public abstract class MiniErrorUIProxy {

    /**
     * Displays internal SDK error prompts.
     *
     * @param activity Specifies the current hosting Activity. The value can be null. Ensure that the superapp checks for null values.
     * @param info     Specifies the error context.
     * @return Returns {@code true} if the superapp has displayed the UI itself and the SDK should skip the built-in UI; returns {@code false} to use the default SDK prompt.
     */
    public boolean showError(Activity activity, MiniErrorInfo info) {
        return false;
    }

    /**
     * Indicates whether to suppress the built-in SDK prompt 
     when the error has been returned to the superapp via {@code ResultReceiver} ({@link MiniErrorInfo#reportedToHost} is true). Return true to eliminate duplicate prompts if the superapp has already displayed a prompt in the callback.
     *
     * @return Returns {@code true} to suppress the built-in prompt; returns {@code false} (default) to keep the existing behavior.
     */
    public boolean suppressBuiltInWhenReported() {
        return false;
    }
}

@ProxyService(proxy = MiniErrorUIProxy.class)
public class MyErrorUIProxy extends MiniErrorUIProxy {

    @Override
    public boolean showError(Activity activity, MiniErrorInfo info) {
        if (activity == null || activity.isFinishing()) {
            return false; // The Activity is unavailable. Use the built-in SDK prompt.
        }
        // If willFinish is true, the SDK will close the container. A Dialog is not recommended.
        if (info.willFinish) {
            Toast.makeText(activity, info.msg, Toast.LENGTH_SHORT).show();
        } else {
            showCustomDialog(activity, info);
        }
        return true; // Taken over by the superapp.
    }

    @Override
    public boolean suppressBuiltInWhenReported() {
        return true; // The superapp has already displayed the prompt in the callback. Suppress the built-in prompt to avoid duplicate prompts.
    }
}