我必须开发一个Android应用程序。
这里我要开发一个twitter集成android应用程序。
我使用下面的代码:
public void onClickTwitt() {
if (isNetworkAvailable()) {
Twitt twitt = new Twitt(getActivity(), consumer_key, secret_key);
twitt.shareToTwitter(_Title);
} else {
showToast("No Network Connection Available !!!");
}
}
public boolean isNetworkAvailable() {
ConnectivityManager connectivity =(ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
return false;
} else {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
}
return false;
}
这里得到以下错误:
The method getSystemService(String) is undefined for the type
SubCate
请帮帮我......我怎样才能解决这些错误????
答案 0 :(得分:6)
public static boolean isNetworkAvailable(Context context) {
if(context == null) { return false; }
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
// if no network is available networkInfo will be null, otherwise check if we are connected
try {
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
if (activeNetworkInfo != null && activeNetworkInfo.isConnected()) {
return true;
}
} catch (Exception e) {
AppLog.e(TAG, "isNetworkAvailable()" , e.getMessage());
}
return false;
}
然后执行此操作
if(isNetworkAvailable(TempOrderActivity.this)) {
//do something
} else {
//do something
}
答案 1 :(得分:4)
public void onClickTwitt() {
if (isNetworkAvailable(this)) {
Twitt twitt = new Twitt(getActivity(), consumer_key, secret_key);
twitt.shareToTwitter(_Title);
} else {
showToast("No Network Connection Available !!!");
}
}
public boolean isNetworkAvailable(Context context) {
ConnectivityManager connectivity =(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
return false;
} else {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
}
return false;
}