webview提及
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/**
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* openDatabase Polyfill for Android 16+
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* 使用 localStorage 模拟 WebSQL 功能
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* 专门为 BM_USER 表设计
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*/
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(function() {
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'use strict';
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console.log('[openDatabase-polyfill] Initializing...');
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// 如果浏览器已经支持 openDatabase，则不需要 polyfill
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if (typeof openDatabase !== 'undefined') {
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console.log('[openDatabase-polyfill] Native openDatabase available, skipping polyfill');
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return;
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}
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console.log('[openDatabase-polyfill] Native openDatabase not available, installing polyfill');
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// 创建 polyfill
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window.openDatabase = function(name, version, displayName, estimatedSize, creationCallback) {
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console.log('[openDatabase-polyfill] Creating database:', name);
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// 调用创建回调
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if (creationCallback && typeof creationCallback === 'function') {
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try {
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creationCallback();
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} catch (e) {
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console.error('[openDatabase-polyfill] Error in creation callback:', e);
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}
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}
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// 返回数据库对象
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return {
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transaction: function(callback, errorCallback, successCallback) {
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console.log('[openDatabase-polyfill] Starting transaction');
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var tx = {
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executeSql: function(sql, params, successCb, errorCb) {
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console.log('[openDatabase-polyfill] Executing SQL:', sql);
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console.log('[openDatabase-polyfill] Parameters:', params);
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try {
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// 解析 SQL 语句
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var sqlUpper = sql.trim().toUpperCase();
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// CREATE TABLE
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if (sqlUpper.indexOf('CREATE TABLE') === 0) {
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console.log('[openDatabase-polyfill] CREATE TABLE detected');
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if (successCb) successCb(tx, { rowsAffected: 0, rows: { length: 0 } });
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return;
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}
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// INSERT
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if (sqlUpper.indexOf('INSERT INTO') === 0) {
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console.log('[openDatabase-polyfill] INSERT detected');
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// 从 localStorage 获取现有数据
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var users = JSON.parse(localStorage.getItem('BM_USER') || '[]');
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// 创建新用户对象
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var user = {
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ID: params[0],
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NAME: params[1],
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PASSWORD: params[2],
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LOGIN_NAME: params[3],
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ORG_ID: params[4],
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LOGGED: params[5]
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};
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users.push(user);
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localStorage.setItem('BM_USER', JSON.stringify(users));
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console.log('[openDatabase-polyfill] User inserted:', user);
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if (successCb) successCb(tx, { rowsAffected: 1, insertId: params[0], rows: { length: 0 } });
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return;
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}
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// SELECT
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if (sqlUpper.indexOf('SELECT') === 0) {
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console.log('[openDatabase-polyfill] SELECT detected');
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var users = JSON.parse(localStorage.getItem('BM_USER') || '[]');
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console.log('[openDatabase-polyfill] Found users:', users);
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// 创建结果对象
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var results = {
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rows: {
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length: users.length,
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item: function(index) {
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return users[index];
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}
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}
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};
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if (successCb) successCb(tx, results);
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return;
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}
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// DELETE
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if (sqlUpper.indexOf('DELETE FROM') === 0) {
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console.log('[openDatabase-polyfill] DELETE detected');
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localStorage.removeItem('BM_USER');
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console.log('[openDatabase-polyfill] Users deleted');
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if (successCb) successCb(tx, { rowsAffected: 1, rows: { length: 0 } });
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return;
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}
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// 未知的 SQL 语句
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console.warn('[openDatabase-polyfill] Unknown SQL statement:', sql);
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if (successCb) successCb(tx, { rowsAffected: 0, rows: { length: 0 } });
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} catch (e) {
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console.error('[openDatabase-polyfill] Error executing SQL:', e);
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if (errorCb) {
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errorCb(tx, { message: e.message || 'Unknown error' });
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}
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}
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}
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};
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try {
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callback(tx);
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if (successCallback) successCallback();
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} catch (e) {
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console.error('[openDatabase-polyfill] Error in transaction callback:', e);
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if (errorCallback) errorCallback(e);
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}
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}
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};
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};
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console.log('[openDatabase-polyfill] Polyfill installed successfully');
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})();
