java - 我收到这个错误

Question

我收到此错误：

07-21 11:05:21.484: E/AndroidRuntime(1329): 
       java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
07-21 11:05:21.484: E/AndroidRuntime(1329): 
       at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)

我该如何处理这种错误？这是我的代码：

try {
  List<Address> addresses = mGeocoder.getFromLocation(gettextLat, gettextLong, 1);
  Log.e("TAG", addresses.get(0).getAddressLine(0) + 
        addresses.get(0).getAddressLine(1) + 
        addresses.get(0).getAddressLine(2));
  String myAddress = addresses.get(0).getAddressLine(0) + 
        addresses.get(0).getAddressLine(1) + addresses.get(0).getAddressLine(2);
  textAddresss.setText(myAddress);
} catch (IOException e) {
  e.printStackTrace();
}

Answer 1

你ArrayList的是空的。size在尝试访问它之前检查它

List<Address> addresses = mGeocoder.getFromLocation(gettextLat, gettextLong, 1);
if (addresses.size() > 0) {
    Log.e("TAG", addresses.get(0).getAddressLine(0)
            + addresses.get(0).getAddressLine(1)
            + addresses.get(0).getAddressLine(2));
    String myAddress = addresses.get(0).getAddressLine(0)
            + addresses.get(0).getAddressLine(1)
            + addresses.get(0).getAddressLine(2);
    textAddresss.setText(myAddress);
}