org.lunci.lunci_waveform_fragments.Fragment_ServiceManagerBase.java Source code

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Here is the source code for org.lunci.lunci_waveform_fragments.Fragment_ServiceManagerBase.java

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/*
 *  Copyright (C) 2015 Lunci Hua
 *  *
 *  * Licensed under the Apache License, Version 2.0 (the "License");
 *  * you may not use this file except in compliance with the License.
 *  * You may obtain a copy of the License at
 *  *
 *  *     http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS,
 *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  * See the License for the specific language governing permissions and
 *  * limitations under the License.
 */

package org.lunci.lunci_waveform_fragments;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.MenuItem;

import org.lunci.lunci_waveform_example.BuildConfig;
import org.lunci.lunci_waveform_service.DataService;
import org.lunci.lunci_waveform_service.DataService.IDataService;

public abstract class Fragment_ServiceManagerBase extends Fragment implements ServiceConnection {
    private static final String TAG = Fragment_ServiceManagerBase.class.getSimpleName();

    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
        mServiceFunction = (IDataService) service;
        mServiceMessenger = new Messenger(mServiceFunction.getMessengerBinder());
        mBound = true;
        if (BuildConfig.DEBUG) {
            Log.i(TAG, "onServiceConnected, id=" + mServiceKey);
        }
    }

    @Override
    public void onServiceDisconnected(ComponentName name) {
        mServiceFunction = null;
        mServiceMessenger = null;
    }

    private Messenger mServiceMessenger;
    private IDataService mServiceFunction;
    private int mServiceKey;
    private boolean mBound = false;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    protected boolean sendMessageToService(Message msg) {
        if (mServiceMessenger == null)
            return false;
        msg.replyTo = mServiceMessenger;
        if (msg.arg1 != 0)
            Log.e(TAG, "Message argument 1 is reserved for service assigned id. Do not use argument 1.");
        msg.arg1 = mServiceKey;
        try {
            mServiceMessenger.send(msg);
        } catch (RemoteException e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        if (!mBound) {
            Intent intent = new Intent(activity, DataService.class);
            activity.getApplicationContext().bindService(intent, this, Context.BIND_AUTO_CREATE);
        }
    }

    @Override
    public void onDetach() {
        if (mBound) {
            getActivity().getApplicationContext().unbindService(this);
            mBound = false;
        }
        super.onDetach();
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (!super.onOptionsItemSelected(item)) {
            return getActivity().onOptionsItemSelected(item);
        } else
            return true;
    }

    public IDataService getServiceFunction() {
        return mServiceFunction;
    }
}