android Webview支持input type=file

http://david-wei.github.io/2015/07/07/Webview-%E6%94%AF%E6%8C%81-input-type-file/

在一个带有input tpye=file标签的Html页面，通过WebView，上传Android手机上的图片，发现不工作。（在iOS和微信上完全正常工作）所以，需要研究一下Android的WebView，来支持type=file的标签。

WebView设置WebChromeClient

重写WebChromeClient中关于文件选择的方法，onShowFileChooser和openFileChooser。(项目中只需要选择图片，所以加上了图片过滤。)

public static final int INPUT_FILE_REQUEST_CODE = 1;
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE = 2;
private ValueCallback<Uri[]> mFilePathCallback;

private String mCameraPhotoPath;
private WebChromeClient mWebChromeClient = new WebChromeClient() {

// android 5.0
public boolean onShowFileChooser(
WebView webView, ValueCallback<Uri[]> filePathCallback,
WebChromeClient.FileChooserParams fileChooserParams) {
if (mFilePathCallback != null) {
mFilePathCallback.onReceiveValue(null);
}
mFilePathCallback = 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.e("WebViewSetting", "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;
}

//The undocumented magic method override
//Eclipse will swear at you if you try to put @Override here
// For Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg) {

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

}

// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
WebViewActivity.this.startActivityForResult(
Intent.createChooser(i, "Image Chooser"),
FILECHOOSER_RESULTCODE);
}

//For Android 4.1
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/*");
WebViewActivity.this.startActivityForResult(Intent.createChooser(i, "Image Chooser"), WebViewActivity.FILECHOOSER_RESULTCODE);

}
};

选择结果的回调

在onActivityResult中获取对应的选取文件的返回结果

public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage) return;
Uri result = data == null || resultCode != RESULT_OK ? null
: data.getData();
if (result != null) {
String imagePath = ImageFilePath.getPath(this, result);
if (!StrUtils.isEmpty(imagePath)) {
result = Uri.parse("file:///" + imagePath);
}
}
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
} else if (requestCode == INPUT_FILE_REQUEST_CODE && mFilePathCallback != null) {
// 5.0的回调
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) {
Logger.d("camera_photo_path", mCameraPhotoPath);
results = new Uri[]{Uri.parse(mCameraPhotoPath)};
}
} else {
String dataString = data.getDataString();
Logger.d("camera_dataString", dataString);
if (dataString != null) {
results = new Uri[]{Uri.parse(dataString)};
}
}
}

mFilePathCallback.onReceiveValue(results);
mFilePathCallback = null;
} else {
super.onActivityResult(requestCode, resultCode, data);
return;
}
}

文件路径的获取

返回文件的解析，因为html页面需要的是文件，所以客户端需要返回的是对应文件的路径。这样，就会存在一个问题，在Android 4.4上，通过文件选择返回的结果都是对应以content开头格式的对应的路径。这就得需要咱们来进行判断，最终都需要转回成以file开头对应的格式文件。下面，我封装成了一个ImageFilePath的类，通过调用getPath方法来获取最终的结果。这个类的方法如下：

/**
* Method for return file path of Gallery image
*
* @param context
* @param uri
* @return path of the selected image file from gallery
*/
public static String getPath(final Context context, final Uri uri) {

// check here to KITKAT or new version
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {

/
4000
/ ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];

if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/"
+ split[1];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {

final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"),
Long.valueOf(id));

return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];

Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}

final String selection = "_id=?";
final String[] selectionArgs = new String[] { split[1] };

return getDataColumn(context, contentUri, selection,
selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {

// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();

return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}

return null;
}

/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context
*            The context.
* @param uri
*            The Uri to query.
* @param selection
*            (Optional) Filter used in the query.
* @param selectionArgs
*            (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri,
String selection, String[] selectionArgs) {

Cursor cursor = null;
final String column = "_data";
final String[] projection = { column };

try {
cursor = context.getContentResolver().query(uri, projection,
selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}

