适配器类中没有替换片段

Question

我正在尝试用适配器类中的另一个按钮点击侦听器替换一个片段。编译器将转到onClickListener，但片段不会被替换。

@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>

Answer 1

如果使用标记<fragment>在xml中定义Fragment，则它是View层次结构的一个常量部分，不能删除/替换它。如果要替换Fragment，则应定义一个可替换的布局(用作Fragment的容器(。因此，您的Activity布局可能如下：

<?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>

然后你可以将其替换为：

@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();
}

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