Material 警报对话框，此组件的样式要求您的应用主题为 Theme.AppCompat

Question

我正在尝试创建一个 MaterialAlertDialog，但无论如何我都会收到以下错误

 java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant).
        at com.google.android.material.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:243)
        at com.google.android.material.internal.ThemeEnforcement.checkAppCompatTheme(ThemeEnforcement.java:213)
        at com.google.android.material.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:148)
        at com.google.android.material.internal.ThemeEnforcement.obtainStyledAttributes(ThemeEnforcement.java:76)
        at com.google.android.material.dialog.MaterialDialogs.getDialogBackgroundInsets(MaterialDialogs.java:60)
        at com.google.android.material.dialog.MaterialAlertDialogBuilder.<init>(MaterialAlertDialogBuilder.java:117)
        at com.google.android.material.dialog.MaterialAlertDialogBuilder.<init>(MaterialAlertDialogBuilder.java:103)
        at com.adamm.quem.MainActivity.onItemClick(MainActivity.java:118)

我使用自定义主题作为我的 MainActivity 主题，它是 MaterialComponents

的父主题

<style name="MainMaterialTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

将主题更改为 AppCompat 没有帮助，也不正确我正在按照 Material IO 解释 https://material.io/develop/android/components/dialog/

执行

我的代码：

AlertDialog.Builder builder = new MaterialAlertDialogBuilder(getApplicationContext())
                            .setTitle("Title")
                            .setMessage("Message")
                    builder.show();

如何解决这个问题？

Answer 1

您正在传递 getApplicationContext() 并且应用程序上下文没有您的主题。将您的 activity 作为上下文传入：

AlertDialog.Builder builder = new MaterialAlertDialogBuilder(MainActivity.this)
    .setTitle("Title")
    .setMessage("Message")
builder.show();

Material 警报对话框，此组件的样式要求您的应用主题为 Theme.AppCompat

Material Alert Dialog, The style on this component requires your app theme to be Theme.AppCompat

android

android-alertdialog

material-design