Add support for Android 9 #227

shobhitagarwal1612 · 2019-03-25T16:19:19Z

Closes #191

What has been done to verify that this works as intended?

Tested by sending forms multiple times on MotoG5 Plus (Android 9)

Why is this the best possible solution? Were any other approaches considered?

Not the best solution but this is the best I could come up with. Please suggest if you have any other approaches. So the current approach goes like this:

The first problem was that the IP of the host resolved by the receiver was incorrect (default isn't 192.168.43.1 in Android 9). So, now we send IP along with the QR Code and get IP from network interface instead of from dhcp server
Removed startLocalOnlyHotspot as server socket wasn't reachable with that way. It works perfectly to start/stop hotspot but the ultimate goal wasn't being served. I searched a lot but wasn't able to find anything solid as to why the sockets were unreachable. Although, the host was pingable (tested by ping <host_ip> from the shell of the receiver device)
Only system apps have permission to read/write wifi hotspot configurations. So, we have to rely on manual entry of ssid and password which happens on the first launch of the app for Android 9 devices.
Since users might not change their default hotspot's name, I had to remove the filter which only shows devices running the same app. We can explore NSD for that purpose in the future.
Also fixes a bug when play services are not available

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

Need feedback for this approach. Might still contain bugs but at least it works now.

If you are testing this PR, then uninstall the currently installed app. Need shared preferences to be cleared.

Before submitting this PR, please make sure you have:

run ./gradlew checkCode and confirmed all checks still pass OR confirm CircleCI build passes
verified that any code or assets from external sources are properly credited in comments and/or in the about file.

shobhitagarwal1612 · 2019-03-28T10:05:25Z

I've requested a review from people I remember might have mentioned that they have an Android 9 device to try this PR out. If I forgot someone's name, then apologies for that.

udhay24 · 2019-03-28T14:07:05Z

@shobhitagarwal1612 i don't have a android 9 device now but i can get my hands on one by monday

lakshyagupta21 · 2019-03-28T15:29:48Z

@shobhitagarwal1612 Please fix the conflicts.

ajay-prabhakar

@shobhitagarwal1612 It is working fine for me now and close the support for Android 8.0.0 when this is merging, I just now checked it is working fine as expected

shobhitagarwal1612 · 2019-03-30T16:06:54Z

Thanks for testing it out @Chromicle and I'm glad that it worked for you. Could you please mention which all devices you used for testing this PR? It would be nice to keep a track of devices and android versions

ajay-prabhakar · 2019-03-31T07:59:56Z

Samsung J8 of Android 8.0.0 and samsung note 3 of Android 9 these all devices I tested it is working fine

shobhitagarwal1612 · 2019-04-04T17:55:28Z

@shobhitagarwal1612 Please fix the conflicts.

@lakshyagupta21 Done

udhay24 · 2019-04-06T15:35:21Z

@shobhitagarwal1612 i just tested it in samsung j7(2016) - android 8.1. I noticed that AlertDialog keeps popping one after the another until the app becomes un-responsive

shobhitagarwal1612 · 2019-04-06T17:04:22Z

I found another bug, not the one you have mentioned @udhay24. Also, I tested on Android 9 as I don't have an Android 8 device

ajay-prabhakar · 2019-04-06T17:18:37Z

@udhay24 I just now checked I did not find that type of behavior in android 8.0.0
@shobhitagarwal1612 I also found the bug is when the hotspot is turned on initially now also it is asking to on the hotspot

shobhitagarwal1612 · 2019-04-06T17:22:31Z

I didn't find a way to get the status of the hotspot in Android 9. Hence the alert dialog.

My intention behind this PR was to give a push to this GSoC project and get the base ready i.e. sending/receiving so that you guys can focus on new features and overall stability. All these issues can be opened separately and fixed during the summer

udhay24 · 2019-04-06T17:23:53Z

@shobhitagarwal1612 i just tested it in samsung j7(2016) - android 8.1. I noticed that AlertDialog keeps popping one after the another until the app becomes un-responsive

@shobhitagarwal1612 i forgot to mention that the location was already enabled but the app was still asking to enable the location.

shobhitagarwal1612 · 2019-04-06T17:32:45Z

@udhay24 I was able to reproduce the issue. Please review again

https://github.com/evernote/android-job/issues/216

Add a helper class for shared preferences

Remove localOnlyHotspot, turns out server socket doesn't work on it. I tried many alternatives but none seem to work. The connection is unreachable no matter what over localOnlyHotspot. So, the only way out seems to be using system enabled hotspot triggered manually by user

