public static PackageParser.Package getPackageInfoFromPackage(
String filePath, boolean collectSignature) {
PackageParser packageParser = new PackageParser(filePath);
File sourceFile = new File(filePath);
DisplayMetrics metrics = new DisplayMetrics();
metrics.setToDefaults();
PackageParser.Package pkg = packageParser.parsePackage(sourceFile, filePath, metrics, 0);
if (pkg != null && collectSignature) {
packageParser.collectCertificates(pkg, 0);
}
return pkg;
}
public static Drawable getIconFromPackage(Context context, String archiveFilePath) {
PackageParser packageParser = new PackageParser(archiveFilePath);
File sourceFile = new File(archiveFilePath);
DisplayMetrics metrics = new DisplayMetrics();
metrics.setToDefaults();
PackageParser.Package pkg = packageParser.parsePackage(sourceFile, archiveFilePath, metrics, 0);
if (pkg == null) {
return context.getResources().getDrawable(R.drawable.android);
}
ApplicationInfo info = pkg.applicationInfo;
Resources pRes = context.getResources();
AssetManager assmgr = new AssetManager();
assmgr.addAssetPath(archiveFilePath);
Resources res = new Resources(assmgr, pRes.getDisplayMetrics(), pRes.getConfiguration());
if (info.icon != 0) {
Drawable icon = res.getDrawable(info.icon);
return icon;
} else {
return context.getResources().getDrawable(R.drawable.android);
}
}
// Load all application into PackageManager
public PackageManagerService(Context context, boolean factoryTest) {
// Collect all system packages.
mSystemAppDir = new File(Environment.getRootDirectory(), "app");
mSystemInstallObserver = new AppDirObserver(mSystemAppDir.getPath(), OBSERVER_EVENTS, true);
mSystemInstallObserver.startWatching();
// scan all apks in /system/app
scanDirLI(
mSystemAppDir,
PackageParser.PARSE_IS_SYSTEM | PackageParser.PARSE_IS_SYSTEM_DIR,
scanMode,
0);
// private void scanDirLI(File dir, int flags, int scanMode, long currentTime)
{
// for every files
File file = new File(dir, files[i]);
PackageParser.Package pkg =
scanPackageLI(file, flags | PackageParser.PARSE_MUST_BE_APK, scanMode, currentTime);
// private PackageParser.Package scanPackageLI(File scanFile,
// int parseFlags, int scanMode, long currentTime)
// Scan a package and return the newly parsed package.
{
PackageParser pp = new PackageParser(scanPath);
// XXX: here to load and parse one package
final PackageParser.Package pkg = pp.parsePackage(scanFile, scanPath, mMetrics, parseFlags);
} // scanPackageLI()
// XXX: Verify certificates against what was last scanned
collectCertificatesLI(pp, ps, pkg, scanFile, parseFlags);
// private boolean collectCertificatesLI(PackageParser pp, PackageSetting ps,
// PackageParser.Package pkg, File srcFile, int parseFlags)
{
pp.collectCertificates(pkg, parseFlags);
}
} // scanDirLI()
}
// getPackageInfo()
public PackageInfo getPackageInfo(String packageName, int flags) {
PackageParser.Package p = mPackages.get(packageName);
generatePackageInfo(p, flags);
// PackageInfo generatePackageInfo(PackageParser.Package p, int flags)
{
// Everything is already preinstalled in PackageParser.Package
PackageParser.generatePackageInfo(p, null, flags, 0, 0);
// frameworks/base/core/java/android/content/pm/PackageParser.java
// public static PackageInfo generatePackageInfo(PackageParser.Package p,
// int gids[], int flags, long firstInstallTime, long lastUpdateTime)
{
PackageInfo pi = new PackageInfo();
pi.signatures = new Signature[N];
System.arraycopy(p.mSignatures, 0, pi.signatures, 0, N);
} // PackageParser.generatePackageInfo()
} // getPackageInfo()
} // PackageManagerService.getPackageInfo()