问题
is it possible to update a device owner app by itself silently? My app is set to device owner, i want it to update itself silently. is it possible? the method i'm using is given below,
private void install(Context context,String packageName,String apkPath){
PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL);
params.setAppPackageName(context.getPackageName());
try {
int sessionId = packageInstaller.createSession(params);
PackageInstaller.Session session = packageInstaller.openSession(sessionId);
OutputStream out = session.openWrite(packageName,0,-1);
File apkFile = new File(apkPath);
InputStream in = new FileInputStream(apkFile);
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();
PendingIntent pendingIntent = PendingIntent.getBroadcast(context,sessionId,
new Intent("com.afwsamples.testdpc.INSTALL_COMPLETE"),0);
IntentSender intentSender = pendingIntent.getIntentSender();
session.commit(intentSender);
}catch (Exception e){
Log.d("PackageInstaller","package installer exception");
}
}
I can install another package using this method through my app but not my app itself. Here is what the log shows when I try to install the same app which is a device owner.
--------- beginning of system
07-24 13:53:13.329 4039-4063/system_process I/PackageManager: init_copy
idx=0: InstallParams{a5de1df file=/data/app/vmdl1864928398.tmp cid=null}
07-24 13:53:13.338 4039-4063/system_process I/PackageManager: mcs_bound
startCopy UserHandle{0}: InstallParams{a5de1df
file=/data/app/vmdl1864928398.tmp cid=null}
07-24 13:53:13.341 3709-4027/? D/audio_hw_primary:
out_standby(0xf48e3000)
do_output_standby(0xf48e3000)
07-24 13:53:13.341 3709-4027/? I/audio_hw_primary: remove out
(0xf48e3000) from index 0
close pcm 0xf1b90380
07-24 13:53:13.347 4039-4063/system_process D/PackageManager:
/data/app/vmdl1864928398.tmp already staged; skipping copy
07-24 13:53:13.348 4039-4063/system_process D/PackageManager:
installPackageLI: path=/data/app/vmdl1864928398.tmpjava.lang.Throwable
at com.android.server.pm.PackageManagerService
.installPackageLI(PackageManagerService.java:12247)
at com.android.server.pm.PackageManagerService.-
wrap25(PackageManagerService.java)
at com.android.server.pm.PackageManagerService$9
.run(PackageManagerService.java:10176)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.os.HandlerThread.run(HandlerThread.java:61)
at com.android.server.ServiceThread.run(ServiceThread.java:46)
07-24 13:53:13.360 4039-4063/system_process W/PackageParser: Ignoring
duplicate uses-permissions/uses-permissions-sdk-m:
android.permission.INTERNET in package: com.xyz.cocoapp at: Binary
XML file line #23
Ignoring duplicate uses-permissions/uses-permissions-sdk-m:
android.permission.ACCESS_NETWORK_STATE in package: com.xyz.cocoapp
at: Binary XML file line #24
07-24 13:53:13.361 4039-4063/system_process W/PackageParser: Ignoring
duplicate uses-permissions/uses-permissions-sdk-m:
android.permission.WAKE_LOCK in package: com.xyz.cocoapp at: Binary
XML file line #30
Ignoring duplicate uses-permissions/uses-permissions-sdk-m:
android.permission.WAKE_LOCK in package: com.xyz.cocoapp at: Binary
XML file line #32
07-24 13:53:13.362 4039-4063/system_process W/PackageParser: Ignoring
duplicate uses-permissions/uses-permissions-sdk-m:
android.permission.GET_ACCOUNTS in package: com.xyz.cocoapp at:
Binary XML file line #33
07-24 13:53:13.363 4039-4063/system_process W/PackageParser: Ignoring
duplicate uses-permissions/uses-permissions-sdk-m:
android.permission.READ_EXTERNAL_STORAGE in package: com.xyz.cocoapp
at: Binary XML file line #45
07-24 13:53:13.369 4039-4063/system_process W/PackageManager:
installPackageLI
07-24 13:53:13.391 4039-4063/system_process I/art:
Starting a blocking GC Explicit
07-24 13:53:13.469 4039-4063/system_process I/art:
Explicit concurrent mark sweep GC freed 58637(2MB) AllocSpace objects,
10(340KB) LOS objects,
33% free, 10MB/15MB, paused 3.604ms total 77.999ms
07-24 13:53:13.470 3710-3710/?
E/installd: Couldn't opendir/data/app/vmdl1864928398.tmp: No such file
or directory
As per this stackoverflow question selfupdate of device owner app is possible. helps please..
来源：https://stackoverflow.com/questions/51503258/device-owner-app-update-itself-silently