Quelle est la méthode la plus simple pour obtenir du code html à partir d'une vue Web? J'ai essayé plusieurs méthodes de stackoverflow et google, mais je ne trouve pas de méthode exacte. Veuillez mentionner une manière exacte.
public class htmldecoder extends Activity implements OnClickListener,TextWatcher
{
TextView txturl;
Button btgo;
WebView wvbrowser;
TextView txtcode;
ImageButton btcode;
LinearLayout llayout;
int flagbtcode;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.htmldecoder);
txturl=(TextView)findViewById(R.id.txturl);
btgo=(Button)findViewById(R.id.btgo);
btgo.setOnClickListener(this);
wvbrowser=(WebView)findViewById(R.id.wvbrowser);
wvbrowser.setWebViewClient(new HelloWebViewClient());
wvbrowser.getSettings().setJavaScriptEnabled(true);
wvbrowser.getSettings().setPluginsEnabled(true);
wvbrowser.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
wvbrowser.addJavascriptInterface(new MyJavaScriptInterface(),"HTMLOUT");
//wvbrowser.loadUrl("http://www.google.com");
wvbrowser.loadUrl("javascript:window.HTMLOUT.showHTML('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");
txtcode=(TextView)findViewById(R.id.txtcode);
txtcode.addTextChangedListener(this);
btcode=(ImageButton)findViewById(R.id.btcode);
btcode.setOnClickListener(this);
}
public void onClick(View v)
{
if(btgo==v)
{
String url=txturl.getText().toString();
if(!txturl.getText().toString().contains("http://"))
{
url="http://"+url;
}
wvbrowser.loadUrl(url);
//wvbrowser.loadData("<html><head></head><body><div style='width:100px;height:100px;border:1px red solid;'></div></body></html>","text/html","utf-8");
}
else if(btcode==v)
{
ViewGroup.LayoutParams params1=wvbrowser.getLayoutParams();
ViewGroup.LayoutParams params2=txtcode.getLayoutParams();
if(flagbtcode==1)
{
params1.height=200;
params2.height=220;
flagbtcode=0;
//txtcode.setText(wvbrowser.getContentDescription());
}
else
{
params1.height=420;
params2.height=0;
flagbtcode=1;
}
wvbrowser.setLayoutParams(params1);
txtcode.setLayoutParams(params2);
}
}
public class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
/*@Override
public void onPageFinished(WebView view, String url)
{
// This call inject JavaScript into the page which just finished loading.
wvbrowser.loadUrl("javascript:window.HTMLOUT.processHTML('<head>'+document.getElementsByTagName('html')[0].innerHTML+'</head>');");
}*/
}
class MyJavaScriptInterface
{
@SuppressWarnings("unused")
public void showHTML(String html)
{
txtcode.setText(html);
}
}
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
wvbrowser.loadData("<html><div"+txtcode.getText().toString()+"></div></html>","text/html","utf-8");
}
}
webview.loadUrl("javascript:window.HtmlViewer.showHTML" + "('<head>'+document.getElementsByTagName('html')[0].innerHTML+'</head>');");
le programme agit comme la fonction finish (), et arrête cette activité. pourquoi? comment la résoudre?