1. 添加相應的權限
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
2. 判斷方法
public boolean isNetworkAvailable() {
Context context = getApplicationContext();
ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
Toast.makeText(getBaseContext(), "zm zm zm zm zm zm ", Toast.LENGTH_LONG).show();
} 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;
}