如何替换android 4.0.3的type_orientation（已弃用）？

android eclipse java android-sensors

2022-09-01 21:17:36

你好，我想使用该类型，但它已被弃用为android 4.0.3 。我将其用于增强现实。我试图在网上找到，但没有成功。我的应用程序工作正常，但我里面的文字留在同一个地方！这是我的代码：type_orientation

 @Override
    protected void onStart() {      
        super.onStart();
        sensorMngr = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        sensorLstr = createListener();
        sensorMngr.registerListener(sensorLstr, sensorMngr.getDefaultSensor(Sensor.TYPE_ORIENTATION), SensorManager.SENSOR_DELAY_UI);
    }

    @Override
    protected void onStop() {       
        super.onStop();
        sensorMngr = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        sensorMngr.unregisterListener(sensorLstr, sensorMngr.getDefaultSensor(Sensor.TYPE_ORIENTATION));        
    }

一切都很好，只是这个，我已经看了 http://developer.android.com/reference/android/hardware/Sensor.html，但我不能理解（我是法国人，我的英语不是很完美...）非常感谢您的帮助!!!

答案 1

下面是指向包含解决方案的博客的链接。从本质上讲，您可以停止使用方向传感器，而是同时使用磁场传感器和加速度计传感器来获得等效的功能。这是更多的工作，但它确实允许您继续使用回调来处理方向更改。

编辑：由于原始站点不再可用，因此以下是以前托管在那里的代码示例：

package com.samplecompass;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.View;

public class CompassActivity extends Activity implements SensorEventListener {

  Float azimut;  // View to draw a compass

  public class CustomDrawableView extends View {
    Paint paint = new Paint();
    public CustomDrawableView(Context context) {
      super(context);
      paint.setColor(0xff00ff00);
      paint.setStyle(Style.STROKE);
      paint.setStrokeWidth(2);
      paint.setAntiAlias(true);
    };

    protected void onDraw(Canvas canvas) {
      int width = getWidth();
      int height = getHeight();
      int centerx = width/2;
      int centery = height/2;
      canvas.drawLine(centerx, 0, centerx, height, paint);
      canvas.drawLine(0, centery, width, centery, paint);
      // Rotate the canvas with the azimut      
      if (azimut != null)
        canvas.rotate(-azimut*360/(2*3.14159f), centerx, centery);
      paint.setColor(0xff0000ff);
      canvas.drawLine(centerx, -1000, centerx, +1000, paint);
      canvas.drawLine(-1000, centery, 1000, centery, paint);
      canvas.drawText("N", centerx+5, centery-10, paint);
      canvas.drawText("S", centerx-10, centery+15, paint);
      paint.setColor(0xff00ff00);
    }
  }

  CustomDrawableView mCustomDrawableView;
  private SensorManager mSensorManager;
  Sensor accelerometer;
  Sensor magnetometer;

  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mCustomDrawableView = new CustomDrawableView(this);
    setContentView(mCustomDrawableView);    // Register the sensor listeners
    mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
      accelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
    magnetometer = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
  }

  protected void onResume() {
    super.onResume();
    mSensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_UI);
    mSensorManager.registerListener(this, magnetometer, SensorManager.SENSOR_DELAY_UI);
  }

  protected void onPause() {
    super.onPause();
    mSensorManager.unregisterListener(this);
  }

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

  float[] mGravity;
  float[] mGeomagnetic;
  public void onSensorChanged(SensorEvent event) {
    if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER)
      mGravity = event.values;
    if (event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD)
      mGeomagnetic = event.values;
    if (mGravity != null && mGeomagnetic != null) {
      float R[] = new float[9];
      float I[] = new float[9];
      boolean success = SensorManager.getRotationMatrix(R, I, mGravity, mGeomagnetic);
      if (success) {
        float orientation[] = new float[3];
        SensorManager.getOrientation(R, orientation);
        azimut = orientation[0]; // orientation contains: azimut, pitch and roll
      }
    }
    mCustomDrawableView.invalidate();
  }
}

答案 2