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    <p>some advices:</p> <ol> <li><p><strong>do not have a static reference to a View</strong> object (or a drawable , or anything that has a reference to context) . it's a very bad practive which could easily get you to memory leaks .reason: even after leaving the activity , there is a static reference to a view which references to the activity that you've left,including all of its fields(your large collections , for example). read <a href="http://developer.android.com/resources/articles/avoiding-memory-leaks.html" rel="nofollow"><strong>here</strong></a> for more info.</p></li> <li><p>do you really have to read the entire file , and store its entire content into the memory? of course it's easy for you and much faster than anything else , but it can easily take a lot of memory , especially if you use it this way . try to <strong>read only what you need</strong> , and <strong>store only what you need</strong>.</p></li> <li><p>watch <a href="http://www.google.com/events/io/2011/sessions/memory-management-for-android-apps.html" rel="nofollow"><strong>google's</strong></a> video for showing how to find &amp; handle memory leaks </p></li> <li><p>do you really have to store the data in strings? how about just the values that need to be checked (coordinates,perhaps?) or a <strong>collection of Pois</strong> , each has its own fields (id,name,coordinates,...) ? a string in java is an array of characters , each takes 2 bytes (since it's unicode) , so it can take a lot of space in the memory .as an example, 60000 rows times 80 characters times 2 bytes per character is 9,600,000 bytes , which is almost <strong>10MB</strong> . you need to be tighter in memory usage. remember that it's a mobile platform which has memory efficiency in one of its top priorities (for better tasks switching) .</p> <p>using a collection of Pois will not only be better in design perspective (easier to read , understand , maintain,...) . it will also take less space - using primitives instead of wrappers (int instead of Integer, for example) . </p></li> </ol>
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    1. COthis solution might work , but it might also ruin your activities flows design . consider checking if you really must have the mapView stored , and instead use the data that it needs . also , try to set flags on the manifest that will prevent the activity from being re-created (like those of the configuration change) .
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