webview网页视图demo

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.helloworld">
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.HelloWorld">

        <activity android:name="com.example.helloworld.TestWebView">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/webviewtv"/>

    <WebView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/webviewwv"/>
</LinearLayout>

public class TestWebView extends AppCompatActivity {
    TextView tv;
    WebView wv;
    String url="https://bilibili.com";
    long exitTime;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.testwebview);
        init1();
    }

    public void init1() {
        tv = findViewById(R.id.webviewtv);
        wv = findViewById(R.id.webviewwv);
        wv.setWebChromeClient(new WebChromeClient(){
            @Override
            public void onReceivedTitle(WebView view, String title) {
                super.onReceivedTitle(view, title);
                tv.setText(title);
            }
//            @Override
//            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
//                view.loadUrl(request.getUrl().toString());
//                return true;
//            }
        });
        
        wv.setWebViewClient(new WebViewClient(){
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                view.loadUrl(url);
                return true;
            }
        });
        
        WebSettings setting=wv.getSettings();
        setting.setUseWideViewPort(true);
        setting.setLoadWithOverviewMode(true);
        setting.setBuiltInZoomControls(true);
        setting.setDisplayZoomControls(false);
        setting.setSupportZoom(true);
        setting.setJavaScriptEnabled(true);
        wv.loadUrl(url);
    }

    @Override
    public void onBackPressed() {
        if(wv.canGoBack()){
            wv.goBack();
        }else{
            if(System.currentTimeMillis()-exitTime>2000){
                Toast.makeText(getApplicationContext(),"再按一次退出程序",Toast.LENGTH_SHORT).show();
                exitTime=System.currentTimeMillis();
            }else{
                super.onBackPressed();
            }
        }
    }
}

本文地址：https://blog.csdn.net/weixin_43292547/article/details/110671536