Develop Reference

E/zzf: Problem retrieving SafetyNet Token: 7:

I have getting the error when i try to register to the application. when i enter my phone number and register it goes to otp verification but did not get the otp. But it give me an error saying problem to get safety net token:7. Please help me through it. It is working before but now getting error.
I have add sha-1 and sha-256 as well in firebase setting.
my error
E/zzf: Problem retrieving SafetyNet Token: 7:
E/FirebearCryptoHelper: Exception encountered during crypto setup:
Protocol message contained an invalid tag (zero).
KeysetManager failed to initialize - unable to get Public key
E/RecaptchaActivity: Could not generate an encryption key for reCAPTCHA - cancelling flow.
W/System: Ignoring header X-Firebase-Locale because its value was null.
V/FA: Screen exposed for less than 1000 ms. Event not sent. time: 367
V/FA: Activity paused, time: 824349680
E/zzf: Failed to get reCAPTCHA token with error [An internal error has occurred. [ Failed to
generate/retrieve public encryption key for reCAPTCHA flow. ]]- calling backend without app
verification

openVPN not working on Android 10 in androidstudio

hi i use this project in my app :
https://github.com/schwabe/ics-openvpn
and write a vpn application
its work fine on all android version because on android 10 i give this error on logcat :
2020-04-01 01:47:56.914 2540-2839/com.vpnfree.approid I/OpenVPN: Starting openvpn
2020-04-01 01:47:56.920 2540-2839/com.vpnfree.approid E/OpenVPN: OpenVPNThread Got java.lang.NullPointerException: Attempt to invoke virtual method 'void java.lang.Process.destroy()' on a null object reference
2020-04-01 01:47:56.920 2540-2839/com.packagename.approid E/level: LEVEL_NOTCONNECTED
2020-04-01 01:47:56.959 2540-2839/com.packagename.approid I/OpenVPN: Exiting

It's not working because when you call destroy(), you are calling it on a null object. This is throwing an NPE can preventing you from connecting.

This null pointer exception can be the result of process builder starting a new process by loading a binary from assets which is not supported by android.
You can confirm this case by using e.printStackTrace(); in catch clause near line 187 - line 188 of method private void startOpenVPNThreadArgs(String[] argv) which can be found in OpenVPNThread.java.
If you get error 13 in your log cat like this:
java.io.IOException: Cannot run program "...": error=13, Permission denied
Then you might be using older version of ics-openvpn. In this case please refer to this:
My answer to: "Creating VPN by using OpenVPN"
My comment on the "What change in API 29" issue in the schwabe /
ics-openvpn GitHub repository
I hope that this will resolve your issue.

android:extractNativeLibs="true"
tools:replace="android:extractNativeLibs"
Add This Two Lines In Your Manifest Application

Why location doesn't work in app with android 10?

I have an app which streams video and it ensure making photos from another device. It is saving location of device in photo information. It works correctly on older android versions for example 6.0 Unfortunately it doesn't work on android 10 even after updating an app to SDK 29. Do you have any ideas?
When I switch off gps in android 10 phone everything goes well.
Below errors from android studio:
E/i.aoiAgent11EN: Unknown bits set in runtime_flags: 0x8000
I/Perf: Connecting to perf service.
I/FeatureParser: can't find cepheus.xml in assets/device_features/,it may be in /system/etc/device_features
E/libc: Access denied finding property "ro.vendor.df.effect.conflict"
E/Perf: Fail to get file list pl.biz.aoi.aoiAgent11ENG
getFolderSize() : Exception_1 = java.lang.NullPointerException: Attempt to get length of null array
Fail to get file list pl.biz.aoi.aoiAgent11ENG
getFolderSize() : Exception_1 = java.lang.NullPointerException: Attempt to get length of null array
E/AudioPlayer: CPP is working
java.lang.IllegalStateException: Unable to retrieve AudioTrack pointer for getPosition()
at android.media.AudioTrack.native_get_position(Native Method)
at android.media.AudioTrack.getPlaybackHeadPosition(AudioTrack.java:1699)
at pl.biz.aoi.aoiAgent11ENG.media.in.audio.player.SpeakerOutputStream.getPlayed(SpeakerOutputStream.java:46)
at pl.biz.aoi.aoiAgent11ENG.media.in.audio.player.G711AudioPlayer.writeSilenceBufferIfNeeded(G711AudioPlayer.java:136)
at pl.biz.aoi.aoiAgent11ENG.media.in.audio.player.G711AudioPlayer.run(G711AudioPlayer.java:111)
at java.lang.Thread.run(Thread.java:919)
I/chatty: uid=10262(pl.biz.aoi.aoiAgent11ENG) identical 18 lines
E/AudioPlayer: CPP is working
java.lang.IllegalStateException: Unable to retrieve AudioTrack pointer for getPosition()
at android.media.AudioTrack.native_get_position(Native Method)
at android.media.AudioTrack.getPlaybackHeadPosition(AudioTrack.java:1699)
at pl.biz.aoi.aoiAgent11ENG.media.in.audio.player.SpeakerOutputStream.getPlayed(SpeakerOutputStream.java:46)
at pl.biz.aoi.aoiAgent11ENG.media.in.audio.player.G711AudioPlayer.writeSilenceBufferIfNeeded(G711AudioPlayer.java:136)
at pl.biz.aoi.aoiAgent11ENG.media.in.audio.player.G711AudioPlayer.run(G711AudioPlayer.java:111)
at java.lang.Thread.run(Thread.java:919)

