One of the most common errors that I found developing Android Apps is the “java.lang.OutOfMemoryError: Bitmap Size Exceeds VM Budget” error. I found this error frequently on activities using lots of bitmaps after changing orientation: the Activity is destroyed, created again and the layouts are “inflated” from the XML consuming the VM memory available for … Read more
Solution The compiler is warning about this for a reason. It’s very rare that this warning should simply be ignored, and it’s easy to work around. Here’s how: if (!_controller) { return; } SEL selector = NSSelectorFromString(@”someMethod”); IMP imp = [_controller methodForSelector:selector]; void (*func)(id, SEL) = (void *)imp; func(_controller, selector); Or more tersely (though hard … Read more
Dealing with “java.lang.OutOfMemoryError: PermGen space” error
Activity has leaked window that was originally added
As jakobengblom2 pointed out, valgrind has a suit of tools. Depending which one you are talking about there are different windows counter parts. I will only mention OSS or free tools here. 1. MemCheck: Dr. Memory. It is a relatively new tool, works very well on Windows 7. My favorite feature is that it groups … Read more
Parameters and local variables are allocated on the stack (with reference types, the object lives on the heap and a variable in the stack references that object on the heap). The stack typically lives at the upper end of your address space and as it is used up it heads towards the bottom of the … Read more
How can I create a memory leak in Java?
You are using ARC based project there is no need to release memory, it will automatically managed. Your problem is somewhere else please post some more code.
You have your char *cstr = new char[data.size() + 1]; and the corresponding delete[] cstr; and these are implemented correctly (matching new[] with delete[]). Nowhere else in your code do you allocate memory on the heap, and I don’t see anywhere that cstr is modified either. All of these suggest that you don’t have a … Read more
Missing the real questions, but probably the following : DBFactory.CreateDabase value should be disposed at the end. Moreover you are keeping the last value alive by keeping the reference within you class. Why are “dal, query, ds and cmd” some fields of the class ? They are different each time you run a query. Declare … Read more