使用自定义窗口背景保留AlertDialog默认布局参数

<style name="CustomAlertDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="android:background">@drawable/custom_dialog_background</item>
</style>

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#FFFFFF" /> <!-- 设置背景颜色 -->
    <corners android:radius="8dp" /> <!-- 设置圆角 -->
</shape>

AlertDialog.Builder builder = new AlertDialog.Builder(context, R.style.CustomAlertDialog);
builder.setView(R.layout.custom_dialog_layout);
builder.setCancelable(true);
builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        // 确认按钮的点击事件处理
    }
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        // 取消按钮的点击事件处理
    }
});
AlertDialog dialog = builder.create();
dialog.show();