Android开发wifi功能(附近Wi-Fi,输入密码,链接Wi-Fi)
2018-03-13 09:08
591 查看
嗨,今天给大家带来Android开发wifi模块的功能,包涵检查网络状态,开启Wi-Fi,关闭Wi-Fi,扫描附近Wi-Fi,链接Wi-Fi,…
首先创建两个.xml界面,如下:mbtton.xml ,wifi_listitem.xml
wifi_listitem.xml界面:
然后就是建立java,adapter程序(MbuttonActivity.java ,WifiAdmin.java)
创建WifiAdmin.java程序入口;
把代码都复制上去,就可以看到效果啦,是不是特别的爽,感觉好高端大气牛逼?如果觉得此篇文章对您有所帮助,请别忘记关注或点赞,博主还会继续发表更有趣的文章,有问题可以留言,望各位每天进步一点点,学无止境!!
首先创建两个.xml界面,如下:mbtton.xml ,wifi_listitem.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <LinearLayout android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="wrap_content"> <include layout="@layout/test_gridview_item"/> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <Button android:id="@+id/check_wifi" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="检查"/> <Button android:id="@+id/open_wifi" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="打开"/> <Button android:id="@+id/close_wifi" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="关闭"/> <Button android:id="@+id/scan_wifi" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="扫描"/> <ListView android:id="@+id/wifi_list" android:layout_width="match_parent" android:layout_height="wrap_content"> </ListView> </LinearLayout> </LinearLayout>
wifi_listitem.xml界面:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <TextView android:id="@+id/ssid" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="123"/> <ImageView android:id="@+id/wifi_level" android:layout_width="30dip" android:layout_height="30dip" android:background="@mipmap/ic_launcher" /> </LinearLayout> </LinearLayout>
然后就是建立java,adapter程序(MbuttonActivity.java ,WifiAdmin.java)
import android.annotation.SuppressLint; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.wifi.ScanResult; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import java.util.List; /** * Created by rnd on 2018/3/12. */ public class MbuttonActivity extends Activity implements View.OnClickListener { public static final String TAG = "MainActivity"; private Button check_wifi,open_wifi,close_wifi,scan_wifi; private ListView mlistView; protected WifiAdmin mWifiAdmin; private List<ScanResult> mWifiList; public int level; protected String ssid; private LinearLayout toolbar; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.mbutton); mWifiAdmin = new WifiAdmin(MbuttonActivity.this); initViews(); IntentFilter filter = new IntentFilter( WifiManager.NETWORK_STATE_CHANGED_ACTION); //="android.net.wifi.STATE_CHANGE" 监听wifi状态的变化 registerReceiver(mReceiver, filter); mlistView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { AlertDialog.Builder alert=new AlertDialog.Builder(MbuttonActivity.this); ssid=mWifiList.get(position).SSID; alert.setTitle(ssid); alert.setMessage("输入密码"); final EditText et_password=new EditText(MbuttonActivity.this); final SharedPreferences preferences=getSharedPreferences("wifi_password",Context.MODE_PRIVATE); et_password.setText(preferences.getString(ssid, "")); alert.setView(et_password); //alert.setView(view1); alert.setPositiveButton("连接", new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { String pw = et_password.getText().toString(); if(null == pw || pw.length() < 8){ Toast.makeText(MbuttonActivity.this, "密码至少8位", Toast.LENGTH_SHORT).show(); return; } SharedPreferences.Editor editor=preferences.edit(); editor.putString(ssid, pw); //保存密码 editor.commit(); mWifiAdmin.addNetwork(mWifiAdmin.CreateWifiInfo(ssid, et_password.getText().toString(), 3)); } }); alert.setNegativeButton("取消", new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { // //mWifiAdmin.removeWifi(mWifiAdmin.getNetworkId()); } }); alert.create(); alert.show(); } }); } /* * 