android.content.pm.PermissionInfo#PROTECTION_FLAG_PRE23()源码实例Demo

@TargetApi(23)
private boolean isDisplayablePermission(PermissionInfo pInfo, int existingReqFlags) {
    final int base = pInfo.protectionLevel & PermissionInfo.PROTECTION_MASK_BASE;
    final boolean isNormal = base == PermissionInfo.PROTECTION_NORMAL;
    final boolean isDangerous = base == PermissionInfo.PROTECTION_DANGEROUS
            || ((pInfo.protectionLevel & PermissionInfo.PROTECTION_FLAG_PRE23) != 0);

    // Dangerous and normal permissions are always shown to the user
    // this is matches the permission list in AppDetailsActivity
    if (isNormal || isDangerous) {
        return true;
    }

    final boolean isDevelopment = (pInfo.protectionLevel & PermissionInfo.PROTECTION_FLAG_DEVELOPMENT) != 0;
    final boolean wasGranted = (existingReqFlags & PackageInfo.REQUESTED_PERMISSION_GRANTED) != 0;

    // Development permissions are only shown to the user if they are already
    // granted to the app -- if we are installing an app and they are not
    // already granted, they will not be granted as part of the install.
    return isDevelopment && wasGranted;
}
 

private boolean isDisplayablePermission(PermissionInfo pInfo, int newReqFlags,
        int existingReqFlags) {
    final int base = pInfo.protectionLevel & PermissionInfo.PROTECTION_MASK_BASE;
    final boolean isNormal = (base == PermissionInfo.PROTECTION_NORMAL);

    // We do not show normal permissions in the UI.
    if (isNormal) {
        return false;
    }

    final boolean isDangerous = (base == PermissionInfo.PROTECTION_DANGEROUS)
            || ((pInfo.protectionLevel&PermissionInfo.PROTECTION_FLAG_PRE23) != 0);
    final boolean isRequired =
            ((newReqFlags&PackageInfo.REQUESTED_PERMISSION_REQUIRED) != 0);
    final boolean isDevelopment =
            ((pInfo.protectionLevel&PermissionInfo.PROTECTION_FLAG_DEVELOPMENT) != 0);
    final boolean wasGranted =
            ((existingReqFlags&PackageInfo.REQUESTED_PERMISSION_GRANTED) != 0);
    final boolean isGranted =
            ((newReqFlags&PackageInfo.REQUESTED_PERMISSION_GRANTED) != 0);

    // Dangerous and normal permissions are always shown to the user if the permission
    // is required, or it was previously granted
    if (isDangerous && (isRequired || wasGranted || isGranted)) {
        return true;
    }

    // Development permissions are only shown to the user if they are already
    // granted to the app -- if we are installing an app and they are not
    // already granted, they will not be granted as part of the install.
    if (isDevelopment && wasGranted) {
        if (localLOGV) Log.i(TAG, "Special perm " + pInfo.name
                + ": protlevel=0x" + Integer.toHexString(pInfo.protectionLevel));
        return true;
    }
    return false;
}
 

public boolean isPre23() {
    return (protectionLevel & PermissionInfo.PROTECTION_FLAG_PRE23) != 0;
}