android.content.pm.PackageManagerInternal#canAccessComponent()源码实例Demo

private ArrayList<ResolveInfo> createFilterdResolveInfoList(List<ResolveInfo> list) {
    if (list == null) {
        return null;
    }
    final ArrayList<ResolveInfo> resultList = new ArrayList<>(list.size());
    final PackageManagerInternal pm = LocalServices.getService(PackageManagerInternal.class);
    final int callingUid = Binder.getCallingUid();
    final int callingUserId = UserHandle.getCallingUserId();
    for (ResolveInfo info : list) {
        if (pm.canAccessComponent(
                callingUid, info.activityInfo.getComponentName(), callingUserId)) {
            resultList.add(info);
        }
    }
    return resultList;
}
 

private ArrayList<SearchableInfo> createFilterdSearchableInfoList(List<SearchableInfo> list) {
    if (list == null) {
        return null;
    }
    final ArrayList<SearchableInfo> resultList = new ArrayList<>(list.size());
    final PackageManagerInternal pm = LocalServices.getService(PackageManagerInternal.class);
    final int callingUid = Binder.getCallingUid();
    final int callingUserId = UserHandle.getCallingUserId();
    for (SearchableInfo info : list) {
        if (pm.canAccessComponent(callingUid, info.getSearchActivity(), callingUserId)) {
            resultList.add(info);
        }
    }
    return resultList;
}
 

/**
 * Gets the name of the global search activity.
 */
public synchronized ComponentName getGlobalSearchActivity() {
    final PackageManagerInternal pm = LocalServices.getService(PackageManagerInternal.class);
    final int callingUid = Binder.getCallingUid();
    final int callingUserId = UserHandle.getCallingUserId();
    if (mCurrentGlobalSearchActivity != null
            && pm.canAccessComponent(callingUid, mCurrentGlobalSearchActivity, callingUserId)) {
        return mCurrentGlobalSearchActivity;
    }
    return null;
}
 

/**
 * Gets the name of the web search activity.
 */
public synchronized ComponentName getWebSearchActivity() {
    final PackageManagerInternal pm = LocalServices.getService(PackageManagerInternal.class);
    final int callingUid = Binder.getCallingUid();
    final int callingUserId = UserHandle.getCallingUserId();
    if (mWebSearchActivity != null
            && pm.canAccessComponent(callingUid, mWebSearchActivity, callingUserId)) {
        return mWebSearchActivity;
    }
    return null;
}