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因此，我有一個用Android Eclipse編寫的應用程序，該應用程序通過固定標記顯示地圖，然後使用旋轉矢量傳感器根據旋轉變化移動。當我在設備上運行它時，手機傾斜時屏幕不會移動。我嘗試了一切，甚至讓我的教授看着它。他在代碼中找不到問題。最後，我們在他的設備上運行它，它完美運行！我有一個Moto G，我想知道是否有人爲什麼這個代碼適用於其他Android設備，但不是我的。以下是該項目的代碼。Android應用程序中的旋轉矢量傳感器無法在我的Moto上工作G
package com.example.flymap_awc;
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.Menu;
import android.util.Log;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
public class MainActivity extends Activity implements SensorEventListener {
static final LatLng HAMBURG = new LatLng(53.558, 9.927);
static final LatLng KIEL = new LatLng(53.551, 9.993);
private GoogleMap map;
private SensorManager mSensorManager;
private double oldx = 0, oldy=0, oldz = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG)
.title("Hamburg"));
Marker kiel = map.addMarker(new MarkerOptions()
.position(KIEL)
.title("Kiel")
.snippet("Kiel is cool")
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.ic_launcher)));
// Move the camera instantly to hamburg with a zoom of 15.
map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onAccuracyChanged(Sensor arg0, int arg1) {
// TODO Auto-generated method stub
}
@Override
public void onSensorChanged(SensorEvent event) {
if(event.sensor.getType() == Sensor.TYPE_ROTATION_VECTOR)
{
if(oldx==0 && oldy ==0 && oldz ==0){
// if this is the first run (oldx/y/z=0, get the initial orientation
oldx = event.values[0];
oldy = event.values[1];
oldz =event.values[2];
//set oldx to event.values[0], etc.
}
// get change in rotation amount store as dx,dy,dz
double dx = oldx - event.values[0];
double dy = oldy - event.values[1];
double dz = oldz - event.values[2];
double dTotal = Math.abs(dx) + Math.abs(dy) + Math.abs(dz);
if (dTotal > 0.05)
{
double lat = map.getCameraPosition().target.latitude;
double lng = map.getCameraPosition().target.longitude;
lat +=dx;
lng -=dy;
Log.println(100,"100","lat, lng, dx, dy" + lat + lng+dx+dy);
LatLng loc = new LatLng(lat, lng);
map.moveCamera(CameraUpdateFactory.newLatLng(loc));
oldx = event.values[0];
oldy = event.values[1];
oldz = event.values[2];
}
//filter out noise where Math.abs(dx) + Math.abs(dy)+ Math.abs(dz) > 0.05
// get current lat lng
//that my map camera is point at (or targeting)
// add to the lat and lng based on dx dy
//may want to compensate for zoom inverse proportionally
//may have to do lng -=dy to move intuitively
//move camera using camerupdatefactory to the new LatLng(lat,lng)
// update old oldy oldz
}
}
protected void onResume(){
super.onResume();
// register this class as a listener for the orientation sensor
mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR),
SensorManager.SENSOR_DELAY_NORMAL);
}
protected void onPause(){
super.onPause();
//unregister listener
mSensorManager.unregisterListener(this);
}
}
這裏是清單代碼
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.flymap_awc"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="19"
android:targetSdkVersion="19" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- The following two permissions are not required to use
Google Maps Android API v2, but are recommended. -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
>
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name="com.example.flymap_awc.MainActivity"
android:label="@string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyDC4pK6_RmiSsDoWFAEmTUO2DRynTR0lik"/>
</application>
</manifest>
我不確定;我有一個沒有陀螺儀的京瓷Hydro邊緣，但有一個旋轉矢量傳感器。 – ethanwu10