Android wifi开启扫描连接
作者：互联网
1.开关按钮UI（switch_bluetooth）
<?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="@dimen/item_hight"
android:gravity="center_vertical"
android:orientation="horizontal">
//开关按钮
<Switch
android:track="@drawable/switch_selector"
android:thumb="@drawable/selector_thumb_check"
android:id="@+id/swtich"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>2.wifi utils（WifiUtil）
public class WifiUtil {
private final WifiManager mWifiManager;
private final WifiInfo mWifiInfo;
private static WifiUtil wifiUtil;
private List<WifiConfiguration> mWifiConfiguration;
public Context mcontext;
private final ConnectivityManager mConnectivityManager;
public static final int INVALID_NET_ID = -1;
private static final Pattern HEX_PATTERN = Pattern.compile("^[0-9A-F]+$");
private WifiUtil(Context context) {
mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
mWifiInfo = mWifiManager.getConnectionInfo();
mcontext = context;
mConnectivityManager = (ConnectivityManager) context.getSystemService(
Context.CONNECTIVITY_SERVICE);
}
public static WifiUtil getInstance(Context context) {
if (wifiUtil == null) {
wifiUtil = new WifiUtil(context);
}
return wifiUtil;
}
//open wifi
public void openWiFi() {
if (!isWifiEnable() && null != mWifiManager) {
mWifiManager.setWifiEnabled(true);
}
}
//close wifi
public void closeWiFi() {
if (isWifiEnable() && null != mWifiManager) {
mWifiManager.setWifiEnabled(false);
}
}
public boolean isWifiEnable() {
return mWifiManager.isWifiEnabled();
}
@SuppressLint("MissingPermission")
public List<WifiConfiguration> getLocalWifi() {
mWifiConfiguration = mWifiManager.getConfiguredNetworks();
return mWifiConfiguration;
}
//connect local wifi
public void connectConfiguration(WifiConfiguration wifiConfiguration) {
mWifiManager.enableNetwork(wifiConfiguration.networkId, true);
}
public void startScan() {
if (null != mWifiManager) {
mWifiManager.startScan();
}
}
public List<ScanResult> getScanResults() {
if (null != mWifiManager) {
return mWifiManager.getScanResults();
}
return null;
}
//wifihot isopen
public boolean isApOn() {
WifiManager wifimanager = (WifiManager) mcontext.getSystemService(mcontext.WIFI_SERVICE);
try {
Method method = wifimanager.getClass().getDeclaredMethod("isWifiApEnabled");
method.setAccessible(true);
return (Boolean) method.invoke(wifimanager);
} catch (Throwable ignored) {
}
return false;
}
}3.开关按钮java（WifiSwitchView）
public class WifiSwitchView extends LinearLayout {
private final Switch swtich;
public WifiSwitchView(Context paramContext, AttributeSet paramAttributeSet) {
super(paramContext, paramAttributeSet);
View view = View.inflate(paramContext, R.layout.switch_bluetooth, this);
swtich = view.findViewById(R.id.swtich);
if (WifiUtil.getInstance(getContext()).isWifiEnable()) {
swtich.setChecked(true);
} else {
swtich.setChecked(false);
}
swtich.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (swtich.isChecked()) {
WifiUtil.getInstance(getContext()).openWiFi();
Toast.makeText(paramContext, "开启wifi", Toast.LENGTH_SHORT).show();
} else {
WifiUtil.getInstance(getContext()).closeWiFi();
Toast.makeText(paramContext, "关闭wifi", Toast.LENGTH_SHORT).show();
}
}
});
}44.扫描按钮UI（drop_down_more）
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/bluetooth_ll_retrivel"
android:layout_width="@dimen/item_short_width"
android:layout_height="@dimen/item_short_hight"
android:background="@drawable/round_light"
android:paddingLeft="@dimen/padding_start"
android:paddingRight="@dimen/padding_start"
android:orientation="horizontal">
<TextView
android:id="@+id/bluetooth_tv_retrivel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_gravity="center"
android:layout_weight="1"
android:text="@string/bluetooth_equipment_retrivel"
android:textSize="@dimen/middle_title"
android:gravity="center_vertical"
android:textColor="@color/text_dark" />
</LinearLayout> 5.弹框显示扫描UI （pop_wifiwindow）
<?xml version="1.0" encoding="utf-8"?>
<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:id="@+id/wifi_rl"
android:background="#ffffff"
android:layout_height="400dp">
</androidx.recyclerview.widget.RecyclerView>6.弹框显示扫描itemUI（pop_wifirecy_item）
<?xml version="1.0" encoding="utf-8"?>
<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:id="@+id/wifi_rl"
android:background="#ffffff"
android:layout_height="400dp">
