[移动开发]Android 10 如何默认给应用授权获取IMEI

代码路径：
frameworks/base/telephony/java/com/android/internal/telephony/TelephonyPermissions.java
在TelephonyPermissions.java文件中checkReadDeviceIdentifiers()方法中默认给应用授权

 @VisibleForTesting
    public static boolean checkReadDeviceIdentifiers(Context context,
            Supplier<ITelephony> telephonySupplier, int subId, int pid, int uid,
            String callingPackage, String message) {
        // Allow system and root access to the device identifiers.
        final int appId = UserHandle.getAppId(uid);
        if (appId == Process.SYSTEM_UID || appId == Process.ROOT_UID) {
            return true;
        }
        // Allow access to packages that have the READ_PRIVILEGED_PHONE_STATE permission.
        if (context.checkPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE, pid,
                uid) == PackageManager.PERMISSION_GRANTED||("包名".equals(callingPackage))) {
            return true;
        }
        // If the calling package has carrier privileges for any subscription then allow access.
        if (checkCarrierPrivilegeForAnySubId(context, telephonySupplier, uid)) {
            return true;
        }
        // if the calling package is not null then perform the DevicePolicyManager device /
        // profile owner and Appop checks.
        if (callingPackage != null) {
            // Allow access to an app that has been granted the READ_DEVICE_IDENTIFIERS app op.
            long token = Binder.clearCallingIdentity();
            AppOpsManager appOpsManager = (AppOpsManager) context.getSystemService(
                    Context.APP_OPS_SERVICE);
            try {
                if (appOpsManager.noteOpNoThrow(AppOpsManager.OPSTR_READ_DEVICE_IDENTIFIERS, uid,
                        callingPackage) == AppOpsManager.MODE_ALLOWED) {
                    return true;
                }
            } finally {
                Binder.restoreCallingIdentity(token);
            }
            // Allow access to a device / profile owner app.
            DevicePolicyManager devicePolicyManager =
                    (DevicePolicyManager) context.getSystemService(
                            Context.DEVICE_POLICY_SERVICE);
            if (devicePolicyManager != null && devicePolicyManager.checkDeviceIdentifierAccess(
                    callingPackage, pid, uid)) {
                return true;
            }
        }
        return reportAccessDeniedToReadIdentifiers(context, subId, pid, uid, callingPackage,
            message);
    }