我基于步数计数器传感器制作了简单的stepCounter。我知道并不是每个人的手机都具有这种传感器,因此我已经通过onResume中的Toast消息保护了我的代码。两个显示Toast Message的设备都已找到传感器。应用在三星银河S5上正常运行,但在更高型号的S10E上却无法正常运行。有谁知道这个错误的原因吗?
public class StepCounterActivity extends AppCompatActivity implements SensorEventListener {
private TextView textViewStepCounter;
private SensorManager mSensorManager;
private boolean running = false;
int stepCount = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_step_counter);
textViewStepCounter = (TextView) findViewById(R.id.textViewStepCounter);
mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
}
@Override
protected void onResume() {
super.onResume();
running = true;
Sensor countSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER);
if(countSensor != null){
mSensorManager.registerListener(this,countSensor,SensorManager.SENSOR_DELAY_UI);
Toast.makeText(this, "Sensor found", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(this,"Sensor not found",Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onPause() {
super.onPause();
running = false;
}
@Override
public void onSensorChanged(SensorEvent event) {
if(running){
stepCount = (int) event.values[0];
textViewStepCounter.setText(String.valueOf(stepCount));
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}
在Android 10上,您需要询问权限以获取对步进传感器的访问权限。
在清单中使用它。
<uses-permission android:name="android.permission.ACTIVITY_RECOGNITION"/>
您可能想询问权限:
if(ContextCompat.checkSelfPermission(this,
Manifest.permission.ACTIVITY_RECOGNITION) == PackageManager.PERMISSION_DENIED){
//ask for permission
requestPermissions(new String[]{Manifest.permission.ACTIVITY_RECOGNITION}, PHYISCAL_ACTIVITY);
}
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