</androidx.recyclerview.widget.RecyclerView>7.wifi适配器（WifiRecyclerAdapter）
package com.example.baoya.adapter;
import android.content.Context;
import android.net.wifi.ScanResult;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.baoya.R;
import java.util.List;
public class WifiRecyclerAdapter extends RecyclerView.Adapter<WifiRecyclerAdapter.ViewHolder>{
Context context;
List<ScanResult> scanResults;
public WifiRecyclerAdapter(Context context, List<ScanResult> scanResults) {
this.context=context;
this.scanResults =scanResults;
}
@NonNull
@Override
public WifiRecyclerAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
return new ViewHolder(LayoutInflater.from(context).inflate(R.layout.pop_wifirecy_item,parent,false));
}
@Override
public void onBindViewHolder(@NonNull WifiRecyclerAdapter.ViewHolder holder, final int position) {
holder.wifi_name.setText(scanResults.get(position).SSID);
holder.wifi_recy.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (itemOnClick!=null){
itemOnClick.Success(position,scanResults.get(position).SSID);
}
}
});
}
@Override
public int getItemCount() {
return scanResults==null?0:scanResults.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView wifi_name;
RelativeLayout wifi_recy;
public ViewHolder(@NonNull View itemView) {
super(itemView);
wifi_recy = itemView.findViewById(R.id.wifi_recy);
wifi_name = itemView.findViewById(R.id.wifi_name);
}
}
public interface ItemOnClick{
void Success(int position,String ssid);
}
ItemOnClick itemOnClick;
public void setItemOnClick(ItemOnClick itemOnClick){
this.itemOnClick=itemOnClick;
}
}8.扫描显示java（WifiDeviceListView）
public class WifiDeviceListView extends LinearLayout {
private final LinearLayout bluetooth_ll_retrivel;
private PopupWindow popupWindow;
private final WifiManager mWifiManager;
private List<ScanResult> scanResults;
private List<ScanResult> arrlist;
private RecyclerView mWifi_rl;
private EditText mEd_password;
private WifiRecyclerAdapter wifiRecyclerAdapter;
public WifiDeviceListView(Context paramContext, AttributeSet paramAttributeSet) {
super(paramContext, paramAttributeSet);
//设备搜索页面
View view = View.inflate(paramContext, R.layout.drop_down_more, this);
bluetooth_ll_retrivel = view.findViewById(R.id.bluetooth_ll_retrivel);
//wifimanager
mWifiManager = (WifiManager) paramContext.getSystemService(WIFI_SERVICE);
//点击搜索
bluetooth_ll_retrivel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mWifiManager.isWifiEnabled()){
WifiUtil.getInstance(getContext()).startScan();
new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(2000);
if (mWifiManager.getWifiState()==WifiManager.WIFI_STATE_ENABLED){
mWifiManager.startScan();
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}).start();
}else{
if (arrlist!=null){
arrlist.clear();
}
Toast.makeText(paramContext, "先打开wifi", Toast.LENGTH_SHORT).show();
}
//弹窗
popwindow();
}
});
}
//广播
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)){
scanResults = mWifiManager.getScanResults();
Collections.sort(scanResults, new Comparator<ScanResult>() {
@Override
public int compare(ScanResult o1, ScanResult o2) {
return o2.level-o1.level;
}
});
Log.i("TAG", scanResults.toString());
if (scanResults != null) {
if (arrlist !=null){
arrlist.clear();
}
//判断名称不能为空和重复
for (int i = 0; i < scanResults.size(); i++) {
if ((!scanResults.get(i).SSID.equals("")||!scanResults.get(i).SSID.isEmpty())){
arrlist.add(scanResults.get(i));
for (int j = 0; j <arrlist.size()-1 ; j++) {
for (int k = arrlist.size()-1; k >j ; k--) {
if (arrlist.get(j).SSID.equals(arrlist.get(k).SSID)){
arrlist.remove(arrlist.get(j));
}
}
}
}
}
wifiRecyclerAdapter.notifyDataSetChanged();
}
}
}
};
public void popwindow() {
View view = LayoutInflater.from(getContext()).inflate(R.layout.pop_wifiwindow, null);
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
intentFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
getContext().registerReceiver(broadcastReceiver,intentFilter);
popupWindow = new PopupWindow(view);
popupWindow.setFocusable(true);
Rect rect1 = new Rect();
arrlist=new ArrayList<>();
bluetooth_ll_retrivel.getWindowVisibleDisplayFrame(rect1);
mWifi_rl = view.findViewById(R.id.wifi_rl);
mWifi_rl.setLayoutManager(new LinearLayoutManager(getContext(),RecyclerView.VERTICAL,false));
Rect rect2 = new Rect();
bluetooth_ll_retrivel.getGlobalVisibleRect(rect2);
wifiRecyclerAdapter = new WifiRecyclerAdapter(getContext(), arrlist);
mWifi_rl.setAdapter(wifiRecyclerAdapter);
popupWindow.setWidth(bluetooth_ll_retrivel.getWidth());
popupWindow.setHeight(rect1.bottom - rect2.bottom);
popupWindow.showAsDropDown(bluetooth_ll_retrivel);
wifiRecyclerAdapter.setItemOnClick(new WifiRecyclerAdapter.ItemOnClick() {
@Override
public void Success(int position, String ssid) {
//点击连接wifi
showPopupWindow(ssid);
}
});
}
public void showPopupWindow(final String ssid){
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
final View inflate = LayoutInflater.from(getContext()).inflate(R.layout.pop_wifi_connection, null);
builder.setView(inflate);
builder.setTitle(ssid);
builder.setPositiveButton("连接", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mEd_password = inflate.findViewById(R.id.ed_password);
String password = mEd_password.getText().toString();
connectWifiPws(ssid,password);
Toast.makeText(getContext(), "正在连接", Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Toast.makeText(getContext(), "取消连接", Toast.LENGTH_SHORT).show();
}
});
builder.setCancelable(false);
builder.show();
}
/**
* 有密码连接
* @param ssid
* @param pws
*/
public void connectWifiPws(String ssid, String pws){
mWifiManager.disableNetwork(mWifiManager.getConnectionInfo().getNetworkId());
int netId = mWifiManager.addNetwork(getWifiConfig(ssid, pws, true));
mWifiManager.enableNetwork(netId, true);
}
/**
* 无密码连接
* @param ssid
*/
public void connectWifiNoPws(String ssid){
mWifiManager.disableNetwork(mWifiManager.getConnectionInfo().getNetworkId());
int netId = mWifiManager.addNetwork(getWifiConfig(ssid, "", false));
mWifiManager.enableNetwork(netId, true);
}
/**
* wifi设置
* @param ssid
* @param pws
* @param isHasPws
*/
private WifiConfiguration getWifiConfig(String ssid, String pws, boolean isHasPws){
WifiConfiguration config = new WifiConfiguration();
config.allowedAuthAlgorithms.clear();
config.allowedGroupCiphers.clear();
config.allowedKeyManagement.clear();
config.allowedPairwiseCiphers.clear();
config.allowedProtocols.clear();
config.SSID = "\"" + ssid + "\"";
WifiConfiguration tempConfig = isExist(ssid);
if(tempConfig != null) {
mWifiManager.removeNetwork(tempConfig.networkId);
}
if (isHasPws){
config.preSharedKey = "\""+pws+"\"";
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.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
config.status = WifiConfiguration.Status.ENABLED;
}else {
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
}
return config;
}
/**
* 得到配置好的网络连接
* @param ssid
* @return
*/
private WifiConfiguration isExist(String ssid) {
@SuppressLint("MissingPermission") List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks();
for (WifiConfiguration config : configs) {
if (config.SSID.equals("\""+ssid+"\"")) {
return config;
}
}
return null;
}9.连接wifiUI（pop_wifi_connection）
2.wifi utils（WifiUtil）2.wifi utils（WifiUtil）2.wifi utils（WifiUtil）2.wifi utils（WifiUtil）ee
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:id="@+id/pwss_word"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="输入密码:"
android:layout_marginLeft="15dp"
android:layout_centerVertical="true"
>
</TextView>
<EditText
android:id="@+id/ed_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/pwss_word"
android:layout_centerVertical="true"
>
</EditText>
</RelativeLayout>10.wifi连接监听器：连接上及时刷新SSID
//WiFi连接监听注册
IntentFilter wifiConnection = new IntentFilter();
wifiConnection.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
wifiConnection.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
getContext().registerReceiver(new WifiConnectionReceiver(),wifiConnection);class WifiConnectionReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//wifi连接上与否
if (intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
if (info.getState().equals(NetworkInfo.State.CONNECTED)) {
WifiManager wifiManager = (WifiManager) getActivity().getSystemService(WIFI_SERVICE);
WifiInfo connectionInfo = wifiManager.getConnectionInfo();
if (connectionInfo.getSSID()!=null) {
editText.setText(connectionInfo.getSSID());
}
}else if (info.getState().equals(NetworkInfo.State.DISCONNECTED)){
editText.setText("设备名称");
}
}
}
}标签：void,wifi,扫描,mWifiManager,new,Android,config,public 来源： https://blog.csdn.net/m0_58902390/article/details/119003335