Andriod webview实现文件上传

在国外网站上看到的挺不错的 关于WebView的   http://stackoverflow.com/questions/5907369/file-upload-in-webview

public class MyWb extends Activity {/** Called when the activity is first created. */WebView web;ProgressBar progressBar;private ValueCallback<Uri> mUploadMessage;   private final static int FILECHOOSER_RESULTCODE=1;   @Override   protected void onActivityResult(int requestCode, int resultCode,                                      Intent intent) {    if(requestCode==FILECHOOSER_RESULTCODE)    {     if (null == mUploadMessage) return;              Uri result = intent == null || resultCode != RESULT_OK ? null                      : intent.getData();              mUploadMessage.onReceiveValue(result);              mUploadMessage = null;    }  }  @Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    web = (WebView) findViewById(R.id.webview01);    progressBar = (ProgressBar) findViewById(R.id.progressBar1);    web = new WebView(this);      web.getSettings().setJavaScriptEnabled(true);    web.loadUrl("http://www.script-tutorials.com/demos/199/index.html");    web.setWebViewClient(new myWebClient());    web.setWebChromeClient(new WebChromeClient()      {             //The undocumented magic method override             //Eclipse will swear at you if you try to put @Override here          // For Android 3.0+        public void openFileChooser(ValueCallback<Uri> uploadMsg) {              mUploadMessage = uploadMsg;              Intent i = new Intent(Intent.ACTION_GET_CONTENT);              i.addCategory(Intent.CATEGORY_OPENABLE);              i.setType("image/*");              MyWb.this.startActivityForResult(Intent.createChooser(i,"File Chooser"), FILECHOOSER_RESULTCODE);             }        // For Android 3.0+           public void openFileChooser( ValueCallback uploadMsg, String acceptType ) {           mUploadMessage = uploadMsg;           Intent i = new Intent(Intent.ACTION_GET_CONTENT);           i.addCategory(Intent.CATEGORY_OPENABLE);           i.setType("*/*");           MyWb.this.startActivityForResult(           Intent.createChooser(i, "File Browser"),           FILECHOOSER_RESULTCODE);           }        //For Android 4.1           public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture){               mUploadMessage = uploadMsg;                 Intent i = new Intent(Intent.ACTION_GET_CONTENT);                 i.addCategory(Intent.CATEGORY_OPENABLE);                 i.setType("image/*");                 MyWb.this.startActivityForResult( Intent.createChooser( i, "File Chooser" ), MyWb.FILECHOOSER_RESULTCODE );           }    });      setContentView(web);  }public class myWebClient extends WebViewClient{    @Override    public void onPageStarted(WebView view, String url, Bitmap favicon) {        // TODO Auto-generated method stub        super.onPageStarted(view, url, favicon);    }    @Override    public boolean shouldOverrideUrlLoading(WebView view, String url) {        // TODO Auto-generated method stub        view.loadUrl(url);        return true;    }    @Override    public void onPageFinished(WebView view, String url) {        // TODO Auto-generated method stub        super.onPageFinished(view, url);        progressBar.setVisibility(View.GONE);    }}//flipscreen not loading again@Overridepublic void onConfigurationChanged(Configuration newConfig){            super.onConfigurationChanged(newConfig);}// To handle "Back" key press event for WebView to go back to previous screen./*@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {    if ((keyCode == KeyEvent.KEYCODE_BACK) && web.canGoBack()) {        web.goBack();        return true;    }    return super.onKeyDown(keyCode, event);}*/