android webview不支持input type=file 标签解决办法

项目中遇到 H5的input type="file" 标签在android的webview中失效，查了一下是安卓禁用掉了

重写webview 的WebChromeClient 可以解决

 webView.setWebChromeClient(new WebChromeClient(){                      // For 3.0+ Devices (Start)            // onActivityResult attached before constructor            protected void openFileChooser(ValueCallback uploadMsg, String acceptType)            {                mUploadMessage = uploadMsg;                Intent i = new Intent(Intent.ACTION_GET_CONTENT);                i.addCategory(Intent.CATEGORY_OPENABLE);                i.setType("image/*");                startActivityForResult(Intent.createChooser(i, "File Browser"), FILECHOOSER_RESULTCODE);            }            // For Lollipop 5.0+ Devices            @TargetApi(Build.VERSION_CODES.LOLLIPOP)            @Override            public boolean onShowFileChooser(WebView webView, ValueCallback filePathCallback, FileChooserParams fileChooserParams) {                if (uploadMessage != null) {                    uploadMessage.onReceiveValue(null);                    uploadMessage = null;                }                uploadMessage = filePathCallback;                Intent intent = fileChooserParams.createIntent();                try                {                    startActivityForResult(intent, REQUEST_SELECT_FILE);                } catch (ActivityNotFoundException e)                {                    uploadMessage = null;                    Toast.makeText(getBaseContext(), "Cannot Open File Chooser", Toast.LENGTH_LONG).show();                    return false;                }                return true;            }            //For Android 4.1 only            protected void openFileChooser(ValueCallback uploadMsg, String acceptType, String capture)            {                mUploadMessage = uploadMsg;                Intent intent = new Intent(Intent.ACTION_GET_CONTENT);                intent.addCategory(Intent.CATEGORY_OPENABLE);                intent.setType("image/*");                startActivityForResult(Intent.createChooser(intent, "File Browser"), FILECHOOSER_RESULTCODE);            }            protected void openFileChooser(ValueCallback 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);            }        });

@Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {            if (requestCode == REQUEST_SELECT_FILE)            {                if (uploadMessage == null)                    return;                uploadMessage.onReceiveValue(WebChromeClient.FileChooserParams.parseResult(resultCode, data));                uploadMessage = null;            }        }        else if (requestCode == FILECHOOSER_RESULTCODE) {            if (null == mUploadMessage)                return;            // Use MainActivity.RESULT_OK if you're implementing WebView inside Fragment            // Use RESULT_OK only if you're implementing WebView inside an Activity            Uri result = data == null || resultCode != NewQuanZi.RESULT_OK ? null : data.getData();            mUploadMessage.onReceiveValue(result);            mUploadMessage = null;        }        else            Toast.makeText(getBaseContext(), "选择图片失败", Toast.LENGTH_LONG).show();    }

可以解决3.1 4.1 5.0以上的版本的问题

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