Android开发-网络状态监测-AndroidStudio

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网络可用、网络不可用；Wifi网络可用、Wifi网络不可用；Mobile网络可用、Mobile网络不可用；当前网络模式

老规矩，先上GIF动态图，看个效果，如果符合你的项目或者确定你要了解的内容，再往下看吧：

MainActivity：

package com.iwanghang.netcheckdemo;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Toast;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }    public void checkNetClick(View view){        boolean bool = isNetWorkConnected(this);        if (bool){            Toast.makeText(this, "网络可用", Toast.LENGTH_SHORT).show();        }else {            Toast.makeText(this, "网络不可用", Toast.LENGTH_SHORT).show();        }    }    public void checkWifiClick(View view){        boolean bool = isWifiConnected(this);        if (bool){            Toast.makeText(this, "Wifi网络可用", Toast.LENGTH_SHORT).show();        }else {            Toast.makeText(this, "Wifi网络不可用", Toast.LENGTH_SHORT).show();        }    }    public void checkMobileClick(View view){        boolean bool = isMobileConnected(this);        if (bool){            Toast.makeText(this, "Mobile网络可用", Toast.LENGTH_SHORT).show();        }else {            Toast.makeText(this, "Mobile网络不可用", Toast.LENGTH_SHORT).show();        }    }    public void checkNetTypeClick(View view){        int mType = getConnectedType(this);        Toast.makeText(this, "当前网络模式为 = " + mType, Toast.LENGTH_SHORT).show();    }    // 判断网络是否可用    public boolean isNetWorkConnected(Context context) {        if (context!=null){            ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();            if (mNetworkInfo!=null){                return mNetworkInfo.isAvailable();            }        }        return false;    }    // 判断WIFI网络是否可用    public boolean isWifiConnected(Context context) {        if (context!=null){            ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mNetworkInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);            if (mNetworkInfo!=null){                return mNetworkInfo.isAvailable();            }        }        return false;    }    // 判断MOBILE网络是否可用    public boolean isMobileConnected(Context context) {        if (context!=null){            ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mNetworkInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);            if (mNetworkInfo!=null){                return mNetworkInfo.isAvailable();            }        }        return false;    }    // 获得当前网络连接的类型信息    public static int getConnectedType(Context context) {        if (context!=null){            ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();            if (mNetworkInfo!=null && mNetworkInfo.isAvailable()){                return mNetworkInfo.getType();            }        }        return -1;    }}

activity_main.xml：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.iwanghang.netcheckdemo.MainActivity">    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Hello World!"        android:id="@+id/textView" />    <Button        android:text="检查网络"        android:onClick="checkNetClick"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/textView"        android:layout_centerHorizontal="true"        android:layout_marginTop="59dp"        android:id="@+id/button_checkNet" />    <Button        android:text="检查WIFI"        android:onClick="checkWifiClick"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/button_checkNet"        android:layout_alignLeft="@+id/button_checkNet"        android:layout_alignStart="@+id/button_checkNet"        android:id="@+id/button_checkWifi" />    <Button        android:text="检查移动网络"        android:onClick="checkMobileClick"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/button_checkMobile"        android:layout_below="@+id/button_checkWifi"        android:layout_centerHorizontal="true" />    <Button        android:text="检查网络模式"        android:onClick="checkNetTypeClick"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/button_checkType"        android:layout_below="@+id/button_checkMobile"        android:layout_alignLeft="@+id/button_checkMobile"        android:layout_alignStart="@+id/button_checkMobile" /></RelativeLayout>

AndroidManifest.xml：

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.iwanghang.netcheckdemo">    <!-- 访问网络 -->    <uses-permission android:name="android.permission.INTERNET" />    <!-- 访问网络状态 -->    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

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