Question

我正在尝试将多个片段添加到LinearLayout。

容器代码

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    inflater.inflate(R.layout.fragment_container, container, false);
    View rootView=inflater.inflate(R.layout.fragment_container, container, false);

    LinearLayout linearLayout = (LinearLayout) rootView.findViewById(R.id.LinLay);
    linearLayout.addView(MyFragment.newInstance("Params", "Random"),0);

    return rootView;
}

容器的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.nt.projet.ToDoList">

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

    <LinearLayout
        android:id="@+id/LinLay"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:animateLayoutChanges="true"
        android:layout_gravity="center"
        android:nestedScrollingEnabled="true"
        android:showDividers="end"
        android:translationZ="5dp"></LinearLayout>
</FrameLayout>

片段代码

public static MyFragment newInstance(String param1, String param2) {
        MyFragment fragment = new MyFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

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

我将向我将在Fragment中创建的按钮添加一些onClickListeners。我想以编程方式向布局添加无限数量的片段。我该怎么做呢？

Answer 1

您无法添加View（），然后传入片段的新实例。这是错的：

linearLayout.addView(MyFragment.newInstance("Params", "Random"),0);

并将newInstance(...)更改为：

MyFragment fragment = new MyFragment();

然后使用FragmentTransaction

FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
if (mCurrentFragment != null) {
    mCurrentFragment = NewFragment.newInstance("Your Argument");
}
ft.add(R.id.LinLay, mCurrentFragment,);
ft.commit();

如果您使用的是Activity而不是FragmentAcitivity，则需要使用getFragmentManager()代替getSupportFragmentManager()

以编程方式将片段放置在LinearLayout中

1 个答案: