Hello,
I want to share an example Service in Android. The AIDL-file looks
like this:
package dom.da;
interface RNS {
int[] getRandomNumbers(int amount);
}
I created the RNS Interface and implemented it in RemoteService.java:
package dom.da;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
public class RemoteService extends Service {
// implement the interface
private static final RNS.Stub mBinder = new RNS.Stub(){
@Override
public int[] getRandomNumbers(int amount) throws
RemoteException {
if (amount < 0)
return null;
int[] rc = new int[amount];
for (;amount > 0; amount--)
rc[amount] = 0;
return rc;
}
};
// we only service one innterface, so return it
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
}
Now I try to start the service in RNS_Service.java:
package dom.da;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
public class RNS_Service extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Intent i = new Intent();
i.setClassName("dom.da", "RemoteService");
ComponentName compName = startService(i);
if (compName == null)
{
Log.e("RNS_Service", "startService() failed!");
}
}
}
My AndroidManifest is as follows:
<manifest
xmlns:android="http://schemas.android.com/apk/res/android";
package="dom.da"
android:versionCode="1"
android:versionName="1.0.0">
<application
android:icon="@drawable/icon"
android:label="@string/app_name">
<activity
android:name=".RNS_Service"
android:label="@string/app_name">
<intent-filter>
<action
android:name="android.intent.action.MAIN"/>
<category
android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<service android:name="RemoteService" android:exported="true"
android:enabled="true"/>
</application>
</manifest>
This looks like pretty basic stuff, but startService allways returns
null. Is the way I set the component
of the service correct as in i.setClassName("dom.da",
"RemoteService")? Any other errors?
All AIDL examples I find on the net are either too complicated or
written for an older version
of the SDK.
Thanks,
Martin
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