贡献自己写的，在linux，arm上的屏幕搜索wifi并连接（qt，多选择，wifi按信号排列）

先上代码！！

#include "widget.h"

#include "ui_widget.h"

#include <QVBoxLayout>

#include <QMessageBox>

Widget::Widget(QWidget *parent) :

QWidget(parent),

ui(new Ui::Widget)

{

ui->setupUi(this);

int i =0;

int j =0;

int t =0;

QVBoxLayout *groupBoxLayout;

groupBoxLayout = new QVBoxLayout;

system("iwlist wlan1 scan >./temp ");

system("grep -E \"SSID|Quality\" temp >./grepTemp");

system("grep -v \"x00\" grepTemp >./temp");

QString fileName;

fileName = "/home/c/qt/WifiSelect/temp";

QFile file(fileName);

if (!file.open(QIODevice::ReadOnly | QIODevice::Text))

{

qDebug()<<"!";

return;

}

QTextStream in(&file);

QString line = in.readLine();

while (i<20)

{

line = in.readLine();

for(t=27;t<line.size()-1;t++) //take off other words

{

wifiName[i] +=line[t];

}

line = in.readLine();

for(t=28;t<30;t++) //take off other words

{

temp[i] +=line[t];

}

i++;

}

for(i=0;i<20;i++)

{

qDebug()<<"temp"<<temp[i];

qDebug()<<"name"<<wifiName[i];

}

for(i=0;i<19;i++)

{

for(j=1;j<20;j++)

{

if(temp[i]<temp[j])

{

transfer = temp[i];

temp[i] = temp[j];

temp[j] = transfer;

transfer =wifiName[i];

wifiName[i] = wifiName[j];

wifiName[j] = transfer;

}

}

}

i =0;

j =0;

int k=0;

while(i<10)

{

if(wifiName[j] == '\0')

{

// break;

k++;

if(k ==10)

{

qDebug()<<"false";

QMessageBox messageBox;

messageBox.setText(tr("无法搜索WLAN信号"));

messageBox.setIcon(QMessageBox::Warning);

messageBox.exec();

}

}

else if(!(wifiName[j] =='\0'))

{

radioBtn[i] = new QRadioButton;

radioBtn[i]->setText(wifiName[j]);

groupBoxLayout->addWidget(radioBtn[i]);

i++;

}

j++;

}

/*

QTextStream in(&file);

QString line = in.readLine();

while (i<10)

{

line = in.readLine();

QString temp;

for(t=27;t<line.size()-1;t++) //take off other words

{

temp +=line[t];

}

qDebug()<<temp;

if(!(temp =='\0'))

{

radioBtn[i] = new QRadioButton;

radioBtn[i]->setText(temp);

groupBoxLayout->addWidget(radioBtn[i]);

i++;

}

}

*/

ui->groupBox->setLayout(groupBoxLayout);

// system("ping 192.168.0.223");

}

Widget::~Widget()

{

delete ui;

}

void Widget::on_cancelBtn_clicked()

{

this->close();

}

void Widget::on_connectBtn_clicked()

{

if(radioBtn[0]->isChecked())

{

QString wifiName = radioBtn[0]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[1]->isChecked())

{

QString wifiName = radioBtn[1]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[2]->isChecked())

{

QString wifiName = radioBtn[2]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[3]->isChecked())

{

QString wifiName = radioBtn[3]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[4]->isChecked())

{

QString wifiName = radioBtn[4]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[5]->isChecked())

{

QString wifiName = radioBtn[5]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[6]->isChecked())

{

QString wifiName = radioBtn[6]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[7]->isChecked())

{

QString wifiName = radioBtn[7]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[8]->isChecked())

{

QString wifiName = radioBtn[8]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

if(radioBtn[9]->isChecked())

{

QString wifiName = radioBtn[9]->text();

QString wifiConnect = tr("iwconfig wlan1 essid \"%1\" ").arg(wifiName);

system(wifiConnect.toAscii());

}

QMessageBox messageBox;

messageBox.setText(tr("连接成功！"));

messageBox.exec();

this->close();

}

效果：


欢迎提问，请叫我红领巾

头文件：

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QFile>
#include <QDebug>
#include <QRadioButton>

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT
    
public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

    
private:
    Ui::Widget *ui;
    QString transfer;
    QString temp[20];
    QString wifiName[20];
    QRadioButton *radioBtn[10];

private slots:
    void on_cancelBtn_clicked();
    void on_connectBtn_clicked();
};

#endif // WIDGET_H