Android Handler Message Pass parameters

Recently found message, send message can pass parameters, this idea is very good, so write an example, click on the screen, send a message to the activity, pass two parameters, and the activity destroyed!

The program opens the interface:

Click on the screen to destroy activity popup toast:

mainactivity:

Package com.cn.Android;      Import android.app.Activity;      Import Android.os.Bundle;      Import Android.os.Handler;      Import Android.os.Message;            Import Android.widget.Toast;  Public classMainactivity extends Activity {finalStatic intCanshu =1;  PublicHandler mhandler=NewHandler () { Public voidhandlemessage (Message msg) {Switch(msg.what) { CaseCanshu:string str1 = Msg.getdata (). GetString ("Text1");//Accept msg passed over the parametersString str2 = Msg.getdata (). GetString ("Text2");//Accept msg passed over the parametersinitfinishmainactivity (str1, str2);  Break; Default:  Break;                    }              }             }; @Override Public voidonCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);          Initmainactivity (); }                     Public voidinitmainactivity () {Setcontentview (NewMainactivityview ( This, This)); }                     Public voidinitfinishmainactivity (String str1, String str2) {Toast.maketext (mainactivity. This, str1+str2, Toast.length_long). Show ();          Finish (); }      }  

Mainactivityview:

Package com.cn.android;      Import Android.content.Context;      Import Android.graphics.Bitmap;      Import Android.graphics.BitmapFactory;      Import Android.graphics.Canvas;      Import Android.graphics.Rect;      Import Android.os.Bundle;      Import Android.os.Message;      Import android.view.MotionEvent;            Import Android.view.View;  Public classMainactivityview extends view{Privatemainactivity activity; Privatecontext Context; PrivateBitmap M_bitmap;  PublicMainactivityview (context context, mainactivity activity) {super (context);  This. Activity =activity;  This. Context =context;          Initbitmap (); }                     Public voidInitbitmap () {M_bitmap= Bitmapfactory.decoderesource ( This. Getresources (), r.drawable.bg); } @Override Public voidOnDraw (canvas canvas) {canvas.drawbitmap (M_bitmap,0,0,NULL); } @Override PublicBoolean ontouchevent (motioneventEvent) {              intx = (int)Event. GetX (); inty = (int)Event. GetY ();              Rect rect; Rect=NewRect (0,0, the,480); if(Rect.contains (x, y)) {Message msg=NewMessage (); Msg.what=Mainactivity.canshu; Bundle Bundle=NewBundle (); Bundle.putstring ("Text1","An example of Daming's message passing parameter! ");//storing data in bundlesBundle.putstring ("Text2","time:2011-09-05");//put data into bundlesMsg.setdata (bundle);//mes transmits data using bundlesActivity.mHandler.sendMessage (msg);//send a message with handler in activity            }                            returnSuper.ontouchevent (Event); }                          }  

Android Handler Message Pass parameters