本文介绍了在 Android 中检查 Internet 连接的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
Is there any background task which runs with in application to check for internet connectivity for below scenarios as common ?
1.Start of parsing/fetching data from server
2.In between of parsing/fetching from server
Any sample code or links helps me a lot.
解决方案
You can use the below utility class make sure to give internet permission in manifest.
Let me know if any issues.
private static NetworkUtil mInstance;
private volatile boolean mIsOnline;
private NetworkUtil() {
ScheduledExecutorService exec = Executors.newSingleThreadScheduledExecutor();
exec.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
boolean reachable = false;
try {
Process process = java.lang.Runtime.getRuntime().exec("ping -c 1 www.google.com");
int returnVal = process.waitFor();
reachable = (returnVal==0);
} catch (Exception e) {
e.printStackTrace();
}
mIsOnline = reachable;
}
}, 0, 5, TimeUnit.SECONDS);
}
public static NetworkUtil getInstance() {
if (mInstance == null) {
synchronized (NetworkUtil.class) {
if (mInstance == null) {
mInstance = new NetworkUtil();
}
}
}
return mInstance;
}
public boolean isOnline() {
return mIsOnline;
}
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