Android:background thread pool and uithread thread pool

Origin

You want to specify the thread pool where runnable executes, whether it is called in the UI thread or thread, anywhere in the code.

Codes

 PackageCom.example.androidbackgroundexecuter;ImportJava.util.concurrent.Executor;ImportAndroid.os.Handler;ImportAndroid.os.HandlerThread;ImportAndroid.os.Looper;ImportAndroid.os.MessageQueue;/** * * @author Zheng haibo * @Web http://www.mobctrl.net * */ Public Final  class globalexecutor implements Executor {    Static FinalString App_executor ="App_executer";Private FinalHandler MainHandler;Private FinalHandler Backgroundhandler; Public Globalexecutor() {if(!isonmainthread ()) {Throw NewIllegalStateException ("error! Please init the Executor in the main thread ... "); } MainHandler =NewHandler (Looper.getmainlooper ()); Handlerthread Handlerthread =NewHandlerthread (App_executor);        Handlerthread.start (); Backgroundhandler =NewHandler (Handlerthread.getlooper ()); }@Override     Public void Execute(FinalRunnable command) {executeinbackground (command,0); }/** * Execute the command in background thread with a delay of {@link #delay} * * @param command */     Public void Execute(FinalRunnable command,intDelay) {executeinbackground (command, delay); }/** * Execute the command in Uithread * * @param Command */     Public void Executeinuithread(FinalRunnable command) {mainhandler.post (command); }/** * Execute the command in main thread with a delay of {@link #delay} * * @param Command * /     Public void Executeinuithread(FinalRunnable command,intDelay) {mainhandler.postdelayed (command, delay); }/** * Execute the command in background thread with a delay of {@link #delay} * * @param command */     Public void Executeinbackground(FinalRunnable command,Final intDelay) {if(Isonmainthread ())        {executedelayedafteridleunsafe (command, delay); }Else{Mainhandler.post (NewRunnable () {@Override                 Public void Run() {executedelayedafteridleunsafe (command, delay);        }            }); }    }/** * Execute the command in background thread * * @param Command */     Public void Executeinbackground(FinalRunnable command) {executeinbackground (command,0); }Private Boolean Isonmainthread() {returnLooper.getmainlooper (). GetThread () = = Thread.CurrentThread (); }Private void Executedelayedafteridleunsafe(FinalRunnable task,Final intDelay) {Looper.myqueue (). Addidlehandler (NewMessagequeue.idlehandler () {@Override             Public Boolean Queueidle() {backgroundhandler.postdelayed (task, delay);return false;    }        }); }}

Note that the new Globalexecutor () is required in the main thread.

Examples of Use

 PackageCom.example.androidbackgroundexecuter;Importandroid.app.Activity;ImportAndroid.graphics.Color;ImportAndroid.os.Bundle;Importandroid.os.Process;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.widget.Button; Public  class mainactivity extends Activity {    PrivateGlobalexecutor Mglobalexecutor =NULL;PrivateButton btn1;PrivateButton btn2;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate);        Setcontentview (R.layout.activity_main); Mglobalexecutor =NewGlobalexecutor ();        BTN1 = (Button) Findviewbyid (r.id.btn_1); Btn1.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View arg0) {System.out.println ("DEBUG:BTN 1 click");                Btn1.setbackgroundcolor (Color.Black); Mglobalexecutor.execute (NewRunnable () {@Override                     Public void Run() {System.out.println ("Debug:click1 Execute tid ="+ Process.mytid () +", pid="+ process.mypid ());                }                }); Mglobalexecutor.executeinuithread (NewRunnable () {@Override                     Public void Run() {System.out. println ("Debug:click1 executeinuithread tid ="+ Process.mytid () +", pid="+ process.mypid ());            }                });        }        });        BTN2 = (Button) Findviewbyid (r.id.btn_2); Btn2.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View arg0) {System.out.println ("DEBUG:BTN 2 Click");NewThread (NewRunnable () {@Override                     Public void Run() {System.out.println ("Debug:click2 (run) tid ="+ Process.mytid () +", pid="+ process.mypid ()); Mglobalexecutor.execute (NewRunnable () {@Override                             Public void Run() {System.out. println ("Debug:click2 run execute in thread-tid ="+ Process.mytid () +", pid="+ process.mypid ());                        }                        }); Mglobalexecutor. Executeinuithread (NewRunnable () {@Override                                     Public void Run() {System.out. println ("Debug:click2 run execute in uithread-tid ="+ Process.mytid () +", pid="+ process.mypid ());                                    Btn1.setbackgroundcolor (color.red);                    }                                });            }}). Start ();    }        }); }}

Print

Click the button btn1 and btn2 successively, the log is as follows:

05- - Ten: -:49.045: I/system. out(3144):Debug: BTN1Click05- - Ten: -:49.115: I/system. out(3144):Debug: Click1 Executeinuithread tid =3144, pid=314405- - Ten: -:49.125: I/system. out(3144):Debug: Click1 Execute tid =3157, pid=314405- - Ten: -:50.105: I/system. out(3144):Debug: BTN2Click05- - Ten: -:50.105: I/system. out(3144):Debug: Click2 (run) tid =3582, pid=314405- - Ten: -:50.145: I/system. out(3144):Debug: Click2 Run ExecuteinchUithread-tid =3144, pid=314405- - Ten: -:50.175: I/system. out(3144):Debug: Click2 Run ExecuteinchThread-tid =3157, pid=3144

Advantages

It is very convenient for us to invoke the runnable we want to perform in any thread.

More communication

Android Development Alliance QQ Group: 272209595

Android:background thread pool and uithread thread pool