android.content.Context#checkCallingPermission ( )源码实例Demo

private static boolean hasAppOpsPermission(
        Context context, int callingUid, String callingPackage) {
    if (callingPackage != null) {
        AppOpsManager appOps = (AppOpsManager) context.getSystemService(
                Context.APP_OPS_SERVICE);

        final int mode = appOps.noteOp(AppOpsManager.OP_GET_USAGE_STATS,
                callingUid, callingPackage);
        if (mode == AppOpsManager.MODE_DEFAULT) {
            // The default behavior here is to check if PackageManager has given the app
            // permission.
            final int permissionCheck = context.checkCallingPermission(
                    Manifest.permission.PACKAGE_USAGE_STATS);
            return permissionCheck == PackageManager.PERMISSION_GRANTED;
        }
        return (mode == AppOpsManager.MODE_ALLOWED);
    }
    return false;
}
 

/**
 * Check if the calling application has the correct permission to control Saiy.
 *
 * @param ctx the application context
 * @return true if the permission has been granted.
 */
public static boolean checkSaiyRemotePermission(@NonNull final Context ctx) {

    switch (ctx.checkCallingPermission(Manifest.permission.CONTROL_SAIY)) {

        case PackageManager.PERMISSION_GRANTED:
            if (DEBUG) {
                MyLog.i(CLS_NAME, "checkSaiyRemotePermission: PERMISSION_GRANTED");
            }
            return true;
        case PackageManager.PERMISSION_DENIED:
            if (DEBUG) {
                MyLog.i(CLS_NAME, "checkSaiyRemotePermission: PERMISSION_DENIED");
            }
        default:
            return false;
    }
}
 

/**
 * Check if the calling application has the correct permission to control Saiy.
 *
 * @param ctx        the application context
 * @param callingUid of the remote request
 * @return true if the permission has been granted.
 */
public static boolean checkSaiyPermission(@NonNull final Context ctx, final int callingUid) {

    final String packageName = ctx.getPackageManager().getNameForUid(callingUid);
    if (DEBUG) {
        MyLog.i(CLS_NAME, "checkSaiyPermission: " + packageName);
    }

    if (UtilsString.notNaked(packageName) && callingUid > 0) {

        if (!packageName.matches(ctx.getPackageName())) {

            switch (ctx.checkCallingPermission(Manifest.permission.CONTROL_SAIY)) {

                case PackageManager.PERMISSION_GRANTED:
                    if (DEBUG) {
                        MyLog.i(CLS_NAME, "checkSaiyPermission: PERMISSION_GRANTED");
                    }
                    return true;
                case PackageManager.PERMISSION_DENIED:
                default:
                    if (DEBUG) {
                        MyLog.i(CLS_NAME, "checkSaiyPermission: PERMISSION_DENIED");
                    }
                    return false;
            }
        } else {
            if (DEBUG) {
                MyLog.i(CLS_NAME, "checkSaiyPermission: self");
            }
            return true;
        }
    } else {
        MyLog.e(CLS_NAME, ctx.getString(ai.saiy.android.R.string.error_package_name_null));
    }

    return false;
}
 

public static boolean callerHasExtendedAccess(Context context) {
    String[] packagesForUid = context.getPackageManager().getPackagesForUid(Binder.getCallingUid());
    if (packagesForUid != null && packagesForUid.length != 0) {
        for (String packageName : packagesForUid) {
            if (isGooglePackage(context, packageName) || GMS_PACKAGE_NAME.equals(packageName))
                return true;
        }
    }
    return context.checkCallingPermission(Manifest.permission.EXTENDED_ACCESS) == PackageManager.PERMISSION_GRANTED;
}