webview 对选择文件的按纽为何没反应，在线等

这里有段代码，可以点击，并有效果，只是选择了文件后，返回不了所选文件的目录
     wv.setWebChromeClient(new TestWebChromeClient(
new WebChromeClient()) {
public void openFileChooser(ValueCallback<Uri> uploadFile) {
// TODO Auto-generated method stub
mUploadMessage = uploadFile;
System.out.println("f"+uploadFile);
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
SearReActivity.this.startActivityForResult(Intent.createChooser(
i, "选择"), FILE_SELECTED);
}
     public void onProgressChanged(WebView view, int newProgress) {
     if(newProgress==100){
     handlert2.sendEmptyMessage(1);
     }
     super.onProgressChanged(view, newProgress);
     }
});大家帮我看下什么原因？
另附上引用的TestWebChromeClient类
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/package com.nc;import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Message;
import android.view.View;
import android.webkit.ConsoleMessage;
import android.webkit.GeolocationPermissions;
import android.webkit.JsPromptResult;
import android.webkit.JsResult;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebStorage;
import android.webkit.WebView;/**
*
* WebChromeClient for browser tests.
* Wraps around existing client so that specific methods can be overridden if needed.
*
*/
abstract class TestWebChromeClient extends WebChromeClient {    private WebChromeClient mWrappedClient;    protected TestWebChromeClient(WebChromeClient wrappedClient) {
        mWrappedClient = wrappedClient;
    }    /** {@inheritDoc} */
    @Override
    public void onProgressChanged(WebView view, int newProgress) {
        mWrappedClient.onProgressChanged(view, newProgress);
    }    /** {@inheritDoc} */
    @Override
    public void onReceivedTitle(WebView view, String title) {
        mWrappedClient.onReceivedTitle(view, title);
    }    /** {@inheritDoc} */
    @Override
    public void onReceivedIcon(WebView view, Bitmap icon) {
        mWrappedClient.onReceivedIcon(view, icon);
    }    /** {@inheritDoc} */
    @Override
    public void onReceivedTouchIconUrl(WebView view, String url,
            boolean precomposed) {
        mWrappedClient.onReceivedTouchIconUrl(view, url, precomposed);
    }    /** {@inheritDoc} */
    @Override
    public void onShowCustomView(View view, CustomViewCallback callback) {
        mWrappedClient.onShowCustomView(view, callback);
    }    /** {@inheritDoc} */
    @Override
    public void onHideCustomView() {
        mWrappedClient.onHideCustomView();
    }    /** {@inheritDoc} */
    @Override
    public boolean onCreateWindow(WebView view, boolean dialog,
            boolean userGesture, Message resultMsg) {
        return mWrappedClient.onCreateWindow(view, dialog, userGesture, resultMsg);
    }    /** {@inheritDoc} */
    @Override
    public void onRequestFocus(WebView view) {
        mWrappedClient.onRequestFocus(view);
    }    /** {@inheritDoc} */
    @Override
    public void onCloseWindow(WebView window) {
        mWrappedClient.onCloseWindow(window);
    }    /** {@inheritDoc} */
    @Override
    public boolean onJsAlert(WebView view, String url, String message,
            JsResult result) {
        return mWrappedClient.onJsAlert(view, url, message, result);
    }    /** {@inheritDoc} */
    @Override
    public boolean onJsConfirm(WebView view, String url, String message,
            JsResult result) {
        return mWrappedClient.onJsConfirm(view, url, message, result);
    }    /** {@inheritDoc} */
    @Override
    public boolean onJsPrompt(WebView view, String url, String message,
            String defaultValue, JsPromptResult result) {
        return mWrappedClient.onJsPrompt(view, url, message, defaultValue, result);
    }    /** {@inheritDoc} */
    @Override
    public boolean onJsBeforeUnload(WebView view, String url, String message,
            JsResult result) {
        return mWrappedClient.onJsBeforeUnload(view, url, message, result);
    }    /** {@inheritDoc} */
    @Override
    public void onExceededDatabaseQuota(String url, String databaseIdentifier,
            long currentQuota, long estimatedSize, long totalUsedQuota,
            WebStorage.QuotaUpdater quotaUpdater) {
        mWrappedClient.onExceededDatabaseQuota(url, databaseIdentifier, currentQuota,
                estimatedSize, totalUsedQuota, quotaUpdater);
    }    /** {@inheritDoc} */
    @Override
    public void onReachedMaxAppCacheSize(long spaceNeeded, long totalUsedQuota,
            WebStorage.QuotaUpdater quotaUpdater) {
        mWrappedClient.onReachedMaxAppCacheSize(spaceNeeded, totalUsedQuota, quotaUpdater);
    }    /** {@inheritDoc} */
    @Override
    public void onGeolocationPermissionsShowPrompt(String origin,
            GeolocationPermissions.Callback callback) {
        mWrappedClient.onGeolocationPermissionsShowPrompt(origin, callback);
    }    /** {@inheritDoc} */
    @Override
    public void onGeolocationPermissionsHidePrompt() {
        mWrappedClient.onGeolocationPermissionsHidePrompt();
    }    /** {@inheritDoc} */
    @Override
    public boolean onJsTimeout() {
        return mWrappedClient.onJsTimeout();
    }    /** {@inheritDoc} */
    @Override
    @Deprecated
    public void onConsoleMessage(String message, int lineNumber, String sourceID) {
        mWrappedClient.onConsoleMessage(message, lineNumber, sourceID);
    }    /** {@inheritDoc} */
    @Override
    public boolean onConsoleMessage(ConsoleMessage consoleMessage) {
        return mWrappedClient.onConsoleMessage(consoleMessage);
    }    /** {@inheritDoc} */
    @Override
    public Bitmap getDefaultVideoPoster() {
        return mWrappedClient.getDefaultVideoPoster();
    }    /** {@inheritDoc} */
    @Override
    public View getVideoLoadingProgressView() {
        return mWrappedClient.getVideoLoadingProgressView();
    }    /** {@inheritDoc} */
    @Override
    public void getVisitedHistory(ValueCallback<String[]> callback) {
        mWrappedClient.getVisitedHistory(callback);
    }    /** {@inheritDoc} */

    public void openFileChooser(ValueCallback<Uri> uploadFile) {
        ((TestWebChromeClient) mWrappedClient).openFileChooser(uploadFile);
    }
}

webSettings.setJavaScriptEnabled(true);

     wv=(WebView) findViewById(R.id.sear_re);
     //可用js
     wv.getSettings().setJavaScriptEnabled(true);
     //滚动条风格，为0就是不给滚动条留空间，滚动条覆盖在网页上
     wv.setScrollBarStyle(0);
     wv.setWebViewClient(new WebViewClient(){
     @Override
     public boolean shouldOverrideUrlLoading(WebView view, String url)
     {
         loadUrl(view, url);
         return true;

     }
     });

      wv.setWebChromeClient(new WebChromeClient(){
     @Override
     public void onProgressChanged(WebView view, int newProgress) {
     if(newProgress==100){
     handlert2.sendEmptyMessage(1);
     }
     super.onProgressChanged(view, newProgress);
     }
     });加了也没有用，问题还待大家帮忙解决。。

http://www.eoeandroid.com/thread-97910-1-1.html
参照5楼

package com.TextView.Activity;import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.webkit.JsPromptResult;
import android.webkit.JsResult;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;public class ManiActivity extends Activity {
private ValueCallback<Uri> mUploadMessage;
final static int FILE_SELECTED = 4;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

//       TextView tv = (TextView)findViewById(R.id.tv);
//       tv.setText(Html.fromHtml("欢迎大家观看<font color= blue>《Android开发从零开始》</font>系列教程"));

        final WebView webView =(WebView)findViewById(R.id.webview);
        webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.setFocusable(true);
        webView.requestFocus();
        try{
         webView.loadUrl("http://0791.8ff.cn/test/test.html");
        }
        catch(Exception e)
        {
         e.printStackTrace();
        }

        WebViewClient wvc = new WebViewClient(){ @Override
public void onLoadResource(WebView view, String url) {
Toast.makeText(getApplicationContext(), "onLoadResource", Toast.LENGTH_SHORT).show();
super.onLoadResource(view, url);
} @Override
public void onPageFinished(WebView view, String url) {
Toast.makeText(getApplicationContext(), "onPageFinished", Toast.LENGTH_SHORT).show();
super.onPageFinished(view, url);
} @Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
Toast.makeText(getApplicationContext(), "onPageStarted", Toast.LENGTH_SHORT);
super.onPageStarted(view, url, favicon);
} @Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
webView.loadUrl(url);
return true;
}

        };

        webView.setWebViewClient(wvc);

        MyWebChromeClient mwcc = new MyWebChromeClient(new WebChromeClient()){ @Override
public void openFileChooser(ValueCallback<Uri> uploadFile) {
if (mUploadMessage != null)
return;
mUploadMessage = uploadFile;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
ManiActivity.this.startActivityForResult(Intent.createChooser(
i, getString(R.string.choose_upload)), FILE_SELECTED);
}

        };
        webView.setWebChromeClient(mwcc);

       //on
    }

protected void onActivityResult(int requestCode, int resultCode,
Intent intent) { switch (requestCode) { // Choose a file from the file picker.
case FILE_SELECTED:
if (null == mUploadMessage)
break;
Uri result = intent == null || resultCode != RESULT_OK ? null
: intent.getData();
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
Log.e("onActivityResult", "onActivityResult");
break;
}
}
}
package com.TextView.Activity;import android.net.Uri;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;public class MyWebChromeClient extends WebChromeClient {
private WebChromeClient mWrappedClient;
protected MyWebChromeClient(WebChromeClient webChromeClient){
mWrappedClient = webChromeClient;
}

public void openFileChooser(ValueCallback<Uri>uploadFile)
{
((MyWebChromeClient)mWrappedClient).openFileChooser(uploadFile);
}

}

调试易

webview 对选择文件的按纽为何没反应，在线等

解决方案 »