android 如何log出 当前的程序使用的内存情况 或者说 Bitmap 使用了多大内存

        System.out.println("获得整个程序的内存总数 ===== " + Runtime.getRuntime().totalMemory());         System.out.println("可用内存总数  ===== " + Runtime.getRuntime().freeMemory());         System.out.println("最大内存量 ===== " + Runtime.getRuntime().maxMemory()); 

public static void displayBriefMemory() {        Double allocated = new Double(Debug.getNativeHeapAllocatedSize())/new Double((1048576));        Double available = new Double(Debug.getNativeHeapSize())/1048576.0;        Double free = new Double(Debug.getNativeHeapFreeSize())/1048576.0;        DecimalFormat df = new DecimalFormat();        df.setMaximumFractionDigits(2);        df.setMinimumFractionDigits(2);        Log.d("gettings", "debug. =================================");        Log.d("gettings", "debug.heap native: allocated " + df.format(allocated) + "MB of " + df.format(available) + "MB (" + df.format(free) + "MB free)");        Log.d("gettings", "debug.memory: allocated: " + df.format(new Double(Runtime.getRuntime().totalMemory()/1048576)) + "MB of " + df.format(new Double(Runtime.getRuntime().maxMemory()/1048576))+ "MB (" + df.format(new Double(Runtime.getRuntime().freeMemory()/1048576)) +"MB free)");    }

        final ActivityManager activityManager = (ActivityManager) getSystemService(Service.ACTIVITY_SERVICE);            ActivityManager.MemoryInfo info = new ActivityManager.MemoryInfo();           activityManager.getMemoryInfo(info);            Log.e("####","系统剩余内存:"+(info.availMem >> 20)+"M");           Log.e("####","系统是否处于低内存运行："+info.lowMemory);        Log.e("####","当系统剩余内存低于"+(info.threshold >> 20)+"M 时就看成低内存运行");

        Double allocated = new Double(Debug.getNativeHeapAllocatedSize())/new Double((1048576));        Double available = new Double(Debug.getNativeHeapSize())/1048576.0;        Double free = new Double(Debug.getNativeHeapFreeSize())/1048576.0;        DecimalFormat df = new DecimalFormat();        df.setMaximumFractionDigits(2);        df.setMinimumFractionDigits(2);        Log.e("gettings", "debug. =================================");        Log.e("gettings", "debug.heap native: allocated " + df.format(allocated) + "MB of " + df.format(available) + "MB (" + df.format(free) + "MB free)");        Log.e("gettings", "debug.memory: allocated: " + df.format(new Double(Runtime.getRuntime().totalMemory()/1048576)) + "MB of " + df.format(new Double(Runtime.getRuntime().maxMemory()/1048576))+ "MB (" + df.format(new Double(Runtime.getRuntime().freeMemory()/1048576)) +"MB free)");