Question

这可以检测手机何时像图像一样移动？ android中的这个名字是什么？

有没有处理此类事件的事件？一年前，我看到一个带指南针的应用程序，它正在实时工作。

谢谢！

Answer 1

我希望此代码能够提供帮助

package com.exercise.AndroidSensorEventListener;

import java.util.List;

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.TextView;
import android.widget.Toast;

public class AndroidSensorEventListener extends Activity {
 private static SensorManager mySensorManager;
 private boolean sersorrunning;

   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);

       mySensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
       List<Sensor> mySensors = mySensorManager.getSensorList(Sensor.TYPE_ORIENTATION);

       if(mySensors.size() > 0){
        mySensorManager.registerListener(mySensorEventListener, mySensors.get(0), SensorManager.SENSOR_DELAY_NORMAL);
        sersorrunning = true;
        Toast.makeText(this, "Start ORIENTATION Sensor", Toast.LENGTH_LONG).show();
       }
       else{
        Toast.makeText(this, "No ORIENTATION Sensor", Toast.LENGTH_LONG).show();
        sersorrunning = false;
        finish();
       }

   }

   private SensorEventListener mySensorEventListener = new SensorEventListener() {

  @Override
  public void onSensorChanged(SensorEvent event) {
           System.out.println("Azimuth: " + String.valueOf(event.values[0]));
           System.out.println("Pitch: " + String.valueOf(event.values[1]));
           System.out.println("Roll: " + String.valueOf(event.values[2]));
  }

  @Override
  public void onAccuracyChanged(Sensor sensor, int accuracy) {
  }
 };

 @Override
 protected void onDestroy() {
  super.onDestroy();

  if(sersorrunning){
   mySensorManager.unregisterListener(mySensorEventListener);
   Toast.makeText(AndroidSensorEventListener.this, "unregisterListener", Toast.LENGTH_SHORT).show();
  }
 }
}

More examples here

Answer 2

如果您熟悉RxJava和Reactive Programming，则可以使用名为ReactiveSensors的开源库。它是来自Android SDK的SensorManager的包装器，允许您监视作为可观察流发出的传感器更改。

您可以通过以下方式使用该库：

将以下依赖项添加到build.gradle文件中：

dependencies {
  compile 'com.github.pwittchen:reactivesensors:0.1.2'
}

然后，您可以在代码中使用库：

new ReactiveSensors(this).observeSensor(Sensor.TYPE_ORIENTATION)
    .subscribeOn(Schedulers.computation())
    .filter(ReactiveSensorEvent.filterSensorChanged())
    .observeOn(AndroidSchedulers.mainThread())
    .subscribe(new Action1<ReactiveSensorEvent>() {
      @Override public void call(ReactiveSensorEvent reactiveSensorEvent) {
        SensorEvent event = reactiveSensorEvent.getSensorEvent();

        float x = event.values[0];
        float y = event.values[1];
        float z = event.values[2];

        String format = "orientation sensor readings:\n x = %f\n y = %f\n z = %f";
        String message = String.format(format, x, y, z);
        tvSensor.setText(message);
      }
    });

在您的情况下，您可以使用Sensor.TYPE_ORIENTATION，但它适用于Android设备上提供的各种传感器。

完整的工作示例代码位于：https://github.com/pwittchen/ReactiveSensors/blob/master/app/src/main/java/com/github/pwittchen/reactivesensors/app/samples/OrientationActivity.java

有关库的详细说明，源代码和示例工作应用程序，请访问：https://github.com/pwittchen/ReactiveSensors

Answer 3

您需要像SensorListener

这样的东西

private final SensorListener sl = new SensorListener() {
    public void onSensorChanged(int sensor, float[] values) {
    }

    public void onAccuracyChanged(int sensor, int accuracy) {
    }
};

然后注册：

// Locate the SensorManager using Activity.getSystemService
SensorManager sm;
sm = (SensorManager) getSystemService(SENSOR_SERVICE);

// Register your SensorListener
sm.registerListener(sl, SensorManager.SENSOR_ORIENTATION SensorManager.SENSOR_DELAY_NORMAL);

除此之外，您将获得所需的信息......

参考：

Answer 4

看一下运动传感器：http://developer.android.com/guide/topics/sensors/sensors_motion.html

检测手机旋转（移动）

4 个答案: