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webview 本地上传文件

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09/05
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参考http://blog.csdn.net/zhtsuc/article/details/49154099
直接上代码
 
public class MainActivity1 extends Activity {
 
private WebView webView;
private WebSettings wvsetting;
private ImageView news_iv;
 
   public ValueCallback<Uri> mUploadMessage;
    public ValueCallback<Uri[]> mUploadMessageForAndroid5;
 
    public final static int FILECHOOSER_RESULTCODE = 1;
    public final static int FILECHOOSER_RESULTCODE_FOR_ANDROID_5 = 2;
 
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WebView webView = (WebView) this
.findViewById(R.id.news_content_webview);
 
webView = (WebView) this.findViewById(R.id.news_content_webview);
news_iv = (ImageView) this.findViewById(R.id.news_iv);
wvsetting = webView.getSettings();
// 设置是否允许通过file
// url加载的Javascript可以访问其他的源，包括其他的文件和http,https等其他的源。这个设置在JELLY_BEAN以前的版本默认是允许，在JELLY_BEAN及以后的版本中默认是禁止的
try {
if (Build.VERSION.SDK_INT >= 16) {
Class<?> clazz = webView.getSettings().getClass();
Method method = clazz.getMethod(
"setAllowUniversalAccessFromFileURLs", boolean.class);
if (method != null) {
method.invoke(webView.getSettings(), true);
}
}
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
// 内嵌图片时加载缓慢的问题
if (Build.VERSION.SDK_INT >= 19) {
wvsetting.setLoadsImagesAutomatically(true);
} else {
wvsetting.setLoadsImagesAutomatically(false);
}
// 屏幕适配滚动问题
wvsetting
.setUserAgentString("Mozilla/5.0 (Linux; U; Android 4.4.2; zh-cn;CmsTop Cloud Mobile) AppleWebKit/537.36 (KHTML, like Gecko)Version/4.0  Safari/537.36");
wvsetting.setJavaScriptEnabled(true);// 支持js
wvsetting.setSupportZoom(false);
wvsetting.setAllowFileAccess(true);
wvsetting.setDomStorageEnabled(true);
wvsetting.setSupportMultipleWindows(true);
wvsetting.setPluginState(WebSettings.PluginState.ON);
wvsetting.setLoadWithOverviewMode(true);
wvsetting.setUseWideViewPort(true);
wvsetting.setDefaultTextEncodingName("utf-8");
wvsetting.setCacheMode(WebSettings.LOAD_NO_CACHE);
wvsetting.setAllowFileAccess(true);
webView.setWebChromeClient(new MyWebChromeClient());
webView.setWebViewClient(new WebViewClient() {  
  
    @Override  
    public boolean shouldOverrideUrlLoading(WebView view, String url) {  
        view.loadUrl(url);  
        return true;  
    }  
}); 
webView.loadUrl("https://jinshuju.net/f/oRYFvm");
}
 
 
public class MyWebChromeClient extends WebChromeClient {
 
 //扩展浏览器上传文件
        //3.0++版本
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
            openFileChooserImpl(uploadMsg);
        }
 
        //3.0--版本
        public void openFileChooser(ValueCallback<Uri> uploadMsg) {
            openFileChooserImpl(uploadMsg);
        }
 
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
            openFileChooserImpl(uploadMsg);
        }
 
        // For Android > 5.0
        public boolean onShowFileChooser (WebView webView, ValueCallback<Uri[]> uploadMsg, WebChromeClient.FileChooserParams fileChooserParams) {
            openFileChooserImplForAndroid5(uploadMsg);
            return true;
        }
 
}
 
 
private void openFileChooserImpl(ValueCallback<Uri> uploadMsg) {
        mUploadMessage = uploadMsg;
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("image/*");
        startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);
    }
 
    private void openFileChooserImplForAndroid5(ValueCallback<Uri[]> uploadMsg) {
        mUploadMessageForAndroid5 = uploadMsg;
        Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
        contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
        contentSelectionIntent.setType("image/*");
 
        Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
        chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
        chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
 
        startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE_FOR_ANDROID_5);
    }
    
    
    @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;
 
        } else if (requestCode == FILECHOOSER_RESULTCODE_FOR_ANDROID_5){
            if (null == mUploadMessageForAndroid5)
                return;
            Uri result = (intent == null || resultCode != RESULT_OK) ? null: intent.getData();
            if (result != null) {
                mUploadMessageForAndroid5.onReceiveValue(new Uri[]{result});
            } else {
                mUploadMessageForAndroid5.onReceiveValue(new Uri[]{});
            }
            mUploadMessageForAndroid5 = null;
        }
    }
    
 
}