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If i start a background thread, what will happen if the activity that is started from finishes() before the thread terminates. Will the thread terminate as well or will it stay alive?
new Thread(new Runnable() {
public void run() {
while (mProgressStatus > 0) {
// Update the progress bar
mHandler.post(new Runnable() {
public void run() {
progressbar.setProgress(mProgressStatus);
}
});
}
}
}).start();
786
Short Answer: When a thread has finished its process, if nothing else holds a reference to it, the garbage collector will dispose of it automatically.
Once a thread in the thread pool completes its task, it's returned to a queue of waiting threads. From this moment it can be reused. This reuse enables applications to avoid the cost of creating a new thread for each task. There is only one thread pool per process.
A thread dies naturally when its run() method exits normally. For example, the while loop in this method is a finite loop--it will iterate 100 times and then exit. A thread with this run() method will die naturally after the loop and the run() method completes.
A thread is automatically destroyed when the run() method has completed. But it might be required to kill/stop a thread before it has completed its life cycle. Previously, methods suspend(), resume() and stop() were used to manage the execution of threads.
Threads run idependently from their parents. Thread dies when it returns from Thread.run() back to JVM normally or due to an uncaught exception.
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