Initialize the current thread as a looper. This gives you a chance to create handlers that then reference this looper, before actually starting the loop. Be sure to call loop() after calling this method, and end it by calling quit().
This answer has nothing to do with the question, but the use of looper and the way people created the handler and looper in ALL the answers here are plain bad practice (some explanations are correct though), I have to post this:
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I will try to explain the purpose of looper class as simple as possible.With a normal thread of Java when the run method completes the execution we say the thread has done it's job and thread lives no longer after that.what if we want to execute more tasks throughout our program with that same thread which is not living anymore?Oh there is a problem now right? Yes because we want to execute more tasks but the thread in not alive anymore. It is where the Looper comes in to rescue us.Looper as the name suggests loops. Looper is nothing more than an infinite loop inside your thread. So, it keeps the thread alive for an infinite time until we explicitly calls quit() method. Calling quit() method on the infinitely alive thread will make the condition false in the infinite loop inside the thread thus, infinite loop will exit. so, the thread will die or will no longer be alive. And it's critical to call the quit() method on our Thread to which looper is attached otherwise they will be there in your system just like Zombies.So, for example if we want to create a background thread to do some multiple tasks over it. we will create a simple Java's thread and will use Looper class to prepare a looper and attach the prepared looper with that thread so that our thread can live as longer as we want them because we can always call quit() anytime whenever we want to terminate our thread. So our the looper will keep our thread alive thus we will be able to execute multiple tasks with the same thread and when we are done we will call quit() to terminate the thread.What if we want our Main thread or UI thread to display the results computed by the background thread or non-UI thread on some UI elements?for that purpose there comes in the concept of Handlers;via handlers we can do inter-process communication or say via handlers two threads can communicate with each other.So, the main thread will have an associated Handler and Background thread will communicate with Main Thread via that handler to get the task done of displaying the results computed by it on some UI elements on Main thread.I know I am explaining only theory here but try to understand the concept because understanding the concept in depth is very important. And I am posting a link below which will take you to a small video series about Looper, Handler and HandlerThread and I will highly recommend watching it and all these concepts will get cleared with examples there.
Long time Spark 40 and Control user but have just received my Airstep SPK. I made the mistake of not reading the documentation closely enough when ordering what I had hoped would be a plug and play solution to adding a looper.
Im new to scratch and am picking up a reloop spin. Ive been looking at the recommended apps like tablist.net for my android phone but it doesnt seem to work as apparently its made for an older version of android? And Tablebeats is ios right?
Each looper is associated with one thread. To create a new looper and associate it to the current thread, you must call Looper.prepare(). The loopers are stored in a static ThreadLocal in the Looper class. You can retrieve the Looper associated to the current thread by calling Looper.myLooper().
The handler no argument constructor calls Looper.myLooper() and retrieves the looper associated with the current thread. This may or may not be the thread you actually want the handler to be associated with.
Loopering wise you have also the L7 looper which is useable as Au also.
RE-1 by Kai Aras also a cool and long looping feature.
ENSO as said.
Group the loop (may also be able to loop longer stuff)
Quantiloop pro
That being said I guess I'm spoiled as fuck because all the looping apps feel kinda like dog shit compared to the RC505. They are stiff, unresponsive, fidgety, and the BPM is almost always only determined before the loop is made instead of having the option of doing it after the loop is made based on the first loop recorded (which is a feature not enough people are begging for, it's the ultimate feature for a responsive reactive jammy looper, and it's why Marc Rebillet can do what he does in a crowd on the fly)
As I write in the previous post Android Message Handling Mechanism, all messages dispatched to main thread will be handled in the looper of main thread. If a message cost a long time, Android will report an ANR. It's necessary for a monitor library to detect ANR, so I need to log time costs for handling each message and report when the time reaches a threshold.
Let's begin with the code of Looper.loop():
Obviously, we only need to care about the execution time of msg.target.dispatchMessage(msg). I was thinking about hook Handler.dispatchMessage(Message msg) via Xposed, but Xposed works on class-level, I'll get the execution time of all handler instance. Actually, I just wanna monitor the message handling time of main looper. So can we do it with a lighter way?
Look at these lines:
Maybe I missed it, as there was a quote from back in 2018 about this being addressed. Is there a way to make our own loops for the looper? Really need this as I use this in another software and is one of the final pieces for a final move.
Caused by: java.lang.ClassCastException: com.google.android.material.textview.MaterialTextView cannot be cast to android.widget.EditText
at com.example.myapplication1.MainActivity.onBtnClick(MainActivity.java:29)
The Looperclass really is the heart of all this. First and foremost, Looper instancesare the ones that actually hold and create a MessageQueue and iterate overthe pending messages, blocking if none are available. In the case of ourMain Thread, it is a looper that blocks it until an event occurs (for examplethe user tapping a button in the UI) and finally delivers that event to whoevershould handle it (more about that later). This can be seen in action in theimplementation of the loop() method.
Wow, snarky much? It took me days of reading these forums before I found that spreadsheet. What a PITA.
Having commands sent on release is something you set in the app. There is a button for it., which opens a place to add additional functions on release. Well in the android version anyways. I do not believe there is a midi function for long or short presses as that is not on the spreadsheet.
After the looper is initialized, we need to call the loop() method to start the event loop, which has quite some logging code. However, the most interesting part is quite easy to understand, as shown below (modified for the sake of simplicity):public static void loop() { final MessageQueue queue = myLooper().mQueue; for (;;) { // fetches the next message to process Message msg = queue.next(); // might block if (msg == null) { // No message indicates that the message queue is quitting. return; } // dispatches the message msg.target.dispatchMessage(msg); // recycles the message msg.recycleUnchecked(); }}
References:
-is-the-purpose-of-looper-and-how-to-use-it
-core-looper-handler-and-handlerthread-bd54d69fe91a
-is-the-relationship-between-looper-handler-and-messagequeue-in-android
-do-i-use-now-that-handler-is-deprecated
This widget allows cycling over set keys defined in loopers accessible from General settings menu. Good example for usage might be Doom and weapon picking. Doom binds weapons on keys 1-9. We can add these keys to looper and cycle over them with looper widget.
Hello guys. Same problem on my side. @jeff_fmod did you guys figured it out?
I have tested my built on different android devices and its running fine. But on Redmi Note 10 pro its causing same crash.
Implementation 2
Speaking of the looper. This feature could also be implemented if the looper would be able to store the recording so it survives a power cycle. Then one can control playback using the existing looper controls. 2351a5e196
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