问题
I know that there is a "Simulate Memory Warning" on the simulator. However, many people said that the app should be test on real device. How can I test the memory low condition on real device? Running as many apps as possible in background? Any better way?
Thanks.
回答1:
You can use private API to send low memory message:
[[UIApplication sharedApplication] _performMemoryWarning];
Though remember to remove from release otherwise your app might get rejected ;)
Kudos goes to: http://forum.148apps.com/showpost.php?p=8603&postcount=3
回答2:
The previous answer doesn't compile on my machine. The workaround is to call performSelector:, like this:
[[UIApplication sharedApplication] performSelector:@selector(_performMemoryWarning)];
回答3:
There are a few tricks you can try:
Put some NSLog statements in your low memory delegate calls to see if your app is getting stress tested in normal use.
If not:
Prior to running your app, start several large slow web sites downloading in Safari; then while testing your app, send some large emails to a push account on your test device.
For stress testing purpose (use a preprocessor define that is NOT in your distribution build), malloc an extra 10 or 20 or some-test-number megabytes that your app doesn't need, write into it some junk/rand() data to dirty the pages, and don't release it (you can purposely leak 25MB for max stress).
You can also create your own test background app, say a music player that plays silence, put it in the background before testing your app, and have the background audio callback allocate and dirty some large chunks of data.
来源：https://stackoverflow.com/questions/4200936/how-to-test-memory-low-condition-on-real-iphone-ipad-device-not-simulator