The main thread in Android

The main thread in Android does not need to be created.

The Thread.Sleep Setup program is blocked.

1  Public classMainactivity extends Appcompatactivity {2 3 @Override4     protected voidonCreate (Bundle savedinstancestate) {5 super.oncreate (savedinstancestate);6 Setcontentview (r.layout.activity_main);7Findviewbyid (R.ID.BT). Setonclicklistener (NewView.onclicklistener () {8 @Override9              Public voidOnClick (View v) {Ten                 Try { OneThread.Sleep ( +); ASystem. out. Print ("The thread is running, is sleeping"); -}Catch(interruptedexception e) { - e.printstacktrace (); the                 } -             } -         }); -     } +}

When you create a new child thread, pressing the button will not kill it and will pop up immediately.

1 NewThread () {2 @Override3                      Public voidrun () {4                         Try {5                              while(true){6Sleep +);7System. out. Print ("Hello, this is the new thread!");8                             }9}Catch(interruptedexception e) {Ten e.printstacktrace (); One                         } A                     } -}.start ();

The main thread in Android