检测android中的位置变化

Question

我的 Android 应用程序包含一个 webview。但我有一个问题，因为当我选中网站内的一些复选框并通过网站本身上的链接导航到另一个网站，然后返回到复选框网站时，复选框将再次取消选中。默认的 Android 网络浏览器中不会发生这种情况。我该如何解决这个问题？？？请提前提供帮助并致谢。我正在使用这段代码：

public class finnActivity extends Activity implements OnClickListener {
/** Called when the activity is first created. */
Button TilbakeButton;
WebView FinnWeb;
private String currentURL;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    FinnWeb = (WebView)findViewById(R.id.FinnWeb);
    FinnWeb.setWebViewClient(new MyWebViewClient());
    FinnWeb.getSettings().setBuiltInZoomControls(true); 
    FinnWeb.getSettings().setJavaScriptEnabled(true);
    FinnWeb.loadUrl("http://m.finn.no");
    FinnWeb.requestFocus(View.FOCUS_DOWN);
    }
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if ((keyCode == KeyEvent.KEYCODE_BACK)) {
        if (FinnWeb.canGoBack()) {
            FinnWeb.goBack();
        }
        else {
            System.exit(0);
        }
        return true;
}
    return super.onKeyDown(keyCode, event);
}
@Override
public boolean onCreateOptionsMenu(Menu meny) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menubuttons, meny);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId()) {
    case R.id.LoggInn:
        setContentView(R.layout.main);
        FinnWeb  = (WebView) findViewById(R.id.FinnWeb);
        FinnWeb.setWebViewClient(new MyWebViewClient());
        FinnWeb.getSettings().setJavaScriptEnabled(true);
        FinnWeb.loadUrl("http://m.finn.no/#loginForm.html");
        FinnWeb.requestFocus(View.FOCUS_DOWN);
        break;
    case R.id.OmUtvikler:
        setContentView(R.layout.omutvikler);
        TilbakeButton = (Button)findViewById(R.id.TilbakeButton);
        TilbakeButton.setOnClickListener(this);
        break;
    case R.id.RegistrerDeg:
        setContentView(R.layout.main);
        FinnWeb  = (WebView) findViewById(R.id.FinnWeb);
        FinnWeb.setWebViewClient(new MyWebViewClient());
        FinnWeb.getSettings().setJavaScriptEnabled(true);
        FinnWeb.loadUrl("http://m.finn.no/#auth/registrer.html");
        FinnWeb.requestFocus(View.FOCUS_DOWN);
        break;
    case R.id.Tilbake:
        if (FinnWeb.canGoBack()) {
            FinnWeb.goBack();
        }
        else{

        }
        break;
    case R.id.Frem:
        if (FinnWeb.canGoForward()) {
            FinnWeb.goForward();
        }
        else{

        }
        break;
    case R.id.ExitWithSaving:
        FinnWeb.saveState(null);
        System.exit(0);
        break;
    case R.id.Exit:
        System.exit(0);
        break;
    case R.id.LastAnnose:
        FinnWeb.restoreState(null);
        break;
        }
    return true;
}
public void onClick(View src) {
    switch(src.getId()) {
    case R.id.TilbakeButton:
        setContentView(R.layout.main);
        FinnWeb  = (WebView) findViewById(R.id.FinnWeb);
        FinnWeb.setWebViewClient(new MyWebViewClient());
        FinnWeb.getSettings().setJavaScriptEnabled(true);
        FinnWeb.getSettings().setBuiltInZoomControls(true); 
        FinnWeb.requestFocus(View.FOCUS_DOWN);
        break;
    }
}
public boolean shouldOverrideUrlLoading(WebView view, String url) 
{   view.loadUrl(url);
    //save off url in instance variable
    return true;
 }

    private class MyWebViewClient extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
}
    }
    }