下面提到的代码完全适用于samasung galaxy s(GB),但我没有在SE neo v(ics)和tipo(ics)上工作。这是一个索尼问题或ics问题。当启动应用程序启动并立即显示吐司“没有光传感器!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));
}
}
};
}
答案 0 :(得分:1)
在gsmarena(http://www.gsmarena.com/sony_ericsson_xperia_neo_v-4122.php)和索尼Xperia Tipo(http://www.gsmarena.com/sony_xperia_tipo-4718)上为SE Neo V列出的唯一传感器.php)是加速度计,接近度和指南针。
光传感器绝不是必需的传感器,因为它通常用于调节屏幕亮度。来自Android 4.0兼容性文档:
7.3.7。光度计 设备实现可以包括光度计(即环境光传感器)。
您的应用必须处理没有光线传感器的情况,或者您应该将<uses-feature>
android.hardware.sensor.light
添加到AndroidManifest.xml。