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android - 片段未在适配器类中替换

问题描述

我正在尝试在适配器类中的按钮单击侦听器上用另一个片段替换一个片段。编译器将转到 onClickListener 但片段没有替换。

@OnClick(R.id.ib_view)
        public void gotoTranscationDetailsFragment() {
            Toast.makeText(mParent, "Hi", Toast.LENGTH_SHORT).show();
            Fragment viewSuspendedTransactionFragment = new ViewSuspendedTransactionFragment();
            FragmentManager manager = mParent.getSupportFragmentManager();
            FragmentTransaction transaction = manager.beginTransaction();
            transaction.replace(R.id.fragment_suspend_transaction, viewSuspendedTransactionFragment);
            transaction.commit();
        }

完整代码

public class SuspendedTransactionListAdapter extends RecyclerView.Adapter<SuspendedTransactionListAdapter.SuspendedTransactionListHolder> {

    private SuspendTransactionActivity mParent;
    private List<SuspendTransactionFragment.SampleDataSuspendTransactionActivity> sampleList;
    private Fragment fragment;

    public SuspendedTransactionListAdapter(SuspendTransactionActivity mParent, List<SuspendTransactionFragment.SampleDataSuspendTransactionActivity> sampleList, Fragment fragment) {
        this.mParent = mParent;
        this.sampleList = sampleList;
        this.fragment = fragment;
    }

    @Override
    public SuspendedTransactionListHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_suspended_transaction_list, parent, false);
        return new SuspendedTransactionListHolder(itemView);
    }

    @Override
    public void onBindViewHolder(SuspendedTransactionListHolder holder, int position) {
        SuspendTransactionFragment.SampleDataSuspendTransactionActivity sampleDataSuspendTransactionActivity = sampleList.get(position);
        holder.mTransactionNoTextView.setText(sampleDataSuspendTransactionActivity.getTransactionNo());
    }

    @Override
    public int getItemCount() {
        return sampleList.size();
    }

    class SuspendedTransactionListHolder extends RecyclerView.ViewHolder {

        @BindView(R.id.ib_view)
        ImageButton mViewImageButton;

        public SuspendedTransactionListHolder(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }

        @OnClick(R.id.ib_view)
        public void gotoTranscationDetailsFragment() {
            Toast.makeText(mParent, "Hi", Toast.LENGTH_SHORT).show();
            Fragment viewSuspendedTransactionFragment = new ViewSuspendedTransactionFragment();
            FragmentManager manager = mParent.getSupportFragmentManager();
            FragmentTransaction transaction = manager.beginTransaction();
            transaction.replace(R.id.fragment_suspend_transaction, viewSuspendedTransactionFragment);
            transaction.commit();
        }
    }

XML - 活动

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

    <fragment
        android:id="@+id/fragment_suspend_transaction"
        class="com.sahasram.siripos.fragments.SuspendTransactionFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/actionbar"
        tools:layout="@layout/fragment_suspend_transaction" />

</RelativeLayout>

标签： androidandroid-fragments

解决方案

如果您Fragment使用标签在 xml 中定义 a ，<fragment>那么它是您的View层次结构的一个恒定部分，您不能删除/替换它。如果你想替换Fragment，你应该定义一个可替换的布局（作为你的容器Fragment）。因此，您的Activity布局可能如下所示：

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

    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/actionbar" />
</RelativeLayout>

然后您可以将其替换为：

@OnClick(R.id.ib_view)
public void gotoTranscationDetailsFragment() {
    Toast.makeText(mParent, "Hi", Toast.LENGTH_SHORT).show();
    Fragment viewSuspendedTransactionFragment = new ViewSuspendedTransactionFragment();
    FragmentManager manager = mParent.getSupportFragmentManager();
    FragmentTransaction transaction = manager.beginTransaction();
    transaction.replace(R.id.fragment_container, viewSuspendedTransactionFragment);
    transaction.commit();
}

更多信息请看这里

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