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我把它放在 Application 类的 Create() 的第一行：

@Override
public void onCreate() {
    Log.i("test", "application oncreate");
    showMemoryStats();
    super.onCreate();
}

其中 showMemoryStats() 是：

public static void showMemoryStats() {

    double nativeUsage = Debug.getNativeHeapAllocatedSize(); 
    Log.i("test", "nativeUsage: " + nativeUsage);
    //current heap size 
    double heapSize =  Runtime.getRuntime().totalMemory();
    Log.i("test", "heapSize: " + heapSize);
    //amount available in heap 
    double heapRemaining = Runtime.getRuntime().freeMemory();   
    Log.i("test", "heapRemaining: " + heapRemaining);
    double memoryAvailable = Runtime.getRuntime().maxMemory() - (heapSize - heapRemaining) - nativeUsage;
    Log.i("test", "memoryAvailable: " + memoryAvailable);

}

我在完全卸载后启动应用程序。我得到：

07-03 17:39:05.212: I/test(19016): nativeUsage: 5649968.0

07-03 17:39:05.212: I/test(19016): heapSize: 4710384.0

07-03 17:39:05.212: I/test(19016): heapRemaining: 1705056.0

07-03 17:39:05.212: I/test(19016): memoryAvailable: 2.4899136E7

这在本机堆中已经是 5 mb，为什么？这正常吗？

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