This is a regression of updating sdk version to 28, Needs to fixed separately

huangyz0918

Great fix for android 9.0, I have tested it using Nexus 6P and Pixel XL and they both worked!
Several improvements for your reference.

huangyz0918 · 2019-04-28T07:59:58Z

skunkworks_crow/src/main/java/org/odk/share/activities/ReceiverActivity.java

        return ssid.contains(getString(R.string.hotspot_name_suffix)) ||
-                ssid.contains(getString(R.string.hotspot_name_prefix_oreo));
-    }


If the code is useless, please remove them or making comments to clarify the reason for keeping them.

huangyz0918 · 2019-04-28T08:03:53Z

skunkworks_crow/src/main/java/org/odk/share/activities/ReceiverActivity.java

                    port = (Integer) obj.get(PORT);
                    isProtected = (boolean) obj.get(PROTECTED);
                    if (isProtected) {
                        passwordScanned = (String) obj.get(PASSWORD);
                    }

-                    Timber.d("Scanned results " + ssidScanned + " " + port + " " + isProtected + " " + passwordScanned);
+                    Timber.d("Scanned results " + wifiNetworkSSID + " " + port + " " + isProtected + " " + passwordScanned);


I suggest removing all the test log if they are only used for debugging, or just comment them.

huangyz0918 · 2019-04-28T08:04:06Z

skunkworks_crow/src/main/java/org/odk/share/activities/ReceiverActivity.java

@@ -397,19 +399,25 @@ public void onActivityResult(int requestCode, int resultCode, Intent data) {
                // request was canceled...
                Timber.i("QR code scanning cancelled");
            } else {
-                Timber.d("RESULT " + result);


The same as above.

huangyz0918 · 2019-04-28T08:08:02Z

skunkworks_crow/src/main/java/org/odk/share/activities/ReceiverActivity.java

                    } else {
-                        Toast.makeText(this, "already connected to " + ssidScanned, Toast.LENGTH_SHORT).show();


Can we extract the toasts into something like ToastUtils.java? You can refer to Collect's. Something for showing dialogs can be refactor as well.

huangyz0918 · 2019-04-28T08:11:04Z

skunkworks_crow/src/main/java/org/odk/share/activities/SendActivity.java

@@ -106,11 +102,10 @@ protected void onCreate(Bundle savedInstanceState) {
            formIds = getIntent().getLongArrayExtra(FORM_IDS);
        }

-
        port = SocketUtils.getPort();

        if (port == -1) {


-1 can be replaced by a static variable with meaningful name, like NO_AVAILABLE_PORT_CODE?

huangyz0918 · 2019-04-28T08:12:50Z

skunkworks_crow/src/main/java/org/odk/share/activities/SendActivity.java

+                    isHotspotInitiated = true;
+
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                        // do nothing


//TODO: will be helpful.

huangyz0918 · 2019-04-28T08:15:19Z

skunkworks_crow/src/main/java/org/odk/share/activities/SendActivity.java

-        alertDialog.setCancelable(false);
-        alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, getString(R.string.ok), quitListener);
-        alertDialog.show();
+        new AlertDialog.Builder(this)


So many similar dialogs, can we building something like DailogFactory.java which has different static methods can return dialogs?

huangyz0918 · 2019-04-28T08:16:18Z

skunkworks_crow/src/main/java/org/odk/share/activities/SendActivity.java

-        }
-
-        if (openSettings) {
+        } else if (openSettings) {


openSettings is a bad name for a boolean value.

huangyz0918 · 2019-04-28T08:19:34Z

skunkworks_crow/src/main/java/org/odk/share/network/WifiHotspotManager.java

+    }
+
+    public void stopHotspot() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {


For those version checks, we can build a boolean variable like isApiHigherThanO = ..., can call isApiHigherThanO or !isApiHigherThanO if necessary, which can simplify the code and make them better to read.

shobhitagarwal1612 · 2019-07-05T05:49:37Z

@lakshyagupta21 What are your thoughts about this PR? Do you think this would be a good solution to some of the mentioned wifi hotspot issues?
If yes, then would it be a feasible and good task for @huangyz0918 to finish off the remaining work in this PR by adjusting some of the non-crucial tasks in his timeline after he is done with #260?

lakshyagupta21 · 2019-07-05T06:04:47Z

@lakshyagupta21 What are your thoughts about this PR? Do you think this would be a good solution to some of the mention wifi hotspot issues?

