崩溃onLocationChanged()的Android [英] Crash onLocationChanged() Android
本文介绍了崩溃onLocationChanged()的Android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
我在 onLocationChanged()
方法得到一个崩溃,这是我在LogCat中得到
I am getting a crash in onLocationChanged()
method and this is what I get in logCat
04-10 00:51:43.354: E/AndroidRuntime(4132): FATAL EXCEPTION: main
04-10 00:51:43.354: E/AndroidRuntime(4132): Process: com.dd.assistant, PID: 4132
04-10 00:51:43.354: E/AndroidRuntime(4132): java.lang.NullPointerException
04-10 00:51:43.354: E/AndroidRuntime(4132): at com.twixkat.assistant.MainActivity.onLocationChanged(MainActivity.java:1314)
04-10 00:51:43.354: E/AndroidRuntime(4132): at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:279)
04-10 00:51:43.354: E/AndroidRuntime(4132): at android.location.LocationManager$ListenerTransport.access$000(LocationManager.java:208)
04-10 00:51:43.354: E/AndroidRuntime(4132): at android.location.LocationManager$ListenerTransport$1.handleMessage(LocationManager.java:224)
04-10 00:51:43.354: E/AndroidRuntime(4132): at android.os.Handler.dispatchMessage(Handler.java:102)
04-10 00:51:43.354: E/AndroidRuntime(4132): at android.os.Looper.loop(Looper.java:136)
04-10 00:51:43.354: E/AndroidRuntime(4132): at android.app.ActivityThread.main(ActivityThread.java:5081)
04-10 00:51:43.354: E/AndroidRuntime(4132): at java.lang.reflect.Method.invokeNative(Native Method)
04-10 00:51:43.354: E/AndroidRuntime(4132): at java.lang.reflect.Method.invoke(Method.java:515)
04-10 00:51:43.354: E/AndroidRuntime(4132): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
04-10 00:51:43.354: E/AndroidRuntime(4132): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
04-10 00:51:43.354: E/AndroidRuntime(4132): at dalvik.system.NativeStart.main(Native Method)
和方法:
@Override
public void onLocationChanged(Location arg0) {
// TODO Auto-generated method stub
List<Address> addresses = null;
if (arg0 != null) {
double longitude = arg0.getLongitude();
double latitude = arg0.getLatitude();
Geocoder gcd = new Geocoder(getApplicationContext(), Locale.getDefault());
try {
addresses = gcd.getFromLocation(latitude, longitude, 1);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
citylb.setText(addresses.get(0).getLocality());
getWeather((String) citylb.getText());
// if (addresses.size() > 0) return addresses.get(0).getLocality();
}
}
我跟着一些教程,我不知道为什么应用程序崩溃!谢谢!!
I followed some tutorials and I don't know why application crashes!! Thank You!!
推荐答案
gcd.getFromLocation(纬度,经度,1);
有时返回null。请参阅文件<一个href=\"http://developer.android.com/reference/android/location/Geo$c$cr.html#getFromLocation%28double,%20double,%20int%29\"相对=nofollow>这里。
gcd.getFromLocation(latitude, longitude, 1);
sometimes returns null. See documentation here.
尝试处理这种情况。例如:
Try to handle this situation. For example:
try {
addresses = gcd.getFromLocation(latitude, longitude, 1);
} catch (IOException e) {
// TODO Auto-generated catch block
Log.e("MyTag", "MyMessage", e); // use this instead e.printStackTrace();
}
if(addresses != null && addresses.size() > 0){
citylb.setText(addresses.get(0).getLocality());
getWeather((String) citylb.getText());
}else{
citylb.setText("No adresses found");
}
这篇关于崩溃onLocationChanged()的Android的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文