我正在使用Java在Android Studio中制作一个android应用，其功能是每天通过http请求获取我的工作时间表（我使用的是OkHttpClient）。
我对服务中的请求有疑问，当我发出由警报触发的请求时，我收到下一条消息=“连接超时”，并且该请求将不会启动。有趣的是，在具有API 21的Android中，请求可以正常工作，但是在具有API 24 Nugat的Android较新版本中，它不能正常工作，仅当我打开应用程序时，它才能工作设置我的闹钟的活动：
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 16);
calendar.set(Calendar.MINUTE, 52);
calendar.set(Calendar.SECOND, 0);
Intent intent = new Intent(getApplicationContext(), ScheduleReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
我的接收器中的代码：
Log.d("SCHEDULE-RECEIVER", "SCHEDULE");
Intent i = new Intent("schedules_update");
context.sendBroadcast(i);
为我服务：
public void onCreate() {
super.onCreate();
if(broadcastReceiverSchedules == null) {
broadcastReceiverSchedules = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.d("-->[SERVICE]", "Schedules");
getUserSchedule(context);
}
};
}
registerReceiver(broadcastReceiverSchedules, new IntentFilter("schedules_update"));
}
在方法调用getUserSchedule中，我从SQLite数据库获取用户ID，并将其发送到http请求方法：
public void getUserSchedule(Context context){
contextLocal = context;
ConnectionSQLiteHelper conn = new ConnectionSQLiteHelper(contextLocal, "cloe_users", null, 1);
SQLiteDatabase db = conn.getReadableDatabase();
String[] fields = {Utilities.TOKEN, Utilities.USER_ID};
try {
Cursor cursor = db.query(Utilities.TABLE_NAME, fields, Utilities.ID + "=?", new String[]{"1"}, null, null, null);
cursor.moveToFirst();
token = cursor.getString( cursor.getColumnIndex("token"));
user_id = cursor.getString( cursor.getColumnIndex("user_id"));
cursor.close();
if(user_id != "") {
HttpRequestSchedules httpRequestSchedules = new HttpRequestSchedules();
httpRequestSchedules.execute();
}
else
{
showErrorNotification("REG", "User couldn't be found");
}
} catch( Exception e) {
Log.d("[SQL SERVICE]", "Error: " + e.getMessage());
showErrorNotification("REG", "Error: " + e.getMessage());
}
}
我的httpRequest方法：
private class HttpRequestSchedules extends AsyncTask<String, Void, String> {
private boolean successRequest = false;
@Override
protected String doInBackground(String... strings) {
try {
Log.d("[SCHEDULES]", "Petición horarios");
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(URL_SERVER + "/api/users/"+ user_id + "/schedules")
.header("Authorization", "Bearer "+ token)
.build();
Response response = client.newCall(request).execute();
JSONObject dataObject = new JSONObject(response.body().string());
Log.d("Request schedule", dataObject.toString());
String data = dataObject.getString("data");
JSONArray jsonArray = new JSONArray(data);
if(jsonArray.length() > 0) {
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject hourMin = new JSONObject(jsonArray.getString(i));
String hour = hourMin.getString("hour");
String min = hourMin.getString("minute");
Boolean insertedCorrectly = setAlarm(hour, min, i);
if(insertedCorrectly) {
Log.d("[SCHEDULE] HOUR", hour);
Log.d("[SHEDULE] MIN", min);
}
else
{
Log.d("[SHEDULE] ALARM", "Alarm not setted");
}
}
}
successRequest = true;
return "Success: " + data;
} catch( Exception e) {
return e.getMessage();
}
}
@Override
protected void onPostExecute(String s) {
Log.d("[SCHEDULES] on Post", s);
}
}
我是Android和Java的初学者，我没有经验，也不知道自己做错了什么。
谢谢。