Detailed explanation of how to use Android HandlerThread
HandlerThread inherits from Thread and encapsulates Looper internally.
First of all, the main difference between Handler and HandlerThread is: Handler and Activity are in the same thread, HandlerThread and Activity are not in the same thread, but in new threads other than the other (time-consuming operations cannot be performed in Handler).
usage:
import ;
import ;
import ;
import ;
import ;
import ;
public class MainActivity extends Activity {
HandlerThread handlerThread = new HandlerThread("test");
Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
(savedInstanceState);
setContentView(.activity_main);
("cur_=" + ());
//post(runnable), just run run() directly. ThreadId in run() is the same as UIThread in run().// handler = new Handler();
//post(runnable), run runnable in handlerThread, which is not UIThread handler = new Handler((), new Callback() {
@Override
public boolean handleMessage(Message msg) {
("receive =" + );
if ( == 1) {
return true;//Not passed to the outer layer anymore } else {
return false; //The outer layer handleMessage() continues to execute }
}
}) {
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
(msg);
("receive =" + );
}
};
(new Runnable() {
@Override
public void run() {
("handler_post_cur_codeview">
01-23 07:12:31.590: I/(12386): cur_id=1
01-23 07:12:31.590: I/(12386): =1866
01-23 07:12:31.590: I/(12386): handler_post_cur_id=1866
01-23 07:12:31.600: I/(12386): receive =1
01-23 07:12:31.600: I/(12386): receive =2
01-23 07:12:31.600: I/(12386): receive =2
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