So sánh 3 kỹ thuật handler-message handler post asynctask năm 2024
There are two ways to make asynchronous calls: Show What is Handler? A class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();0 objects that are sent from a different thread. With Defining a Thread Handler An Android application has a default thread — the main thread. When a class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();4, it’s bonded to the main thread. You override the class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();5 method in order to process messages that are sent to the handler. The class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();6 class consists of a user-defined message code class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();7, two integer value arguments class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();8 and class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();9, and an arbitrary object `AsyncTask`0. Not all fields are set by the sender. Usually, at minimum the message code is set to identify an event. In the process of uploading an image to Handler handler = new Handler() { }Running a Task in a Thread As a general rule, it’s best to not block the main thread in Android. So time-consuming tasks must be run in a background thread. You can extend the
class S3PutObjectThread extends Thread { }
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// Create a thread and start it
new S3PutObjectThread(selectedImage).start();Comparison Between Handler and AsyncTask
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