如何在安卓4.0.3中替换type_orientation (已被弃用)？
如何在安卓4.0.3中替换type_orientation (已被弃用)？
提问于 2013-02-21 21:43:03
您好，我想使用类型type_orientation，但它在Android4.0.3中已被弃用。我将其用于增强现实。我试着在网上找，但没有成功。我的应用程序可以工作，但我的文本留在相同的地方！下面是我的代码：
@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));
}一切都很好就是这样，我已经在http://developer.android.com/reference/android/hardware/Sensor.html上看过了，但是我不能理解(我是法国人，我的英语不是很完美……)非常感谢您的帮助！
回答 1
Stack Overflow用户
发布于 2013-07-05 04:53:11
提供解决方案的博客的Here's a link。基本上，您停止使用方向传感器，并使用磁场传感器和加速度计传感器，以获得相同的功能。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，下面是以前托管在该站点的代码示例：
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();
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/15003787
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