我的应用程序在使用Verizon的4G/LTE时会遇到崩溃问题,一些用户向我报告了这个问题。
查看堆栈跟踪,似乎是Android的HttpClient.execute()实现引发了OOM。这仅在4G/LTE设备上发生,特别是HTC Thunderbolt,并且仅在4G/LTE时发生。WiFi、3G、UMTS都没问题。在Sprint的WiMax 4G上也没有问题。
两个问题:
如何最好地引起Android开发人员的注意?除了在http://code.google.com/p/android/issues上报告之外,还有更好的选择吗?
有什么办法可以解决这个问题吗?我自己没有4G设备,而且在模拟器中也无法重现这个问题,所以需要进行一些合理的猜测。我可以尝试在代码中捕获OOM并尝试清理和强制GC,但我不确定是否是一个好主意。您有其他建议或意见吗?
这是我的代码在做什么:
HttpParams params = this.getHttpParams(); // returns params
ClientConnectionManager cm = new ThreadSafeClientConnManager(params, this.getHttpSchemeRegistry() );
DefaultHttpClient httpClient = new DefaultHttpClient( cm, params );
HttpResponse response = null;
request = new HttpGet( url );
try {
response = httpClient.execute(request); // <-- OOM on 4G/LTE. OK otherwise
int statusCode = response.getStatusLine().getStatusCode();
Log.i("fetcher", "execute returned, http status " + statusCode );
...
以下是崩溃堆栈跟踪信息:
E/dalvikvm-heap(11639): 内存不足, 在分配 2055696 字节时出现错误。 I/dalvikvm(11639): “Thread-16” 优先级=5 tid=9 RUNNABLE I/dalvikvm(11639): | group="main" sCount=0 dsCount=0 s=N obj=0x48563070 self=0x3c4340 I/dalvikvm(11639): | sysTid=11682 nice=0 sched=0/0 cgrp=default handle=3948760 I/dalvikvm(11639): | schedstat=( 208709711 74005130 214 )
I/dalvikvm(11639): at org.apache.http.impl.io.AbstractSessionInputBuffer.init(AbstractSessionInputBuffer.java:~79) I/dalvikvm(11639): at org.apache.http.impl.io.SocketInputBuffer.(SocketInputBuffer.java:93) I/dalvikvm(11639): at org.apache.http.impl.SocketHttpClientConnection.createSessionInputBuffer(SocketHttpClientConnection.java:83) I/dalvikvm(11639): at org.apache.http.impl.conn.DefaultClientConnection.createSessionInputBuffer(DefaultClientConnection.java:170) I/dalvikvm(11639): at org.apache.http.impl.SocketHttpClientConnection.bind(SocketHttpClientConnection.java:106) I/dalvikvm(11639): at org.apache.http.impl.conn.DefaultClientConnection.openCompleted(DefaultClientConnection.java:129) I/dalvikvm(11639): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:173) I/dalvikvm(11639): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) I/dalvikvm(11639): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) I/dalvikvm(11639): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348) I/dalvikvm(11639): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) I/dalvikvm(11639): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) I/dalvikvm(11639): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) I/dalvikvm(11639): at com.myapplication.Fetcher.trySourceFetch(Fetcher.java:205) I/dalvikvm(11639): at com.myapplication.Fetcher.run(Fetcher.java:298) I/dalvikvm(11639): at java.lang.Thread.run(Thread.java:1102) I/dalvikvm(11639): E/dalvikvm(11639): Out of memory: Heap Size=24171KB, Allocated=23142KB, Bitmap Size=59KB, Limit=21884KB E/dalvikvm(11639): Extra info: Footprint=24327KB, Allowed Footprint=24519KB, Trimmed=348KB W/dalvikvm(11639): threadid=9: thread exiting with uncaught exception (group=0x40025b38)