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Problem with start/bind service (Plugin)

Discussion in 'Android' started by Fragfire, Aug 14, 2015.

  1. Fragfire

    Fragfire

    Joined:
    Apr 15, 2014
    Posts:
    9
    Hey folks,

    I have an issue that I couldn't solve in the last two days (I tried various suggestions found with google...), so I hope you guys can help me with that :)

    I'm trying to implement a service which is started by Unity when a button is pushed. If the button is pushed again the service shall stop. Since I need to communicate (tracking steps of the user, but only call amount when needed for further computation) I wanted to use the bindService() function, so I have easy access to the service.

    What I tried to accomplish that (I will post the customized AndroidManifest as I used it):
    At first I created a new Activity "TActivity" which extends the UnityPlayerActivity with two test method getInt (static) and getFixedInt(non-static)
    Code (CSharp):
    1. package com.tracker;
    2.  
    3. import android.app.Activity;
    4. import android.content.ComponentName;
    5. import android.content.Context;
    6. import android.content.Intent;
    7. import android.content.ServiceConnection;
    8. import android.os.Bundle;
    9. import android.os.IBinder;
    10. import android.util.Log;
    11.  
    12. import com.unity3d.player.UnityPlayer;
    13. import com.unity3d.player.UnityPlayerActivity;
    14.  
    15. public class TActivity extends UnityPlayerActivity {
    16.  
    17.     private TService mBoundService;
    18.     private boolean mServiceBound = false;
    19.  
    20.     public static Context sContext;
    21.  
    22.     private ServiceConnection mServiceConnection = new ServiceConnection() {
    23.         @Override
    24.         public void onServiceConnected(ComponentName componentName, IBinder service) {
    25.             TService.MyBinder myBinder = (TService.MyBinder) service;
    26.             mBoundService = myBinder.getService();
    27.             mServiceBound = true;
    28.             Log.d("Unity", "Service connected");
    29.         }
    30.  
    31.         @Override
    32.         public void onServiceDisconnected(ComponentName componentName) {
    33.             mBoundService = null;
    34.             mServiceBound = false;
    35.         }
    36.     };
    37.  
    38.     @Override
    39.     protected void onCreate(Bundle bundle) {
    40.         super.onCreate(bundle);
    41.         sContext = this;
    42.     }
    43.  
    44.     public void startTracking() {
    45.         Intent intent = new Intent(this, TService.class);
    46.         bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);
    47.         Log.d("Unity", "Service bound");
    48.     }
    49.  
    50.     public int getPowerValue() {
    51.         return mBoundService.getPower();
    52.     }
    53.  
    54.     public void getPower() {
    55.         UnityPlayer.UnitySendMessage("Canvas", "ReceivePowerInfo", String.valueOf(mBoundService.getPower()));
    56.     }
    57.  
    58.     public static int getInt() {
    59.         return 123;
    60.     }
    61.  
    62.     public int getFixedInt() {
    63.         return 999;
    64.     }
    65.  
    66.     public void stopTracking() {
    67.         if (mServiceBound) {
    68.             unbindService(mServiceConnection);
    69.             mServiceBound = false;
    70.         }
    71.     }
    72. }

    Here I got the first problem: The onCreate-Method is never called at all -> sContext will not be set and I get NullPtr exception via logcat when I use the following code:

    Code (CSharp):
    1. <?xml version="1.0" encoding="utf-8"?>
    2. <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.tracker" android:versionName="1.0" android:versionCode="1" android:installLocation="preferExternal">
    3.   <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
    4.   <application android:theme="@android:style/Theme.NoTitleBar.Fullscreen" android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="false" android:isGame="true" android:banner="@drawable/app_banner">
    5.  
    6.     <activity android:name="com.tracker.TActivity" android:label="@string/app_name" android:screenOrientation="reverseLandscape" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale">
    7.       <intent-filter>
    8.         <action android:name="android.intent.action.MAIN" />
    9.         <category android:name="android.intent.category.LAUNCHER" />
    10.         <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
    11.       </intent-filter>
    12.       <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
    13.     </activity>
    14.  
    15.     <service
    16.       android:name="com.tracker.TService"
    17.       android:enabled="true"
    18.       android:exported="true">
    19.     </service>
    20.  
    21.   </application>
    22.  
    23.   <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="22" />
    24.   <uses-feature android:glEsVersion="0x00020000" />
    25.   <uses-permission android:name="android.permission.INTERNET" />
    26.   <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    27.   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    28.   <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
    29.   <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
    30.   <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
    31. </manifest>
    Code (CSharp):
    1. var javaClass = new AndroidJavaClass("com.tracker.TActivity");
    2. Debug.Log(javaClass.CallStatic<int>("getInt"));  // works perfectly fine
    3.  
    4. var activity = javaClass.GetStatic<AndroidJavaObject>("sContext");  // NullPtr exception in Android (logcat)
    5. Debug.Log(activity.Call<int>("getFixedInt"));  // not called at all
    Then I tried to use the UnityPlayer class:

    Code (CSharp):
    1. var javaClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
    2. Debug.Log(javaClass.CallStatic<int>("getInt"));  // Method not found exception
    3.  
    4. var activity = javaClass.GetStatic<AndroidJavaObject>("currentActivity");  // No NullPtr exception :)
    5. Debug.Log(activity.Call<int>("getFixedInt"));  // Method not found exception
    Finally I tried a mixture of both:

    Code (CSharp):
    1. var javaClass = new AndroidJavaClass("com.tracker.UnityPlayer");
    2. Debug.Log(javaClass.CallStatic<int>("getInt"));  // Perfectly fine
    3.  
    4. var activity = javaClass.GetStatic<AndroidJavaObject>("currentActivity");  // Field not found exception
    5. Debug.Log(activity.Call<int>("getFixedInt"));  // Method not called
    Since all of that failed I thought "fine... you don't really need to extend the base class, just use a bridge :rolleyes:". So I changed my Code to a more or less static variant (w/o the int test methods due to the absence of an object):
    Code (CSharp):
    1. package com.tracker;
    2.  
    3. import android.app.Activity;
    4. import android.content.ComponentName;
    5. import android.content.Context;
    6. import android.content.Intent;
    7. import android.content.ServiceConnection;
    8. import android.os.Bundle;
    9. import android.os.IBinder;
    10. import android.util.Log;
    11.  
    12. import com.unity3d.player.UnityPlayer;
    13. import com.unity3d.player.UnityPlayerActivity;
    14.  
    15. public class TActivity {
    16.  
    17.     private static TService mBoundService;
    18.     private static boolean mServiceBound = false;
    19.  
    20.     private static ServiceConnection mServiceConnection = new ServiceConnection() {
    21.         @Override
    22.         public void onServiceConnected(ComponentName componentName, IBinder service) {
    23.             TService.MyBinder myBinder = (TService.MyBinder) service;
    24.             mBoundService = myBinder.getService();
    25.             mServiceBound = true;
    26.             Log.d("Unity", "Service connected: " + mBoundService);
    27.         }
    28.  
    29.         @Override
    30.         public void onServiceDisconnected(ComponentName componentName) {
    31.             mBoundService = null;
    32.             mServiceBound = false;
    33.         }
    34.     };
    35.  
    36.     public static void startTracking(Activity unity) {
    37.         Intent intent = new Intent(unity, TService.class);
    38.         unity.bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);
    39.     }
    40.  
    41.     public static int getPowerValue() {
    42.         return mBoundService.getPower();
    43.     }
    44.  
    45.     public static void getPower() {
    46.         UnityPlayer.UnitySendMessage("Canvas", "ReceivePowerInfo", String.valueOf(mBoundService.getPower()));
    47.     }
    48.  
    49.     public static void stopTracking(Activity unity) {
    50.         if (mServiceBound) {
    51.             unity.unbindService(mServiceConnection);
    52.             mServiceBound = false;
    53.         }
    54.     }
    55. }

    So far so good. To bind the service to unity I now need the activity. Easy going since it's already provided:

    Code (CSharp):
    1. <?xml version="1.0" encoding="utf-8"?>
    2. <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.tracker" android:versionName="1.0" android:versionCode="1" android:installLocation="preferExternal">
    3.   <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
    4.   <application android:theme="@android:style/Theme.NoTitleBar.Fullscreen" android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="false" android:isGame="true" android:banner="@drawable/app_banner">
    5.  
    6.     <activity android:name="com.unity3d.player.UnityPlayerActivity" android:label="@string/app_name" android:screenOrientation="reverseLandscape" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale">
    7.       <intent-filter>
    8.         <action android:name="android.intent.action.MAIN" />
    9.         <category android:name="android.intent.category.LAUNCHER" />
    10.         <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
    11.       </intent-filter>
    12.       <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
    13.     </activity>
    14.  
    15.     <service
    16.       android:name="com.tracker.TService"
    17.       android:enabled="true"
    18.       android:exported="true">
    19.     </service>
    20.  
    21.   </application>
    22.  
    23.   <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="22" />
    24.   <uses-feature android:glEsVersion="0x00020000" />
    25.   <uses-permission android:name="android.permission.INTERNET" />
    26.   <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    27.   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    28.   <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
    29.   <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
    30.   <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
    31. </manifest>
    Code (CSharp):
    1. var javaClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
    2. var activity = javaClass.GetStatic<AndroidJavaObject>("currentActivity");  // Unity Activity
    3.  
    4. var bridge = new AndroidJavaClass("com.tracker.TActivity");  // My bridge class
    5. bridge.CallStatic("startTracking", activity);  // Is called!
    At this point the second problem arrived. Now when I finally want to bind the service to the Unity Activity I get:
    Normally I would say "alright, I messed something up with the paths. Let's recheck them all and try again." But I can't find the problem here... (TActivity and TService are in the same package, provided via .jar file in Assets/Plugins/Android -> here lies the AndroidManifest too). After that I tried it with startService(intent), but that throws the same error. Maybe someone of you has any ideas?

    Help is much appreciated! :p
    Thanks
     
  2. Fragfire

    Fragfire

    Joined:
    Apr 15, 2014
    Posts:
    9
    Hey,

    I finally solved one of my problems :) My stuff wasn't in the "Assets/Plugins/Android" folder, but in the "Assets/Assets/Plugins/Android" folder :oops:

    Now I Unity finds my Service class and onCreate is called! What still does not work is the "currentActivity", but I'm fine with my own static:
    Code (CSharp):
    1. javaClass = new AndroidJavaClass("com.tracker.TActivity");
    2. //activity = javaClass.GetStatic<AndroidJavaObject>("currentActivity");  <- this still throws FieldNotFound
    3. activity = javaClass.GetStatic<AndroidJavaObject>("sContext"); // this one works now
    I post my current working Acitivity class and AndroidManifest in case someone has similar porblems :)
    Code (CSharp):
    1. package com.tracker;
    2.  
    3. import android.content.ComponentName;
    4. import android.content.Context;
    5. import android.content.Intent;
    6. import android.content.ServiceConnection;
    7. import android.os.Bundle;
    8. import android.os.IBinder;
    9. import android.util.Log;
    10.  
    11. import com.unity3d.player.UnityPlayerActivity;
    12.  
    13. public class TActivity extends UnityPlayerActivity {
    14.  
    15.     private TService mBoundService;
    16.     private boolean mServiceBound = false;
    17.  
    18.     public static Context sContext;
    19.  
    20.     private ServiceConnection mServiceConnection = new ServiceConnection() {
    21.         @Override
    22.         public void onServiceConnected(ComponentName componentName, IBinder service) {
    23.             TService.MyBinder myBinder = (TService.MyBinder) service;
    24.             mBoundService = myBinder.getService();
    25.             mServiceBound = true;
    26.             Log.d("Unity", "Service connected: " + mBoundService);
    27.         }
    28.  
    29.         @Override
    30.         public void onServiceDisconnected(ComponentName componentName) {
    31.             mServiceBound = false;
    32.         }
    33.     };
    34.  
    35.     @Override
    36.     protected void onCreate(Bundle bundle) {
    37.         super.onCreate(bundle);
    38.         sContext = this;
    39.     }
    40.  
    41.     public void startTracking() {
    42.         Intent intent = new Intent(this, TService.class);
    43.         bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);
    44.     }
    45.  
    46.     public int getPowerValue() {
    47.         return mBoundService.getPower();
    48.     }
    49.  
    50.     public void stopTracking() {
    51.         if (mServiceBound) {
    52.             unbindService(mServiceConnection);
    53.             mServiceBound = false;
    54.         }
    55.     }
    56. }
    Code (CSharp):
    1. <?xml version="1.0" encoding="utf-8"?>
    2. <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.tracker" android:versionName="1.0" android:versionCode="1" android:installLocation="preferExternal">
    3.   <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
    4.   <application android:theme="@android:style/Theme.NoTitleBar.Fullscreen" android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="false" android:isGame="true" android:banner="@drawable/app_banner">
    5.  
    6.     <activity android:name="com.tracker.TActivity" android:label="@string/app_name" android:screenOrientation="reverseLandscape" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale">
    7.       <intent-filter>
    8.         <action android:name="android.intent.action.MAIN" />
    9.         <category android:name="android.intent.category.LAUNCHER" />
    10.         <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
    11.       </intent-filter>
    12.       <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
    13.     </activity>
    14.  
    15.     <service
    16.       android:name="com.tracker.TService"
    17.       android:enabled="true"
    18.       android:exported="true">
    19.     </service>
    20.  
    21.   </application>
    22.  
    23.   <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="22" />
    24.   <uses-feature android:glEsVersion="0x00020000" />
    25.   <uses-permission android:name="android.permission.INTERNET" />
    26.   <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    27.   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    28.   <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
    29.   <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
    30.   <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
    31. </manifest>

    Greetings