深入探讨 Android 传感器

核心提示：zViewA = (TextView) findViewById(R.id.zbox);xViewO = (TextView) findViewById(R.id.xboxo);yViewO = (TextView) findViewById(R.id.yboxo);zViewO = (TextView) findVi

zViewA = (TextView) findViewById(R.id.zbox);

xViewO = (TextView) findViewById(R.id.xboxo);

yViewO = (TextView) findViewById(R.id.yboxo);

zViewO = (TextView) findViewById(R.id.zboxo);

}

public void onSensorChanged(int sensor, float[] values) {

synchronized (this) {

Log.d(tag, "onSensorChanged: " + sensor + ", x: " +

values[0] + ", y: " + values[1] + ", z: " + values[2]);

if (sensor == SensorManager.SENSOR_ORIENTATION) {

xViewO.setText("Orientation X: " + values[0]);

yViewO.setText("Orientation Y: " + values[1]);

zViewO.setText("Orientation Z: " + values[2]);

}

if (sensor == SensorManager.SENSOR_ACCELEROMETER) {

xViewA.setText("Accel X: " + values[0]);

yViewA.setText("Accel Y: " + values[1]);

zViewA.setText("Accel Z: " + values[2]);

}

}

}

public void onAccuracyChanged(int sensor, int accuracy) {

Log.d(tag,"onAccuracyChanged: " + sensor + ", accuracy: " + accuracy);

}

@Override

protected void onResume() {

super.onResume();

// register this class as a listener for the orientation and accelerometer sensors

sm.registerListener(this,

SensorManager.SENSOR_ORIENTATION |SensorManager.SENSOR_ACCELEROMETER,

SensorManager.SENSOR_DELAY_NORMAL);

}

@Override

protected void onStop() {

// unregister listener

sm.unregisterListener(this);

super.onStop();

}

}

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编写应用程序必须基于常见的活动，因为它只是利用从传感器获取的数据更新屏幕。在设备可能在前台执行其他活动的应用程序中，将应用程序构建为服务可能更加合适。

该活动的 onCreate 方法可以引用 SensorManager，其中包含所有与传感器有关的函数。onCreate 方法还建立了对 6 个