Even I think that should resolve some of the issues. yeah it would be a good idea to let @huangyz0918 pick this up, if he needs some help with the Android 9 testing in case he doesn't have one then we can hop in.

huangyz0918 · 2019-07-09T13:11:19Z

yeah it would be a good idea to let @huangyz0918 pick this up, if he needs some help with the Android 9 testing in case he doesn't have one then we can hop in.

Yeah I'd like to, but I don't have two android 9 devices currently, so I may have some trouble testing the changes. Can you help me to test the PR #260 using android 9 first? @lakshyagupta21 I want to know what kinds of issue in android 9 with bluetooth feature (I tested the PR in android 8.0.0, 8.0.1 and 6.0.1 with success), for you guys have android 9 devices @Chromicle @udhay24 @iadeelzafar , I think it will be very nice to have a quick test with that too, thanks so much!!

shobhitagarwal1612 · 2019-07-10T13:25:15Z

You don't need to have both android 9 devices at the same time. The same device can be used for validating sending/receiving one at a time.

huangyz0918 · 2019-07-10T13:29:33Z

You don't need to have both android 9 devices at the same time. The same device can be used for validating sending/receiving one at a time.

I think I can flash my Nexus 6P to android 9 after #260 was merged. If there are issues with android 9, we can open another issue for that.

lakshyagupta21 · 2019-07-22T03:07:46Z

skunkworks_crow/src/main/java/org/odk/share/activities/SendActivity.java

@@ -88,9 +87,6 @@
    private long[] formIds;
    private int mode;

-    private WifiManager.LocalOnlyHotspotReservation hotspotReservation;


@shobhitagarwal1612 Is there any specific reason for removing this class and its API usage? I think Google has introduced this Class and some APIs so that hotspot connection can be made and two nearby devices can share the data locally without sharing the user's mobile data.

shobhitagarwal1612 requested a review from lakshyagupta21 March 25, 2019 16:27

shobhitagarwal1612 marked this pull request as ready for review March 27, 2019 00:42

shobhitagarwal1612 requested review from ajay-prabhakar, huangyz0918, iadeelzafar and udhay24 March 28, 2019 10:04

ajay-prabhakar approved these changes Mar 30, 2019

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shobhitagarwal1612 force-pushed the issue-191 branch from 42223c6 to d0c1793 Compare March 30, 2019 16:19

shobhitagarwal1612 force-pushed the issue-191 branch from d0c1793 to 1fafb0c Compare April 4, 2019 17:52

shobhitagarwal1612 force-pushed the issue-191 branch from 1fafb0c to a8b82bd Compare April 6, 2019 17:02

shobhitagarwal1612 added 8 commits April 6, 2019 23:05

Enable gcm to schedule tasks in devices without play-services

ea99aeb

https://github.com/evernote/android-job/issues/216

Publish wifi hotspot enable/disable event to RxBus

f832c65

Add null check and minor code refactor

5f22886

Get wifi access point ip using network interface

08fc778

Remove defaults from preferences

ac7954f

Add a helper class for shared preferences

Add instructions to configure hotspot ssid/password for Android 9

0a18e0f

Add a new class to handle diversity across android versions

b6f2856

shobhitagarwal1612 added 6 commits April 6, 2019 23:05

Rename WifiActivity to ReceiverActivity

7647e46

Remove redundant code

c0a3d67

Code quality fixes

0251a26

Fix bug in QR Code Scanner

f5d4595

Disable notifications for android oreo and above

9272d93

This is a regression of updating sdk version to 28, Needs to fixed separately

Fix bugs

9e8fc60

shobhitagarwal1612 force-pushed the issue-191 branch from bbeff6d to 9e8fc60 Compare April 6, 2019 17:35

ajay-prabhakar mentioned this pull request Apr 6, 2019

Add app info in About #175

Open

huangyz0918 reviewed Apr 28, 2019

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ajay-prabhakar mentioned this pull request May 29, 2019

IllegalStateException: Caller already has an active LocalOnlyHotspot request #255

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lakshyagupta21 reviewed Jul 22, 2019

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Add support for Android 9 #227

Add support for Android 9 #227

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		} else {
		Toast.makeText(this, "already connected to " + ssidScanned, Toast.LENGTH_SHORT).show();

Add support for Android 9 #227

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Add support for Android 9 #227

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shobhitagarwal1612 commented Mar 25, 2019 • edited Loading

What has been done to verify that this works as intended?

Why is this the best possible solution? Were any other approaches considered?

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

Before submitting this PR, please make sure you have:

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