控件初始化 * */ private void initViews() { check_wifi=(Button) findViewById(R.id.check_wifi); open_wifi=(Button) findViewById(R.id.open_wifi); close_wifi=(Button) findViewById(R.id.close_wifi); scan_wifi=(Button) findViewById(R.id.scan_wifi); mlistView=(ListView) findViewById(R.id.wifi_list); toolbar=findViewById(R.id.toolbar); check_wifi.setOnClickListener(MbuttonActivity.this); open_wifi.setOnClickListener(MbuttonActivity.this); close_wifi.setOnClickListener(MbuttonActivity.this); scan_wifi.setOnClickListener(MbuttonActivity.this); toolbar.setOnClickListener(MbuttonActivity.this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.check_wifi: mWifiAdmin.checkState(MbuttonActivity.this); break; case R.id.open_wifi: mWifiAdmin.openWifi(MbuttonActivity.this); break; case R.id.close_wifi: mWifiAdmin.closeWifi(MbuttonActivity.this); break; case R.id.toolbar: finish(); break; case R.id.scan_wifi: mWifiAdmin.startScan(MbuttonActivity.this); mWifiList=mWifiAdmin.getWifiList(); if(mWifiList!=null){ mlistView.setAdapter(new MyAdapter(this,mWifiList)); new Utility().setListViewHeightBasedOnChildren(mlistView); } break; default: break; } } @Override public void onPointerCaptureChanged(boolean hasCapture) { } public class MyAdapter extends BaseAdapter{ LayoutInflater inflater; List<ScanResult> list; public MyAdapter(Context context, List<ScanResult> list){ this.inflater=LayoutInflater.from(context); this.list=list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return position; } @Override public long getItemId(int position) { return position; } @SuppressLint({ "ViewHolder", "InflateParams" }) @Override public View getView(int position, View convertView, ViewGroup parent) { View view=null; view=inflater.inflate(R.layout.wifi_listitem, null); ScanResult scanResult = list.get(position); TextView wifi_ssid=(TextView) view.findViewById(R.id.ssid); ImageView wifi_level=(ImageView) view.findViewById(R.id.wifi_level); wifi_ssid.setText(scanResult.SSID); Log.i(TAG, "scanResult.SSID="+scanResult); level=WifiManager.calculateSignalLevel(scanResult.level,5); if(scanResult.capabilities.contains("WEP")||scanResult.capabilities.contains("PSK")|| scanResult.capabilities.contains("EAP")){ wifi_level.setImageResource(R.drawable.btoom_withe); }else{ wifi_level.setImageResource(R.drawable.btoom_withe); } wifi_level.setImageLevel(level); //判断信号强度,显示对应的指示图标 return view; } } /*设置listview的高度*/ public class Utility { public void setListViewHeightBasedOnChildren(ListView listView) { ListAdapter listAdapter = listView.getAdapter(); if (listAdapter == null) { return; } int totalHeight = 0; for (int i = 0; i < listAdapter.getCount(); i++) { View listItem = listAdapter.getView(i, null, listView); listItem.measure(0, 0); totalHeight += listItem.getMeasuredHeight(); } ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)); listView.setLayoutParams(params); } } //监听wifi状态 private BroadcastReceiver mReceiver = new BroadcastReceiver (){ @Override public void onReceive(Context context, Intent intent) { ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo wifiInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); if(wifiInfo.isConnected()){ WifiManager wifiManager = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); String wifiSSID = wifiManager.getConnectionInfo() .getSSID(); Toast.makeText(context, wifiSSID+"连接成功", 1).show(); } } }; }
创建WifiAdmin.java程序入口;
