Question

我使用Sensor.TYPE_STEP_COUNTER我知道它只在重新启动时重置。是否有另一种方法可以在按下按钮时将步骤重置为0？

请参阅我的代码，您将找到Runactivity.class

也许我可以用另一种重置步骤的方式来做。没有让我每次重启。

public class RunActivity extends AppCompatActivity implements SensorEventListener{

    private SensorManager sensorManager;
    private TextView count;
    boolean activityRunning;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_run);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        Bundle bundle = getIntent().getExtras();
        final String naam   = bundle.getString("naam");
        TextView NaamView = null;

        Button stopRun = (Button) findViewById(R.id.stopRun);

        count = (TextView) findViewById(R.id.countView);
        sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);

        NaamView =  (TextView) findViewById(R.id.naamRunText);

        NaamView.setText(naam);

        stopRun.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                String countValue = count.getText().toString();



                Log.d("countVAL", String.valueOf(countValue));


                Intent myIntent = new Intent(RunActivity.this, HomeScreenActivity.class);

                Bundle bundle = new Bundle();


                bundle.putString("naam", naam);
                sensorManager.flush(RunActivity.this);
                sensorManager.unregisterListener(RunActivity.this);
                count.setText("0");
                onStop();

                myIntent.putExtras(bundle);

                startActivity(myIntent);


            }
        });

    }



    @Override
    protected void onResume() {
        super.onResume();
        activityRunning = true;
        Sensor countSensor = sensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER);
        if(countSensor != null){
            sensorManager.registerListener(this, countSensor, SensorManager.SENSOR_DELAY_UI);

        }else{
            Toast.makeText(this, "Jouw apparaat heeft geen sensor!", Toast.LENGTH_LONG) .show();
        }
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        if(activityRunning){
            count.setText(String.valueOf(event.values[0]));
        }else{
            event.values[0] = 0;
        }



    }



    @Override
    protected void onPause() {
        super.onPause();
        sensorManager.unregisterListener(this);
        activityRunning = false;
    }



    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }

    protected void onDestroy() {
        super.onDestroy();

    }
}

Answer 1

当您单击应用程序中的重置按钮时，将当前步骤计数保存到SharedPreferences。并且您需要一种方法来确定最后一次重启的时间，因为每次重启时保存的计数都会无效。

private int stepsInSensor = 0;
private int stepsAtReset;

void onCreate() {
  SharedPreferences prefs = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE); 
  stepsAtReset = prefs.getInt("stepsAtReset", 0);
}

    public void onClick(View v) {
        stepsAtReset = stepsInSensor;

        SharedPreferences.Editor editor =
            getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();
        editor.putInt("stepsAtReset", stepsAtReset);
        editor.commit();

        // you can now display 0:
        count.setText(String.valueOf(0));
    }

@Override
public void onSensorChanged(SensorEvent event) {
    if(activityRunning){
        stepsInSensor = Integer.valueOf(event.values[0]);
        int stepsSinceReset = stepsInSensor - stepsAtReset;
        count.setText(String.valueOf(stepsSinceReset));
    }else{
        event.values[0] = 0;
    }
}

Answer 2

不，基于inline note

此类型的传感器返回用户所采取的步数自上次重启时激活。该值以a返回 float（小数部分设置为零），仅重置为零在系统重启。

只能在重新启动系统时重置

Answer 3

我搜索了它并试图用不同的方式做到这一点。什么都没有帮助。然后我找到了最简单的方法。

在onSensorChanged()中只需添加计数器，以便在调用onSensorChanged()时（每一步都会调用它），计数器只会计算步数，然后将此计数器显示给您的UI，而不是显示event.values[0]

的值重置按钮上的

再次使计数器为0。

即使在卸载后，我的步数计数器也不会重置步骤

3 个答案: