下面提到的代码在 samasung Galaxy s(GB) 上完美运行，但我没有在 SE neo v(ics) 和 Tipo(ics) 上工作。这是索尼问题或 ics 问题。当启动应用程序启动并立即显示吐司“无光传感器！退出 -”。
import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
public class LightsenseActivity extends Activity {
ProgressBar lightMeter;
TextView textMax, textReading;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
lightMeter = (ProgressBar)findViewById(R.id.lightmeter);
textMax = (TextView)findViewById(R.id.max);
textReading = (TextView)findViewById(R.id.reading);
SensorManager sensorManager
= (SensorManager)getSystemService(Context.SENSOR_SERVICE);
Sensor lightSensor
= sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);
if (lightSensor == null){
Toast.makeText(LightsenseActivity.this,
"No Light Sensor! quit-",
Toast.LENGTH_SHORT).show();
}else{
float max = lightSensor.getMaximumRange();
lightMeter.setMax((int)max);
textMax.setText("Max Reading: " + String.valueOf(max));
sensorManager.registerListener(lightSensorEventListener,
lightSensor,
SensorManager.SENSOR_DELAY_NORMAL);
}
}
SensorEventListener lightSensorEventListener
= new SensorEventListener(){
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
@Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
//if(event.sensor.getType()==Sensor.TYPE_LIGHT){
float currentReading = event.values[0];
{ lightMeter.setProgress((int)currentReading);
textReading.setText("Current Reading: " + String.valueOf(currentReading));
}
}
};
}