HttpUserAgent.java

package org.wheelmap.android.modules;

import com.google.inject.Inject;
import com.google.inject.Provider;

import android.app.Application;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager.NameNotFoundException;

class HttpUserAgent implements IHttpUserAgent {

    private Application application;

    @Inject
    HttpUserAgent(Provider<Application> applicationProvider) {
        this.application = applicationProvider.get();
    }

    @Override
    public String getAppUserAgent() {
        PackageInfo pInfo;
        try {
            pInfo = application.getPackageManager().getPackageInfo(application.getPackageName(), 0);
        } catch (NameNotFoundException e) {
            pInfo = null;
            e.printStackTrace();
        }
        ;
        final StringBuilder sb = new StringBuilder(application.getPackageName());
        if (pInfo != null) {
            sb.append("/");
            sb.append(pInfo.versionName);
        }
        return sb.toString();
    }
}