Question

关于在Android上使openfilechooser工作的问题有几个问题，我已经应用了推荐的解决方案。

我的问题不在于它还没有开始工作4.4但是接下来我将解决这个问题，但我只需要它在我的测试设备4.2.2（注8）上工作，但是一旦选择了图像它就会返回一个空白的白色屏幕。

我已经重新检查了我的代码并审查了许多解决方案，他们都提供了相同的解决方案，但我似乎无法找到错误。

继承我的代码：

 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;  
  }
  }     

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_team_page);
    mHandler = new Handler();




getUser = ((MyData)getApplicationContext());


TimeZone tz = TimeZone.getDefault();
    Date now = new Date();
    int offsetFromUtc = tz.getOffset(now.getTime()) / 3600000;
    m2tTimeZoneIs = Integer.toString(offsetFromUtc);

userCredentials = getApplicationContext().getSharedPreferences("me2team", MODE_PRIVATE);

isShowingDesktop = false;

m2tUser = getUser.getCredentialsUser();
m2tPswd = getUser.getCredentialsPwd();
isPremiumUser = getUser.getPremiumUser();

tempWebURL = getResources().getString(R.string.teamURLMobile);
webURL = tempWebURL + "?username=" + m2tUser + "&password=" + m2tPswd + "&mobile=1&offSetHours=" + m2tTimeZoneIs;

    webView = (WebView) findViewById(R.id.teamWebView);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setSavePassword(false);
    webView.getSettings().setSupportZoom(true);
    webView.getSettings().setBuiltInZoomControls(false); //as per Janet's request
    webView.getSettings().setUseWideViewPort(true);
    webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
    webView.setScrollbarFadingEnabled(false);
    webView.getSettings().setLoadWithOverviewMode(true);
    webView.setInitialScale(70);

    WebSettings settings = webView.getSettings();
    settings.setDomStorageEnabled(true);

    webView.setAlpha(255);

    webView.setWebChromeClient(new WebChromeClient() {

      @SuppressWarnings("unused")
    public void openFileChooser(ValueCallback<Uri> uploadMsg) {  

          mUploadMessage = uploadMsg;  
          Intent i = new Intent(Intent.ACTION_GET_CONTENT);  
          i.addCategory(Intent.CATEGORY_OPENABLE);  
          i.setType("image/*");  
          TeamPage.this.startActivityForResult(Intent.createChooser(i,"File Chooser"), FILECHOOSER_RESULTCODE);  

         }

      // For Android 3.0+
      @SuppressWarnings("unused")

         public void openFileChooser( ValueCallback uploadMsg, String acceptType ) {
         mUploadMessage = uploadMsg;
         Intent i = new Intent(Intent.ACTION_GET_CONTENT);
         i.addCategory(Intent.CATEGORY_OPENABLE);
         i.setType("*/*");
         TeamPage.this.startActivityForResult(
         Intent.createChooser(i, "File Browser"),
         FILECHOOSER_RESULTCODE);
         }

      //For Android 4.1

         @SuppressWarnings("unused")
        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/*");  
             TeamPage.this.startActivityForResult( Intent.createChooser( i, "File Chooser" ), TeamPage.FILECHOOSER_RESULTCODE );

         }

      public void onProgressChanged(WebView view, int progress)
      {
          activity.setTitle("Loading...");
          activity.setProgress(progress * 100);             
          if(progress == 100)
          {
              activity.setTitle(R.string.app_name);

          }                  
      }             
  });

  webView.setWebViewClient(new WebViewClient());

我检查了服务器chap，当我选择文件时他没有看到任何错误，所以就像它停止做任何事情一样。事情是，如果我退出网站，然后重新登录，我仍然得到相同的白色屏幕？直到我重新启动它返回到网页的应用程序（记住登录详细信息并自动登录）。

和想法？

Webview客户端文件openfilechooser返回空白屏幕

0 个答案: