anroid 利用方向传感器或者加速度传感器实现手机或者平板6个方向操作
最近项目里面要实现android设备6个方向操作远程设备移动，首先想到的是方向传感器，但是由于android设备的多样性，在测试过程中并不是所有的设备都有方向传感器，当没有方向传感器的话，就使用加速度传感器来实现，但是有一个缺点就是当水平移动的时候，就会有错误，其次就是项目中程序规定是横屏，然后手机和平板第一方向是不同的，手机默认竖屏正方向为0，现在横屏则方向为1，而平板默认就是横屏的，所以横屏正方向为0。
对于源码里面的
private float accDefaultX = 9999; private float accDefaultY = 9999; private float fBaseDefault = 9999;是用来确定初始方向的，程序是按照开启传感器的方向为水平方向，如果需要使用现实中的水平方向为设备的水平方向，则可以去掉
if (accDefaultX == fBaseDefault) {
accDefaultX = fValues[0];
}
if (accDefaultY == fBaseDefault) {
accDefaultY = fValues[1];
}
mx = fValues[0] - accDefaultX;
my = fValues[1] - accDefaultY;
源码如下：
package com.zhangjie.sensor;
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.util.Log;
import android.view.Display;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
public class OriginSensor extends Activity implements SensorEventListener{
public static final String TAG = "OriginSensor";
private SensorManager mSensorManager;
private Sensor aSensor;
private WindowManager mWindowManager;
private Display mDisplay;
private int orientation = 0;
private float accDefaultX = 9999;
private float accDefaultY = 9999;
private float fBaseDefault = 9999;
private double angle = 25;
private float[] fValues = null;
public static int Sensor_Type = -1;
float mx, my;
Button clickButton;
boolean iscleck = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
mDisplay = mWindowManager.getDefaultDisplay();
orientation = mDisplay.getOrientation();
mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
clickButton = new Button(this);
clickButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (!iscleck) {
EnableSensor();
iscleck = true;
}else {
DisableSensor();
iscleck = false;
}
}
});
setContentView(clickButton);
}
public void EnableSensor(){
if (Sensor_Type == -1) {
SelectSensorType();
if (Sensor_Type == 2) {
//屏蔽功能
}
}else {
aSensor = mSensorManager.getDefaultSensor(Sensor_Type);
mSensorManager.registerListener(this, aSensor,SensorManager.SENSOR_DELAY_UI);
}
accDefaultX = fBaseDefault; //这样做的原因为每次重启，将重启的位置作为水平位置
accDefaultY = fBaseDefault;
}
public void DisableSensor(){
mSensorManager.unregisterListener(this);
current_dir = 0;
}
/*
* 优先选择方向传感器，如果没有方向传感器则选择加速度传感器，如果没有加速度传感器则屏蔽重力感应功能
* Sensor_Type = 3 ：方向传感器
* Sensor_Type = 1 ：加速度传感器
* Sensor_Type = 2：屏蔽重力感应功能
*/
public void SelectSensorType(){
aSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
boolean ok = mSensorManager.registerListener(this, aSensor,SensorManager.SENSOR_DELAY_UI);
if (ok) {
Sensor_Type = Sensor.TYPE_ORIENTATION;
angle = 25;
Log.e(TAG, "启用方向传感器");
}else
{
aSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
boolean ok2 = mSensorManager.registerListener(this, aSensor,SensorManager.SENSOR_DELAY_UI);
if (ok2) {
Sensor_Type = Sensor.TYPE_ACCELEROMETER;
angle = 2.5;
Log.e(TAG, "启用加速度传感器");
}else {
Sensor_Type = 2;
Log.e(TAG, "屏蔽重力感应功能");
}
}
}
@Override
public void onSensorChanged(SensorEvent event) {
if (Sensor_Type == Sensor.TYPE_ACCELEROMETER) {
fValues = event.values;
if (accDefaultX == fBaseDefault) {
accDefaultX = fValues[0];
}
if (accDefaultY == fBaseDefault) {
accDefaultY = fValues[1];
}
mx = fValues[0] - accDefaultX;
my = fValues[1] - accDefaultY;
Log.e("test", "vlaue[0]: "+mx+ " value[1]:"+my);
if (orientation == 0) {
if (my < -2.5 && Math.abs(mx) < 0.5 && current_dir != 1) {
current_dir = 1; //前
Log.e("atest", orientation+ " "+current_dir);
}else if (my > 2.5 && Math.abs(mx) < 0.5 && current_dir != 2) {
current_dir = 2; //后
Log.e("atest", orientation+ " "+current_dir);
}else if (Math.abs(mx) < 0.5 && Math.abs(my) < 0.5 && current_dir != 3) {
current_dir = 3; //停止
Log.e("atest", orientation+ " "+current_dir);
}else if (mx > 1.5 && my <= 0.0 && current_dir != 4) {
current_dir = 4; //左转/左前转