sinch video call camera permission problem with Android pei (9)

update
I am developing a small app which requires camera permission. I can handle the run time permission but the real problem is that when I relay to Sinchpayload and go to incomming call activity. This activity should request permissions (camera and other 2 permissions). But instead of showing the permission dialogue, it crash my app because of security exception. this thing happen only if I request camera permission - not happen to other permissions and only on Android 9 with camera "2" Api - Android 8.1 and lower works fine . THIS PROBLEM STILL HAPPEN WITH THE SINCH SAMPLE PUSH. The permission dialogue will show if start activity with intent as usual. This is the error :
-------- beginning of crash
2019-02-10 22:11:55.390 2113-2681/com.example.myapp.app E/AndroidRuntime: FATAL EXCEPTION: VideoCapturerThread
Process: com.example.myapp.app, PID: 2113
java.lang.SecurityException: validateClientPermissionsLocked:1054: Caller "com.example.myapp.app" (PID 10319, UID 2113) cannot open camera "1" without camera permission
at android.hardware.camera2.CameraManager.throwAsPublicException(CameraManager.java:747)
at android.hardware.camera2.CameraManager.openCameraDeviceUserAsync(CameraManager.java:405)
at android.hardware.camera2.CameraManager.openCameraForUid(CameraManager.java:567)
at android.hardware.camera2.CameraManager.openCamera(CameraManager.java:495)
at org.webrtc.Camera2Session.openCamera(Unknown Source:44)
at org.webrtc.Camera2Session.start(Unknown Source:60)
at org.webrtc.Camera2Session.<init>(Unknown Source:73)
at org.webrtc.Camera2Session.create(Unknown Source:17)
at org.webrtc.Camera2Capturer.createCameraSession(Unknown Source:17)
at org.webrtc.CameraCapturer$5.run(Unknown Source:52)
at android.os.Handler.handleCallback(Handler.java:891)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:207)
at android.os.HandlerThread.run(HandlerThread.java:65)
Caused by: android.os.ServiceSpecificException: validateClientPermissionsLocked:1054: Caller "com.example.myapp.app" (PID 10319, UID 2113) cannot open camera "1" without camera permission (code 1)
at android.os.Parcel.createException(Parcel.java:1967)
at android.os.Parcel.readException(Parcel.java:1921)
at android.os.Parcel.readException(Parcel.java:1871)
at android.hardware.ICameraService$Stub$Proxy.connectDevice(ICameraService.java:343)
at android.hardware.camera2.CameraManager.openCameraDeviceUserAsync(CameraManager.java:369)
at android.hardware.camera2.CameraManager.openCameraForUid(CameraManager.java:567) 
at android.hardware.camera2.CameraManager.openCamera(CameraManager.java:495) 
at org.webrtc.Camera2Session.openCamera(Unknown Source:44) 
at org.webrtc.Camera2Session.start(Unknown Source:60) 
at org.webrtc.Camera2Session.<init>(Unknown Source:73) 
at org.webrtc.Camera2Session.create(Unknown Source:17) 
at org.webrtc.Camera2Capturer.createCameraSession(Unknown Source:17) 
at org.webrtc.CameraCapturer$5.run(Unknown Source:52) 
at android.os.Handler.handleCallback(Handler.java:891) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:207) 
at android.os.HandlerThread.run(HandlerThread.java:65)`
and this is my code to request permissions :
if (Build.VERSION.SDK_INT>=23)
{
if (GlobalConstants.isAllPermissionsGrantedBefore_Video_Call(this)==false)
ActivityCompat.requestPermissions(
Video_incomming_call.this,
GlobalConstants.mPermissions_Video_Chat,
GlobalConstants.VIDEO_RECIEVE_CODE);
else {
Start_Calling();
}
} else Start_Calling();

