什么是模拟血压基于android平台的模拟血压计实现（surfaceView的熟练使用）

  1 package com.example.test;
  2 
  3 
  4 
  5 import android.content.Context;
  6 import android.graphics.Bitmap;
  7 import android.graphics.Canvas;
  8 import android.graphics.Color;
  9 import android.graphics.Paint;
 10 import android.graphics.RectF;
 11 import android.util.AttributeSet;
 12 import android.util.TypedValue;
 13 import android.view.SurfaceHolder;
 14 import android.view.SurfaceView;
 15 
 16 
 17 
 18 
 19 import java.text.DecimalFormat;
 20 
 21 /**
 22  * Created by yinxiaofei on 2016/1/13.
 23  */
 24 
 25 public class Sphygmomanometer extends SurfaceView implements SurfaceHolder.Callback ,Runnable
107 
108     public Sphygmomanometer(Context context, AttributeSet attrs) 
114     @Override
115     protected void onMeasure(int with,int height)
135     @Override
136     public void surfaceCreated(SurfaceHolder surfaceHolder) 
156 
157     @Override
158     public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
159 
160     }
161 
162     @Override
163     public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
164 
165         isRunning=false;
166 
167     }
168 
169     @Override
170     public void run()  catch (InterruptedException e) {
181                     e.printStackTrace();
182                 }
183             }
184         }
185     }
186 
187     private void draw() 
200         } catch (Exception e) {
201            // e.printStackTrace();这里的异常不处理，
202         } finally 
206         }
207 
208     }
209 
210     private void drawShowHeightAndShow() elseelseelseelseelseelse{
239                                 mSpeed= (float) 0.008;
240                             }
241 
242                         }
243                     }
244                 }
245             }
246         }
247         if(addORsub){
248             CurrentTemperature+=mSpeed*100;
249         }else{
250             CurrentTemperature-=mSpeed*100;
251         }
252 
253         //
254 
255         Paint RectPaint=new Paint();
256         RectPaint.setStyle(Paint.Style.FILL);
257 //        RectPaint.setColor(getResources().getColor(R.color.theme_color));
258 //        这里主要是对温度的显示，画矩形的过程中，唯一改变的就是Top这一个值了
259         //这里(CurrentTemperature-BeginTenperature)/20表示的是刻度值的换算，从温度计过度到血压计的刻度值
260         if(Math.abs(CurrentTemperature-TargetTemperature)>0.8)
261         mCanvas.drawRect(centerWith-MercuryWith/2,
262                 (scaleLong)*10*(temperatureRange)+abHeight*2-
263                         (CurrentTemperature-BeginTenperature)/60*10*scaleLong,
264                 centerWith+MercuryWith/2,
265                 (scaleLong)*10*(temperatureRange)+abHeight*2,
266                 RectPaint);
267         else
275 
276         //这里开始画显示的数字
277         Paint ShowNumberTextPaint=new Paint();
278         ShowNumberTextPaint.setColor(Color.BLACK);
279         ShowNumberTextPaint.setTextSize(mShowSymbolTextSize);
280         ShowNumberTextPaint.setShader(null);
281         fomat = new DecimalFormat("##0.0");
282         float display = Float.parseFloat(fomat.format(trueTemperature));
283         mCanvas.drawText(display + " kpa",
284                 mWith * 3 / 2 - ShowNumberTextPaint.getTextSize() * 2,
285                 temperatureAllLong / 2 - ShowNumberTextPaint.getTextSize(),
286                 ShowNumberTextPaint
287         );
288 
289 
290         mCanvas.drawText(display + " kpa",
291                 mWith*3/2- ShowNumberTextPaint.getTextSize() * 2,
292                 temperatureAllLong/2+ShowNumberTextPaint.getTextSize(),
293                 ShowNumberTextPaint
294         );
295 
296     }
297 
298     private void drawBg() else{
318                     mCanvas.drawLine(centerWith+MercuryWith/2,
319                             everyTemparaturHeight*i+j*(scaleLong)+abHeight*2,
320                             centerWith+MercuryWith/2+MinLineLong,
321                             everyTemparaturHeight*i+j*(scaleLong)+abHeight*2,LinePaint);
322                 }
323 
324             }
325 
326         }
327         //画左边的刻度
328         for(int i=0;i<temperatureRange;i++)else{
350                     mCanvas.drawLine(centerWith-MercuryWith/2,
351                             everyTemparaturHeight*i+j*(scaleLong)+abHeight*2,
352                             centerWith-MercuryWith/2-MinLineLong,
353                             everyTemparaturHeight*i+j*(scaleLong)+abHeight*2,LinePaint);
354                 }
355 
356             }
357             //画最后一个刻度
358             if(i==temperatureRange-1)
366         }
367         //画红色的园
368         Paint CirclePaint=new Paint();
369         CirclePaint.setStyle(Paint.Style.FILL);
370  //       CirclePaint.setColor(getResources().getColor(R.color.theme_color));
371         mCanvas.drawCircle(centerWith,
372                 everyTemparaturHeight*(temperatureRange)+abHeight*2+MercuryWith,
373                 MercuryWith*3/2,CirclePaint);
374         //画摄氏度的符号
375         Paint symbolTextPaint=new Paint();
376         symbolTextPaint.setColor(Color.BLACK);
377         symbolTextPaint.setTextSize(mSymbolTextSize);
378         symbolTextPaint.setShader(null);
379         mCanvas.drawText("BP",
380                 centerWith - MaxLineLong / 2 - MercuryWith / 2 - symbolTextPaint.getTextSize() / 2,
381                 abHeight * 2 - symbolTextPaint.getTextSize(),
382                 symbolTextPaint
383         );
384         mCanvas.drawText("BP",
385                 centerWith + MaxLineLong / 2 + MercuryWith / 2 - symbolTextPaint.getTextSize() / 2,
386                 abHeight * 2 - symbolTextPaint.getTextSize(),
387                 symbolTextPaint
388         );
389 
390         //绘制显示数字的符号和虚线
391         Paint ShowsymbolTextPaint=new Paint();
392         ShowsymbolTextPaint.setColor(Color.BLACK);
393         ShowsymbolTextPaint.setTextSize(mShowSymbolTextSize);
394         ShowsymbolTextPaint.setShader(null);
395 
396         mCanvas.drawText("- - - - - - - -",
397                 mWith * 3 / 2 - ShowsymbolTextPaint.getTextSize() * 2,
398                 temperatureAllLong/2,
399                 ShowsymbolTextPaint
400         );
401 
402     }
403 
404     private float trueTemperature = 0;
405 
406     public void setTargetTemperature(float targetTemperature) 
411         if(targetTemperature>EndTenperrature)
414         TargetTemperature = targetTemperature;
415     }
416 }