/**
* @param uri
*            The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri
.getAuthority());
}

/**
* @param uri
*            The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri
.getAuthority());
}

/**
* @param uri
*            The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri
.getAuthority());
}

/**
* @param uri
*            The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri
.getAuthority());
}

参考资料

file-upload-in-webview

get-real-path-from-uri-android-kitkat-new-storage-access-framework

应网友要求添加缺失方法并附上全部源码：

[java] view plain copy print?



package com.yunshouhu.android_webview_input_file;

import java.io.File;
import java.io.IOException;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class WebViewActivity extends Activity{

private static final String TAG = “MainAcivity”;
private WebView webView;

@SuppressLint(“SetJavaScriptEnabled”)
@Override
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);
webView=(WebView) findViewById(R.id.webView);
webView.loadUrl(”file:///android_asset/upload.html”);
WebSettings mWebSettings = webView.getSettings();
mWebSettings.setJavaScriptEnabled(true);
mWebSettings.setSupportZoom(false);
mWebSettings.setAllowFileAccess(true);
mWebSettings.setAllowFileAccess(true);
mWebSettings.setAllowContentAccess(true);

webView.setWebChromeClient(mWebChromeClient);
webView.setWebViewClient(new WebViewClient(){

@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {

//返回值是true的时候控制去WebView打开，为false调用系统浏览器或第三方浏览器
Log.i(TAG, ”shouldOverrideUrlLoading url=”+url);
view.loadUrl(url);
return true;
}
});

Log.i(TAG, ”start”);

}

public void go(View view)
{
Log.i(TAG, ”go”);
webView.loadUrl(”file:///android_asset/upload.html”);
webView.getSettings().setJavaScriptEnabled(true);

}

public static final int INPUT_FILE_REQUEST_CODE = 1;
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE = 2;
private ValueCallback<Uri[]> mFilePathCallback;

14b07

private String mCameraPhotoPath;

//在sdcard卡创建缩略图
//createImageFileInSdcard
@SuppressLint(“SdCardPath”)
private File createImageFile() {
//mCameraPhotoPath=”/mnt/sdcard/tmp.png”;
File file=new File(Environment.getExternalStorageDirectory()+“/”,“tmp.png”);
mCameraPhotoPath=file.getAbsolutePath();
if(!file.exists())
{
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
return file;
}

private WebChromeClient mWebChromeClient = new WebChromeClient() {

// android 5.0 这里需要使用android5.0 sdk
public boolean onShowFileChooser(
WebView webView, ValueCallback<Uri[]> filePathCallback,
WebChromeClient.FileChooserParams fileChooserParams) {

Log.d(TAG, ”onShowFileChooser”);
if (mFilePathCallback != null) {
mFilePathCallback.onReceiveValue(null);
}

mFilePathCallback = filePathCallback;

/**
Open Declaration String android.provider.MediaStore.ACTION_IMAGE_CAPTURE = “android.media.action.IMAGE_CAPTURE”
Standard Intent action that can be sent to have the camera application capture an image and return it.
The caller may pass an extra EXTRA_OUTPUT to control where this image will be written. If the EXTRA_OUTPUT is not present, then a small sized image is returned as a Bitmap object in the extra field. This is useful for applications that only need a small image. If the EXTRA_OUTPUT is present, then the full-sized image will be written to the Uri value of EXTRA_OUTPUT. As of android.os.Build.VERSION_CODES.LOLLIPOP, this uri can also be supplied through android.content.Intent.setClipData(ClipData). If using this approach, you still must supply the uri through the EXTRA_OUTPUT field for compatibility with old applications. If you don’t set a ClipData, it will be copied there for you when calling Context.startActivity(Intent).
See Also:EXTRA_OUTPUT
标准意图，被发送到相机应用程序捕获一个图像，并返回它。通过一个额外的extra_output控制这个图像将被写入。如果extra_output是不存在的，
那么一个小尺寸的图像作为位图对象返回。如果extra_output是存在的，那么全尺寸的图像将被写入extra_output URI值。
*/
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 {
//设置MediaStore.EXTRA_OUTPUT路径,相机拍照写入的全路径
photoFile = createImageFile();
takePictureIntent.putExtra(”PhotoPath”, mCameraPhotoPath);
} catch (Exception ex) {
// Error occurred while creating the File
Log.e(”WebViewSetting”, “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));
System.out.println(mCameraPhotoPath);
} 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};
System.out.println(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;
}