import java.util.ArrayList; import java.util.List; import android.content.Context; import android.net.wifi.ScanResult; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.net.wifi.WifiManager.WifiLock; import android.widget.Toast; public class WifiAdmin { // 定义WifiManager对象 private WifiManager mWifiManager; // 定义WifiInfo对象 private WifiInfo mWifiInfo; // 扫描出的网络连接列表 private List<ScanResult> mWifiList; // 网络连接列表 private List<WifiConfiguration> mWifiConfiguration; // 定义一个WifiLock WifiLock mWifiLock; // 构造器 public WifiAdmin(Context context) { // 取得WifiManager对象 mWifiManager = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); // 取得WifiInfo对象 mWifiInfo = mWifiManager.getConnectionInfo(); } // 打开WIFI public void openWifi(Context context) { if (!mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(true); }else if (mWifiManager.getWifiState() == 2) { Toast.makeText(context,"亲,Wifi正在开启,不用再开了", Toast.LENGTH_SHORT).show(); }else{ Toast.makeText(context,"亲,Wifi已经开启,不用再开了", Toast.LENGTH_SHORT).show(); } } // 关闭WIFI public void closeWifi(Context context) { if (mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(false); }else if(mWifiManager.getWifiState() == 1){ Toast.makeText(context,"亲,Wifi已经关闭,不用再关了", Toast.LENGTH_SHORT).show(); }else if (mWifiManager.getWifiState() == 0) { Toast.makeText(context,"亲,Wifi正在关闭,不用再关了", Toast.LENGTH_SHORT).show(); }else{ Toast.makeText(context,"请重新关闭", Toast.LENGTH_SHORT).show(); } } // 检查当前WIFI状态 public void checkState(Context context) { if (mWifiManager.getWifiState() == 0) { Toast.makeText(context,"Wifi正在关闭", Toast.LENGTH_SHORT).show(); } else if (mWifiManager.getWifiState() == 1) { Toast.makeText(context,"Wifi已经关闭", Toast.LENGTH_SHORT).show(); } else if (mWifiManager.getWifiState() == 2) { Toast.makeText(context,"Wifi正在开启", Toast.LENGTH_SHORT).show(); } else if (mWifiManager.getWifiState() == 3) { Toast.makeText(context,"Wifi已经开启", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(context,"没有获取到WiFi状态", Toast.LENGTH_SHORT).show(); } } // 锁定WifiLock public void acquireWifiLock() { mWifiLock.acquire(); } // 解锁WifiLock public void releaseWifiLock() { // 判断时候锁定 if (mWifiLock.isHeld()) { mWifiLock.acquire(); } } // 创建一个WifiLock public void creatWifiLock() { mWifiLock = mWifiManager.createWifiLock("Test"); } // 得到配置好的网络 public List<WifiConfiguration> getConfiguration() { return mWifiConfiguration; } // 指定配置好的网络进行连接 public void connectConfiguration(int index) { // 索引大于配置好的网络索引返回 if (index > mWifiConfiguration.size()) { return; } // 连接配置好的指定ID的网络 mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId, true); } public void startScan(Context context) { mWifiManager.startScan(); //得到扫描结果 List<ScanResult> results = mWifiManager.getScanResults(); // 得到配置好的网络连接 mWifiConfiguration = mWifiManager.getConfiguredNetworks(); if (results == null) { if(mWifiManager.getWifiState()==3){ Toast.makeText(context,"当前区域没有无线网络",Toast.LENGTH_SHORT).show(); }else if(mWifiManager.getWifiState()==2){ Toast.makeText(context,"wifi正在开启,请稍后扫描", Toast.LENGTH_SHORT).show(); }else{Toast.makeText(context,"WiFi没有开启", Toast.LENGTH_SHORT).show(); } } else { mWifiList = new ArrayList(); for(ScanResult result : results){ if (result.SSID == null || result.SSID.length() == 0 || result.capabilities.contains("[IBSS]")) { continue; } boolean found = false; for(ScanResult item:mWifiList){ if(item.SSID.equals(result.SSID)&&item.capabilities.equals(result.capabilities)){ found = true;break; } } if(!found){ mWifiList.add(result); } } } } // 得到网络列表 public List<ScanResult> getWifiList() { return mWifiList; } // 查看扫描结果 public StringBuilder lookUpScan() { StringBuilder stringBuilder = new StringBuilder(); for (int i = 0; i < mWifiList.size(); i++) { stringBuilder .append("Index_" + new