问题是如果创建新标签，旧标签会忘记它们正在加载的内容以及何时选择它们开始加载主页（它在我的一个标签片段的oncreateView中）
请帮助我尽快完成
任何帮助将不胜感激
感谢你们很多人
这是我的片段
package com.android.shubham.muffinbrowserv10;
//suppose all imports are here
public class Myfragment extends Fragment implements EditText.OnEditorActionListener , ImageButton.OnClickListener
{
Date pagedate ;
static EditText url;
public static WebView web;
String input =" ";
String Url;
String previousInput = " ";
ProgressBar pro;
ImageButton reload_cancel , refresh , Forward;
static File filesDir;
static ArrayList<String> sb;
Activity myact;
public static Boolean incognitoBool = false , noTabBool = false;
static String homePage = "https://www.google.com";
@Override
public void onStart() {
super.onStart();
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getActivity());
Settings.setZoomButtons(settings.getBoolean(SettingActivity.any_zoom, true));
Settings.setZoomDrag(settings.getBoolean(SettingActivity.two_finger_zoom , true));
Settings.setJavachk(settings.getBoolean(SettingActivity.java_script, true));
noTabBool = settings.getBoolean(SettingActivity.no_tab , false);
Myfragment.homePage = settings.getString(SettingActivity.home_page , "https://google.com");
Myfragment.incognitoBool = settings.getBoolean(SettingActivity.incognito , false);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
myact = getActivity();
View v = inflater.inflate(R.layout.activity_bet , container , false);
reload_cancel = (ImageButton)v.findViewById(R.id.refresh);
refresh = (ImageButton)v.findViewById(R.id.refresh);
Forward = (ImageButton)v.findViewById(R.id.forward);
refresh.setOnClickListener(this);
Forward.setOnClickListener(this);
filesDir = myact.getFilesDir();
try
{
File f = new File(filesDir, "history.txt");
FileOutputStream fos = new FileOutputStream(f,true);
OutputStreamWriter opt = new OutputStreamWriter(fos);
StringBuilder sbhistory = readHistory();
pagedate = new Date();
int date = pagedate.getDate();
int month = pagedate.getMonth();
int year = pagedate.getYear();
String ddate = date+"::"+month+"::"+year;
if(!sbhistory.toString().contains(ddate))
opt.write("\n"+"!"+ ddate);
opt.close();
}catch (Throwable t){
Toast.makeText(getActivity().getBaseContext() , "Exception in Writing DATE -> " + t , Toast.LENGTH_SHORT).show();
t.printStackTrace();
}
url = (EditText)v.findViewById(R.id.url);
url.setOnEditorActionListener(this);
pro= (ProgressBar)v.findViewById(R.id.pro);
pro.getProgressDrawable().setColorFilter(Color.RED, PorterDuff.Mode.SRC_IN);
web = (WebView)v.findViewById(R.id.web);
web.getSettings().setJavaScriptEnabled(true);
web.getSettings().setSupportZoom(true);
web.getSettings().setDisplayZoomControls(true);
web.getSettings().setBuiltInZoomControls(true);
web.setWebViewClient(new WebViewClient()
{
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if (url.contains("youtube.com/watch?"))
