android内存检测

ゝ一纸荒年。 2022-08-13 13:57 210阅读 0赞

/**
         * 开启线程检测软件可用内存情况,软件退出后， 调用System.exit(0)该线程才会停止 *
         * 
         * @param sleep
         *            每隔一段时间检测内存
         * @param standard
         *            内存超过多少比例报警
         */
        public static void memoryWatch(final int sleep, final int standard)
        {
            if (sleep <= 0)
            {
                Log.e(TAG, "memoryWatch, invalid sleep = 0!");
                return;
            }
    
            if (standard <= 0 && standard > 100)
            {
                Log.e(TAG, "memoryWatch, invalid standard percent = " + standard);
                return;
            }
    
            new Thread(new Runnable()
            {
                @Override
                public void run()
                {
                    Log.d(TAG, "memoryWatch, start thread!");
                    while (true)
                    {
                        long divisor = 1024 * 1024;
                        long maxMem = Runtime.getRuntime().maxMemory();
                        long totalMem = Runtime.getRuntime().totalMemory();
                        long freeMem = Runtime.getRuntime().freeMemory();
                        int percent = (int) (totalMem * 100 / maxMem);
                        Log.d(TAG, "memoryWatch" + ", app maxMem = " + maxMem
                                / divisor + "M, totalMem = " + totalMem / divisor
                                + "M, freeMem = " + freeMem / divisor
                                + "M, percent = " + percent);
                        if (standard <= percent)
                        {
                            if (freeMem / divisor <= 2)
                            {
                                Log.e(TAG, "memoryWatch" + ", app maxMem = "
                                        + maxMem / divisor + "M, totalMem = "
                                        + totalMem / divisor + "M, freeMem = "
                                        + freeMem / divisor + "M, percent = "
                                        + percent);
    
                            }
                            else if (freeMem / divisor >= totalMem / (divisor * 2))
                            {
                                Log.e(TAG, "memoryWatch" + ", app maxMem = "
                                        + maxMem / divisor + "M, totalMem = "
                                        + totalMem / divisor + "M, freeMem = "
                                        + freeMem / divisor + "M, percent = "
                                        + percent + "%"
                                        + ", reset memory warn flag = true!");
                            }
                        }
    
                        try
                        {
                            Thread.sleep(sleep);
                        }
                        catch (InterruptedException e)
                        {
                            Log.e(TAG, "memoryWatch, thread sleep exception : " + e);
                        }
                    }
                }
            }).start();
        }