Log.e("atest", orientation+ " "+current_dir);
}else if (mx < -1.5 && my <= 0.0 && current_dir != 5) {
current_dir = 5; //右转/右前转
Log.e("atest", orientation+ " "+current_dir);
}else if (mx > 1.5 && my > 1.5 && current_dir != 6) {
current_dir = 6; //左后转
Log.e("atest", orientation+ " "+current_dir);
}else if (mx < -1.5 && my > 1.5 && current_dir != 7) {
current_dir = 7; //右后转
Log.e("atest", orientation+ " "+current_dir);
}
}else if (orientation == 1) {
if (mx < -2.5 && Math.abs(my) < 0.5 && current_dir != 1) {
current_dir = 1; //前
Log.e("atest", orientation+ " "+current_dir);
}else if (mx > 2.5 && Math.abs(my) < 0.5 && current_dir != 2) {
current_dir = 2; //后
Log.e("atest", orientation+ " "+current_dir);
}else if (Math.abs(mx) < 0.5 && Math.abs(my) < 0.5 && current_dir != 3) {
current_dir = 3; //停止
Log.e("atest", orientation+ " "+current_dir);
}else if (mx <= 0.0 && my < -1.5 && current_dir != 4) {
current_dir = 4; //左转/左前转
Log.e("atest", orientation+ " "+current_dir);
}else if (mx <= 0.0 && my > 1.5 && current_dir != 5) {
current_dir = 5; //右转/右前转
Log.e("atest", orientation+ " "+current_dir);
}else if (mx > 1.5 && my < -1.5 && current_dir != 6) {
current_dir = 6; //左后转
Log.e("atest", orientation+ " "+current_dir);
}else if (mx > 1.5 && my > 1.5 && current_dir != 7) {
current_dir = 7; //右后转
Log.e("atest", orientation+ " "+current_dir);
}
}
}else if (Sensor_Type == Sensor.TYPE_ORIENTATION) {
if (orientation == 0) {
fValues = event.values;
Log.e("test", "vlaue[0]: "+fValues[0]+ " value[1]:"+fValues[1]+" value[2]:"+fValues[2]);
if (fValues[1] > angle && (Math.abs(fValues[2]) < 5) && current_dir != 1) {
current_dir = 1; //前
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] < -angle && (Math.abs(fValues[2]) < 5) && current_dir != 2) {
current_dir = 2; //后
Log.e("atest", orientation+ " "+current_dir);
}else if (Math.abs(fValues[1]) < 5 && Math.abs(fValues[2]) < 5 && current_dir != 3) {
current_dir = 3; //停止
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] > 0 && fValues[2] > 15 && current_dir != 4) {
current_dir = 4; //左转/左前转
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] > 0 && fValues[2] < -15 && current_dir != 5) {
current_dir = 5; //右转/右前转
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] < -15 && fValues[2] > 15 && current_dir != 6) {
current_dir = 6; //左后转
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] < -15 && fValues[2] < -15 && current_dir != 7) {
current_dir = 7; //右后转
Log.e("atest", orientation+ " "+current_dir);
}
}else if (orientation == 1) {
fValues = event.values;
Log.e("test_1", "vlaue[0]: "+fValues[0]+ " value[1]:"+fValues[1]+" value[2]:"+fValues[2]);
if (fValues[2] < -angle && (Math.abs(fValues[1]) < 5) && current_dir != 1) {
current_dir = 1; //前
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[2] > angle && (Math.abs(fValues[1]) < 5) && current_dir != 2) {
current_dir = 2; //后
Log.e("atest", orientation+ " "+current_dir);
}else if (Math.abs(fValues[1]) < 5 && Math.abs(fValues[2]) < 5 && current_dir != 3) {
current_dir = 3; //停止
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] > 15 && fValues[2] <= 5 && current_dir != 4) {
current_dir = 4; //左转/左前转
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] < -15 && fValues[2] <= 5 && current_dir != 5) {
current_dir = 5; //右转/右前转
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] > 15 && fValues[2] > 15 && current_dir != 6) {
current_dir = 6; //左后转
Log.e("atest", orientation+ " "+current_dir);
}else if (fValues[1] < -15 && fValues[2] > 15 && current_dir != 7) {
current_dir = 7; //右后转
Log.e("atest", orientation+ " "+current_dir);
}
}
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
@Override
protected void onDestroy() {
super.onDestroy();
}
public int current_dir = 0;
}