详解android光线传感器lightsensor的使用-创新互联
调用anroid的光线传感器使用。
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MainActivity.Java
package hk.ust.cse.comp107x.ligthsensor; import android.content.Context; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; public class MainActivity extends AppCompatActivity implements SensorEventListener{ private SensorManager mSensorManager; private Sensor mPressure; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get an instance of the sensor service, and use that to get an instance of // a particular sensor. mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE); mPressure = mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT); } @Override public final void onAccuracyChanged(Sensor sensor, int accuracy) { // Do something here if sensor accuracy changes. } @Override public final void onSensorChanged(SensorEvent event) { float light = event.values[0]; TextView v = (TextView)findViewById(R.id.textView); v.setText(Float.toString(light)); // Do something with this sensor data. } @Override protected void onResume() { // Register a listener for the sensor. super.onResume(); mSensorManager.registerListener(this, mPressure, SensorManager.SENSOR_DELAY_NORMAL); } @Override protected void onPause() { // Be sure to unregister the sensor when the activity pauses. super.onPause(); mSensorManager.unregisterListener(this); } }
新闻名称:详解android光线传感器lightsensor的使用-创新互联
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