执行"的getAddress(geoLng,geoLat);"空指针异常 [英] execute the "getAddress(geoLng,geoLat);" NullPointerException
本文介绍了执行"的getAddress(geoLng,geoLat);"空指针异常的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
为什么
的getAddress(geoLng,geoLat);
地址= coder.getFromLocation(多点定位,mLon,3);
给我这个异常
07-27 00:21:14.655:E / AndroidRuntime(1228):显示java.lang.NullPointerException
下面是code:
@覆盖
公共无效onLocationChanged(位置定位){
// TODO自动生成方法存根
如果(位置!= NULL){
双geoLat = location.getLatitude();
双geoLng = location.getLongitude();
字符串str =(位置:(+ geoLng +,+ geoLat +));
的getAddress(geoLng,geoLat);
}
}
//
公共无效的getAddress(决赛双多点定位,最终双mLon){
线程t =新主题(新的Runnable(){
公共无效的run(){
尝试 {
地址= coder.getFromLocation(多点定位,mLon,3);
如果(!地址=空|| address.size()大于0){
/*handler.sendMessage(Message.obtain(handler,
Constants.GEO codeR_RESULT)); * /
}
}赶上(AMapException E){
// TODO自动生成的catch块
handler.sendMessage(消息
.obtain(处理器,Constants.ERROR));
}}});
t.start();
}
解决方案
没有足够的code在这里给一个完整的答案,但你实际上初始化codeR?如果没有在该行,那么唯一的办法是,如果codeR为null。
why does
getAddress(geoLng,geoLat);
address = coder.getFromLocation(mlat, mLon, 3);
gives me this exception
07-27 00:21:14.655: E/AndroidRuntime(1228): java.lang.NullPointerException
Below is the code:
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
if (location != null) {
Double geoLat = location.getLatitude();
Double geoLng = location.getLongitude();
String str = ("location:(" + geoLng + "," + geoLat + ")");
getAddress(geoLng,geoLat);
}
}
//
public void getAddress(final double mlat, final double mLon) {
Thread t = new Thread(new Runnable() {
public void run() {
try {
address = coder.getFromLocation(mlat, mLon, 3);
if (address != null || address.size() > 0) {
/*handler.sendMessage(Message.obtain(handler,
Constants.GEOCODER_RESULT));*/
}
}catch (AMapException e) {
// TODO Auto-generated catch block
handler.sendMessage(Message
.obtain(handler, Constants.ERROR));
}}});
t.start();
}
解决方案
There is not enough code here to give a full answer, but did you actually initialize coder? If it is failing on that line, then the only way is if coder was null.
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