先獲取系統(tǒng)管理網(wǎng)絡(luò)連接的Manager：

ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

再獲取當(dāng)前已經(jīng)激活的連接：（當(dāng)期為null時代表當(dāng)前無連接）

NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();

其中常量ConnectivityManager.TYPE_MOBILE標(biāo)識著是移動數(shù)據(jù)流量，

而ConnectivityManager.TYPE_WIFI標(biāo)志著是wifi。

package com.example.NetworkChangeReceiver2;import android.app.Activity; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.Bundle; import android.view.View; import android.widget.Toast;public class MyActivity extends Activity {ConnectivityManager connectivityManager;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);}public void isWifi(View view) {NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();if (activeNetworkInfo == null) {Toast.makeText(this, "沒有聯(lián)網(wǎng)！", 1).show();return;}if(activeNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI) {Toast.makeText(this, "連接的網(wǎng)絡(luò)是wifi！", 1).show();} else {Toast.makeText(this, "不是wifi！", 1).show();}}public void isMobile(View view) {NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();if (activeNetworkInfo == null) {Toast.makeText(this, "沒有聯(lián)網(wǎng)！", 1).show();return;}if(activeNetworkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {Toast.makeText(this, "連接的網(wǎng)絡(luò)是移動數(shù)據(jù)流量！", 1).show();} else {Toast.makeText(this, "不是移動數(shù)據(jù)流量！", 1).show();}} }

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轉(zhuǎn)載于:https://www.cnblogs.com/wuyou/p/3676868.html

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