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标题:Android（安卓）判断是否联网及判断SDK版本
正文:
public static int getSDKVersionNumber() {
int sdkVersion;
try {
sdkVersion = Integer.valueOf(android.os.Build.VERSION.SDK);

} catch (NumberFormatException e) {

sdkVersion = 0;
}
return sdkVersion;
}public static boolean hasInternet(Activity activity) {
ConnectivityManager manager = (ConnectivityManager) activity
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = manager.getActiveNetworkInfo();
if (info == null || !info.isConnected()) {
return false;
}
if (info.isRoaming()) {
return true;
}
return true;
}
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