android中webview加载html页面调用文件上传功能

航空母舰-开发者号 2016-08-05 04:29:04

大家好，我用webview加载html页面时，想调用本地图片上传功能，以下是部分源代码：

mWebView = (WebView) findViewById(R.id.wv_card);
WebSettings webSettings = mWebView.getSettings();
webSettings.setAllowFileAccess(true); // 设置允许访问文件数据
webSettings.setJavaScriptEnabled(true);
webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
webSettings.setSupportZoom(false);
webSettings.setUseWideViewPort(true);
webSettings.setLoadWithOverviewMode(true);

mWebView.setWebChromeClient(new XHSWebChromeClient());

/**
* More info this method can be found at
* http://developer.android.com/training/camera/photobasics.html
*
* @return 创建的文件
* @throws IOException
*/
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.CHINESE).format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
String sdcard = Environment.getExternalStorageDirectory().toString();
File storageDir = new File(sdcard + "/WeiJuMei/Download");
return File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Uri uri = null;
try {
if (requestCode == FILE_CHOOSER_RESULT_CODE) {
if (null == mUploadMessage) return;
Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
if (result == null) {
mUploadMessage.onReceiveValue(null);
mUploadMessage = null;
return;
}
Log.i(TAG, "onActivityResult" + result.toString());
String path = FileUtils.getPath(this, result);
if (TextUtils.isEmpty(path)) {
mUploadMessage.onReceiveValue(null);
mUploadMessage = null;
return;
}
uri = Uri.fromFile(new File(path));
Log.i(TAG, "onActivityResult after parser uri:" + uri.toString());
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
// mUploadMessage.onReceiveValue(new Uri[]{uri});

if (/*requestCode != INPUT_FILE_REQUEST_CODE ||*/ mUploadMessage == null) {
super.onActivityResult(requestCode, resultCode, data);
return;
}

Uri[] results = null;

// Check that the response is a good one
if (resultCode == Activity.RESULT_OK) {
if (data == null) {
// If there is not data, then we may have taken a photo
if (mCameraPhotoPath != null) {
results = new Uri[]{Uri.parse(mCameraPhotoPath)};
}
} else {
String dataString = data.getDataString();
if (dataString != null) {
results = new Uri[]{Uri.parse(dataString)};
}
}
}
mUploadMessage.onReceiveValue(results);
// mUploadMessage = null;
// return;

} else {
mUploadMessage.onReceiveValue(uri);
}
mUploadMessage = null;
}
} catch (Exception e) {
try {
mUploadMessage.onReceiveValue(uri);
mUploadMessage = null;
} catch (Exception e1) {
mUploadMessage.onReceiveValue(null);
mUploadMessage = null;
return;
}
}
}

public class XHSWebChromeClient extends WebChromeClient {

@Override
public void onProgressChanged(WebView webView, int newProgress) {
progressBar.setProgress(newProgress);
if (newProgress == 100) {
progressBar.setVisibility(View.GONE);
}
super.onProgressChanged(webView, newProgress);
}

@Override
public boolean onJsAlert(WebView webView, String s, String s1, JsResult jsResult) {
return super.onJsAlert(webView, s, s1, jsResult);
}

// For Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
Log.i(TAG, "in openFile Uri Callback");
if (mUploadMessage != null) {
mUploadMessage.onReceiveValue(null);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
startActivityForResult(Intent.createChooser(i, "File Chooser"), FILE_CHOOSER_RESULT_CODE);
}

// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
Log.i(TAG, "in openFile Uri Callback has accept Type" + acceptType);
if (mUploadMessage != null) {
mUploadMessage.onReceiveValue(null);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
String type = TextUtils.isEmpty(acceptType) ? "*/*" : acceptType;
i.setType(type);
startActivityForResult(Intent.createChooser(i, "File Chooser"),
FILE_CHOOSER_RESULT_CODE);
}

// For Android 4.1
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
Log.i(TAG, "in openFile Uri Callback has accept Type" + acceptType + "has capture" + capture);
if (mUploadMessage != null) {
mUploadMessage.onReceiveValue(null);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
String type = TextUtils.isEmpty(acceptType) ? "*/*" : acceptType;
i.setType(type);
startActivityForResult(Intent.createChooser(i, "File Chooser"), FILE_CHOOSER_RESULT_CODE);
}

// Android 5.0+
@Override
@SuppressLint("NewApi")
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, android.webkit.WebChromeClient.FileChooserParams fileChooserParams) {
if (mUploadMessage != null) {
mUploadMessage.onReceiveValue(null);
}
mUploadMessage = filePathCallback;

Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
} catch (IOException ex) {
// Error occurred while creating the File
Log.i(TAG, "Unable to create Image File", ex);
}

// Continue only if the File was successfully created
if (photoFile != null) {
mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photoFile));
} else {
takePictureIntent = null;
}
}

Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType("image/*");

Intent[] intentArray;
if (takePictureIntent != null) {
intentArray = new Intent[]{takePictureIntent};
} else {
intentArray = new Intent[0];
}

Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);

startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);

return true;
}
}

这段代码中，当我选择的图片路径中包涵中文时，半天上传不成功，全英文或数字路径就可以上传成功，不知道是原因在哪，还请知道的大侠指教，感激不尽！

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