Question

我想在AlertDialog中显示一个带有按钮的列表。按钮用于关闭Dialog本身。我扩展了AlertDialog并向LayoutParams添加了一些Window以扩展整个屏幕宽度的对话框：

    //Grab the window of the dialog, and change the width
    WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
    Window window = getWindow();
    lp.copyFrom(window.getAttributes());
    //This makes the dialog take up the full width
    lp.width = WindowManager.LayoutParams.MATCH_PARENT;
    lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
    window.setAttributes(lp);

确定。但是如果列表很长（显示已满），我可以滚动ListView，但按钮不会显示在它下面。这是对话框的ContentView：

<?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">

<ListView
    android:id="@+id/choose_equipment_list"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<Button
    android:layout_below="@+id/choose_equipment_list"
    android:id="@+id/btn_choose_equipment_close"
    style="@style/custom_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="close" />

</RelativeLayout>

无论多长时间，我该如何在列表下方显示按钮？（我读了很多警告，将ListView放在ScrollView内，无论如何都尝试过但失败了......）

Answer 1

试一试：

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

    <ListView
        android:id="@+id/choose_equipment_list"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <Button
        android:id="@+id/btn_choose_equipment_close"
        style="@style/custom_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="close" />

</LinearLayout>

如果不起作用，请删除style="@style/custom_button"行。某些样式配置可能会更改视图样式并隐藏按钮。

Answer 2

我想在AlertDialog中显示一个带有按钮的列表。

所以你需要做的是：

从按钮中删除它：

android:layout_below="@+id/choose_equipment_list"

然后把它放在Button：

android:layout_alignParentBottom="true"

并将其放入ListView：

android:layout_above="@+id/btn_choose_equipment_close"

你完成了。

Answer 3

嗯。也许尝试使用Fragments。我给你编了样本。告诉我你是否正在寻找：）

MainActivity.java

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_activity);
        findViewById(R.id.open_dialog_button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                SampleDialogFragment dialogFragment = new SampleDialogFragment();
                dialogFragment.show(getSupportFragmentManager(), "dialogFragment");
            }
        });
    }
}

main_activity.xml

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

    <Button
        android:id="@+id/open_dialog_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Open dialog"
        android:layout_gravity="center" />
</FrameLayout>

SampleDialogFragment.java

public class SampleDialogFragment extends DialogFragment {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
        alert.setTitle("Timer");
        alert.setPositiveButton("OK", null);

        View view = View.inflate(getActivity(), R.layout.dialog, null);

        String[] array = {"Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello", "Hello"};

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, array);
        ((ListView) view.findViewById(R.id.listView)).setAdapter(adapter);

        alert.setView(view);

        return alert.create();
    }
}

dialog.xml

<ListView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/listView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

Answer 4

我认为你可以在XML中首先找到你需要声明的按钮，然后在它上方的listview中将height设置为fill_parent

Answer 5

这应该是你想要的......

<?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">

<ListView
    android:id="@+id/choose_equipment_list"
    android:layout_above="@+id/btn_choose_equipment_close"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<Button
    android:id="@+id/btn_choose_equipment_close"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:text="close" />

</RelativeLayout>

AlertDialog中ListView下的按钮被隐藏

5 个答案: