「呐,你知道吗? 听说樱花飘落的速度是秒速五厘米哦。」
听到阿珍又念起这句经典台词,阿强,这个对自然界的花期不太敏感的程序员,也收到了“樱花开了”的讯号。
春天的樱花不能错过,赏樱是写进阿珍价值观的春日打卡动作。视频通话里,阿珍计划了一场远行——周末就回母校武大看樱花。但这一次,在外出差的阿强不能陪她一起去。
于是阿强,依然是拿出了自己吃饭的本事,将自己的周到关怀写进一个智能旅游管家APP,陪阿珍去武汉看樱花。即使不在身边,也要给她无微不至的出游体验:
- 出发行程不用记:出发前为她提醒出行时间,让她不再错过重要行程;
- 目的地天气早知道:根据目的地气象预报,提前给到出游装备和穿搭建议;
- 攻略玩法全推荐:让她省去做攻略的时间,抵达目的地,推送所需的游玩攻略和优惠政策……
以上管家式智能出行服务能力,有了华为情景感知服务(Awareness kit)的时间感知和天气感知能力、定位服务(Location Kit)的地理围栏能力,以及推送服务(Push kit)的加持,实现起来并不难。
效果示例
点击视频查看示例
原理解释
情景感知服务能感知用户当前的时间、位置、活动状态、耳机状态、天气状况、环境光、车载连接状态、信标连接状态等场景,并通过能常驻后台运行的围栏能力,并且可自由组合这些感知能力,建立组合围栏。
定位服务采用GNSS、Wi-Fi、基站等多途径的混合定位模式进行定位,能快速、精准获取位置信息,实现全球定位服务能力。
推送服务是华为为开发者提供的消息推送平台,建立了从云端到终端的消息推送通道。开发者通过集成Push Kit可以实时推送消息到用户终端。
代码实战
1、集成情景感知服务
开发准备
情景感知服务的集成需如下3个关键步骤,可以参考华为开发者联盟的文档
1. AppGallery Connect配置
2.集成HMS Awareness SDK
3.配置混淆脚本
代码开发关键步骤
1、在Manifest指定权限:
-
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
-
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
2. 实现通过城市名获取天气信息:
-
String city = edCity.getText().toString();
-
if (city !=
null && !city.equals(
"")) {
-
WeatherPosition weatherPosition =
new WeatherPosition();
-
weatherPosition.setCity(city);
-
//传入指明传入地址用的语言类型,例如“zh_CN”、“en_US”等,“语言码_国家码”的格式。
-
weatherPosition.setLocale(
"zh_CN");
-
// 获取Awareness Kit的“Capture Client”,调用天气查询能力
-
Awareness.getCaptureClient(getApplicationContext()).getWeatherByPosition(weatherPosition)
-
.addOnSuccessListener(
new OnSuccessListener<WeatherStatusResponse>() {
-
@Override
-
public
void onSuccess(WeatherStatusResponse weatherStatusResponse) {
-
// 处理返回的天气数据
-
WeatherStatus weatherStatus = weatherStatusResponse.getWeatherStatus();
-
WeatherSituation weatherSituation = weatherStatus.getWeatherSituation();
-
Situation situation = weatherSituation.getSituation();
-
String weather;
-
// 将天气id与天气名称匹配
-
weather = getApplicationContext().getResources().getStringArray(R.
array.cnWeather)[situation.getCnWeatherId()];
-
// 更新UI
-
((TextView) findViewById(R.id.tv_weather)).setText(weather);
-
((TextView) findViewById(R.id.tv_windDir)).setText(situation.getWindDir());
-
((TextView) findViewById(R.id.tv_windSpeed)).setText(situation.getWindSpeed() +
" km/h");
-
((TextView) findViewById(R.id.tv_temperature)).setText(situation.getTemperatureC() +
"℃");
-
}
-
}).addOnFailureListener(
new OnFailureListener() {
-
@Override
-
public
void onFailure(
Exception e) {
-
-
}
-
});
-
}
3. 实现定时提醒和进入目的地后,接受到推送的消息:
(1) 因为需要在应用被杀死时也能接受通知,需要注册静态广播:
在Manifest中:
-
<receiver android:name=".BarrierReceiver">
-
<intent-filter>
-
<action android:name="com.test.awarenessdemo.TimeBarrierReceiver.BARRIER_RECEIVER_ACTION"/>
-
</intent-filter>
-
</receiver>
在java代码中:
-
Intent intent =
new Intent();
-
intent.setComponent(
new ComponentName(MainActivity.
this, BarrierReceiver.
class));
-
mPendingIntent = PendingIntent.getBroadcast(
this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
(2) 定义时间Barrier(围栏)和其对应的标签Label,然后添加Barrier:
-
// 获取输入的时间
-
String timeHour = edTimeHour.getText().toString();
-
String timeMinute = edTimeMinute.getText().toString();
-
int hour =
0;
-
int minute =
0;
-
if (!timeHour.equals(
"")) {
-
hour =
Integer.parseInt(timeHour);
-
if (!timeMinute.equals(
"")) {
-
minute =
Integer.parseInt(timeMinute);
-
}
-
}
-
long oneHourMilliSecond =
60 *
60 *
1000L;
-
long oneMinuteMilliSecond =
60 *
1000L;
-
// 定义"duringPeriodOfDay"围栏,在指定时区的指定时间段内发送通知
-
AwarenessBarrier periodOfDayBarrier = TimeBarrier.duringPeriodOfDay(TimeZone.getDefault(),
-
// 这里设置的是提前2小时通知
-
(hour -
2) * oneHourMilliSecond + minute * oneMinuteMilliSecond,
-
hour * oneHourMilliSecond + minute * oneMinuteMilliSecond);
-
-
String timeBarrierLabel =
"period of day barrier laber";
-
// 定义更新围栏的请求
-
BarrierUpdateRequest.Builder builder =
new BarrierUpdateRequest.Builder();
-
BarrierUpdateRequest request = builder.addBarrier(timeBarrierLabel, periodOfDayBarrier, mPendingIntent).build();
-
Awareness.getBarrierClient(getApplicationContext()).updateBarriers(request)
-
.addOnSuccessListener(
new OnSuccessListener<
Void>() {
-
@Override
-
public
void onSuccess(
Void aVoid) {
-
}
-
})
-
.addOnFailureListener(
new OnFailureListener() {
-
@Override
-
public
void onFailure(
Exception e) {
-
}
-
});
(3) 定义地理Barrier(围栏)和其对应的标签Label,然后添加Barrier:
-
if (city !=
null && !city.equals(
"")) {
-
//根据城市名称获取城市经纬度,这里是从内部文件中获取
-
String data = cityMap.get(city);
-
if (data !=
null){
-
int flag = data.indexOf(
",");
-
double latitude =
Double.parseDouble(data.substring(flag+
1));
-
double longitude =
Double.parseDouble(data.substring(
0,flag));
-
double radius =
50;
-
long timeOfDuration =
5000;
-
// 定义"stay"围栏,在进入指定区域并驻留超过指定时间后触发围栏事件上报
-
AwarenessBarrier stayBarrier = LocationBarrier.stay(latitude, longitude, radius, timeOfDuration);
-
String stayBarrierLabel =
"stay barrier label";
-
// 定义更新围栏的请求
-
BarrierUpdateRequest.Builder builder =
new BarrierUpdateRequest.Builder();
-
BarrierUpdateRequest request = builder.addBarrier(stayBarrierLabel, stayBarrier, mPendingIntent).build();
-
Awareness.getBarrierClient(getApplicationContext()).updateBarriers(request)
-
.addOnSuccessListener(
new OnSuccessListener<
Void>() {
-
@Override
-
public
void onSuccess(
Void aVoid) {
-
}
-
})
-
.addOnFailureListener(
new OnFailureListener() {
-
@Override
-
public
void onFailure(
Exception e) {
-
}
-
});
-
}
-
}
(4) 定义广播接收器,用于监听Barrier事件,收到事件后进行应用的业务处理:
-
class BarrierReceiver extends BroadcastReceiver {
-
@Override
-
public
void onReceive(Context context, Intent intent) {
-
BarrierStatus barrierStatus = BarrierStatus.extract(intent);
-
String label = barrierStatus.getBarrierLabel();
-
int barrierPresentStatus = barrierStatus.getPresentStatus();
-
String city = intent.getStringExtra(
"city");
-
switch (label) {
-
case DURING_PERIOD_OF_DAT_BARRIER_LABEL:
-
if (barrierPresentStatus == BarrierStatus.
TRUE) {
-
-
initNotification(context,
"1",
"time_channel",
"行程提醒",
"离出发还剩2小时");
-
}
else
if (barrierPresentStatus == BarrierStatus.
FALSE) {
-
showToast(context,
"It's not between ");
-
}
else {
-
showToast(context,
"The time status is unknown.");
-
}
-
break;
-
-
case STAY_BARRIER_LABEL:
-
if (barrierPresentStatus == BarrierStatus.
TRUE) {
-
-
initNotification(context,
"2",
"area_channel",
"欢迎来到"+city,
"查看旅行攻略");
-
}
else
if (barrierPresentStatus == BarrierStatus.
FALSE) {
-
showToast(context,
"You are not staying in the area set by locationBarrier" +
-
" or the time of duration is not enough.");
-
}
else {
-
showToast(context,
"The location status is unknown.");
-
}
-
break;
-
}
-
}
-
}
2、基于位置的信息推送
开发准备
1. 在项目级gradle里添加华为maven仓
AndroidStudio项目级build.gradle文件,增量添加如下maven地址:
-
buildscript
{
-
repositories
{
-
maven
{ url 'http://developer.huawei.com/repo/'}
-
}
-
dependencies
{
-
...