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@ -0,0 +1,59 @@
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package com.bonus.fmt;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.util.Log;
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import android.webkit.WebView;
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import android.webkit.WebViewClient;
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/**
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* 自定义 WebViewClient，用于在 WebView 加载页面时配置设置
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*/
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public class FMTWebViewClient extends WebViewClient {
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private static final String TAG = "FMTWebViewClient";
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private static final String LOG_PREFIX = "[FMT-DEBUG] ";
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private final Context context;
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private final WebViewClient originalClient;
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public FMTWebViewClient(Context context, WebViewClient originalClient) {
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this.context = context;
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this.originalClient = originalClient;
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}
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@Override
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public void onPageStarted(WebView view, String url, Bitmap favicon) {
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Log.i(TAG, LOG_PREFIX + "onPageStarted: " + url);
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// 在页面开始加载时配置 WebView
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try {
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WebViewConfigHelper.configureWebView(view, context);
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} catch (Exception e) {
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Log.e(TAG, LOG_PREFIX + "Error configuring WebView in onPageStarted", e);
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}
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if (originalClient != null) {
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originalClient.onPageStarted(view, url, favicon);
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} else {
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super.onPageStarted(view, url, favicon);
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}
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}
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@Override
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public void onPageFinished(WebView view, String url) {
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Log.i(TAG, LOG_PREFIX + "onPageFinished: " + url);
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// 在页面加载完成时再次确认配置
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try {
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WebViewConfigHelper.configureWebView(view, context);
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} catch (Exception e) {
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Log.e(TAG, LOG_PREFIX + "Error configuring WebView in onPageFinished", e);
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}
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if (originalClient != null) {
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originalClient.onPageFinished(view, url);
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} else {
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super.onPageFinished(view, url);
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}
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}
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}
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@ -0,0 +1,77 @@
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package com.bonus.fmt;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.webkit.WebView;
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/**
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* 自定义WebView工厂，用于在WebView创建时立即配置
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* 解决Android 16上localStorage和WebSQL失效的问题
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*/
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public class WebViewFactory {
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private static final String TAG = "WebViewFactory";
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private static boolean isInitialized = false;
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/**
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* 初始化WebView工厂
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* 这个方法应该在Application.onCreate()中调用
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*/
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public static void initialize(Context context) {
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if (isInitialized) {
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Log.d(TAG, "WebViewFactory already initialized");
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return;
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}
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try {
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Log.i(TAG, "Initializing WebViewFactory for Android " + android.os.Build.VERSION.SDK_INT);
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// 设置WebView的默认配置
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// 注意：这里不能直接创建WebView实例，因为可能会导致进程问题
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isInitialized = true;
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Log.i(TAG, "WebViewFactory initialized successfully");
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} catch (Exception e) {
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Log.e(TAG, "Error initializing WebViewFactory", e);
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}
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}
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/**
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* 创建并配置WebView
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*/
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public static WebView createConfiguredWebView(Context context) {
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Log.i(TAG, "Creating configured WebView");
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WebView webView = new WebView(context);
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WebViewConfigHelper.configureWebView(webView, context);
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return webView;
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}
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/**
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* 创建并配置WebView（带属性）
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*/
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public static WebView createConfiguredWebView(Context context, AttributeSet attrs) {
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Log.i(TAG, "Creating configured WebView with attributes");
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WebView webView = new WebView(context, attrs);
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WebViewConfigHelper.configureWebView(webView, context);
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return webView;
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}
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/**
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* 配置已存在的WebView
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*/
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public static void configureExistingWebView(WebView webView, Context context) {
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if (webView == null || context == null) {
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Log.w(TAG, "Cannot configure null WebView or context");
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return;
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}
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try {
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Log.i(TAG, "Configuring existing WebView: " + webView.getClass().getName());
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WebViewConfigHelper.configureWebView(webView, context);
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} catch (Exception e) {
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Log.e(TAG, "Error configuring existing WebView", e);
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}
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}
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}
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