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private class CheckThread extends Thread {
    volatile boolean stop = false;

    @Override
    public void run() {
        synchronized(this) {
            try {
                int count = 0;
                while (!stop) {
                    if (DEBUG) Slog.v(TAG, "start checking stat ...");
                    checkServer();
                    sleep(1000 * 20);
                    count++;
                    if (count >= MAX_TRY_CHECK) {
                        if (DEBUG) Slog.v(TAG, "!!!reconnect reach max fail time, stop check!!!");
                        stop = true;
                        count = 0;
                    }
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

private CheckThread mThread = new CheckThread();

// 启动
if (!mThread.isAlive()) {
    try {
        Thread.sleep(1000 * 5);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    mThread.stop = false;
    mThread.start();
    if (DEBUG) Slog.v(TAG, "start check thread");
}
// 结束
if (mThread.isAlive()) {
    if (DEBUG) Slog.v(TAG, "stop check thread");
    mThread.stop = true;
    mThread.interrupt();
}

/**
 * 销毁线程方法1
 */
private void destroyThread() {
    try {
        isStart = false;
        if (null != mRecordThread && Thread.State.RUNNABLE == mRecordThread.getState()) {
            try {
                Thread.sleep(500);
                mRecordThread.interrupt();
            } catch (Exception e) {
                mRecordThread = null;
            }
        }
        mRecordThread = null;
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        mRecordThread = null;
    }
}

// 方法二
if (mVThread.isAlive()) {
    if (DEBUG) Slog.v(TAG, "stop v check thread");
    mVThread.stop = true;
    mVThread.interrupt();
}
//check connection
private class VCheckThread extends Thread {
    volatile boolean stop = false;
    @Override
    public void run() {
        synchronized(this) {
            try {
                int count = 0;
                while (!stop) {
                    if (DEBUG) Slog.v(TAG, "start checking v stat ...");
                    checkServer();
                    sleep(1000 * 20);
                    count++;
                    if (count >= MAX_TRY_CHECK_V) {
                        if (DEBUG) Slog.v(TAG, "!!!reconnect reach max fail time, stop checking!!!");
                        stop = true;
                        count = 0;
                    }
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}