现象步骤： 内存泄漏，
从给的操作视频 提取主要点， 分为阶段测试
1.提取步骤，单独测试
（1）拍照, back
（2）拍照，home
（3）切换模式 ， back
(4) 进入 camera，back
(5) 进入 camera，home
等等...
发现问题点在 进入（5） camera， home 测试后， 每次native 的的占用都会增加， 且无回落。
2. 分析脚本(自动进入 home)抓取的 memory info.
可看到明显的 Native Heap增加， Graphics项 明显的增加
** MEMINFO in pid 12056 [com..camera] **Pss Private Private SwapPss Heap Heap HeapTotal Dirty Clean Dirty Size Alloc Free------ ------ ------ ------ ------ ------ ------Native Heap 45868 45144 700 23381 79016 62452 16563Dalvik Heap 43074 43032 28 57 21443 16083 5360...TOTAL 162844 122116 9304 25743 100459 78535 21923App SummaryPss(KB)------Java Heap: 45096Native Heap: 45144Code: 8260Stack: 36Graphics: 28672Private Other: 4212System: 31424TOTAL: 162844 TOTAL SWAP PSS: 25743** MEMINFO in pid 12056 [com..camera] **Pss Private Private SwapPss Heap Heap HeapTotal Dirty Clean Dirty Size Alloc Free------ ------ ------ ------ ------ ------ ------Native Heap 45468 44772 672 22269 76724 63081 13642Dalvik Heap 32608 31720 792 16 21450 16088 5362...TOTAL 160868 120424 10172 24506 98174 79169 19004App SummaryPss(KB)------Java Heap: 33784Native Heap: 44772Code: 8392Stack: 36Graphics: 38588Private Other: 5024System: 30272TOTAL: 160868 TOTAL SWAP PSS: 24506** MEMINFO in pid 12056 [com..camera] **Pss Private Private SwapPss Heap Heap HeapTotal Dirty Clean Dirty Size Alloc Free------ ------ ------ ------ ------ ------ ------Native Heap 47984 47336 624 21977 79624 64317 15306Dalvik Heap 24568 23680 792 16 21456 16092 5364...TOTAL 159029 118908 10144 24198 101080 80409 20670App SummaryPss(KB)------Java Heap: 25744Native Heap: 47336Code: 8416Stack: 36Graphics: 42492Private Other: 5028System: 29977TOTAL: 159029 TOTAL SWAP PSS: 24198