qt android中使用webview

qt5.9以后qml引入了webview，所以要想在安卓中使用webview只能使用此模块

但是本人不熟悉qml,只能采用widget和qml混合编程的方式，经过大量的调试运行，终于成功了，特此记录一下

#-------------------------------------------------
#
# Project created by QtCreator 2020-11-16T21:40:17
#
#-------------------------------------------------

QT       += core gui quickwidgets qml quick webview

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = FileTest
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

CONFIG += c++11

SOURCES += \
        main.cpp \
        mainwindow.cpp

HEADERS += \
        mainwindow.h

FORMS += \
        mainwindow.ui

CONFIG += mobility
MOBILITY = 


# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

RESOURCES += \
    res.qrc

#include "mainwindow.h"
#include <QApplication>
#include <QtWebView/QtWebView>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QtWebView::initialize();
    MainWindow w;
    w.show();

    return a.exec();
}

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QWidget>
#include <QQuickItem>

namespace Ui {
class MainWindow;
}

class MainWindow : public QWidget
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = nullptr);
    ~MainWindow();

private:
    Ui::MainWindow *ui;
    QQuickItem *item;
signals:
    void loadUrl(QString url);
public slots:
    void onGo();
};

#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QQuickWidget>
#include <QVBoxLayout>
#include <QMetaObject>
MainWindow::MainWindow(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QQuickWidget* quickWidget = new QQuickWidget();
    quickWidget->setSource(QUrl("qrc:/main.qml"));
    ui->widget->layout()->addWidget(quickWidget);

    item=quickWidget->rootObject();
    connect(this,SIGNAL(loadUrl(QString)),item,SIGNAL(loadUrl(QString)));

    connect(ui->goBt,&QPushButton::clicked,this,&MainWindow::onGo);
}

MainWindow::~MainWindow()
{
    delete ui;
}
void MainWindow::onGo()
{
    QString url=ui->lineEdit->text();
    if(!url.startsWith("https://"))url="https://"+ui->lineEdit->text();
    emit loadUrl(url);
}

import QtQuick 2.2
import QtWebView 1.0
Rectangle {

    id : root;
    width: parent.width
    height: parent.height
    signal loadUrl(string url)
    WebView {
        id: webView
        width: parent.width
        height: parent.height
        anchors.fill: parent
        url: "https://www.baidu.com"
    }
    function onLoadUrl(str){
        webView.url=str;
        //webView.reload();
    }
    Component.onCompleted: {
        // employer 信号 连接 多个槽函数或信号
        root.loadUrl.connect(onLoadUrl)
    }
}