我正在尝试以编程方式将从 HTML 文件中选取的表单字段添加到 LinearLayout。我在底部有一个下一步按钮，但它在显示屏上一直被切断。我在平板电脑上试过了，但它仍然没有出现。

这是应用程序的屏幕截图:

如您所见，元素正在渲染，但最后一个元素由于某种原因从屏幕上消失了。

fragment 的 XML:

<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".dataInput.PropertyInfoFragment"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:paddingLeft="20dp"
    android:paddingRight="20dp">

    <ScrollView
        android:fillViewport="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <LinearLayout
                android:id="@+id/linear_layout_property_info"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

            </LinearLayout>
            <Button
                android:id="@+id/nextButton"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="@string/next"
                android:background="@color/colorPrimary"
                android:textColor="@android:color/white"/>
        </LinearLayout>

    </ScrollView>

</FrameLayout>

调用 Activity 的 XML:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 
    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:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".dataInput.DataInputActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

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

        </android.support.v7.widget.Toolbar>

        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

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

    <android.support.v4.view.ViewPager
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="end|bottom"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_media_play" />

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

我正在调用我在 fragment 的 onCreateView 中制作的方法 formInflator 并从 fragment 传递 LinearLayout 和一个 Elements 对象(来自Jsoup 库)，其中包含我想放入 LinearLayout 中的所有元素:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    view = inflater.inflate(R.layout.fragment_property_info, container, false);
    nextButton = (Button) view.findViewById(R.id.nextButton);
    nextButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            onButtonPressed();
        }
    });

    helpers.formInflator((LinearLayout) view.findViewById(R.id.linear_layout_property_info), generator.propertyTextElements);
    return view;

}

这是方法 formInflator:

public void formInflator(LinearLayout parentLayout, Elements formElements) {
    TextInputLayout index = null;
    for(Element textField : formElements) {
        TextInputEditText editText = new TextInputEditText(context);
        editText.setId(View.generateViewId());
        editText.setHint(textField.id());
        editText.setText(textField.text());
        LinearLayout.LayoutParams editTextParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        editText.setLayoutParams(editTextParams);

        TextInputLayout textInputLayout = new TextInputLayout(context);
        textInputLayout.setId(View.generateViewId());
        textInputLayout.setTag(textField.id());
        RelativeLayout.LayoutParams textInputLayoutParams = new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        if (index == null)
            index = textInputLayout;
        else
            textInputLayoutParams.addRule(RelativeLayout.BELOW, index.getId());

        textInputLayout.setLayoutParams(textInputLayoutParams);
        textInputLayout.addView(editText, editTextParams);

        parentLayout.addView(textInputLayout, textInputLayoutParams);
        index = textInputLayout;
    }
}

知道我做错了什么吗？

最佳答案

试试嵌套 ScrollView 。它为我创造了奇迹。

<androidx.core.widget.NestedScrollView
    -----
    android:layout_width="match_parent"
android:layout_height="match_parent">

LinearLayout<
-----
</LinearLayout>
</androidx.core.widget.NestedScrollView>

关于Android ScrollView 在底部被截断，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38663428/