返回信息流按照书上的代码敲的 不知道为什么获取定位信息失败(就是location == null了)，且在真机运行商DDMS有一个Error
Manifest 应该没有错
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
LogCat 是
03-24 16:32:44.862: E/copybit(9966): Error opening frame buffer errno=13 (Permission denied)
代码：
package com.cinrry.mapdemo;
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationProvider;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
public class MainActivity extends Activity {
private LocationListener mLocationListener = new LocationListener(){
public void onLocationChanged(Location location) {
updateWithNewLocation(location);
}
public void onProviderDisabled(String provider){
updateWithNewLocation(null);
}
public void onProviderEnabled(String provider){ }
public void onStatusChanged(String provider, int status, Bundle extras) {
switch (status) {
case LocationProvider.AVAILABLE:
Log.v("Status", "AVAILABLE");
break;
case LocationProvider.OUT_OF_SERVICE:
Log.v("Status", "OUT_OF_SERVICE");
break;
case LocationProvider.TEMPORARILY_UNAVAILABLE:
Log.v("Status", "TEMPORARILY_UNAVAILABLE");
break;
}
}
};
private void updateWithNewLocation(Location location) {
String latLongString;
TextView myLocationText = (TextView)findViewById(R.id.myLocationText);
if (location != null) {
double lat = location.getLatitude();
double lng = location.getLongitude();
latLongString = "纬度:" + String.valueOf(lat) + "\n经度:" + String.valueOf(lng);
} else {
latLongString = "获取地理信息失败";
}
myLocationText.setText("当前坐标位置是:\n" + latLongString);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocationManager locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mLocationListener);
//Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
//double latitude = location.getLatitude(); //经度
//double longitude = location.getLongitude(); //纬度
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
这是一条镜像帖。来源：北邮人论坛 / soft-design / #47034同步于 2016/3/24
SoftDesign机器人发帖
菜鸟求助一个关于Android定位的问题
cinrry
2016/3/24镜像同步0 回复
订阅后，新回复会通过你的通知中心匿名送达。
0 条回复
暂无回复 · 你可以订阅本帖等待新回复。