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我遇到的問題是我想接收用戶輸入來比較用戶通過提交按鈕和datepicker，timepicker和numberpick輸入和提交的計劃日期和時間（幾秒鐘）。比較日曆參數與Android時空指針時間參數
然後，當用戶按下提交時，該信息將被設置到日曆對象中，並且應用程序始終循環IOIOlooper以檢查是否應調用事件（例如打開引腳以打開指示燈）。 ..
任何問題，疑慮或澄清需要請隨時告訴我。
*編輯：此外，應用程序立即崩潰，並在logcat中產生一個空指針錯誤。
謝謝你們;
主要活動這種活性是該方案的主要活性，它是運行應用程序啓動時，它是IOIOActivity的延伸用於與IOIO板接口：
now = new Time();
eventCalendar = eventCalendar.getInstance();
eventCalendar.set(0,0,0,0,0,0);
submitEvent = (Button) findViewById(R.id.submit);
// Wakelock
PowerManager powerManageDevice = (PowerManager) getSystemService(Context.POWER_SERVICE);
wakeLockDevice = powerManageDevice.newWakeLock(
PowerManager.FULL_WAKE_LOCK, "Wakelocking the Scheduler");
super.onCreate(savedInstanceState);
wakeLockDevice.acquire();
setContentView(R.layout.activity_main);
chooseDay = (DatePicker) findViewById(R.id.datepicker1);
chooseTime = (TimePicker) findViewById(R.id.timepicker1);
togglePin = (ToggleButton) findViewById(R.id.ledtoggle);
chosePin1 = (NumberPicker) findViewById(R.id.pinpick1);
chosePin1.setMaxValue(46);
chosePin1.setMinValue(1);
chosePin2 = (NumberPicker) findViewById(R.id.pinpick2);
chosePin2.setMaxValue(46);
chosePin2.setMinValue(1);
chosePin3 = (NumberPicker) findViewById(R.id.pinpick3);
chosePin3.setMaxValue(46);
chosePin3.setMinValue(1);
chosePin4 = (NumberPicker) findViewById(R.id.pinpick4);
chosePin4.setMaxValue(46);
chosePin4.setMinValue(1);
chosePin5 = (NumberPicker) findViewById(R.id.pinpick5);
chosePin5.setMaxValue(46);
chosePin5.setMinValue(1);
chosePin6 = (NumberPicker) findViewById(R.id.pinpick6);
chosePin6.setMaxValue(46);
chosePin6.setMinValue(1);
chosePin7 = (NumberPicker) findViewById(R.id.pinpick7);
chosePin7.setMaxValue(46);
chosePin7.setMinValue(1);
chosePin8 = (NumberPicker) findViewById(R.id.pinpick8);
chosePin8.setMaxValue(46);
chosePin8.setMinValue(1);
chosePin9 = (NumberPicker) findViewById(R.id.pinpick9);
chosePin9.setMaxValue(46);
chosePin9.setMinValue(1);
secondPicker = (NumberPicker) findViewById(R.id.secondPicker);
secondPicker.setMaxValue(59);
secondPicker.setMinValue(0);
submitEvent.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
eventCalendar.set(chooseDay.getYear(), chooseDay.getMonth(), chooseDay.getDayOfMonth(), chooseTime.getCurrentHour(), chooseTime.getCurrentMinute(), secondPicker.getValue());
}
});
內部類：
class Looper extends BaseIOIOLooper {
/** The on-board LED. */
private DigitalOutput led_;
private DigitalOutput pin1PWM;
private DigitalOutput pin2PWM;
private DigitalOutput pin3PWM;
private DigitalOutput pin4PWM;
private DigitalOutput pin5PWM;
private DigitalOutput pin6PWM;
private DigitalOutput pin7PWM;
private DigitalOutput pin10PWM;
private DigitalOutput pin11PWM;
private DigitalOutput pin12PWM;
private DigitalOutput pin13PWM;
private DigitalOutput pin14PWM;
private DigitalOutput pin27PWM;
private DigitalOutput pin28PWM;
private DigitalOutput pin34PWM;
private DigitalOutput pin35PWM;
private DigitalOutput pin36PWM;
private DigitalOutput pin37PWM;
private DigitalOutput pin38PWM;
private DigitalOutput pin39PWM;
private DigitalOutput pin40PWM;
/**
* private DigitalOutput pin1; private DigitalOutput pin2; private
* DigitalOutput pin3; private DigitalOutput pin4; private DigitalOutput
* pin5; private DigitalOutput pin6; private DigitalOutput pin7;
*/
private DigitalOutput pin8;
private DigitalOutput pin9;
