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AN4503 数据表(PDF) 21 Page - STMicroelectronics |
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AN4503 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 26 page ![]() DocID026411 Rev 2 21/26 AN4503 Building a simple apk for testing 26 public class MainActivity extends Activity implements SensorEventListener{ private SensorManager mSensorManager; private Sensor mHumidity; TextView xViewP = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); xViewP = (TextView)findViewById(R.id.TextView01); xViewP.setText(" Humidity: "); //sensor mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE); mHumidity = mSensorManager.getDefaultSensor(Sensor.TYPE_RELATIVE_HUMIDITY); } @Override protected void onResume() { if(mSensorManager != null) mSensorManager.registerListener(this, mHumidity, SensorManager.SENSOR_DELAY_NORMAL); super.onResume(); } @Override protected void onPause() { super.onPause(); mSensorManager.unregisterListener(this); } public void onSensorChanged(SensorEvent event) { if (event.sensor.getType() == Sensor.TYPE_RELATIVE_HUMIDITY) { xViewP.setText("Humidity: " + event.values[0] + "- Temperature: " + event.value[1] ); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. |
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