{
loadpage(url , 3);
return false;
}
else
{
loadpage(url, 1);
return true;
}
}
}
);
String intent_url = getActivity().getIntent().getStringExtra("openPageKey");
if(intent_url == null )
loadpage(homePage , 1);
else
loadpage(intent_url, 1);
return v;
}
public void setURL(String web_url)
{
this.url.setText(web_url);
}
@Override
public void onResume()
{
this.url.setText(web.getUrl());
web.getSettings().setDisplayZoomControls(Settings.getZoomDrag());//opposite by mistake
web.getSettings().setSupportZoom(Settings.getZoomButtons());
web.getSettings().setJavaScriptEnabled(Settings.getJavachk());
super.onResume();
}
public void loadpage(String url , int val)
{
switch (val){
case 1://///////////////////////////////case 1 direct website loading
Url = url;
web.loadUrl(Url);
reload_cancel.setImageResource(R.drawable.cancel);
break;
case 2:////////////////////////////////case 2 inbuilt webKit functions
switch (url)
{
case "goBack":
web.goBack();
break;
case "goForward":
web.goForward();
break;
case "reload":
web.reload();
break;
}
break;
case 3://////////////////////////////case 3 using intent to load stuff
startActivity(new Intent(Intent.ACTION_VIEW , Uri.parse(url)));
}
new AsyncTask<Void , Void, Void>(){
@Override
protected Void doInBackground(Void... params)
{
while(pro.getProgress() < 100) publishProgress();
if (!incognitoBool)
writeHistory(Url);
return null;
}
@Override
protected void onPreExecute()
{
Myfragment.this.url.setTextColor(Color.RED);
pro.setProgress(0);
pro.setVisibility(View.VISIBLE);
}
@Override
protected void onPostExecute(Void aVoid)
{
pro.setVisibility(View.INVISIBLE);
Myfragment.this.url.setTextColor(Color.BLUE);
Myfragment.this.url.setText(web.getUrl());
reload_cancel.setImageResource(R.drawable.reload);
}
@Override
protected void onProgressUpdate(Void... params) {
pro.setProgress(web.getProgress());
}
}.execute();
}
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event)
{
input = url.getText().toString().trim().toLowerCase();
int order = 1;
if(!input.equals(previousInput))
{
boolean flag = false;
if (input.length() >= 4)
{
if (input.charAt(input.length() - 3) == '.' || input.charAt(input.length() - 4) == '.')
{
flag = true;
order = 1;
if (input.contains("www."))
input = "https://" + input;
else
input = "https://www." + input;
}
}
if (!flag)
{
if (input.contains("youtube.com/watch?"))
{
order = 3;
}
else
{
input = input.replace(" ", "+");
input = "https://www.google.co.in/search?q=" + input;
order = 1;
}
}
InputMethodManager mgr = (InputMethodManager) myact.getSystemService(myact.INPUT_METHOD_SERVICE);
mgr.hideSoftInputFromWindow(url.getWindowToken(), 0);
previousInput = input;
loadpage(input, order);
}
return false;
}
public void writeHistory(String loadedPage)
{
try{
File f = new File(filesDir, "history.txt");
FileOutputStream fos = new FileOutputStream(f,true);
OutputStreamWriter opt = new OutputStreamWriter(fos);
opt.write("\n"+ loadedPage);
opt.close();
}catch (Throwable t){
Toast.makeText(myact.getBaseContext() , "Exception in Writing History -> " + t , Toast.LENGTH_SHORT).show();
}
}
public static StringBuilder readHistory() throws IOException
{
File f = new File(filesDir,"history.txt");
FileInputStream fis = new FileInputStream(f);
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
StringBuilder sb = new StringBuilder("");
while (true) {
String line = br.readLine();
if (line == null) break;
sb.append("\n" + line);
}
return sb;
}
public static ArrayList<String> readHistory(Boolean b) throws IOException
{
if (b) {
try {
File f = new File(filesDir, "history.txt");
FileInputStream fis = new FileInputStream(f);
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
sb = new ArrayList<String>();
while (true) {
String line = br.readLine();
if (line == null) break;
sb.add(line);
}
return sb;
}catch(IOException e){}
}//end of if
return null;
}
@Override
public void onClick(View v)
{
switch (v.getId()){
case R.id.refresh:
loadpage("reload" , 2);
break;
case R.id.forward:
if (web.canGoForward())loadpage("goForward" , 2);
else Toast.makeText(myact.getBaseContext() , "Cant go more forward!" , Toast.LENGTH_SHORT).show();
break;
}
}
public static void clearcache(){
web.clearCache(true);
}
}
答案 0 :(得分：0)
您是否尝试过使用AsyncTask？
当打开新选项卡时，会立即为该片段调用onPause（）。并将来自Web代码的加载放在onStart（）而不是onCreateView（）上。它按原样工作，但onCreateView（）用于设置UI。加载的东西应该在onStart（）上。
尝试使用AsyncTask，这应该有效。