获取psensor两次距离变化的时间差，不满2秒取消倒计时不起作用
Camera还是起来了，后面的Activity也跳转了
怎么回事
网上说是5.0以前不能CountDownTimer直接cancel，会不起作用。
但我开发环境6.0的，手机8.0的，为什么还是没用。
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.CountDownTimer;
import android.os.IBinder;
import android.os.PowerManager;
import android.os.SystemClock;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Toast;
public class SensorFunctionService extends Service {
private SensorManager mSensorManager;
private Sensor mPSensor;
private PowerManager mPowerManager;
private PowerManager.WakeLock mProximityWakeLock;
private CountDownTimer timer;
private long mLastProximityEventTime = 0;
private long milliseconds;
@Override
public void onCreate() {
super.onCreate();
mPowerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
mProximityWakeLock = mPowerManager.newWakeLock(32,"csl");
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
mPSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
if (null == mSensorManager) {
Log.d("csl", "deveice not support SensorManager");
}
SensorEventListener mSensorEventListener = new SensorEventListener() {
@Override
public void onSensorChanged(SensorEvent event) {
Log.d("csl", "onSensorChanged 。。。。");
if (event.sensor == null) {
return;
}
if (event.sensor.getType() == Sensor.TYPE_PROXIMITY){
float distance = event.values[0];
if (distance == 0.0) {
milliseconds = SystemClock.elapsedRealtime();
} else {
mLastProximityEventTime = SystemClock.elapsedRealtime();
}
final long timeSinceLastEvent = mLastProximityEventTime - milliseconds;
Log.d("xxxx"," data: " + distance +" +"+ milliseconds + " +"+mLastProximityEventTime + " +"+timeSinceLastEvent);
if (distance == 0.0) {
timer = new CountDownTimer(2000,1000) {
@Override
public void onTick(long millisUntilFinished) {
if ((timeSinceLastEvent < 2000) && (timeSinceLastEvent >0)) {
timer.cancel();
}
}
@Override
public void onFinish() {
//Intent intent = new Intent(SensorFunctionService.this, Main2Activity.class);
//intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
//startActivity(intent);
Intent cameraIntent = new Intent();
// 指定开启系统相机的Action
cameraIntent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.addCategory(Intent.CATEGORY_DEFAULT);
cameraIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
startActivity(cameraIntent);
timer = new CountDownTimer(5000,1000) {
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
Intent intent = new Intent(SensorFunctionService.this, Main2Activity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
startActivity(intent);
Toast.makeText(SensorFunctionService.this,"onFinish", Toast.LENGTH_SHORT).show();
}
}.start();
}
}.start();
}
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
};
mSensorManager.registerListener(mSensorEventListener, mPSensor, SensorManager.SENSOR_DELAY_NORMAL);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
new Thread(new Runnable() {
@Override
public void run() {
}
});
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