Integer(i + 1).toString() + ":"); // 将ScanResult信息转换成一个字符串包 // 其中把包括:BSSID、SSID、capabilities、frequency、level stringBuilder.append((mWifiList.get(i)).toString()); stringBuilder.append("/n"); } return stringBuilder; } // 得到MAC地址 public String getMacAddress() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress(); } // 得到接入点的BSSID public String getBSSID() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID(); } // 得到IP地址 public int getIPAddress() { return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress(); } // 得到连接的ID public int getNetworkId() { return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId(); } // 得到WifiInfo的所有信息包 public String getWifiInfo() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString(); } // 添加一个网络并连接 public void addNetwork(WifiConfiguration wcg) { int wcgID = mWifiManager.addNetwork(wcg); boolean b = mWifiManager.enableNetwork(wcgID, true); System.out.println("a--" + wcgID); System.out.println("b--" + b); } // 断开指定ID的网络 public void disconnectWifi(int netId) { mWifiManager.disableNetwork(netId); mWifiManager.disconnect(); } public void removeWifi(int netId) { disconnectWifi(netId); mWifiManager.removeNetwork(netId); } //然后是一个实际应用方法,只验证过没有密码的情况: public WifiConfiguration CreateWifiInfo(String SSID, String Password, int Type) { WifiConfiguration config = new WifiConfiguration(); config.allowedAuthAlgorithms.clear(); config.allowedGroupCiphers.clear(); config.allowedKeyManagement.clear(); config.allowedPairwiseCiphers.clear(); config.allowedProtocols.clear(); config.SSID = "\"" + SSID + "\""; WifiConfiguration tempConfig = this.IsExsits(SSID); if(tempConfig != null) { mWifiManager.removeNetwork(tempConfig.networkId); } if(Type == 1) //WIFICIPHER_NOPASS { config.wepKeys[0] = ""; config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.wepTxKeyIndex = 0; } if(Type == 2) //WIFICIPHER_WEP { config.hiddenSSID = true; config.wepKeys[0]= "\""+Password+"\""; config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104); config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.wepTxKeyIndex = 0; } if(Type == 3) //WIFICIPHER_WPA { config.preSharedKey = "\""+Password+"\""; config.hiddenSSID = true; config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); //config.allowedProtocols.set(WifiConfiguration.Protocol.WPA); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP); config.status = WifiConfiguration.Status.ENABLED; } return config; } private WifiConfiguration IsExsits(String SSID) { List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks(); for (WifiConfiguration existingConfig : existingConfigs) { if (existingConfig.SSID.equals("\""+SSID+"\"")) { return existingConfig; } } return null; } }
把代码都复制上去,就可以看到效果啦,是不是特别的爽,感觉好高端大气牛逼?如果觉得此篇文章对您有所帮助,请别忘记关注或点赞,博主还会继续发表更有趣的文章,有问题可以留言,望各位每天进步一点点,学无止境!!
相关文章推荐
- Android开发之显示输入密码功能
- Android开发--WIFI输入密码Dialog的实现
- Android程序开发之防止密码输入错误 密码明文显示功能
- Android平台开发-WIFI function porting-WIFI功能移植
- Android平台开发-WIFI function porting-WIFI功能移植
- Android平台开发-WIFI function porting-WIFI功能移植
- Android平台开发-WIFI function porting-WIFI功能移植
- Android平台开发-WIFI function porting-WIFI功能移植
- Android开发实践:WIFI扫描功能的封装
- Android WIFI功能开发<2>对WIfi的操作
- Android平台开发-WIFI function porting-WIFI功能移植
- Android开发之扫描附近wifi热点并列表显示
- Android 开发(如何动态设置EditText输入的文字为密码形式)
- Android开发实践:WIFI连接功能的封装
- Android平台开发-WIFI function porting-WIFI功能移植
- Android开发之--(WIFI,蓝牙,电池,背光,SD卡,摄像头,按键,MIC,重力感应等)功能的简单使用
- Android平台开发-WIFI function porting-WIFI功能移植
- Android平台开发-WIFI function porting-WIFI功能移植
- 【android】Android Wi-Fi Direct 开发指南
- Android平台开发-WIFI function porting-WIFI功能移植