# WOWZA player not working android app **URL:** \ **Category:** Wowza GoCoder SDK\ **Created:** [July 17, 2018, 5:21pm UTC](https://community.wowza.com/t/wowza-player-not-working-android-app/51625 "2018-07-17T17:21:56Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Nishchay\_Pagarani](https://avatars.discourse-cdn.com/v4/letter/n/85e7bf/32.png) [@Nishchay\_Pagarani](https://community.wowza.com/u/Nishchay_Pagarani)\ **Post date:** [July 17, 2018, 5:21pm UTC](https://community.wowza.com/t/wowza-player-not-working-android-app/51625/1 "2018-07-17T17:21:56Z")
I made a basic wowza player using the instructions given here : [https://www.wowza.com/docs/how-to-play-a-live-stream-with-wowza-gocoder-sdk-for-android](https://www.wowza.com/docs/how-to-play-a-live-stream-with-wowza-gocoder-sdk-for-android) Note : the streaming part is working and is visible on the wowza streaming cloud website. The connection settings are done as shown here : [https://www.wowza.com/docs/how-to-connect-to-wowza-streaming-cloud-with-gocoder-sdk-for-android](https://www.wowza.com/docs/how-to-connect-to-wowza-streaming-cloud-with-gocoder-sdk-for-android) I am using wowza cloud streaming as the server however I get the following error : FATAL EXCEPTION: main Process: trial.drone.streamer, PID: 8450 java.lang.RuntimeException: Unable to start activity ComponentInfo{trial.drone.streamer/trial.drone.streamer.Player}: java.lang.RuntimeException: Invalid surface: null at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2455) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2515) at android.app.ActivityThread.access$1000(ActivityThread.java:154) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1379) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:157) at android.app.ActivityThread.main(ActivityThread.java:5571) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635) Caused by: java.lang.RuntimeException: Invalid surface: null at com.wowza.gocoder.sdk.api.gles.EglCore.createWindowSurface(GoCoderSDK:225) at com.wowza.gocoder.sdk.api.gles.EglSurfaceBase.createWindowSurface(GoCoderSDK:58) at com.wowza.gocoder.sdk.api.gles.WindowSurface.(GoCoderSDK:39) at com.wowza.gocoder.sdk.api.player.WOWZPlayerView.clear(GoCoderSDK:545) at com.wowza.gocoder.sdk.api.player.WOWZPlayerView.a(GoCoderSDK:826) at com.wowza.gocoder.sdk.api.player.WOWZPlayerView.play(GoCoderSDK:900) at trial.drone.streamer.Player.onCreate(Player.java:41) at android.app.Activity.performCreate(Activity.java:6357) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2408) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2515) at android.app.ActivityThread.access$1000(ActivityThread.java:154) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1379) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:157) at android.app.ActivityThread.main(ActivityThread.java:5571) This is the code I am using : ```auto private WOWZPlayerView mStreamPlayerView; private WOWZPlayerConfig mStreamPlayerConfig;
private WowzaGoCoder goCoder;@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_player);
goCoder = WowzaGoCoder.init(getApplicationContext(), "license_key");
mStreamPlayerView = (WOWZPlayerView) findViewById(R.id.vwStreamPlayer);
mStreamPlayerConfig = new WOWZPlayerConfig();
mStreamPlayerConfig.setIsPlayback(true);
mStreamPlayerConfig.setHostAddress("host_address");
mStreamPlayerConfig.setApplicationName("app-xxxx");
mStreamPlayerConfig.setStreamName("stream_name");
mStreamPlayerConfig.setPortNumber(1935);
mStreamPlayerConfig.setAudioEnabled(true);
mStreamPlayerConfig.setVideoEnabled(true);
mStreamPlayerView.setScaleMode(WOWZMediaConfig.FILL_VIEW);
WOWZStatusCallback statusCallback = new StatusCallback();
mStreamPlayerView.play(mStreamPlayerConfig, statusCallback);}

class StatusCallback implements WOWZStatusCallback{
@Override
public void onWZStatus(WOWZStatus wzStatus) {
}
@Override
public void onWZError(WOWZStatus wzStatus) {
}
} ``` ---
**Author:** ![Vasily\_Enot](https://avatars.discourse-cdn.com/v4/letter/v/4491bb/32.png) [@Vasily\_Enot](https://community.wowza.com/u/Vasily_Enot)\ **Post date:** [July 30, 2018, 8:41pm UTC](https://community.wowza.com/t/wowza-player-not-working-android-app/51625/2 "2018-07-30T20:41:10Z")
Same here. Have you found any solution? ---
**Author:** ![Dinabandhu\_Mondal](https://avatars.discourse-cdn.com/v4/letter/d/5f9b8f/32.png) [@Dinabandhu\_Mondal](https://community.wowza.com/u/Dinabandhu_Mondal)\ **Post date:** [August 22, 2018, 3:49pm UTC](https://community.wowza.com/t/wowza-player-not-working-android-app/51625/3 "2018-08-22T15:49:32Z")
Hi, I have found some solution for the problem as follows. Step 1: First initialise the GoCoder inside onCreate(). WowzaGoCoder goCoder = WowzaGoCoder.init(getApplicationContext(), “GOXX-XXXX- XXXX-XXXX-XXXX-XXA7”); Step 2: Maintain some delay between Wowza player configuration and ‘play’ method of Wowza player view. ```auto mStreamPlayerConfig = new WOWZPlayerConfig(); mStreamPlayerConfig.setIsPlayback(true); mStreamPlayerConfig.setHostAddress("your-server-ip"); mStreamPlayerConfig.setApplicationName("live"); mStreamPlayerConfig.setStreamName("myStream"); mStreamPlayerConfig.setPortNumber(1935);

new Handler().postDelayed(new Runnable() { @Override public void run() { mStreamPlayerView.play(mStreamPlayerConfig, this/*WOWZStatusCallback*/); } }, 1000); ``` ---
**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\ **Post date:** [August 22, 2018, 3:19pm UTC](https://community.wowza.com/t/wowza-player-not-working-android-app/51625/4 "2018-08-22T15:19:19Z")
Hello @Nishchay Pagarani I’m sorry you are facing this issue and thanks for sharing the error message. Can you please submit a support ticket so we can assist you with this? You can do this here: > **[Open a Support Ticket | Wowza Media Systems](https://www.wowza.com/support/open-ticket)** > > Wowza technical support engineers worldwide help you succeed with your Wowza Streaming Engine™ software or the Wowza Streaming Cloud™ service. ---
**Author:** ![satyajit\_patil](https://avatars.discourse-cdn.com/v4/letter/s/fbc32d/32.png) [@satyajit\_patil](https://community.wowza.com/u/satyajit_patil)\ **Post date:** [October 9, 2018, 9:41am UTC](https://community.wowza.com/t/wowza-player-not-working-android-app/51625/5 "2018-10-09T09:41:27Z")
HI I am also facing the same issue. Please let me know if you have found any solution for it. Thanks in advance ---
**Author:** ![Jason\_Tuchler](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/jason_tuchler/32/462_2.png) [@Jason\_Tuchler](https://community.wowza.com/u/Jason_Tuchler)\ **Post date:** [October 11, 2018, 12:47am UTC](https://community.wowza.com/t/wowza-player-not-working-android-app/51625/6 "2018-10-11T00:47:34Z")
Hello, Please make sure that your run method to create the delay looks like this: ```auto final Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { *WOWZStatusCallback statusCallback = new StatusCallback();* *mStreamPlayerView.play(mStreamPlayerConfig, statusCallback);* *}* *}, 1000);* *}* *}* ``` Regards, Jason