//The undocumented magic method override
//Eclipse will swear at you if you try to put @Override here
// For Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
Log.d(TAG, ”openFileChooser1”);

mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType(”image/*”);
WebViewActivity.this.startActivityForResult(Intent.createChooser(i, “Image Chooser”), FILECHOOSER_RESULTCODE);

}

// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
Log.d(TAG, ”openFileChooser2”);
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType(”image/*”);
WebViewActivity.this.startActivityForResult(
Intent.createChooser(i, ”Image Chooser”),
FILECHOOSER_RESULTCODE);
}

//For Android 4.1
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
Log.d(TAG, ”openFileChooser3”);

mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType(”image/*”);
WebViewActivity.this.startActivityForResult(Intent.createChooser(i, “Image Chooser”), WebViewActivity.FILECHOOSER_RESULTCODE);

}
};

public void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.d(TAG, ”onActivityResult”);

if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage) return;
Uri result = data == null || resultCode != RESULT_OK ? null
: data.getData();
if (result != null) {
String imagePath = ImageFilePath.getPath(this, result);
if (!TextUtils.isEmpty(imagePath)) {
result = Uri.parse(”file:///” + imagePath);
}
}
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
} else if (requestCode == INPUT_FILE_REQUEST_CODE && mFilePathCallback != null) {
// 5.0的回调
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) {
Logger.d(”camera_photo_path”, mCameraPhotoPath);
results = new Uri[]{Uri.parse(mCameraPhotoPath)};
}
} else {
String dataString = data.getDataString();
Logger.d(”camera_dataString”, dataString);
if (dataString != null) {
results = new Uri[]{Uri.parse(dataString)};
}
}
}

mFilePathCallback.onReceiveValue(results);
mFilePathCallback = null;
} else {
super.onActivityResult(requestCode, resultCode, data);
return;
}
}

}

package com.yunshouhu.android_webview_input_file;

import java.io.File;
import java.io.IOException;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class WebViewActivity extends Activity{

private static final String TAG = "MainAcivity";
private WebView webView;

@SuppressLint("SetJavaScriptEnabled")
@Override
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);
webView=(WebView) findViewById(R.id.webView);
webView.loadUrl("file:///android_asset/upload.html");
WebSettings mWebSettings = webView.getSettings();
mWebSettings.setJavaScriptEnabled(true);
mWebSettings.setSupportZoom(false);
mWebSettings.setAllowFileAccess(true);
mWebSettings.setAllowFileAccess(true);
mWebSettings.setAllowContentAccess(true);

webView.setWebChromeClient(mWebChromeClient);
webView.setWebViewClient(new WebViewClient(){

@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {

//返回值是true的时候控制去WebView打开，为false调用系统浏览器或第三方浏览器
Log.i(TAG, "shouldOverrideUrlLoading url="+url);
view.loadUrl(url);
return true;
}
});

Log.i(TAG, "start");

}

public void go(View view)
{
Log.i(TAG, "go");
webView.loadUrl("file:///android_asset/upload.html");
webView.getSettings().setJavaScriptEnabled(true);

}

public static final int INPUT_FILE_REQUEST_CODE = 1;
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE = 2;
private ValueCallback<Uri[]> mFilePathCallback;

private String mCameraPhotoPath;

