android加速度传感器怎么使用 android加速度传感器怎么使用
android\u52a0\u901f\u5ea6\u4f20\u611f\u5668\u600e\u4e48\u4f7f\u7528\u4f7f\u7528\u52a0\u901f\u5ea6\u4f20\u611f\u5668\u4e0e\u5176\u4ed6\u4f20\u611f\u5668\u7684\u65b9\u6cd5\u5927\u81f4\u76f8\u540c\uff0c\u901a\u8fc7\u8c03\u7528\u7cfb\u7edfAPI\u5c31\u53ef\u4ee5\u5b9e\u73b0\u3002\u5206\u4e3a\u4ee5\u4e0b\u51e0\u6b65\uff1a
1.\u83b7\u53d6SensorManager
2.\u4f7f\u7528SensorManager\u83b7\u53d6\u52a0\u901f\u5ea6\u4f20\u611f\u5668
3.\u521b\u5efa\u81ea\u5b9a\u4e49\u7684\u4f20\u611f\u5668\u76d1\u542c\u51fd\u6570\uff0c\u5e76\u6ce8\u518c
4.\u76f8\u5bf9\u5e94\u7684\uff0c\u5728\u5408\u9002\u4f4d\u7f6e\u5b9e\u73b0\u6ce8\u9500\u76d1\u542c\u5668\u7684\u8c03\u7528
\u7b80\u5355\u7684\u4ee3\u7801\u5982\u4e0b\uff1a
public class MainActivity extends Activity {
private static final String TAG = "SensorTest";
private SensorManager mSensorManager;
private Sensor mAccelerometer;
private TestSensorListener mSensorListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
// \u521d\u59cb\u5316\u4f20\u611f\u5668
mSensorListener = new TestSensorListener();
mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
}
@Override
protected void onResume() {
super.onResume();
// \u6ce8\u518c\u4f20\u611f\u5668\u76d1\u542c\u51fd\u6570
mSensorManager.registerListener(mSensorListener, mAccelerometer, SensorManager.SENSOR_DELAY_UI);
}
@Override
protected void onPause() {
super.onPause();
// \u6ce8\u9500\u76d1\u542c\u51fd\u6570
mSensorManager.unregisterListener(mSensorListener);
}
private void initViews() {
mSensorInfoA = (TextView) findViewById(R.id.sensor_info_a);
}
class TestSensorListener implements SensorEventListener {
@Override
public void onSensorChanged(SensorEvent event) {
// \u8bfb\u53d6\u52a0\u901f\u5ea6\u4f20\u611f\u5668\u6570\u503c\uff0cvalues\u6570\u7ec40,1,2\u5206\u522b\u5bf9\u5e94x,y,z\u8f74\u7684\u52a0\u901f\u5ea6
Log.i(TAG, "onSensorChanged: " + event.values[0] + ", " + event.values[1] + ", " + event.values[2]);
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
Log.i(TAG, "onAccuracyChanged");
}
}
}
\u4e00 \u4ecb\u7ecdSensor\u7c7b
SDK\u53ea\u6709\u4e00\u53e5\u4ecb\u7ecd\u201cClass representing a sensor. Use getSensorList(int) to get the list of available Sensors.\u201d\uff0c\u8868\u793a\u4e00\u4e2a\u611f\u5e94\u5668\u7684\u7c7b\uff0c\u53ef\u4ee5\u4f7f\u7528getSensorList\u65b9\u6cd5\uff08\u6b64\u65b9\u6cd5\u5c5e\u4e8e\u63a5\u4e0b\u6765\u8981\u8bb2\u7684SensorManager\uff09\u83b7\u5f97\u6240\u6709\u53ef\u7528\u7684\u611f\u5e94\u5668\uff0c\u8be5\u65b9\u6cd5\u8fd4\u56de\u7684\u662f\u4e00\u4e2aList
\u4e0b\u9762\u7684\u5217\u8868\u663e\u793a\u4e86\uff0cSensor\u6240\u63d0\u4f9b\u7684\u6240\u6709\u670d\u52a1
----------------------------------------------------------------------------------------------------------------------------------------------------------
Constants
int TYPE_ACCELEROMETER A constant describing an accelerometer sensor type. //\u4e09\u8f74\u52a0\u901f\u5ea6\u611f\u5e94\u5668 \u8fd4\u56de\u4e09\u4e2a\u5750\u6807\u8f74\u7684\u52a0\u901f\u5ea6 \u5355\u4f4dm/s2
int TYPE_ALL A constant describing all sensor types. //\u7528\u4e8e\u5217\u51fa\u6240\u6709\u611f\u5e94\u5668
int TYPE_GRAVITY A constant describing a gravity sensor type. //\u91cd\u529b\u611f\u5e94\u5668
int TYPE_GYROSCOPE A constant describing a gyroscope sensor type //\u9640\u87ba\u4eea \u53ef\u5224\u65ad\u65b9\u5411 \u8fd4\u56de\u4e09\u4e2a\u5750\u6807\u8f74\u4e0a\u7684\u89d2\u5ea6
int TYPE_LIGHT A constant describing an light sensor type. //\u5149\u7ebf\u611f\u5e94\u5668 \u5355\u4f4d lux \u52d2\u514b\u65af
int TYPE_LINEAR_ACCELERATION A constant describing a linear acceleration sensor type. //\u7ebf\u6027\u52a0\u901f\u5ea6
int TYPE_MAGNETIC_FIELD A constant describing a magnetic field sensor type. //\u78c1\u573a\u611f\u5e94 \u8fd4\u56de\u4e09\u4e2a\u5750\u6807\u8f74\u7684\u6570\u503c \u5fae\u7279\u65af\u62c9
int TYPE_ORIENTATION This constant is deprecated. use SensorManager.getOrientation() instead. //\u65b9\u5411\u611f\u5e94\u5668 \u5df2\u8fc7\u65f6 \u53ef\u4ee5\u4f7f\u7528\u65b9\u6cd5\u83b7\u5f97
int TYPE_PRESSURE A constant describing a pressure sensor type //\u538b\u529b\u611f\u5e94\u5668 \u5355\u4f4d \u5343\u5e15\u65af\u5361
int TYPE_PROXIMITY A constant describing an proximity sensor type. //\u8ddd\u79bb\u4f20\u611f\u5668
int TYPE_ROTATION_VECTOR A constant describing a rotation vector sensor type. //\u7ffb\u8f6c\u4f20\u611f\u5668
int TYPE_TEMPERATURE A constant describing a temperature sensor type //\u6e29\u5ea6\u4f20\u611f\u5668 \u5355\u4f4d \u6444\u6c0f\u5ea6
----------------------------------------------------------------------------------------------------------------------------------------------------------
\u6b64\u7c7b\u4e2d\u5305\u542b\u7684\u65b9\u6cd5\u90fd\u662fget\u578b\u7684 \u7528\u6765\u83b7\u53d6\u6240\u9009sensor\u7684\u4e00\u4e9b\u5c5e\u6027\uff0csensor\u7c7b\u4e00\u822c\u4e0d\u9700\u8981new\u800c\u662f\u901a\u8fc7SensorManager\u7684\u65b9\u6cd5\u83b7\u5f97
\u4e8c \u4ecb\u7ecdSensorManager\u7c7b
SDK\u89e3\u91ca\uff1a\u201cSensorManager lets you access the device's sensors. Get an instance of this class by calling Context.getSystemService() with the argument SENSOR_SERVICE.
Always make sure to disable sensors you don't need, especially when your activity is paused. Failing to do so can drain the battery in just a few hours. Note that the system will not disable sensors automatically when the screen turns off. \u201d
SensorManager \u5141\u8bb8\u4f60\u8bbf\u95ee\u8bbe\u5907\u7684\u611f\u5e94\u5668\u3002\u901a\u8fc7\u4f20\u5165\u53c2\u6570SENSOR_SERVICE\u53c2\u6570\u8c03\u7528Context.getSystemService\u65b9\u6cd5\u53ef\u4ee5\u83b7\u5f97\u4e00\u4e2asensor\u7684\u5b9e\u4f8b\u3002\u6c38\u8fdc\u8bb0\u5f97\u786e\u4fdd\u5f53\u4f60\u4e0d\u9700\u8981\u7684\u65f6\u5019\uff0c\u7279\u522b\u662fActivity\u6682\u5b9a\u7684\u65f6\u5019\uff0c\u8981\u5173\u95ed\u611f\u5e94\u5668\u3002\u5ffd\u7565\u8fd9\u4e00\u70b9\u80af\u80fd\u5bfc\u81f4\u51e0\u4e2a\u5c0f\u65f6\u5c31\u8017\u5c3d\u7535\u6c60\uff0c\u6ce8\u610f\u5f53\u5c4f\u5e55\u5173\u95ed\u65f6\uff0c\u7cfb\u7edf\u4e0d\u4f1a\u81ea\u52a8\u5173\u95ed\u611f\u5e94\u5668\u3002
\u4e09 \u5e38\u7528\u7684\u611f\u5e94\u5668
\uff081\uff09 \u52a0\u901f\u5ea6\u611f\u5e94\u5668
\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u611f\u5e94\u5668\u83b7\u5f97\u4e09\u4e2a\u6d6e\u70b9\u578b
x-axis
y-axis
z-axis
X Y Z\u5206\u522b\u5bf9\u5e94values[0]\u5230[2]
X\u8868\u793a\u5de6\u53f3\u79fb\u52a8\u7684\u52a0\u901f\u5ea6
Y\u8868\u793a\u524d\u540e\u79fb\u52a8\u7684\u52a0\u901f\u5ea6
Z\u8868\u793a\u5782\u76f4\u65b9\u5411\u7684\u52a0\u901f\u5ea6
\u4e0b\u9762\u5148\u770b\u4e00\u4e2a\u57fa\u672c\u7684\u83b7\u53d6\u52a0\u901f\u7684demo\uff0c\u5e0c\u671b\u5927\u5bb6\u597d\u597d\u6ce8\u610f\u4ee3\u7801\u4e2d\u7684\u6ce8\u91ca
\u505a\u7684\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u5728\u5c4f\u5e55\u4e0a\u663e\u793a\u4e09\u4e2a\u65b9\u5411\u4e0a\u52a0\u901f\u5ea6\u7684\u503c
关键词：加速度计，传感器驱动，Android
一部智能手机或便携设备应具有Wi-Fi 和互联网功能，能够运行应用软件等诸多特征，而且一定会具有内置传感器。高端智能手机可能集成接近传感器，环境光传感器，3 轴加速度计，以及磁力计等多种传感器。 Android 2.3 添加了一些支持多种新型传感器的API，包括陀螺仪、旋转向量、线性加速度、重力和气压传感器等。应用软件可以使用这些新型传感器，将它们组合起来，就可以实现高精确度的高级运动检测功能。
3 轴加速度计或低g 值传感器是Android API 支持的传感器之一，具有特定的坐标系统，可以给应用程序提供标准的接口数据。坐标空间的定义与手机屏幕的默认方向有关
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