乱七八糟的东西

1.得到Realtime
SystemClock.elapsedRealtime(); 从boot获取经历时间，与修改手机时间是无关的。
2.跳转Rate

try {
    Intent intent = new Intent(Intent.ACTION_VIEW);
    String referrer = "market://details?id=" +   mainActivity.getPackageName();
    intent.setData(Uri.parse(referrer));
    mainActivity.startActivity(intent);
} catch (Exception e) {
    e.printStackTrace();
} catch (OutOfMemoryError e) {
    e.printStackTrace();
     throw e;
}

3.判断手机是不是有网
判断有wifi或者是数据流量。

    public boolean isNetworkConnected() {
        try {
            Context context = mainActivity;
            if (context != null) {
                ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                        .getSystemService(Context.CONNECTIVITY_SERVICE);
                NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
                if (mNetworkInfo != null && mNetworkInfo.isAvailable()) {
                    return true;
                }
            }
            return false;
        } catch (Exception e) {
            return false;
        }
    }

网上找到另一个方法，这种不是很正确，因为有卡的手机，它是有volite网络的，判断的结果也是有网。代码如下：

    public boolean checkNet(){
        ConnectivityManager connectivityManager = (ConnectivityManager) getContext()
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivityManager == null) {
            return false;
        } else {
            NetworkInfo[] net_info = connectivityManager.getAllNetworkInfo();

            if (net_info != null) {
                for (int i = 0; i < net_info.length; i++) {
                    if (net_info[i].getState() == NetworkInfo.State.CONNECTED) {
                        BrickLog.INFO("net connect");
                        return true;
                    }
                }
            }
        }
        BrickLog.INFO("net disconnect");
        return false;
    }
}