PackageInstaller (https://developer.android.com/reference/android/content/pm/PackageInstaller.html)似乎已经在API 21 (Lollipop)开始添加,但是我没有找到任何关于如何通过此API安装APK的可靠代码示例。任何代码帮助将不胜感激。
我正在调查Android M预览版的COSU/Kiosk应用程序,并试图通过PackageInstaller API实现新功能"通过设备所有者静默安装和卸载应用程序"(https://developer.android.com/preview/api-overview.html#afw)。
找到了这些,但没有帮助:如何使用"PackageInstaller"安装/更新/删除APK类在Android L?你们# 39;年代"PackageInstaller"关于棒棒糖的课程,以及如何使用它?
没有找到任何Android示例应用程序。
这在Android 6.0及以上版本中是可能的。
- 让你的应用成为设备所有者。
一旦你的应用程序获得了设备所有者的许可,我们就可以静默地安装、卸载和更新,而无需任何用户干预。
public static boolean installPackage(Context context, InputStream in, String packageName)
throws IOException {
PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(
PackageInstaller.SessionParams.MODE_FULL_INSTALL);
params.setAppPackageName(packageName);
// set params
int sessionId = packageInstaller.createSession(params);
PackageInstaller.Session session = packageInstaller.openSession(sessionId);
OutputStream out = session.openWrite("COSU", 0, -1);
byte[] buffer = new byte[65536];
int c;
while ((c = in.read(buffer)) != -1) {
out.write(buffer, 0, c);
}
session.fsync(out);
in.close();
out.close();
session.commit(createIntentSender(context, sessionId));
return true;
}
private static IntentSender createIntentSender(Context context, int sessionId) {
PendingIntent pendingIntent = PendingIntent.getBroadcast(
context,
sessionId,
new Intent(ACTION_INSTALL_COMPLETE),
0);
return pendingIntent.getIntentSender();
}
卸载:
String appPackage = "com.your.app.package";
Intent intent = new Intent(getActivity(), getActivity().getClass());
PendingIntent sender = PendingIntent.getActivity(getActivity(), 0, intent, 0);
PackageInstaller mPackageInstaller = getActivity().getPackageManager().getPackageInstaller();
mPackageInstaller.uninstall(appPackage, sender.getIntentSender());
明白了,下面是代码:
try
{
PackageInstaller pi = app.getPackageManager().getPackageInstaller();
int sessId = pi.createSession(new PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL));
PackageInstaller.Session session = pi.openSession(sessId);
// .. write updated APK file to out
long sizeBytes = 0;
final File file = new File(filepathApk);
if (file.isFile())
{
sizeBytes = file.length();
}
InputStream in = null;
OutputStream out = null;
in = new FileInputStream(filepathApk);
out = session.openWrite("my_app_session", 0, sizeBytes);
int total = 0;
byte[] buffer = new byte[65536];
int c;
while ((c = in.read(buffer)) != -1)
{
total += c;
out.write(buffer, 0, c);
}
session.fsync(out);
in.close();
out.close();
System.out.println("InstallApkViaPackageInstaller - Success: streamed apk " + total + " bytes");
// fake intent
Context app = this;
Intent intent = new Intent(app, AlarmReceiver.class);
PendingIntent alarmtest = PendingIntent.getBroadcast(app,
1337111117, intent, PendingIntent.FLAG_UPDATE_CURRENT);
session.commit(alarmtest.getIntentSender());
session.close();
}
catch (Exception ex)
{
ex.printStackTrace();
}