老人防走失小应用（利用百度地图接口）

我想实现一个功能

就是给老人手机里装一个应用。如果老人走失了，给他发送一条短信，比如发“12345”，老人手机会回发给你一条短信，是他的定位地址

当然硬是要给男朋友装那也没办法，有点贱贱的

下面是实现

添加权限，最后两条是读短信和发短信的权限

    <uses-permission android:name="android.permission.GET_ACCOUNTS" />    <uses-permission android:name="android.permission.USE_CREDENTIALS" />    <uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />    <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />    <uses-permission android:name="android.permission.READ_PHONE_STATE" />    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    <uses-permission android:name="android.permission.BROADCAST_STICKY" />    <uses-permission android:name="android.permission.WRITE_SETTINGS" />    <uses-permission android:name="android.permission.SEND_SMS" />    <uses-permission android:name="android.permission.RECEIVE_SMS" />

1.建一个BroadcastReceiver，监听短信

下面有个判断很奇怪，if(content.toString().equals("12345")||number.toString().equals("10010"))，为什么要加10010呢？

因为我只有一张SIM卡，给10010发短信人家会回我。。。然后我可以把地址发给他，然后他又会回我，然后我再发，死循环了，是不是好蠢，玩完就把代码改了

这里只是小测验

 Intent it=new Intent(context,SendMessageService.class);
            it.putExtra("number",number.toString());
            context.startService(it);

把号码传到service里，这个service是用来定位的，然后再发短信

public class MessageReceiver extends BroadcastReceiver {    public MessageReceiver() {    }    @Override    public void onReceive(Context context, Intent intent) {        // TODO: This method is called when the BroadcastReceiver is receiving        // an Intent broadcast.        //throw new UnsupportedOperationException("Not yet implemented");        StringBuilder number=new StringBuilder();        StringBuilder content=new StringBuilder();        Bundle bundle=intent.getExtras();//        Log.e("MessageReceiver","bundle2="+intent.getExtras().toString());        if(bundle!=null)        {            Log.e("SJJ","bundle="+bundle.size());            Object[] pdus=(Object[]) bundle.get("pdus");            SmsMessage[] smsMessages=new SmsMessage[pdus.length];            for(int i=0;i<pdus.length;i++)            {                smsMessages[i]=SmsMessage.createFromPdu((byte[]) pdus[i]);            }            number.append(smsMessages[0].getDisplayOriginatingAddress());            //number.append(" ");            //content.append(smsMessages[0].getDisplayMessageBody());            for(SmsMessage message:smsMessages)            {                //number.append(message.getDisplayOriginatingAddress());                //number.append(" ");                content.append(message.getDisplayMessageBody());            }        }        if(content.toString().equals("12345")||number.toString().equals("10010"))        {            Intent it=new Intent(context,SendMessageService.class);            it.putExtra("number",number.toString());            context.startService(it);        }        Log.e("SJJ","number="+number.toString()+"  content="+content.toString());    }}

2.建立个定位的Service

onReceiveLocation方法里获得location

content=location.getAddrStr();获得地址    

下面这个方法发送短信，才短短几行代码。。

void  sendMessage(String number,String content)
    {
        PendingIntent pi= PendingIntent.getService(SendMessageService.this,
                0, new Intent(), 0);
        smsMg.sendTextMessage(number, null, content,
                pi, null);
    }

    @Override    public void onStart(Intent intent, int startId) {        super.onStart(intent, startId);        if (intent != null) {//            final String action = intent.getAction();//            if (ACTION_FOO.equals(action)) {//                final String param1 = intent.getStringExtra(EXTRA_PARAM1);//                final String param2 = intent.getStringExtra(EXTRA_PARAM2);//                handleActionFoo(param1, param2);//            } else if (ACTION_BAZ.equals(action)) {//                final String param1 = intent.getStringExtra(EXTRA_PARAM1);//                final String param2 = intent.getStringExtra(EXTRA_PARAM2);//                handleActionBaz(param1, param2);//            }            number=intent.getStringExtra("number");            smsMg=SmsManager.getDefault();            mLocationClient = new LocationClient(getApplicationContext());     //声明LocationClient类            mLocationClient.registerLocationListener( myListener );    //注册监听函数            LocationClientOption option = new LocationClientOption();            option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);//设置定位模式            option.setCoorType("bd09ll");//返回的定位结果是百度经纬度,默认值gcj02            option.setScanSpan(5000);//设置发起定位请求的间隔时间为5000ms            option.setIsNeedAddress(true);//返回的定位结果包含地址信息            option.setNeedDeviceDirect(true);//返回的定位结果包含手机机头的方向            mLocationClient.setLocOption(option);            mLocationClient.start();            if (mLocationClient != null && mLocationClient.isStarted())            {                Log.e("SJJ", "mLocationClient.start();");                mLocationClient.requestLocation();            }            else                Log.e("SJJ", "locClient is null or not started");            Log.e("SJJ","service get number ="+number);        }    }    public class MyLocationListener implements BDLocationListener {        @Override        public void onReceiveLocation(BDLocation location) {            if (location == null)                return ;            StringBuffer sb = new StringBuffer(256);            sb.append("time : ");            sb.append(location.getTime());            sb.append("\nerror code : ");            sb.append(location.getLocType());            sb.append("\nlatitude : ");            sb.append(location.getLatitude());            sb.append("\nlontitude : ");            sb.append(location.getLongitude());            sb.append("\nradius : ");            sb.append(location.getRadius());            if (location.getLocType() == BDLocation.TypeGpsLocation){                sb.append("\nspeed : ");                sb.append(location.getSpeed());                sb.append("\nsatellite : ");                sb.append(location.getSatelliteNumber());            } else if (location.getLocType() == BDLocation.TypeNetWorkLocation){                sb.append("\naddr : ");                sb.append(location.getAddrStr());            }            content=location.getAddrStr();            Log.e("SJJ","service"+content);            sendMessage(number,content);            mLocationClient.stop();            SendMessageService.this.stopSelf();        }    }    void  sendMessage(String number,String content)    {        PendingIntent pi= PendingIntent.getService(SendMessageService.this,                0, new Intent(), 0);        smsMg.sendTextMessage(number, null, content,                pi, null);    }}

看下结果

先给10010发条短信，然后这个app就自动把地址回过去了。。。对，我在上海。。。

如果你要给男朋友装怎么办。。。不要写Activity啊，偷偷给他装，然后就有个service再默默的跑，连图标都没有。。。不行，这样太贱了