[移动开发]网络加载页面使用

首先添加网络权限

<uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

其中还得添加

  <application
        android:usesCleartextTraffic="true"

</application>

不然网页无法加载

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.webviewdemo.WebViewActivity"
    >
   <WebView
       android:id="@+id/webview"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       >

   </WebView>

</LinearLayout>

package com.example.webviewdemo;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.Environment;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class WebViewActivity extends AppCompatActivity {

    private WebView mwebView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_web_view);

        mwebView = findViewById(R.id.webview);
        mwebView.loadUrl("http://www.baidu.com/");
       // mwebView.loadUrl("file://" + Environment.getExternalStorageDirectory().getPath() +"/1/index.html");

        mwebView.setWebViewClient(new WebViewClient());
    }
}