[leJOS教學] 感測器資訊顯示在NXT螢幕, 結合按鈕換頁

將4種感測器資訊顯示在NXT螢幕上, 結合按鈕換頁。 加入了Button.LEFT 與 Button.RIGHT的點擊事件監聽器, 藉此達到換頁的功能。 每一頁(case0~case3) 就是獨一的感測器資訊, 這樣就不用把所有的資訊都擠在同一頁了。 覺得NXT螢幕很擠的朋友可以參考本份程式碼。 螢幕截圖稍後補上~ ======================================================= import javax.microedition.lcdui.Graphics; import lejos.nxt.Button; import lejos.nxt.ButtonListener; import lejos.nxt.LCD; import lejos.nxt.LightSensor; import lejos.nxt.SensorPort; import lejos.nxt.SoundSensor; import lejos.nxt.TouchSensor; import lejos.nxt.UltrasonicSensor; import lejos.util.Delay; public class draw { static int type=0; public static void main(String[] arg){ LightSensor light=new LightSensor(SensorPort.S2); UltrasonicSensor ultra=new UltrasonicSensor(SensorPort.S4); TouchSensor touch=new TouchSensor(SensorPort.S1); SoundSensor sound=new SoundSensor(SensorPort.S3); Graphics gra=new Graphics(); int Lvalue,Uvalue,Svalue; boolean Tvalue; Button.ESCAPE.addButtonListener(new ButtonListener() { public void buttonReleased(Button arg0) {System.exit(1);} public void buttonPressed(Button arg0) {} }); Button.LEFT.addButtonListener(new ButtonListener() { public void buttonReleased(Button arg0) { type--; if(type<0){type=3;} } public void buttonPressed(Button arg0) {} }); Button.RIGHT.addButtonListener(new ButtonListener() { public void buttonReleased(Button arg0) { type++; if(type>3){type=0;} } public void buttonPressed(Button arg0) {} }); while(true){ switch(type){ case 0: Lvalue=light.readValue(); gra.clear(); LCD.drawString("Light", 1, 1); gra.drawRect(40, 10, 10, 50); gra.fillRect(41, 60-(int)(Lvalue/1.6), 9, (int)(Lvalue/1.6)); break; case 1: Uvalue=ultra.getDistance(); gra.clear(); LCD.drawString("Ultra", 1, 1); gra.drawArc(25, 10, 50, 50, 0, 180); gra.drawLine(25, 35, 75, 35); if(Uvalue>0&&Uvalue<180){ gra.drawLine(50, 35, 50+(int)(Math.cos(Math.toRadians(Uvalue))*25), 35-(int)(Math.sin(Math.toRadians(Uvalue))*25)); } break; case 2: Svalue=sound.readValue(); gra.clear(); LCD.drawString("Sound", 1, 1); gra.drawLine(40, 50, 60, 50); gra.drawLine(45, 60, 55, 60); gra.drawLine(40, 50, 45, 60); gra.drawLine(60, 50, 55, 60); if(Svalue>25){gra.drawArc(40, 40, 20, 20, 45, 90);} if(Svalue>50){gra.drawArc(35, 35, 30, 30, 45, 90);} if(Svalue>75){gra.drawArc(30, 30, 40, 40, 45, 90);} if(Svalue>100){gra.drawArc(25, 25, 50, 50, 45, 90);} break; case 3: Tvalue=touch.isPressed(); gra.clear(); gra.drawRect(25, 10, 50, 50); gra.drawRect(32, 17, 36, 36); gra.drawLine(25, 10, 32, 17); gra.drawLine(75, 60, 68, 53); LCD.drawString("Touch", 1, 1); if(Tvalue){ gra.drawLine(26,11,74,11); gra.drawLine(27,12,73,12); gra.drawLine(28,13,72,13); gra.drawLine(29,14,71,14); gra.drawLine(30,15,70,15); gra.drawLine(31,16,69,16); gra.drawLine(26,11,26,59); gra.drawLine(27,12,27,58); gra.drawLine(28,13,28,57); gra.drawLine(29,14,29,56); gra.drawLine(30,15,30,55); gra.drawLine(31,16,31,54); } else{ gra.drawLine(74,11,74,59); gra.drawLine(73,12,73,58); gra.drawLine(72,13,72,57); gra.drawLine(71,14,71,56); gra.drawLine(70,15,70,55); gra.drawLine(69,16,69,54); gra.drawLine(74,59,26,59); gra.drawLine(73,58,27,58); gra.drawLine(72,57,28,57); gra.drawLine(71,56,29,56); gra.drawLine(70,55,30,55); gra.drawLine(69,54,31,54); } break; } Delay.msDelay(500); } } }