Android 获取GPS和网络定位信息

来源：互联网发布：js显示鼠标轨迹编辑：程序博客网时间：2024/05/16 17:13

获取到位置服务后，同时请求网络和GPS定位更新。在没有GPS信号的时候，使用网络定位的位置信息（网络定位信息中无高程值）。

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:padding="10dp"    android:orientation="vertical">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="纬度："/>        <TextView            android:id="@+id/tv_latitude"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="经度："/>        <TextView            android:id="@+id/tv_longitude"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="服务商："/>        <TextView            android:id="@+id/tv_provider"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="准确性："/>        <TextView            android:id="@+id/tv_accuracy"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="高度："/>        <TextView            android:id="@+id/tv_altitude"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="方向角："/>        <TextView            android:id="@+id/tv_bearing"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="速度："/>        <TextView            android:id="@+id/tv_speed"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="上次上报时间："/>        <TextView            android:id="@+id/tv_last_time"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_margin="5dp">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"            android:text="最新上报时间："/>        <TextView            android:id="@+id/tv_new_time"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textSize="18dp"/>    </LinearLayout></LinearLayout>

MainActivity.java

import android.app.Activity;import android.content.Context;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.widget.TextView;import java.text.SimpleDateFormat;public class MainActivity extends Activity {    private LocationManager locationManager;    /**     * 前一次位置     */    private Location lastLocation;    private SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSZ");    private TextView tvLatitude;    private TextView tvLongitude;    private TextView tvProvider;    private TextView tvAccuracy;    private TextView tvAltitude;    private TextView tvBearing;    private TextView tvSpeed;    private TextView tvLastTime;    private TextView tvNewTime;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tvLatitude = (TextView) findViewById(R.id.tv_latitude);        tvLongitude = (TextView) findViewById(R.id.tv_longitude);        tvProvider = (TextView) findViewById(R.id.tv_provider);        tvAccuracy = (TextView) findViewById(R.id.tv_accuracy);        tvAltitude = (TextView) findViewById(R.id.tv_altitude);        tvBearing = (TextView) findViewById(R.id.tv_bearing);        tvSpeed = (TextView) findViewById(R.id.tv_speed);        tvLastTime = (TextView) findViewById(R.id.tv_last_time);        tvNewTime = (TextView) findViewById(R.id.tv_new_time);        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);    }    @Override    protected void onResume() {        super.onResume();        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, listener);        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener);    }    @Override    protected void onPause() {        super.onPause();        locationManager.removeUpdates(listener);    }    private LocationListener listener = new LocationListener() {        @Override        public void onLocationChanged(Location location) {            updateLocation(location);        }        @Override        public void onStatusChanged(String s, int i, Bundle bundle) {            updateLocation();        }        @Override        public void onProviderEnabled(String s) {            updateLocation();        }        @Override        public void onProviderDisabled(String s) {        }    };    private void updateLocation() {        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);        if (location == null) {            location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);        }        updateLocation(location);    }    private void updateLocation(Location location) {        if (location == null) {            return;        }        //判断新的位置是否可替换当前位置        if (isBetterLocation(location, lastLocation)) {            updateUI(location);            lastLocation = location;        }    }    /**     * 更新UI     * @param location     */    private void updateUI(final Location location) {        runOnUiThread(new Runnable() {            @Override            public void run() {                tvLatitude.setText(location.getLatitude() + "");                tvLongitude.setText(location.getLongitude() + "");                tvProvider.setText(location.getProvider());                tvAccuracy.setText(location.getAccuracy() + "");                tvAltitude.setText(location.getAltitude() + " 米");                tvBearing.setText(location.getBearing() + "");                tvSpeed.setText(location.getSpeed() + " 米/秒");                tvNewTime.setText(dateFormat.format(location.getTime()));                if (lastLocation != null) {                    tvLastTime.setText(dateFormat.format(lastLocation.getTime()));                }            }        });    }    /**     * 判断位置信息是否比当前的位置信息好     * @param location 新的位置     * @param currentBestLocation 当前的位置     */    protected boolean isBetterLocation(Location location,                                       Location currentBestLocation) {        if (currentBestLocation == null) {            return true;        }        // 检测GPS时间        long timeDelta = location.getTime() - currentBestLocation.getTime();        boolean isSignificantlyNewer = timeDelta > 2000;        boolean isSignificantlyOlder = timeDelta < -2000;        boolean isNewer = timeDelta > 0;//较新        // If it's been more than two minutes since the current location, use        // the new location        // because the user has likely moved        if (isSignificantlyNewer)        {            return true;        }        else if (isSignificantlyOlder)        {            return false;        }        // 检测GPS精度        int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());        boolean isLessAccurate = accuracyDelta > 0;        boolean isMoreAccurate = accuracyDelta < 0;        boolean isSignificantlyLessAccurate = accuracyDelta > 200;        // 检测提供者        boolean isFromSameProvider = isSameProvider(location.getProvider(),                currentBestLocation.getProvider());        // Determine location quality using a combination of timeliness and        // accuracy        if (isMoreAccurate)        {            return true;        }        else if (isNewer && !isLessAccurate)        {            return true;        }        else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider)        {            return true;        }        return false;    }    /**     * 判断是否为同一个提供者     * @param provider1     * @param provider2     * @return     */    private boolean isSameProvider(String provider1, String provider2)    {        if (provider1 == null)        {            return provider2 == null;        }        return provider1.equals(provider2);    }}

AndroidManifest.xml

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/><uses-permission android:name="android.permission.INTERNET"/>

参考：http://www.2cto.com/kf/201208/145033.html

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