ANDROID:-无法使用ScanResult获取可用wifi列表
我正在尝试按ScanResult列出可用的wifi网络 有人能告诉我我的代码出了什么问题吗?我没有得到想要的输出 这是我的密码:ANDROID:-无法使用ScanResult获取可用wifi列表,android,broadcastreceiver,android-wifi,wifimanager,Android,Broadcastreceiver,Android Wifi,Wifimanager,我正在尝试按ScanResult列出可用的wifi网络 有人能告诉我我的代码出了什么问题吗?我没有得到想要的输出 这是我的密码: public class Activity_scanwifi extends AppCompatActivity { Switch aSwitch; TextView textView; WifiManager wifiManager; WifiInfo wifiInfo; String info; @Override
public class Activity_scanwifi extends AppCompatActivity {
Switch aSwitch;
TextView textView;
WifiManager wifiManager;
WifiInfo wifiInfo;
String info;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scanwifi);
aSwitch=(Switch) findViewById(R.id.s);
textView=(TextView) findViewById(R.id.textView);
wifiManager=(WifiManager) getSystemService(Context.WIFI_SERVICE);
wifiManager.startScan();
aSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// switch on
if(isChecked && ! wifiManager.isWifiEnabled())
{
wifiManager.setWifiEnabled(true);
wifiInfo=wifiManager.getConnectionInfo();
}
// switch off
if (!isChecked && wifiManager.isWifiEnabled())
{
wifiManager.setWifiEnabled(false);
}
}
});
broadcast b=new broadcast();
registerReceiver(b,new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
}
public class broadcast extends BroadcastReceiver{
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void onReceive(Context context, Intent intent) {
// onReceive method updates any change in the available wifi
StringBuffer stringBuffer=new StringBuffer();
/// List<WifiConfiguration> list=wifiManager.getConfiguredNetworks();
List<ScanResult> list=wifiManager.getScanResults();
//for(WifiConfiguration wifiConfiguration : list)
for(ScanResult scanResult : list)
{
stringBuffer.append(scanResult);
}
textView.setText(stringBuffer);
}
}
}
公共课堂活动\u scanwifi扩展应用程序活动{
开关;
文本视图文本视图;
WifiManager WifiManager;
WifiInfo WifiInfo;
字符串信息;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.scanwifi);
aSwitch=(开关)findViewById(R.id.s);
textView=(textView)findViewById(R.id.textView);
wifiManager=(wifiManager)getSystemService(Context.WIFI_服务);
wifiManager.startScan();
setOnCheckedChangeListener(新建CompoundButton.OnCheckedChangeListener(){
@凌驾
检查更改后的公共无效(复合按钮视图,布尔值已检查){
//打开
如果(isChecked&!wifiManager.isWifiEnabled())
{
wifiManager.setWifiEnabled(true);
wifiInfo=wifiManager.getConnectionInfo();
}
//关掉
如果(!isChecked&&wifiManager.isWifiEnabled())
{
wifiManager.setWifiEnabled(false);
}
}
});
广播b=新广播();
registerReceiver(b,新的意向过滤器(WifiManager.SCAN\u RESULTS\u AVAILABLE\u ACTION));
}
公共类广播扩展广播接收机{
@RequiresApi(api=Build.VERSION\u code.LOLLIPOP)
@凌驾
公共void onReceive(上下文、意图){
//onReceive方法更新可用wifi中的任何更改
StringBuffer StringBuffer=新的StringBuffer();
///List List=wifiManager.getConfiguredNetworks();
List List=wifiManager.getScanResults();
//用于(WifiConfiguration WifiConfiguration:list)
用于(扫描结果扫描结果:列表)
{
追加(扫描结果);
}
setText(stringBuffer);
}
}
}
试试这个代码
WifiList.java
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
import butterknife.BindView;
import butterknife.ButterKnife;
public class WifiList extends Activity {
WifiManager mWifiManager;
ArrayList<String> mWifiList;
@BindView(R.id.lst_wifilist)
ListView lst_wifilist;
@BindView(R.id.ll_scan)
LinearLayout ll_scan;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_wifilist);
ButterKnife.bind(this);
mWifiList = new ArrayList<>();
mWifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
mWifiList.clear();
scanNetwork();
}
private void scanNetwork() {
registerReceiver(mWifiScanReceiver,
new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
mWifiManager.startScan();
}
private final BroadcastReceiver mWifiScanReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context c, Intent intent) {
if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
List<ScanResult> mScanResults = mWifiManager.getScanResults();
// add your logic here
mWifiList.clear();
for (int i = 0; i < mScanResults.size(); i++) {
Log.e("Scanned Wifi Name :- ", mScanResults.get(i).SSID);
mWifiList.add(mScanResults.get(i).SSID);
WifiListAdapter adapter = new WifiListAdapter(WifiList.this, mWifiList);
lst_wifilist.setAdapter(adapter);
}
}
}
};
}
导入android.app.Activity;
导入android.content.BroadcastReceiver;
导入android.content.Context;
导入android.content.Intent;
导入android.content.IntentFilter;
导入android.net.wifi.ScanResult;
导入android.net.wifi.WifiConfiguration;
导入android.net.wifi.WifiManager;
导入android.os.Bundle;
导入android.support.annotation.Nullable;
导入android.util.Log;
导入android.view.view;
导入android.widget.AdapterView;
导入android.widget.LinearLayout;
导入android.widget.ListView;
导入java.util.ArrayList;
导入java.util.List;
导入butterknife.BindView;
进口毛刀,毛刀;
公共类WifiList扩展活动{
WifiManager-mWifiManager;
阵列列表;
@BindView(R.id.lst_wifilist)
ListView lst_wifilist;
@BindView(R.id.ll\U扫描)
线性布局ll_扫描;
@凌驾
创建时受保护的void(@Nullable Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_wifilist);
把(这个)绑起来;
mWifiList=newarraylist();
mWifiManager=(WifiManager)getApplicationContext().getSystemService(Context.WIFI_服务);
mWifiList.clear();
扫描网络();
}
专用网络(){
寄存器接收器(mWifiScanReceiver,
新的IntentFilter(WifiManager.SCAN\u RESULTS\u AVAILABLE\u ACTION));
mWifiManager.startScan();
}
private final BroadcastReceiver mWifiScanReceiver=新的BroadcastReceiver(){
@凌驾
接收时公共无效(上下文c,意图){
if(intent.getAction().equals(WifiManager.SCAN\u RESULTS\u AVAILABLE\u ACTION)){
List mScanResults=mWifiManager.getScanResults();
//在这里添加您的逻辑
mWifiList.clear();
对于(int i=0;i
AndroidMenifest.xml
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
尝试以下代码: 清单权限: android:name=“android.permission.ACCESS\u WIFI\u STATE” android:name=“android.permission.CHANGE\u WIFI\u STATE” 活动
public class MainActivity extends Activity implements OnClickListener {
Button setWifi;
ListView listViwProvider;
WifiManager wifiManager;
WifiReceiver receiverWifi;
List<ScanResult> wifiList;
List<String> listOfProvider;
ListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listOfProvider = new ArrayList<String>();
listViwProvider = (ListView) findViewById(R.id.list_view_wifi);
setWifi = (Button) findViewById(R.id.btn_wifi);
setWifi.setOnClickListener(this);
wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
if (wifiManager.isWifiEnabled() == true) {
setWifi.setText("ON");
scaning();
}else {
wifiManager.setWifiEnabled(true);
setWifi.setText("ON");
scaning();
}
listViwProvider.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
ImportDialog action = new ImportDialog(MainActivity.this, (wifiList.get(position)).toString());
action.showDialog();
}
});
}
private void scaning() {
receiverWifi = new WifiReceiver();
registerReceiver(receiverWifi, new IntentFilter(
WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
wifiManager.startScan();
}
@Override
public void onClick(View arg0) {
if (wifiManager.isWifiEnabled() == true) {
wifiManager.setWifiEnabled(false);
setWifi.setText("OFF");
listViwProvider.setVisibility(ListView.GONE);
}
else if (wifiManager.isWifiEnabled() == false) {
