這個(gè)自己在項(xiàng)目中總結(jié)了一個(gè)工具類 如下

public class NetWorkUtils {private NetWorkUtils() {/* cannot be instantiated */throw new UnsupportedOperationException("cannot be instantiated");}/*** 判斷網(wǎng)絡(luò)是否連接* @param context* @return*/public static boolean isConnected(Context context) {if (context == null) {Log.e("111111", "傳進(jìn)來的context實(shí)例為空！");return false;}ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);if (null != connectivity) {NetworkInfo info = connectivity.getActiveNetworkInfo();if (null != info && info.isConnected()) {if (info.getState() == NetworkInfo.State.CONNECTED) {return true;}}}return false;}/*** 判斷是否是wifi連接*/public static boolean isWifi(Context context) {ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);if (cm == null)return false;return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;}/*** 判斷是否為移動(dòng)網(wǎng)絡(luò)*/public static boolean isMobile(Context context) {ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);if (cm == null)return false;return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_MOBILE;}/*** 打開網(wǎng)絡(luò)設(shè)置界面*/public static void openSetting(Activity activity) {Intent intent = new Intent("/");ComponentName cm = new ComponentName("com.android.settings","com.android.settings.WirelessSettings");intent.setComponent(cm);intent.setAction("android.intent.action.VIEW");activity.startActivityForResult(intent, 0);}}

?

使用的時(shí)候判斷下即可

if (!NetWorkUtils.isConnected(this)) {ToastUtils.showLong("網(wǎng)絡(luò)無連接");
}

或者自己封裝網(wǎng)絡(luò)請(qǐng)求的時(shí)候把這個(gè)判斷寫進(jìn)去也行。。。。

總結(jié)

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