/**
* private DigitalOutput pin10; private DigitalOutput pin11; private
* DigitalOutput pin12; private DigitalOutput pin13; private
* DigitalOutput pin14;
*/
private DigitalOutput pin15;
private DigitalOutput pin16;
private DigitalOutput pin17;
private DigitalOutput pin18;
private DigitalOutput pin19;
private DigitalOutput pin20;
private DigitalOutput pin21;
private DigitalOutput pin22;
private DigitalOutput pin23;
private DigitalOutput pin24;
private DigitalOutput pin25;
private DigitalOutput pin26;
// private DigitalOutput pin27;
// private DigitalOutput pin28;
private DigitalOutput pin29;
private DigitalOutput pin30;
private DigitalOutput pin31;
private DigitalOutput pin32;
private DigitalOutput pin33;
/**
* private DigitalOutput pin34; private DigitalOutput pin35; private
* DigitalOutput pin36; private DigitalOutput pin37; private
* DigitalOutput pin38; private DigitalOutput pin39; private
* DigitalOutput pin40;
*/
private DigitalOutput pin41;
private DigitalOutput pin42;
private DigitalOutput pin43;
private DigitalOutput pin44;
private DigitalOutput pin45;
private DigitalOutput pin46;
private DigitalOutput[] pinDigArray = { pin1PWM, pin2PWM, pin3PWM,
pin4PWM, pin5PWM, pin6PWM, pin7PWM, pin8, pin9, pin10PWM,
pin11PWM, pin12PWM, pin13PWM, pin14PWM, pin15, pin16, pin17,
pin18, pin19, pin20, pin21, pin22, pin23, pin24, pin25, pin26,
pin27PWM, pin28PWM, pin29, pin30, pin31, pin32, pin33,
pin34PWM, pin35PWM, pin36PWM, pin37PWM, pin38PWM, pin39PWM,
pin40PWM, pin41, pin42, pin43, pin44, pin45, pin46 };
/**
* Called every time a connection with IOIO has been established.
* Typically used to open pins.
*
* @throws ConnectionLostException
* When IOIO connection is lost.
*
* @see ioio.lib.util.AbstractIOIOActivity.IOIOThread#setup()
*/
@Override
protected void setup() throws ConnectionLostException {
led_ = ioio_.openDigitalOutput(0, true);
for (int i = 0; i < pinDigArray.length; i++) {
pinDigArray[i] = ioio_.openDigitalOutput(i + 1, false);
}
}
/**
* Called repetitively while the IOIO is connected.
*
* @throws ConnectionLostException
* When IOIO connection is lost.
*
* @see ioio.lib.util.AbstractIOIOActivity.IOIOThread#loop()
*/
@Override
public void loop() throws ConnectionLostException {
now.setToNow();
led_.write(!togglePin.isChecked());
try {
Thread.sleep(100);
} catch (InterruptedException e) {
}
for (int i = 0; i < pinDigArray.length; i++) {
if (chosePin1.getValue() == i + 1) {
if(now.monthDay == eventCalendar.DAY_OF_MONTH)
pinDigArray[i].write(true);
} else {
pinDigArray[i].write(false);
}
}
}
}
/**
* A method to create our IOIO thread.
*
* @see ioio.lib.util.AbstractIOIOActivity#createIOIOThread()
*/
@Override
protected IOIOLooper createIOIOLooper() {
return new Looper();
}
試了一下編輯工作這樣：
public void loop() throws ConnectionLostException {
now.setToNow();
led_.write(!togglePin.isChecked());
try {
Thread.sleep(100);
} catch (InterruptedException e) {
}
for (int i = 0; i < pinDigArray.length; i++) {
if (chosePin1.getValue() == i + 1) {
if(now.compare(now, eventTime) == 0)
pinDigArray[i].write(true);
} else {
pinDigArray[i].write(false);
}
}
我改變了日曆到另一個計時器對象，並試圖只比較這兩個值。我將eventTime對象實例化爲全0。
* 3rd編輯：我也完全刪除了條件語句，它仍然崩潰;我不認爲循環/檢查語句是什麼造成這個問題。
我得到一個：Java運行時異常：無法啓動活動ComponentInfo
解決它：
我只是在頂部這裏刪除所有零的實例： eventCalendar.set（0， 0,0,0,0,0）;
也; Time.compare（now，eventTime）== 0是更好的比較。
編輯我的問題;一秒 – Tukajo