我制作了一个简单的webview应用程序，它可以提取使用PHP和JavaScript的HTML页面：http://s-ka-paidbeats.com/app_tree/randomword/5.html
问题是JavaScript在我的移动设备上没有刷新，我不知道为什么
当我在桌面web浏览器上测试页面时，它有时工作得很好，但页面永远不会刷新，单词也保持不变。在我的安卓手机上，这个词根本不更新或刷新，我不明白为什么会发生这种情况。
以下是用户实际查看的页面（5.html文件）：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<script type="text/JavaScript">
function timedRefresh(timeoutPeriod) {
setTimeout("location.reload(true);",timeoutPeriod);
}
window.onload = timedRefresh(7000);
</script>
<title>Freestyle Word Generator - 5 Seconds</title>
<style type="text/css">
body, td, p, input {
color : #000000;
font-family: Impact, Haettenschweiler, 'Franklin Gothic Bold', Charcoal, 'Helvetica Inserat', 'Bitstream Vera Sans Bold', 'Arial Black', 'sans serif';
font-size : 12px;
}
.button {
background-color: #f44336;
border: none;
color: white;
padding: 15px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
} /* Red */
</style>
<link rel="stylesheet" href="app1.css">
</head>
<body style="background-color:#000000;text-align:center;color:#fff">
<div class="w3-container w3-orange">
<h1 style="text-align: center;margin:0px;margin-top:15px;font-family: Impact, Haettenschweiler, 'Franklin Gothic Bold', Charcoal, 'Helvetica Inserat', 'Bitstream Vera Sans Bold', 'Arial Black', 'sans serif';">Freestyle Word Generator</h1>
<p style="text-align:center;margin:0px;margin-bottom:15px;font-family: Impact, Haettenschweiler, 'Franklin Gothic Bold', Charcoal, 'Helvetica Inserat', 'Bitstream Vera Sans Bold', 'Arial Black', 'sans serif';font-size : 16px;">Sharpen Your Skills!</p>
</div>
<p style="color:#ff9800;font-size:30px;margin-bottom:0px;">YOUR WORD IS:</p>
<p style="color:#fff;font-size : 30px;margin-top:5px;"><script type="text/javascript" src="randomword.php?type=1"></script></p>
<script>
function startTimer(duration, display) {
var timer = duration, minutes, seconds;
setInterval(function () {
minutes = parseInt(timer / 60, 10)
seconds = parseInt(timer % 60, 10);
minutes = minutes < 10 ? "0" + minutes : minutes;
seconds = seconds < 10 ? "0" + seconds : seconds;
display.textContent = minutes + ":" + seconds;
if (--timer < 0) {
timer = duration;
}
}, 1000);
}
window.onload = function () {
var fiveMinutes = 5 * 1,
display = document.querySelector('#time');
startTimer(fiveMinutes, display);
};
</script>
<div style="color:#555;">New Word In <span id="time">00:05</span> Seconds!</div>
<br><br>
<input type="button" style="background-color: #ff9800;border: none;color: black;padding: 15px 32px;text-align: center;text-decoration: none;display: inline-block;font-size: 20px;" onclick="location.href='http://s-ka-paidbeats.com/app_tree/randomword/index.php';" value="STOP" />
</body>
</html>
这是我的安卓类数据：
package com.randomword.app.randomword;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;
import android.support.v7.widget.Toolbar;
import android.widget.Toast;
import com.randomword.app.randomword.NetorkConnection;
@SuppressLint("SetJavaScriptEnabled")
public class Beats extends AppCompatActivity {
private WebView webView;
NetorkConnection ntwrk_con = new NetorkConnection(this);
ProgressDialog dialog;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView toolsresources5 = (TextView)findViewById(R.id.feedbacktextview);
toolsresources5.setVisibility(View.INVISIBLE);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
webView = (WebView) findViewById(R.id.activity_main_webview);
dialog = new ProgressDialog(Beats.this);
if (ntwrk_con.isConnectingToInternet()) {
webView();
} else {
dialog_box_for_internet();
}
}
public void dialog_box_for_internet() {
if (ntwrk_con.isConnectingToInternet()) {
webView();
} else {
// dismis_dialog_box_for_internet = true;
AlertDialog.Builder builder = new AlertDialog.Builder(
Beats.this);
LayoutInflater inflater = getLayoutInflater();
View view = inflater.inflate(R.layout.dialog_custom_titile, null);
TextView title = (TextView) view.findViewById(R.id.myTitle);
title.setText("Unable To Connect");
builder.setCustomTitle(view);
builder.setMessage("No Internet Connection")
.setCancelable(false)
.setPositiveButton("Retry",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
if (ntwrk_con.isConnectingToInternet()) {
webView();
} else {
new Thread_for_internet().execute();
}
// dialog.cancel();
}
})
.setNegativeButton("Okay",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
finish();
// Gridview.super.onBackPressed();
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
class Thread_for_internet extends AsyncTask<String, Void, Boolean> {
@Override
protected void onPreExecute() {
super.onPreExecute();
dialog.setMessage("Loading..Please wait.");
dialog.setCanceledOnTouchOutside(false);
dialog.show();
}
@Override
protected Boolean doInBackground(String... args) {
try {
Thread.sleep(2000);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(Boolean result) {
dialog.dismiss();
dialog_box_for_internet();
}
}
public void webView() {
webView.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
if (dialog.isShowing()) {
dialog.dismiss();
}
}
});
dialog.setMessage("Picking Yes Or No...'nOne Moment...");
dialog.setCanceledOnTouchOutside(false);
dialog.show();
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
webView.getSettings().setLoadsImagesAutomatically(true);
webView.setWebChromeClient(new WebChromeClient());
webView.loadUrl("http://s-ka-paidbeats.com/app_tree/randomword/5.php?nocache=1");
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webSettings.setLoadsImagesAutomatically(true);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (webView.canGoBack()) {
webView.goBack();
} else {
finish();
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
boolean bRet=false;//set true is menu selection handled
switch (item.getItemId()) {
case R.id.action_settings_3:
Toast.makeText(this, Html.fromHtml("<big><b>Develeped By S-Ka-Paid</b></big><br>© 2016 S-Ka-Paid"), Toast.LENGTH_LONG).show();
bRet=true;
break;
case R.id.action_settings_4:
Intent intent2 = new Intent(Intent.ACTION_VIEW);
//Try Google play
intent2.setData(Uri.parse("market://details?id=com.yesorno.app.yesorno"));
startActivity(intent2);
bRet=true;
break;
default:
bRet=super.onOptionsItemSelected(item);
}
return bRet;
}
}
如果您访问该页面：http://s-ka-paidbeats.com/app_tree/randomword/5.php在桌面上，有时它可以工作，有时浏览器不会更改第一个单词后的随机单词。。。。。我认为这与浏览器缓存有关，或者我不确定。
我遇到过同样的问题，WebView忽略了location.reload();。
这个想法是从Android活动调用webview.reload()，并使用@JavascriptInterface从Javascript触发这个调用。
这导致了其他问题，但我已经找到了AsyncTask的解决方法，如下所述：无法从Javascript 重新加载Android WebView