Android 系统设置，“隐私”中关闭相机权限

小驰行动派

发布于 2025-07-24 17:41:23

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代码可运行

文章被收录于专栏：Android Camera开发Android Camera开发

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代码可运行

Android系统设置中，“隐私”里面，有一项是关于“摄像头使用权限”，如果关闭了，则所有的app都没法正常去打开相机。

我们如果需要做类似禁用相机的功能，也是可以参考该部分的代码流程逻辑。

这一功能涉及到的相关代码，如下图所示。

CameraService.cpp

--------- CameraService.cpp
Set camera muting behavior
bool isCameraPrivacyEnabled =
                mSensorPrivacyPolicy->isCameraPrivacyEnabled(multiuser_get_user_id(clientUid));
        if (client->supportsCameraMute()) {
            client->setCameraMute(
                    mOverrideCameraMuteMode || isCameraPrivacyEnabled);
        } else if (isCameraPrivacyEnabled) {
            // no camera mute supported, but privacy is on! => disconnect
            ALOGI("Camera mute not supported for package: %s, camera id: %s",
                    String8(client->getPackageName()).string(), cameraId.string());
            // Do not hold mServiceLock while disconnecting clients, but
            // retain the condition blocking other clients from connecting
            // in mServiceLockWrapper if held.
            mServiceLock.unlock();
            // Clear caller identity temporarily so client disconnect PID
            // checks work correctly
            int64_t token = CameraThreadState::clearCallingIdentity();
            // Note AppOp to trigger the "Unblock" dialog
            client->noteAppOp();
            client->disconnect();
            CameraThreadState::restoreCallingIdentity(token);
            // Reacquire mServiceLock
            mServiceLock.lock();
            return STATUS_ERROR_FMT(ERROR_DISABLED,
                    "Camera \"%s\" disabled due to camera mute", cameraId.string());
        }

 bool isCameraPrivacyEnabled =
                mSensorPrivacyPolicy->isCameraPrivacyEnabled(multiuser_get_user_id(clientUid));

if (isCameraPrivacyEnabled) {
        // no camera mute supported, but privacy is on! => disconnect
        ALOGI("Camera mute not supported for package: %s, camera id: %s",
                String8(client->getPackageName()).string(), cameraId.string());
bool CameraService::SensorPrivacyPolicy::isCameraPrivacyEnabled(userid_t userId) {
    if (!hasCameraPrivacyFeature()) {
        return false;
    }
    return mSpm.isIndividualSensorPrivacyEnabled(userId,
        SensorPrivacyManager::INDIVIDUAL_SENSOR_CAMERA); 
}

----- SensorPrivacyService.java
        isIndividualSensorPrivacyEnabled()

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原始发表：2025-07-20，如有侵权请联系 cloudcommunity@tencent.com 删除

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