C#生成code128條形碼的辦法。本站提示廣大學習愛好者:(C#生成code128條形碼的辦法)文章只能為提供參考,不一定能成為您想要的結果。以下是C#生成code128條形碼的辦法正文
本文實例引見了Android若何畫出觸摸軌跡的辦法,分享給年夜家供年夜家參考,詳細內容以下
後果圖:
完成代碼:
package com.android.gameview5; import android.app.Activity; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Path; import android.os.Bundle; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceHolder.Callback; import android.view.SurfaceView; import android.view.Window; import android.view.WindowManager; public class SurfaceViewActivity3 extends Activity { public void onCreate(Bundle s){ super.onCreate(s); //全屏顯示 requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(new MyView(this)); } public class MyView extends SurfaceView implements Callback,Runnable{ public static final int TIME_IN_FRAME =50; Paint mPaint = null; Paint mTextPaint = null; SurfaceHolder mSurfaceHolder = null; boolean mRunning = false; Canvas mCanvas = null; private Path mPath; private float mPosX,mPosY; public MyView(Context context){ super(context); this.setFocusable(true); this.setFocusableInTouchMode(true); mSurfaceHolder = this.getHolder(); mSurfaceHolder.addCallback(this); mCanvas = new Canvas(); mPaint = new Paint(); mPaint.setColor(Color.BLACK); mPaint.setAntiAlias(true); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeCap(Paint.Cap.ROUND); mPaint.setStrokeWidth(6); mPath = new Path(); mTextPaint = new Paint(); mTextPaint.setColor(Color.BLACK); mTextPaint.setTextSize(15); } public boolean onTouchEvent(MotionEvent event){ int action = event.getAction(); float x = event.getX(); float y = event.getY(); switch(action){ case MotionEvent.ACTION_DOWN: mPath.moveTo(x, y); break; case MotionEvent.ACTION_MOVE: mPath.quadTo(mPosX, mPosY, x, y); break; case MotionEvent.ACTION_UP: //mPath.reset(); break; } //記載以後觸摸點適合前得坐標 mPosX = x; mPosY = y; return true; } private void onDraw(){ mCanvas.drawColor(Color.WHITE); //繪制曲線 mCanvas.drawPath(mPath, mPaint); mCanvas.drawText("以後觸筆X:"+mPosX,0,20,mTextPaint); mCanvas.drawText("以後觸筆Y:"+mPosY,0,40,mTextPaint); } public void run() { // TODO Auto-generated method stub while(mRunning){ long startTime = System.currentTimeMillis(); synchronized(mSurfaceHolder){ mCanvas = mSurfaceHolder.lockCanvas(); onDraw(); mSurfaceHolder.unlockCanvasAndPost(mCanvas); } long endTime = System.currentTimeMillis(); int diffTime = (int) (endTime - startTime); while(diffTime<=TIME_IN_FRAME){ diffTime =(int)(System.currentTimeMillis()-startTime); Thread.yield(); } } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // TODO Auto-generated method stub } @Override public void surfaceCreated(SurfaceHolder holder) { mRunning = true; new Thread(this).start(); } @Override public void surfaceDestroyed(SurfaceHolder holder) { // TODO Auto-generated method stub mRunning = false; } } }
以上就是Android輕松畫出觸摸軌跡的詳細辦法,願望對年夜家的進修有所贊助。