尝试在google maps V2 android应用中获取null数组的长度 [英] Attempt to get length of null array in google maps V2 android app

问题描述

我目前正在开发一个使用google maps api的android应用程序，并且我有时会因为没有任何理由而发生奇怪的崩溃（在我看来）。这里是崩溃日志：

  12-02 16：38：57.071 20796-21137 / com.appsolute.ParkYoo E / AndroidRuntime：致命异常：GLThread 4623 
进程：com.appsolute.ParkYoo，PID：20796 
 java.lang.NullPointerException：尝试从java.nio.DirectByteBuffer.put获取空数组
的长度（ DirectByteBuffer.java:399）
位于java.nio.ByteBufferAsShortBuffer.put（ByteBufferAsShortBuffer.java:159）
位于com.google.maps.api.android.lib6.gmm6.ocadd（未知源）
在com.google.maps.api.android.lib6.gmm6.ocada（未知来源）
来自com.google.maps.api.android.lib6.gmm6.oaa（未知来源）
 at com.google.maps.api.android.lib6.gmm6.ocb（Unknown Source）
 at com.google.maps.api.android.lib6.gmm6.oca（Unknown Source）
 at com.google.maps.api.android.lib6.gmm6.ola（未知来源）
，位于com.google.maps.api.android.lib6.gmm6 .olb（未知来源）
，位于com.google.maps.api.android.lib6.gmm6.o.cw.k（未知来源）
，位于com.google.maps.api.android.lib6 .gmm6.o.cw.run（Unknown Source）
  

正如您所看到的，崩溃发生在谷歌API，但代码已被混淆，所以我没有更多的信息，除了在第一行：

  final void put（short [] src，int srcOffset，int shortCount）{
 checkIsAccessible（）; 
 int byteCount = checkPutBounds（SizeOf.SHORT，src.length，srcOffset，shortCount）; //这里是错误
 this.block.pokeShortArray（offset + position，src，srcOffset，shortCount，order.needsSwap）; 
 position + = byteCount; 
 
 $ b @Override 
 public ShortBuffer put（short [] src，int srcOffset，int shortCount）{
 byteBuffer.limit（limit * SizeOf.SHORT）; 
 byteBuffer.position（position * SizeOf.SHORT）; 
 if（byteBuffer instanceof DirectByteBuffer）{
（（DirectByteBuffer）byteBuffer）.put（src，srcOffset，shortCount）; 
（else）{
（（ByteArrayBuffer）byteBuffer）.put（src，srcOffset，shortCount）; 
} 
 this.position + = shortCount; 
返回此; 
} 
  

有没有人遇到过这个错误？我究竟做错了什么 ？

谢谢！

解决方案

您可能会运行多个地图片段。查看我对当前困扰Google地图库的关于多个地图片段的致命错误的写作 - 以及我如何找到解决方法。

$ b

http://www.aphex.cx/the_google_maps_api_is_broken_on_android_5_here_s_a_workaround_for_multiple_map_fragments/

Google目前正在处理此案件，并将其列为优先事项用于Google Play服务的下一个版本！

I am currently developing an android application using google maps api and I sometimes get a weird crash (in my opinion) for no ovious reason. Here's the crash log :

12-02 16:38:57.071  20796-21137/com.appsolute.ParkYoo E/AndroidRuntime﹕ FATAL EXCEPTION: GLThread 4623
    Process: com.appsolute.ParkYoo, PID: 20796
    java.lang.NullPointerException: Attempt to get length of null array
            at java.nio.DirectByteBuffer.put(DirectByteBuffer.java:399)
            at java.nio.ByteBufferAsShortBuffer.put(ByteBufferAsShortBuffer.java:159)
            at com.google.maps.api.android.lib6.gmm6.o.c.a.d.d(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.c.a.d.a(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.a.a(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.c.b(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.c.a(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.l.a(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.l.b(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.cw.k(Unknown Source)
            at com.google.maps.api.android.lib6.gmm6.o.cw.run(Unknown Source)

As you can see, the crash happens in google api but the code has been obfuscated so I don't have more infos about that except on the 2 first lines :

final void put(short[] src, int srcOffset, int shortCount) {
    checkIsAccessible();
    int byteCount = checkPutBounds(SizeOf.SHORT, src.length, srcOffset, shortCount); // here is the error
    this.block.pokeShortArray(offset + position, src, srcOffset, shortCount, order.needsSwap);
    position += byteCount;
  }

@Override
    public ShortBuffer put(short[] src, int srcOffset, int shortCount) {
        byteBuffer.limit(limit * SizeOf.SHORT);
        byteBuffer.position(position * SizeOf.SHORT);
        if (byteBuffer instanceof DirectByteBuffer) {
            ((DirectByteBuffer) byteBuffer).put(src, srcOffset, shortCount);
        } else {
            ((ByteArrayBuffer) byteBuffer).put(src, srcOffset, shortCount);
        }
        this.position += shortCount;
        return this;
    }

Has anyone already encountered this bug ? What am I doing wrong ? If anybody has an insight concerning this issue, I'll be pleased to discuss it.

Thanks !

解决方案

You're likely running more than one map fragment. See my writeup on this fatal bug currently haunting the Google Maps library, concerning multiple map fragments - and how I found a workaround.

http://www.aphex.cx/the_google_maps_api_is_broken_on_android_5_here_s_a_workaround_for_multiple_map_fragments/

Google is currently working on the case and is prioritizing it for the next release of Google Play Services!

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