mytaskmanager | Open source application for managing running apps | Runtime Evironment library

I have a .NET Core 2.1 project that has a BackgroundService and I want its responsibility to just handle logging the result from a group of different tasks that can return different values. I want to group all of their output into a Task Manager class to log their output. Is it possible to have one List that will contain all the Task objects from these async methods?

I don't want to have multiple Task fields for each method I want to await on. I'd rather have them be put into a List of some sort because there could be the possibility to have more than these three async methods I want this manager to manage.

I was thinking of doing something like:

I am using URLSession in my iOS project. (Swift 4). The following code is only for illustration purpose.

How to use notify and wait properly. I have just two threads to test my logic. Is it as follows i create one thread which will execute a command of the type get file_1 file_2 and create file3 with the type cmd. My first task don't have file_2 so it will be put in wait state on a condition predicate that checks if the both files are present with .exists() method on the file. The second thread will create file_2 and it will notify the first thread then the other thread will wake up and execute his job. The problem is that after the thread that is waiting wakes up it doesn't have his job but the other's thread job. For example if Thread-1 have to execute file1 file2 > file3 and it is in a wait state. And Thread-2 have to execute file3 file4 > file2 so it creates the file2 and notify Thread-1. After Thread-1 woke up it have file3 fil4 > file2 and not his files. I am dumping everything to the console and when the two threads are taking the tasks from the commands file they take the proper one's they don't have the same task but after Thread-1 woke up it have the Thread-2 task. Can someone help me to understand how to use wait and notify for this case and in any other of course. I have read Java Concurrency in practice but they have only put and take methods there with wait and notify also the examples in google are naive and they work as expected. Thanks in advance.

I have a taskList object "holder" that contains a list of "task" objects. In a loop i read commands from a text file and on each line i add new task object with a command and add it into the "holder" object. The commands are of the form "cat source_file1 source_file2 output_file", if one of the files are missing i want the thread to wait, and proceed further with the new commands. I am trying to use a condition queue with the following predicate (if both files for the command exists wake up and do the work) until then sleep. I am using two threads for testing purpose when the first thread enters the wait state the program hangs forever and it not gives a chance to the other threads to produce the file that is missed for the waited thread.

I'm new to Android and I'm building small app in order to get the basics. I'm facing a dumb issue which, apparently, I can't seem to be able to fix.

I'm building a screen that looks like this on the designer

However, when starting the emulator, the design looks like this:

Can you please advice me what I'm doing wrong? My xml file is as follows: