My application often experienced OutOfMemory exception. To trace
memory leak, I got memory dump from my application process and
examined it in Eclipse Memory Analysis.
The tool gave me a report of potential memory leak. The report is
listed below. The report said there are many
android.webkit.WebHistoryItem instances in the process and the used a
lot of memory. My application has two activities. Activity A starts
Activity B, and B finishes when a button on Activity B is pressed.
Only Activity B contains a WebView. And this activity only opens one
HTML page each time. In the code, I cleared the web history when the
Activity containing the WebView finishes:
public void onDestroy() {
super.onDestroy();
m_storyWebView.clearCache(false);
m_storyWebView.clearHistory();
}
When I got the memory dump, Activity B is closed. Now the question is,
why there are still many WebHistoryItem existing in the process. And,
how can I get rid of the WebHistoryItem instances completely?
Thanks.
******************* Eclipse Memory Analysis report
******************************
26 instances of "android.webkit.WebHistoryItem", loaded by "<system
class loader>" occupy 1,210,328 (27.03%) bytes.
Biggest instances:
* android.webkit.WebHistoryItem @ 0x43cf6fd8 - 80,120 (1.79%)
bytes.
* android.webkit.WebHistoryItem @ 0x43fb2670 - 80,120 (1.79%)
bytes.
* android.webkit.WebHistoryItem @ 0x43e93e00 - 78,176 (1.75%)
bytes.
* android.webkit.WebHistoryItem @ 0x43f63cb8 - 78,176 (1.75%)
bytes.
* android.webkit.WebHistoryItem @ 0x43cf5d60 - 65,168 (1.46%)
bytes.
* android.webkit.WebHistoryItem @ 0x43f19a88 - 65,168 (1.46%)
bytes.
* android.webkit.WebHistoryItem @ 0x43d1c280 - 62,408 (1.39%)
bytes.
* android.webkit.WebHistoryItem @ 0x43d11720 - 58,992 (1.32%)
bytes.
* android.webkit.WebHistoryItem @ 0x43d51a48 - 57,912 (1.29%)
bytes.
* android.webkit.WebHistoryItem @ 0x43d9e6c8 - 57,672 (1.29%)
bytes.
* android.webkit.WebHistoryItem @ 0x43d2fcc8 - 55,728 (1.24%)
bytes.
* android.webkit.WebHistoryItem @ 0x43d143d0 - 51,344 (1.15%)
bytes.
* android.webkit.WebHistoryItem @ 0x43e202e0 - 49,568 (1.11%)
bytes.
* android.webkit.WebHistoryItem @ 0x43ef74d8 - 49,304 (1.10%)
bytes.
* android.webkit.WebHistoryItem @ 0x43f513f8 - 47,144 (1.05%)
bytes.
* android.webkit.WebHistoryItem @ 0x43f18808 - 46,280 (1.03%)
bytes.
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