Android Custom View Implementation Click and double click events

Custom View,

1. Customize a runnable thread toucheventcountthread to count the number of clicks within 500ms

2. Call the above thread in Ontouchevent in MyView

3. Customize a handler, in Toucheventhandler processing statistics to the Click event, click, double Tap, three click, can handle

The core code is as follows:

 Public classMyViewextendsView {...//count clicks in 500msToucheventcountthread Mintoucheventcount =NewToucheventcountthread (); //perform clicks or double-click events based on the number of clicks that toucheventcountthread countsToucheventhandler Mtoucheventhandler =NewToucheventhandler (); @Override Public Booleanontouchevent (Motionevent event) {Switch(Event.getaction ()) { CaseMotionevent.action_down: If (0 = = Mintoucheventcount.touchcount) //The first time you press, start counting                    postdelayed (Mintoucheventcount,);  Break;  Casemotionevent.action_up://A single Click event must be pressed and lifted, there must be a hold down, so only need to handle in action_up                mintoucheventcount.touchcount++;
                 Break;  CaseMotionevent.action_move: Break;  CaseMotionevent.action_cancel: Break; default:                 Break; }        return Super. Ontouchevent (event); }     Public class Toucheventhandler extendsHandler {@Override Public voidhandlemessage (Message msg) {Toast.maketext (Mcontext,"Touch "+ msg.arg1 +" time.", Toast.length_short). Show (); }    }     Public class Toucheventcountthread ImplementsRunnable { Public intTouchcount = 0; @Override Public voidrun () {Message msg=NewMessage (); msg.arg1 = Touchcount;            mtoucheventhandler.sendmessage (msg); Touchcount = 0; }    }   ......}

All code

 PackageCom.carloz.test.myapplication.view;ImportAndroid.content.Context;ImportAndroid.content.res.TypedArray;ImportAndroid.graphics.Bitmap;Importandroid.graphics.BitmapFactory;ImportAndroid.graphics.Canvas;ImportAndroid.graphics.Paint;ImportAndroid.os.Handler;ImportAndroid.os.Message;ImportAndroid.util.AttributeSet;ImportAndroid.util.Log;Importandroid.view.MotionEvent;ImportAndroid.view.View;ImportAndroid.widget.Toast;ImportCOM.CARLOZ.TEST.MYAPPLICATION.R;/*** Created by Root on 15-11-9.*/ Public classMyViewextendsView {PrivatePaint Mpaint =NewPaint (); Private BooleanMnotdestroy =true; Private intMCount = 0; PrivateMyThread MyThread;    Bitmap Bitmap; //Attrs    PrivateString MText; Private BooleanMstartchange;    Context Mcontext;  PublicMyView (Context context) {Super(context);    Init (); }     PublicMyView (Context context, AttributeSet attrs) {Super(context, attrs); TypedArray Ta=context.obtainstyledattributes (Attrs, R.styleable.myview); MText=ta.getstring (R.styleable.myview_text); Mstartchange= Ta.getboolean (R.styleable.myview_startchange,false); LOG.D ("ASDF", "mtext=" + MText + ", mstartchange=" +Mstartchange);        Ta.recycle ();    Init (); } @Overrideprotected voidonfinishinflate () {Super. Onfinishinflate (); } @Overrideprotected voidOnmeasure (intWidthmeasurespec,intHeightmeasurespec) {        Super. Onmeasure (Widthmeasurespec, Heightmeasurespec); } @Overrideprotected voidOnLayout (BooleanChangedintLeftintTopintRightintbottom) {        Super. OnLayout (changed, left, top, right, bottom); } @Overrideprotected voidOnDraw (canvas canvas) {Super. OnDraw (canvas); Mpaint.settextsize (50); Canvas.drawtext (MText+ mcount++, 20f, 100f, Mpaint);        Canvas.save (); Canvas.rotate (GetWidth ()/2, GetHeight ()/2);        Canvas.drawbitmap (Bitmap, 20f, 50f, Mpaint);        Canvas.restore (); if(NULL==myThread) {MyThread=NewMyThread ();        Mythread.start (); }} @Override Public Booleandispatchtouchevent (motionevent ev) {return Super. dispatchtouchevent (EV); } @Overrideprotected voidOnattachedtowindow () {Super. Onattachedtowindow (); Mnotdestroy=true; } @Overrideprotected voidOndetachedfromwindow () {Mnotdestroy=false; Super. Ondetachedfromwindow (); }    //count clicks in 500msToucheventcountthread Mintoucheventcount =NewToucheventcountthread (); //perform clicks or double-click events based on the number of clicks that toucheventcountthread countsToucheventhandler Mtoucheventhandler =NewToucheventhandler (); @Override Public Booleanontouchevent (Motionevent event) {Switch(Event.getaction ()) { CaseMotionevent.action_down:if(0 = = Mintoucheventcount.touchcount)//The first time you press, start countingPostdelayed (Mintoucheventcount, 500);  Break;  Casemotionevent.action_up://A single Click event must be pressed and lifted, there must be a hold down, so only need to handle in action_upmintoucheventcount.touchcount++;//                 Break;  CaseMotionevent.action_move: Break;  CaseMotionevent.action_cancel: Break; default:                 Break; }        return Super. Ontouchevent (event); }     Public classToucheventhandlerextendsHandler {@Override Public voidhandlemessage (Message msg) {Toast.maketext (Mcontext,"Touch" + Msg.arg1 + "time.", Toast.length_short). Show (); }    }     Public classToucheventcountthreadImplementsRunnable { Public intTouchcount = 0; @Override Public voidrun () {Message msg=NewMessage (); Msg.arg1=Touchcount;            Mtoucheventhandler.sendmessage (msg); Touchcount= 0; }    }    classMyThreadextendsThread {@Override Public voidrun () {Super. Run ();  while(Mnotdestroy) {if(Mstartchange) {postinvalidate (); Try{Thread.Sleep (500); } Catch(interruptedexception e) {e.printstacktrace (); }                }            }        }    }     Public voidinit () {Mcontext=GetContext (); Bitmap=Bitmapfactory.decoderesource (Getresources (), r.drawable.ic_launcher); }     Public voidSetText (String mText) { This. MText =MText; }     Public voidSetstartchange (BooleanMstartchange) {         This. Mstartchange =Mstartchange; }     Public BooleanGetstartchange () {return  This. Mstartchange; }}

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Android Custom View Implementation Click and double click events