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GPS定位貌似在室内用不了,今天自己弄了一个GPS定位小Demo,包括用户所在的经度、纬度、高度、方向、移动速度、精确度等信息。Android为GPS功能支持专门提供了一个LocationManager类,程序并不能直接创建LocationManager实例,而是通过Context的getSystemService()方法来获取。
例如:
//创建LocationManager对象 LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
下面的程序很简单,布局里面只用了一个EditText显示所有数据:
实例Demo:
MainActivity.java
package sn.qdj.localgpsdemo;
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.EditText;
/**
* GPS定位
* @author qingdujun
*
*/
public class MainActivity extends Activity {
LocationManager lm;
EditText show;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
show = (EditText)findViewById(R.id.show);
//创建LocationManager对象
lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
//从GPS获取最近的定位信息
Location lc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
//更新显示定位信息
updateView(lc);
//设置每3秒 获取一次GPS定位信息
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 8, new LocationListener() {
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// 当GPS LocationProvider可用时,更新定位
updateView(lm.getLastKnownLocation(provider));
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
updateView(null);
}
@Override
public void onLocationChanged(Location location) {
// 当GPS定位信息发生改变时,更新定位
updateView(location);
}
});
}
public void updateView(Location newLocation){
if (newLocation != null) {
StringBuilder sb = new StringBuilder();
sb.append("实时位置信息:\n");
sb.append("经度:\n");
sb.append(newLocation.getLongitude());
sb.append("\n纬度:");
sb.append(newLocation.getLatitude());
sb.append("\n高度:");
sb.append(newLocation.getAltitude());
sb.append("\n速度:");
sb.append(newLocation.getSpeed());
sb.append("\n方向:");
sb.append(newLocation.getBearing());
sb.append("\n定位精度:");
sb.append(newLocation.getAccuracy());
show.setText(sb.toString());
} else {
show.setText(null);
}
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="sn.qdj.localgpsdemo.MainActivity" >
<!-- 显示定位信息 -->
<EditText
android:id="@+id/show"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="" />
</RelativeLayout>GPS定位需要添加一个权限
<!-- GPS定位 -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>标签:
原文地址:http://blog.csdn.net/qingdujun/article/details/42563261