android 检查位置服务是否开启,android如何检查位置服务是否已经启用？_android_开发99编程知识库...

可以使用下面的代碼檢查 GPS 提供程序和網路提供程序是否已經啟用或者未啟用。LocationManager lm = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);

boolean gps_enabled = false;

boolean network_enabled = false;

try {

gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);

} catch(Exception ex) {}

try {

network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

} catch(Exception ex) {}

if(!gps_enabled &&!network_enabled) {

//notify user

AlertDialog.Builder dialog = new AlertDialog.Builder(context);

dialog.setMessage(context.getResources().getString(R.string.gps_network_not_enabled));

dialog.setPositiveButton(context.getResources().getString(R.string.open_location_settings), new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface paramDialogInterface, int paramInt) {

//TODO Auto-generated method stub

Intent myIntent = new Intent( Settings.ACTION_LOCATION_SOURCE_SETTINGS);

context.startActivity(myIntent);

//get gps

}

});

dialog.setNegativeButton(context.getString(R.string.Cancel), new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface paramDialogInterface, int paramInt) {

//TODO Auto-generated method stub

}

});

dialog.show();

}

在清單文件中，你將需要添加以下許可權