });

在您的活动类中，您必须实现IViewClickDetailQuick接口并在那里添加您的代码，如下所示：

 @Override
    public void onClickFragmentDetail() {

    }

    @Override
    public void onClickFragmentQuick() {
        getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, new QuickFacts()).addToBackStack(null).commit();
    }

Answer 2

试试这个： -

Fragment frag= new QuickFacts();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

fragmentTransaction.replace(R.id.container_body, frag);
// when back button pressed come back to this Fragment...
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();

单击时不会替换片段

2 个答案: