标题未显示在对话框片段中

Question

我具有以下显示对话框标题的样式

<style name="CustomDialog" parent="@style/Theme.AppCompat.Light.Dialog">
    <item name="android:windowNoTitle">false</item>
</style>

但是，该对话框不显示标题。该对话框看起来像下的图像。我还提供了用于初始化视图的代码

void initView(int maxLength)
{
    setStyle(DialogFragment.STYLE_NORMAL, R.style.CustomDialog);

    getDialog().setTitle(title);
    Window wnd = getDialog().getWindow();
    if (wnd != null)
        wnd.getAttributes().windowAnimations = R.style.dialog_animation;

    Button dismiss = root.findViewById(R.id.numeric_done);
    dismiss.setOnClickListener((View v) -> done());

    this.maxLength = maxLength;
    numericInputManager = new NumericInputManager(maxLength);

    intStack = new Stack<>();
    valueEnteredTV = root.findViewById(R.id.value_entered);

    initButtons();
    initRestrictions();
}

Answer 1

在您的AppTheme上添加<item name="android:dialogTheme">@style/CustomDialog</item>，例如

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="android:dialogTheme">@style/CustomDialog</item>
</style>