The app permission dialog only shows in foreground.

MediaPlayer stops and restarts

I get a weird error.
I play with a MediaPlayer a mediastream (like shoutcast or icecast).
Sometimes suddenly on playing stream (total random) happens a error, the stream stops and restart.
OnErrorListener don't get triggered!
Logcat:
03-02 17:50:36.274: W/MediaPlayer(16799): info/warning (702, 0)
03-02 17:50:36.274: I/MediaPlayer(16799): Info (702,0)
or like this:
03-02 17:50:14.250: W/MediaPlayer(16799): info/warning (703, 0)
03-02 17:50:14.250: W/MediaPlayer(16799): info/warning (701, 0)
03-02 17:50:14.250: I/MediaPlayer(16799): Info (703,0)
03-02 17:50:14.250: I/MediaPlayer(16799): Info (701,0)
or
03-02 18:03:33.906: W/MediaPlayer(16799): info/warning (703, 126) <br>
03-02 18:03:33.906: I/MediaPlayer(16799): Info (703,126)
Any ideas on that?
Edit:
Ahh. One more information. 701 means MEDIA_INFO_BUFFERING_START and 702 means MEDIA_INFO_BUFFERING_END.
I think I could fix these if I increase buffer size?
Edit: But wait. BufferingSize is baked into the system. Damned. :)

As you wrote, buffering...
Sorry, No other suggestions.

It is buffering as you wrote - the only thing I'd like to add is that while it's annoying that it stops or starts, this information is very useful to your user. You may want to update him with a Toast (or a Crouton!) or indicate some sort of buffering status so that they don't blame your app (they will anyway usually!) or so that they know that it's likely their connection to blame - connecting to WIFI in this case is an action that would help.

I'm was seeing the same problem, but it only occurred when using a particular Bluetooth headset and the screen on my phone was off. The app that it occurred in was Just Playlists, a music player that I developed and support.
It only occurred when streaming via Wi-Fi and not via the cell network. I was able to get around the problem by going under Android's advanced Wi-Fi settings and disabling the "Wi-Fi optimization" option, which claims to "minimize battery usage when Wi-Fi is on." I had already used the advanced options to keep Wi-Fi always on.
The headset brand and model are Phiaton PS 210 BTNC. They support Bluetooth 3.0, which makes me suspect this is part of the issue. I've had this problem both under Android 4.1.x and 4.2.2. Here is a log excerpt from when the problem occurs and then recovers:
I/AwesomePlayer( 131): cache is running low (1.90 secs) , pausing.
W/MediaPlayer( 3028): info/warning (703, 0)
W/MediaPlayer( 3028): info/warning (701, 0)
I/MediaPlayer( 3028): Info (703,0)
I/MediaPlayer( 3028): Info (701,0)
I/audio_a2dp_hw( 131): suspend_audio_datapath: state 1
E/bt-btif ( 889): bta_av_str_stopped:audio_open_cnt=1, p_data 586a58f8
W/bt-btif ( 889): bta_dm_rm_cback:1, status:6
W/bt-btif ( 889): bta_dm_rm_cback:1, status:6
I/BluetoothA2dpServiceJni( 889): bta2dp_audio_state_callback
I/audio_a2dp_hw( 131): skt_disconnect: fd 46
D/A2dpStateMachine( 889): Connected process message: 101
D/A2dpStateMachine( 889): A2DP Playing state : device: 00:18:09:06:08:0C State:10->11
I/AwesomePlayer( 131): cache has filled up (6.00 secs), resuming.
I've yet to see what the impact on battery usage is after disabling the Wi-Fi optimization.