Android webview删除缓存问题

我在自己和朋友的手机上，没有出现这个问题。

android.database.sqlite.SQLiteException: no such table: password: , while compiling: SELECT username, password FROM password WHERE (host == ?) at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) at android.database.sqlite.SQLiteCompiledSql.(SQLiteCompiledSql.java:68) at android.database.sqlite.SQLiteProgram.compileSql(SQLiteProgram.java:143) at android.database.sqlite.SQLiteProgram.compileAndbindAllArgs(SQLiteProgram.java:361) at android.database.sqlite.SQLiteProgram.(SQLiteProgram.java:127) at android.database.sqlite.SQLiteProgram.(SQLiteProgram.java:94) at android.database.sqlite.SQLiteQuery.(SQLiteQuery.java:53) at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:47) at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1684) at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1569) at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1525) at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1605) at android.webkit.WebViewDatabase.getUsernamePassword(WebViewDatabase.java:990) at android.webkit.BrowserFrame.handleMessage(BrowserFrame.java:589) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:950) at java.lang.Thread.run(Thread.java:856)

我只用了webview，没有用sqlite，但是出现了了这个问题。

网上搜了一下，问题肯能出在

context.deleteDatabase("webview.db");
context.deleteDatabase("webviewCache.db");

也是网上关于删除缓存webview的代码。

参考：

http://stackoverflow.com/questions/13013769/strange-sqliteexception-not-in-all-devices

http://stackoverflow.com/questions/8663227/android-webview-throws-sqliteexception

觉得这个删除缓存的方法不太实用，我只是想在某个点去删除所有的缓存，这个方法不太适合：

@Overridepublicvoid onPageFinished(WebView view,String url){

super.onPageFinished(view, url);
    view.clearCache(true);

}

http://stackoverflow.com/questions/7537701/prevent-android-webview-caching-data