//在sdcard卡创建缩略图
//createImageFileInSdcard
@SuppressLint("SdCardPath")
private File createImageFile() {
//mCameraPhotoPath="/mnt/sdcard/tmp.png";
File file=new File(Environment.getExternalStorageDirectory()+"/","tmp.png");
mCameraPhotoPath=file.getAbsolutePath();
if(!file.exists())
{
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
return file;
}

private WebChromeClient mWebChromeClient = new WebChromeClient() {

// android 5.0 这里需要使用android5.0 sdk
public boolean onShowFileChooser(
WebView webView, ValueCallback<Uri[]> filePathCallback,
WebChromeClient.FileChooserParams fileChooserParams) {

Log.d(TAG, "onShowFileChooser");
if (mFilePathCallback != null) {
mFilePathCallback.onReceiveValue(null);
}

mFilePathCallback = filePathCallback;

/**
Open Declaration   String android.provider.MediaStore.ACTION_IMAGE_CAPTURE = "android.media.action.IMAGE_CAPTURE"
Standard Intent action that can be sent to have the camera application capture an image and return it.
The caller may pass an extra EXTRA_OUTPUT to control where this image will be written. If the EXTRA_OUTPUT is not present, then a small sized image is returned as a Bitmap object in the extra field. This is useful for applications that only need a small image. If the EXTRA_OUTPUT is present, then the full-sized image will be written to the Uri value of EXTRA_OUTPUT. As of android.os.Build.VERSION_CODES.LOLLIPOP, this uri can also be supplied through android.content.Intent.setClipData(ClipData). If using this approach, you still must supply the uri through the EXTRA_OUTPUT field for compatibility with old applications. If you don't set a ClipData, it will be copied there for you when calling Context.startActivity(Intent).
See Also:EXTRA_OUTPUT
标准意图，被发送到相机应用程序捕获一个图像，并返回它。通过一个额外的extra_output控制这个图像将被写入。如果extra_output是不存在的，
那么一个小尺寸的图像作为位图对象返回。如果extra_output是存在的，那么全尺寸的图像将被写入extra_output URI值。
*/
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 {
//设置MediaStore.EXTRA_OUTPUT路径,相机拍照写入的全路径
photoFile = createImageFile();
takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
} catch (Exception ex) {
// Error occurred while creating the File
Log.e("WebViewSetting", "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));
System.out.println(mCameraPhotoPath);
} 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};
System.out.println(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;
}

//The undocumented magic method override
//Eclipse will swear at you if you try to put @Override here
// For Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
Log.d(TAG, "openFileChooser1");

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

}

// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
Log.d(TAG, "openFileChooser2");
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
WebViewActivity.this.startActivityForResult(
Intent.createChooser(i, "Image Chooser"),
FILECHOOSER_RESULTCODE);
}

//For Android 4.1
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
Log.d(TAG, "openFileChooser3");

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

}
};

public void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.d(TAG, "onActivityResult");

if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage) return;
Uri result = data == null || resultCode != RESULT_OK ? null
: data.getData();
if (result != null) {
String imagePath = ImageFilePath.getPath(this, result);
if (!TextUtils.isEmpty(imagePath)) {
result = Uri.parse("file:///" + imagePath);
}
}
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
} else if (requestCode == INPUT_FILE_REQUEST_CODE && mFilePathCallback != null) {
// 5.0的回调
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) {
Logger.d("camera_photo_path", mCameraPhotoPath);
results = new Uri[]{Uri.parse(mCameraPhotoPath)};
}
} else {
String dataString = data.getDataString();
Logger.d("camera_dataString", dataString);
if (dataString != null) {
results = new Uri[]{Uri.parse(dataString)};
}
}
}

mFilePathCallback.onReceiveValue(results);
mFilePathCallback = null;
} else {
super.onActivityResult(requestCode, resultCode, data);
return;
}
}

}

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