Android O PackageInstaller 解析 _Installer

幼敏悟过人，读书辄成诵。这篇文章主要讲述Android O PackageInstaller 解析相关的知识，希望能为你提供帮助。
【Android O PackageInstaller 解析】android O 8.0

1.srccomandroidpackageinstallerpermissionmodePermissionGroups.java

@Override public List< PermissionGroup> loadInBackground() { ArraySet< String> launcherPkgs = Utils.getLauncherPackages(getContext()); PermissionApps.PmCache pmCache = new PermissionApps.PmCache( getContext().getPackageManager()); List< PermissionGroup> groups = new ArrayList< > (); Set< String> seenPermissions = new ArraySet< > (); PackageManager packageManager = getContext().getPackageManager(); List< PermissionGroupInfo> groupInfos = packageManager.getAllPermissionGroups(0); for (PermissionGroupInfo groupInfo : groupInfos) { // Mare sure we respond to cancellation. if (isLoadInBackgroundCanceled()) { return Collections.emptyList(); }// 得到权限组里的所有权限 // Get the permissions in this group. final List< PermissionInfo> groupPermissions; try { groupPermissions = packageManager.queryPermissionsByGroup(groupInfo.name, 0); } catch (PackageManager.NameNotFoundException e) { continue; }boolean hasRuntimePermissions = false; // 查看某个权限组是否含有运行时权限 // Cache seen permissions and see if group has runtime permissions. for (PermissionInfo groupPermission : groupPermissions) { seenPermissions.add(groupPermission.name); if ((groupPermission.protectionLevel & PermissionInfo.PROTECTION_MASK_BASE) == PermissionInfo.PROTECTION_DANGEROUS & & (groupPermission.flags & PermissionInfo.FLAG_INSTALLED) != 0 & & (groupPermission.flags & PermissionInfo.FLAG_REMOVED) == 0) { hasRuntimePermissions = true; } }// 权限组里没有运行时权限，我们不感兴趣，继续循环查询 // No runtime permissions - not interesting for us. if (!hasRuntimePermissions) { continue; }// 如果权限组里含有运行时权限，则继续往下执行// 获取权限组的label CharSequence label = loadItemInfoLabel(groupInfo); Drawable icon = loadItemInfoIcon(groupInfo); // 根据权限组新建 PermissionApps 对象 PermissionApps permApps = new PermissionApps(getContext(), groupInfo.name, null, pmCache); permApps.refreshSync(); // 创建 PermissionGroup 对象 // Create the group and add to the list. PermissionGroup group = new PermissionGroup(groupInfo.name, groupInfo.packageName, label, icon, permApps.getTotalCount(launcherPkgs), permApps.getGrantedCount(launcherPkgs)); groups.add(group); }// 获取所有的安装包权限 // Make sure we add groups for lone runtime permissions. List< PackageInfo> installedPackages = getContext().getPackageManager() .getInstalledPackages(PackageManager.GET_PERMISSIONS); // We will filter out permissions that no package requests. Set< String> requestedPermissions = new ArraySet< > (); for (PackageInfo installedPackage : installedPackages) { if (installedPackage.requestedPermissions == null) { continue; } // 将安装包请求的权限加入到列表中 for (String requestedPermission : installedPackage.requestedPermissions) { requestedPermissions.add(requestedPermission); } }for (PackageInfo installedPackage : installedPackages) { if (installedPackage.permissions == null) { continue; }// 自定义的权限 for (PermissionInfo permissionInfo : installedPackage.permissions) { // If we have handled this permission, no more work to do. if (!seenPermissions.add(permissionInfo.name)) { continue; }// 关心的是运行时权限 // We care only about installed runtime permissions. if ((permissionInfo.protectionLevel & PermissionInfo.PROTECTION_MASK_BASE) != PermissionInfo.PROTECTION_DANGEROUS || (permissionInfo.flags & PermissionInfo.FLAG_INSTALLED) == 0) { continue; }// 没有app使用那个自定义的权限 // If no app uses this permission, if (!requestedPermissions.contains(permissionInfo.name)) { continue; }CharSequence label = loadItemInfoLabel(permissionInfo); Drawable icon = loadItemInfoIcon(permissionInfo); PermissionApps permApps = new PermissionApps(getContext(), permissionInfo.name, null, pmCache); permApps.refreshSync(); // Create the group and add to the list. PermissionGroup group = new PermissionGroup(permissionInfo.name, permissionInfo.packageName, label, icon, permApps.getTotalCount(launcherPkgs), permApps.getGrantedCount(launcherPkgs)); groups.add(group); } }Collections.sort(groups); return groups; }

2.PermissionApps.java

/** * Refresh the state and do not return until it finishes. Should not be called while an {@link * #refresh async referesh} is in progress. */ public void refreshSync() { mSkipUi = true; createMap(loadPermissionApps()); }

3.
srccomandroidpackageinstallerpermissionutilsEventLogger.java

/** * For each permission there are four events. The events are in the order of * #ALL_DANGEROUS_PERMISSIONS. The four events per permission are (in that order): "requested", * "granted", "denied", and "revoked". */ public class EventLogger { private static final String LOG_TAG = EventLogger.class.getSimpleName(); /** All dangerous permission names in the same order as the events in MetricsEvent */ private static final List< String> ALL_DANGEROUS_PERMISSIONS = Arrays.asList( Manifest.permission.READ_CALENDAR, Manifest.permission.WRITE_CALENDAR, Manifest.permission.CAMERA, Manifest.permission.READ_CONTACTS, Manifest.permission.WRITE_CONTACTS, Manifest.permission.GET_ACCOUNTS, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.RECORD_AUDIO, Manifest.permission.READ_PHONE_STATE, Manifest.permission.CALL_PHONE, Manifest.permission.READ_CALL_LOG, Manifest.permission.WRITE_CALL_LOG, Manifest.permission.ADD_VOICEMAIL, Manifest.permission.USE_SIP, Manifest.permission.PROCESS_OUTGOING_CALLS, Manifest.permission.READ_CELL_BROADCASTS, Manifest.permission.BODY_SENSORS, Manifest.permission.SEND_SMS, Manifest.permission.RECEIVE_SMS, Manifest.permission.READ_SMS, Manifest.permission.RECEIVE_WAP_PUSH, Manifest.permission.RECEIVE_MMS, Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_PHONE_NUMBERS, Manifest.permission.ANSWER_PHONE_CALLS, Manifest.permission.ACCEPT_HANDOVER); private static final List< String> ALL_APPOP_PERMISSIONS = Arrays.asList( Manifest.permission.ACCESS_NOTIFICATIONS, Manifest.permission.SYSTEM_ALERT_WINDOW, Manifest.permission.WRITE_SETTINGS, Manifest.permission.REQUEST_INSTALL_PACKAGES); ......}

4.
srccomandroidpackageinstallerpermissionutilsUtils.java

public static final String OS_PKG = "android"; public static final String[] MODERN_PERMISSION_GROUPS = { Manifest.permission_group.CALENDAR, Manifest.permission_group.CAMERA, Manifest.permission_group.CONTACTS, Manifest.permission_group.LOCATION, Manifest.permission_group.SENSORS, Manifest.permission_group.SMS, Manifest.permission_group.PHONE, Manifest.permission_group.MICROPHONE, Manifest.permission_group.STORAGE }; private static final Intent LAUNCHER_INTENT = new Intent(Intent.ACTION_MAIN, null) .addCategory(Intent.CATEGORY_LAUNCHER);