wifiManager.setWifiEnabled(true);
setWifi.setText("ON");
listViwProvider.setVisibility(ListView.VISIBLE);
scaning();
}
}
protected void onPause() {
super.onPause();
unregisterReceiver(receiverWifi);
}
protected void onResume() {
registerReceiver(receiverWifi, new IntentFilter(
WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
super.onResume();
}
class WifiReceiver extends BroadcastReceiver {
public void onReceive(Context c, Intent intent) {
wifiList = wifiManager.getScanResults();
Collections.sort(wifiList, new Comparator<ScanResult>() {
@Override
public int compare(ScanResult lhs, ScanResult rhs) {
return (lhs.level > rhs.level ? -1
: (lhs.level == rhs.level ? 0 : 1));
}
});
listOfProvider.clear();
String providerName;
for (int i = 0; i < wifiList.size(); i++) {
providerName = (wifiList.get(i).SSID).toString()
+"\n"+(wifiList.get(i).BSSID).toString();
listOfProvider.add(providerName);
}
adapter = new ListAdapter(MainActivity.this, listOfProvider);
listViwProvider.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
}
}
public类MainActivity扩展活动实现OnClickListener{
按钮设置WiFi;
ListView listViwProvider;
WifiManager WifiManager;
无线接收器接收器;
列表wifiList;
供应商列表;
列表适配器;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listOfProvider=newArrayList();
listViwProvider=(ListView)findViewById(R.id.list\u view\u wifi);
setWifi=(按钮)findViewById(R.id.btn_wifi);
setWifi.setOnClickListener(这个);
wifiManager=(wifiManager)this.getSystemService(Context.WIFI_服务);
if(wifiManager.isWifiEnabled()==true){
setWifi.setText(“打开”);
扫描();
}否则{
wifiManager.setWifiEnabled(true);
setWifi.setText(“打开”);
扫描();
}
列表
public class ListAdapter extends ArrayAdapter<String> {
Activity mActivity;
List<String> wifiName;
private LayoutInflater inflater;
public ListAdapter(Activity a, List<String> wifiName) {
super(a, R.layout.single_list, wifiName);
mActivity = a;
inflater = LayoutInflater.from(mActivity);
this.wifiName = wifiName;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView = inflater.inflate(R.layout.single_list, parent, false);
TextView wifiProvider = (TextView) convertView
.findViewById(R.id.txt_wifi_provider);
wifiProvider.setText(wifiName.get(position));
return convertView;
}
}
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.net.Uri;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiManager;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import java.util.List;
public class MainActivity extends Activity {
private StringBuilder sb = new StringBuilder();
List<ScanResult> scanList;
TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView)findViewById(R.id.textView);
getWifiNetworksList();
}
private void getWifiNetworksList(){
IntentFilter filter = new IntentFilter();
filter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
final WifiManager wifiManager =
(WifiManager)getApplicationContext().getSystemService(Context.WIFI_SERVICE);
wifiManager.startScan();
registerReceiver(new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
sb = new StringBuilder();
scanList = wifiManager.getScanResults();
sb.append("\n Number Of Wifi connections :" + " " +scanList.size()+"\n\n");
for(int i = 0; i < scanList.size(); i++){
sb.append(new Integer(i+1).toString() + ". ");
sb.append((scanList.get(i)).toString());
sb.append("\n\n");
}
Toast.makeText(getApplicationContext(),""+sb.toString(),Toast.LENGTH_LONG).show();
textView.setText(sb);
}
},filter);
}
}
Manifest:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />