参考资料：

http://blog.csdn.net/u011506413/article/details/50965435

http://blog.csdn.net/zhangfei2018/article/details/49154479

http://blog.csdn.net/andrexpert/article/details/75045678

自己测试结论：

当程序的java heap达到 system/build.prop的dalvik.vm.heapgrowthlimit=256m时

程序就会报出：java.lang.OutOfMemoryError: OutOfMemoryError thrown while trying to throw OutOfMemoryError; no stack trace available

程序会crash掉