GPS一直无法启动的问题
做了一个很简单的demo。打开GPS，通过模拟器发送坐标，使地图以接受到的坐标为中心。
但是GPS一直无法启动，大家能帮我看看，在你们的电脑上可以启动吗？
这是运行在2.2上面的。
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <com.google.android.maps.MapView android:id="@+id/myMapView" android:layout_width="fill_parent" android:layout_height="fill_parent" android:apiKey="0Ao5sdg8IRBiavp_y3M240_3joxmkzOSM0ENQuw" android:clickable="true" /></LinearLayout>
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.chenjb.maptest" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <uses-library android:name="com.google.android.maps" /> <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest>
package com.chenjb.maptest;import com.google.android.maps.GeoPoint;import com.google.android.maps.MapActivity;import com.google.android.maps.MapController;import com.google.android.maps.MapView;import android.content.Context;import android.location.Criteria;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;public class MainActivity extends MapActivity { GeoPoint centerGeoPoint = null; MapController mc; LocationManager locMngr; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 初始化地图 final MapView mv = (MapView) findViewById(R.id.myMapView); mv.setBuiltInZoomControls(true);// 设置地图上显示缩放控制条 mc = mv.getController();// 获得MapView的地图控制器 mc.setZoom(14);// 设置地图缩放比例 locMngr = (LocationManager) getSystemService(Context.LOCATION_SERVICE); Criteria criteria = new Criteria(); criteria.setAccuracy(Criteria.ACCURACY_FINE);// 高精度 criteria.setAltitudeRequired(false);// 不要求海拔 criteria.setBearingRequired(false);// 不要求方位 criteria.setCostAllowed(true);// 允许有花费 criteria.setPowerRequirement(Criteria.POWER_LOW);// 低功耗 // 从可用的位置提供器中，匹配以上标准的最佳提供器 String provider = locMngr.getBestProvider(criteria, true); System.out.println(provider);// // 获得最后一次变化的位置// Location location = locMngr.getLastKnownLocation(provider);// if (location == null) {// System.out.println("location为null");// } else {// System.out// .println(location.getLatitude() + location.getLongitude());// } // 监听位置变化，2秒一次，距离2米以上 locMngr.requestLocationUpdates(provider, 2000, 2, locationListener); } private final LocationListener locationListener = new LocationListener() { @Override public void onStatusChanged(String provider, int status, Bundle extras) { } @Override public void onProviderEnabled(String provider) { } @Override public void onProviderDisabled(String provider) { } @Override public void onLocationChanged(Location location) { GeoPoint gp = getGeoByLocation(location); mc.animateTo(gp); } }; // 通过Location获取GeoPoint public GeoPoint getGeoByLocation(Location location) { GeoPoint gp = null; double geoLatitude = location.getLatitude() * 1E6; double geoLongitude = location.getLongitude() * 1E6; gp = new GeoPoint((int) geoLatitude, (int) geoLongitude); return gp; } @Override protected boolean isRouteDisplayed() { return false; }}