看不到 DialogFragment 中长 ListView 底部的按钮

Question

如果 ListView 有很多 children 并且她需要滚动，我看不到 FragmentDialog 末尾的关闭按钮。在这里你可以看到 Dismiss Button：

并且在长 ListView 中您看不到底部的 Dismiss Button：

dialog.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<TextView 
    android:id="@+id/dialog_header_text_view_id"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/dialog_header_text_view_text"
    android:textSize="22sp"
    android:textColor="@color/opening_words_dialog_header_color"
    android:layout_marginBottom="15sp"
    android:textStyle="bold"
    />

<ListView 
    android:id="@+id/dialog_list_view_id"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@id/dialog_header_text_view_id"
    />

<Button 
    android:id="@+id/dialog_dismiss_button_id"
    android:layout_width="100sp"
    android:layout_height="50sp"
    android:text="@string/list_view_button_footer_text"
    android:layout_below="@+id/dialog_list_view_id"
    android:layout_centerHorizontal="true"
    />

</RelativeLayout>

CustomDialogFragment.java:

 public class CustomDialogFragmentYearsKnownLoveMails extends DialogFragment
{
    TextView listViewItemTextView;
    ArrayAdapter<String> arrayAdapter;
    ListView dialogListView;
    String[] items = new String[120];

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

        setCancelable(false);

        listViewItemTextView = (TextView) rootView.findViewById(R.id.list_view_item_text_view_id);
        dialogListView = (ListView) rootView.findViewById(R.id.dialog_list_view_id);
        dissmissDialogButton = (Button) rootView.findViewById(R.id.dialog_dismiss_button_id);

        for (int i = 0;i < items.length;i++)
        {
            items[i] = "" + (i + 1);
        }

        arrayAdapter = new ArrayAdapter<String>(LoveMailsActivity.this, R.layout.list_view_row,R.id.row_text_view_id,items);
        dialogListView.setAdapter(arrayAdapter);

        dialogListView.setOnItemClickListener(new OnItemClickListener() 
        {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,int position, long id)
            {
                Toast.makeText(getActivity(), items[position], Toast.LENGTH_SHORT).show();
                loveEmailYearsKnownTextView.setText(items[position]);
            }
        });

        dissmissDialogButton.setOnClickListener(new View.OnClickListener() // Dismiss button click
        {
            @Override
            public void onClick(View v) 
            {
                dismiss();
            }
        });

        return rootView;
    }
}

那么它有什么问题呢？如果您需要更多信息，请询问。

Answer 1

对于 XML 中的列表视图，将属性 layout_below 更改为 layout_above ="@id/dialog_dismiss_button_id"

并从 Button 中删除 layout_below 属性。并将其添加到按钮
android:layout_alignParentBottom="true" 希望这对你有帮助:)

Answer 2

列表视图，受上下约束，是"stretch"从文本视图的底部（即基线）到按钮的顶部。通常我开始编写触及父视图的组件（即对齐父视图 top/bottom），并以中间的视图作为此视图列表结束。

诀窍是像这样扩展文本视图下方和按钮上方的列表：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/dialog_header_text_view_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/dialog_header_text_view_text"
        android:textSize="22sp"
        android:textColor="@color/opening_words_dialog_header_color"
        android:layout_marginBottom="15sp"
        android:textStyle="bold"
        />

    <Button
        android:id="@+id/dialog_dismiss_button_id"
        android:layout_width="100sp"
        android:layout_height="50sp"
        android:text="@string/list_view_button_footer_text"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        />

    <ListView
        android:id="@+id/dialog_list_view_id"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/dialog_header_text_view_id"
        android:layout_above="@id/dialog_dismiss_button_id"
        />
</RelativeLayout>

看不到 DialogFragment 中长 ListView 底部的按钮

Button at the bottom of a long ListView in a DialogFragment can't be seen

java

android

android-listview

android-button

android-dialogfragment