在安卓應(yīng)用中渲染HTML并實(shí)現(xiàn)分頁，你可以使用WebView組件來加載和顯示HTML內(nèi)容，并結(jié)合JavaScript和CSS來實(shí)現(xiàn)分頁效果。下面是一個(gè)簡單的示例代碼，演示如何在安卓應(yīng)用中實(shí)現(xiàn)HTML渲染和分頁功能：

1. 在布局文件（例如activity_main.xml）中添加一個(gè)WebView組件：

xmlCopy code

1. 在Java代碼中加載HTML內(nèi)容并設(shè)置分頁效果：

javaCopy code
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    private WebView webView;

    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        webView = findViewById(R.id.webview);

        // 設(shè)置WebView的配置
        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true); // 啟用JavaScript

        // 設(shè)置WebView的客戶端
        webView.setWebViewClient(new WebViewClient());
        webView.setWebChromeClient(new WebChromeClient());

        // 加載HTML內(nèi)容
        String htmlContent = "
Hello, WebView!
This is some sample HTML content.
";
        webView.loadDataWithBaseURL(null, htmlContent, "text/html", "UTF-8", null);

        // 執(zhí)行JavaScript腳本以實(shí)現(xiàn)分頁效果
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);

                // 執(zhí)行JavaScript腳本以實(shí)現(xiàn)分頁效果
                String javascript = "javascript:(function() {" +
                        "    var maxScrollHeight = document.documentElement.scrollHeight;" +
                        "    var currentPage = 0;" +
                        "    var pageSize = window.innerHeight;" +
                        "    var pageCount = Math.ceil(maxScrollHeight / pageSize);" +
                        "    function nextPage() {" +
                        "        if (currentPage < pageCount - 1) {" +
                        "            currentPage++;" +
                        "            window.scrollTo(0, currentPage * pageSize);" +
                        "        }" +
                        "    }" +
                        "    function previousPage() {" +
                        "        if (currentPage > 0) {" +
                        "            currentPage--;" +
                        "            window.scrollTo(0, currentPage * pageSize);" +
                        "        }" +
                        "    }" +
                        "    window.addEventListener('keyup', function(event) {" +
                        "        if (event.key === 'ArrowRight' || event.key === 'PageDown') {" +
                        "            nextPage();" +
                        "        } else if (event.key === 'ArrowLeft' || event.key === 'PageUp') {" +
                        "            previousPage();" +
                        "        }" +
                        "    });" +
                        "})();";
                webView.loadUrl(javascript);
            }
        });
    }
}

以上代碼中，我們使用WebView加載了一個(gè)簡單的HTML內(nèi)容，并在WebView的onPageFinished回調(diào)中執(zhí)行了JavaScript腳本來實(shí)現(xiàn)分頁效果。JavaScript腳本監(jiān)聽了鍵盤事件，當(dāng)用戶按下"ArrowRight"、"PageDown"鍵時(shí)，會(huì)切換到下一頁；當(dāng)用戶按下"ArrowLeft"、"PageUp"鍵時(shí)，會(huì)切換到上一頁。

請注意，為了使JavaScript代碼生效，我們需要在AndroidManifest.xml文件中添加android.permission.INTERNET權(quán)限。

文章名稱：安卓渲染Html并做分頁，你學(xué)會(huì)了嗎？
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