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我写了一个简单的活动来监听接近传感器(http://thecodeartist.blogspot.co.il/2011/01/proximity-sensor-on-android-gingerbread.html),我正在尝试测试它我的模拟器。该应用程序可在真实设备上运行(在 Nexus 4 上进行了检查)。

我一直在某处阅读,我应该修改 DDMS 中“位置控制”中的一些值以调用该警报(例如,https://stackoverflow.com/questions/15048559/can-i-test-proximity-alert- in-the-emulator),但我仍然不明白 - 位置与接近传感器有何关系,应该只提醒“远”或“近”?

非常感谢您的帮助,谢谢。

这是我的代码(通用且简单):

package com.example.proximitysensor;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity implements SensorEventListener {

    private SensorManager mSensorManager;

    private Sensor mProximitySensor;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
        mProximitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
    }

    protected void onResume()
    {
        super.onResume();
        mSensorManager.registerListener(this, mProximitySensor, SensorManager.SENSOR_DELAY_NORMAL);
    }

    @Override
    protected void onPause() {
        super.onPause();
        mSensorManager.unregisterListener(this);
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public void onAccuracyChanged(Sensor arg0, int arg1) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onSensorChanged(SensorEvent event) {

        if (event.values[0] == 0)
        {
            Toast.makeText(this, "near", Toast.LENGTH_LONG).show();
        }
        else
        {
            Toast.makeText(this, "far", Toast.LENGTH_LONG).show();
        }
    }

}
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