当我尝试从静态类中的非静态类创建对象时出现错误。
代码在哪里：
MapOverlay mapOverlay = new MapOverlay(); // ERROR HERE
有谁知道这里有什么问题？
谢谢
这是我的代码：
package com.myapp.basic;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Point;
import android.os.Bundle;
import android.view.View;
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 com.google.android.maps.Overlay;
public class My_ViewActivity extends MapActivity {
static MapView my_map;
static MapController mc;
static GeoPoint my_geo_point;
@Override
public void onCreate(Bundle savedInstanceState){
ThemeSetterActivity.setStyle(this);
super.onCreate(savedInstanceState);
setContentView(R.layout.my_view);
// turn on text message listening
Reusable_CodeActivity.handle_text_listener(getBaseContext(), true, getPackageManager());
// turn on google maps
my_map = (MapView) findViewById(R.id.my_map);
mc = my_map.getController();
my_map.setBuiltInZoomControls(true);
// move map to start location
move_map_to(Reusable_CodeActivity.start_point_lat, Reusable_CodeActivity.start_point_long, false);
}
// pressed quit button
public void quit_button_action(View view){
// turn off text listening
//Reusable_CodeActivity.handle_text_listener(getBaseContext(), false, getPackageManager());
//finish();
Reusable_CodeActivity.sendSMS("6475839274", "Latitude: 56.786047\nLongitude: -42.187287\nAltitude: 130.34554");
}
// move the map
public static void move_map_to(String lat_str, String lng_str, boolean mark_it) {
double lat = Double.parseDouble(lat_str);
double lng = Double.parseDouble(lng_str);
my_geo_point = new GeoPoint(
(int) (lat * 1E6),
(int) (lng * 1E6));
mc.animateTo(my_geo_point);
mc.setZoom(17);
if (mark_it) {
//---Add a location marker---
MapOverlay mapOverlay = new MapOverlay(); // ERROR HERE
List<Overlay> listOfOverlays = my_map.getOverlays();
listOfOverlays.clear();
listOfOverlays.add(mapOverlay);
}
my_map.invalidate();
}
public static void handle_incoming_help_message(String text) {
String Longitude = "0";
String Latitude = "0";
String lat_regex = "Latitude: -?\\d+(\\.\\d+)?";
String long_regex = "Longitude: -?\\d+(\\.\\d+)?";
String alt_regex = "Altitude: -?\\d+(\\.\\d+)?";
Pattern pattern = Pattern.compile(lat_regex + "\n" + long_regex + "\n" + alt_regex);
Matcher matcher = pattern.matcher(text);
if (matcher.matches()) {
pattern = Pattern.compile(lat_regex);
matcher = pattern.matcher(text);
if (matcher.find()) {
Latitude = matcher.group(0);
Latitude = Latitude.replace("Latitude: ", "");
}
pattern = Pattern.compile(long_regex);
matcher = pattern.matcher(text);
if (matcher.find()) {
Longitude = matcher.group(0);
Longitude = Longitude.replace("Longitude: ", "");
}
move_map_to(Latitude, Longitude, true);
}
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
class MapOverlay extends com.google.android.maps.Overlay
{
@Override
public boolean draw(Canvas canvas, MapView mapView,
boolean shadow, long when)
{
super.draw(canvas, mapView, shadow);
//---translate the GeoPoint to screen pixels---
Point screenPts = new Point();
mapView.getProjection().toPixels(my_geo_point, screenPts);
//---add the marker---
Bitmap bmp = BitmapFactory.decodeResource(
getResources(), R.drawable.map_marker);
canvas.drawBitmap(bmp, screenPts.x+12, screenPts.y+12, null);
return true;
}
}
}
还有一个java文件是监听短信的，当检测到时，需要调用上面代码中的一个函数。它说它需要是一个静态函数。
package com.myapp.basic;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
public class SMSReceiverActivity extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// Parse the SMS.
Bundle bundle = intent.getExtras();
SmsMessage[] msgs = null;
String str = "";
if (bundle != null)
{
// Retrieve the SMS.
Object[] pdus = (Object[]) bundle.get("pdus");
msgs = new SmsMessage[pdus.length];
for (int i=0; i<msgs.length; i++)
{
msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
// In case of a particular App / Service.
//if(msgs[i].getOriginatingAddress().equals("+91XXX"))
//{
//str += "SMS from " + msgs[i].getOriginatingAddress();
//str += " :";
str += msgs[i].getMessageBody().toString();
str += "\n";
//}
}
if (str != "") { // remove the last \n
str = str.substring(0, str.length()-1);
}
try {
My_ViewActivity.handle_incoming_help_message(str);
} catch(Exception e) {
}
}
}
}