-
//
增加agcp配置。
-
classpath
'com.huawei.agconnect:agcp:1.4.2.300'
-
}
-
}allprojects
{
-
repositories
{
-
maven
{ url 'http://developer.huawei.com/repo/'}
-
}
-
}
2. 在应用级的build.gradle里面加上SDK依赖
-
dependencies {
-
implementation
'com.huawei.hms:location:5.0.2.300'
-
implementation
'com.huawei.hms:push: 5.0.2.301'
-
}
关键步骤说明
1.在AndroidManifest.xml文件里面声明系统权限
因华为定位服务采用GNSS、Wi-Fi、基站等多种混合定位模式进行定位,需要用到网络,精确的位置权限,粗略的位置权限,如果需要应用程序在后台执行时也具备持续定位能力,需要在Manifest文件中申请ACCESS_BACKGROUND_LOCATION权限:
-
<uses-permission android:name="android.permission.INTERNET" />
-
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
-
<uses-permission android:name="android.permission.WAKE_LOCK" />
-
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
-
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
-
<uses-permission android:name="com.huawei.hms.permission.ACTIVITY_RECOGNITION" />
-
<uses-permission android:name="android.permission.ACTIVITY_RECOGNITION" />
注:由于ACCESS_FINE_LOCATION,WRITE_EXTERNAL_STORAGE和READ_EXTERNAL_STORAGE是危险的系统权限,因此,需要动态的申请这些权限。如果权限不足,Location Service将会拒绝为应用开启定位。
2. 创建触发围栏
先根据需要创建围栏\围栏组,填好相关参数。
-
LocationSettingsRequest.Builder builders =
new LocationSettingsRequest.Builder();
-
builders.addLocationRequest(mLocationRequest);
-
LocationSettingsRequest locationSettingsRequest = builders.build();
-
// Before requesting location update, invoke checkLocationSettings to check device settings.
-
Task<LocationSettingsResponse> locationSettingsResponseTasks = mSettingsClient.checkLocationSettings(locationSettingsRequest);
-
locationSettingsResponseTasks.addOnSuccessListener(
new OnSuccessListener<LocationSettingsResponse>() {
-
@Override
-
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
-
Log.i(TAG,
"check location settings success");
-
mFusedLocationProviderClient
-
.requestLocationUpdates(mLocationRequest, mLocationCallbacks, Looper.getMainLooper())
-
.addOnSuccessListener(
new OnSuccessListener<Void>() {
-
@Override
-
public void onSuccess(Void aVoid) {
-
LocationLog.i(TAG,
"geoFence onSuccess");
-
}
-
})
-
.addOnFailureListener(
new OnFailureListener() {
-
@Override
-
public void onFailure(Exception e) {
-
LocationLog.e(TAG,
-
"geoFence onFailure:" + e.getMessage());
-
}
-
});
-
}
-
})
3. 设置触发推送通知
在GeoFenceBroadcastReceiver的onReceive接收到围栏触发成功提示后发送推送通知,在通知栏接收通知并展示。
-
if (geofenceData !=
null) {
-
int errorCode = geofenceData.getErrorCode();
-
int conversion = geofenceData.getConversion();
-
ArrayList<Geofence>
list = (ArrayList<Geofence>) geofenceData.getConvertingGeofenceList();
-
Location myLocation = geofenceData.getConvertingLocation();
-
boolean status = geofenceData.isSuccess();
-
sb.append(
"errorcode: " + errorCode + next);
-
sb.append(
"conversion: " + conversion + next);
-
if (
list !=
null) {
-
for (
int i =
0; i <
list.size(); i++) {
-
sb.append(
"geoFence id :" +
list.get(i).getUniqueId() + next);
-
}
-
}
-
if (myLocation !=
null) {
-
sb.append(
"location is :" + myLocation.getLongitude() +
" " + myLocation.getLatitude() + next);
-
}
-
sb.append(
"is successful :" + status);
-
LocationLog.i(TAG, sb.toString());
-
Toast.makeText(context,
"" + sb.toString(), Toast.LENGTH_LONG).show();
-
//
-
new PushSendUtils().netSendMsg(sb.toString());
-
}
注:此代码围栏创建成功后会触发两次回调,conversion:1和4,分别代表进入触发回调和驻留触发回调一次。代码中输入的Trigger输入7的含义表示回调包括所有情况,即进入、驻留、离开等各种情况。
>>访问华为开发者联盟官网,了解更多相关内容
>>获取开发指导文档
关注我们,第一时间了解华为移动服务最新技术资讯~
转载:https://blog.csdn.net/HUAWEI_HMSCore/article/details/114700315