1、Manifest中声明

<service android:name="your.package.YourCallScreeningServiceImplementation"android:permission="android.permission.BIND_SCREENING_SERVICE"><intent-filter><action android:name="android.telecom.CallScreeningService"/></intent-filter></service>

2、创建YourCallScreeningServiceImplementation

public class YourCallScreeningServiceImplementation extends CallScreeningService {@Overridepublic void onScreenCall(@NonNull Call.Details callDetails) {respondToCall(callDetails,new CallResponse.Builder().setDisallowCall(false).build());}}

3、设置为默认应用

private static final int REQUEST_ID = 1;public void requestRole() {RoleManager roleManager = (RoleManager) getSystemService(ROLE_SERVICE);Intent intent = roleManager.createRequestRoleIntent(RoleManager.ROLE_CALL_SCREENING);startActivityForResult(intent, REQUEST_ID);}@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data) {if (requestCode == REQUEST_ID) {if (resultCode == android.app.Activity.RESULT_OK) {// Your app is now the call screening app} else {// Your app is not the call screening app}}}

遇到的问题

1、在小米14上需要联系人权限，否则onScreenCall()不执行

2、鸿蒙系统上如果设置默认应用失败，检测一下manifest中的权限声明，目前发现需要删除

<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />

这个权限是Android13开始有的，对鸿蒙系统没有影响，可以在代码编译阶段删除android.permission.POST_NOTIFICATIONS