Android 从WebView中的照相机或图库上载图像
此应用程序中的WebView会打开带有上载按钮的页面 下面是允许打开对话框从gallery或camera上传图像的代码块 在我的活动中,我有:Android 从WebView中的照相机或图库上载图像,android,android-intent,android-webview,android-camera,android-image,Android,Android Intent,Android Webview,Android Camera,Android Image,此应用程序中的WebView会打开带有上载按钮的页面 下面是允许打开对话框从gallery或camera上传图像的代码块 在我的活动中,我有: private WebView wv; //make HTML upload button work in Webview private ValueCallback<Uri> mUploadMessage; private final static int FILECHOOSER_RESULTCODE=1; @O
private WebView wv;
//make HTML upload button work in Webview
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE=1;
@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;
}
}
wv.setWebChromeClient(new WebChromeClient() {
private Uri imageUri;
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType ) {
File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
// Create the storage directory if it does not exist
if (! imageStorageDir.exists()){
imageStorageDir.mkdirs();
}
File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
imageUri = Uri.fromFile(file);
final List<Intent> cameraIntents = new ArrayList<Intent>();
final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
final PackageManager packageManager = getPackageManager();
final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
for(ResolveInfo res : listCam) {
final String packageName = res.activityInfo.packageName;
final Intent i = new Intent(captureIntent);
i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
i.setPackage(packageName);
i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
cameraIntents.add(i);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
MainActivity.this.startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
private-WebView-wv;
//使HTML上载按钮在Webview中工作
private ValueCallback mUploadMessage;
private final static int FILECHOOSER_RESULTCODE=1;
@凌驾
ActivityResult上受保护的void(int-requestCode、int-resultCode、Intent-Intent){
if(requestCode==FILECHOOSER\u RESULTCODE)
{
if(null==mUploadMessage)返回;
Uri result=intent==null | | resultCode!=结果_确定?null
:intent.getData();
mUploadMessage.onReceiveValue(结果);
mUploadMessage=null;
}
}
在onCreate中,我有以下内容:
private WebView wv;
//make HTML upload button work in Webview
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE=1;
@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;
}
}
wv.setWebChromeClient(new WebChromeClient() {
private Uri imageUri;
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType ) {
File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
// Create the storage directory if it does not exist
if (! imageStorageDir.exists()){
imageStorageDir.mkdirs();
}
File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
imageUri = Uri.fromFile(file);
final List<Intent> cameraIntents = new ArrayList<Intent>();
final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
final PackageManager packageManager = getPackageManager();
final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
for(ResolveInfo res : listCam) {
final String packageName = res.activityInfo.packageName;
final Intent i = new Intent(captureIntent);
i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
i.setPackage(packageName);
i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
cameraIntents.add(i);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
MainActivity.this.startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
wv.setWebChromeClient(新WebChromeClient()){
私有Uri-imageUri;
public void openFileChooser(ValueCallback uploadMsg,String acceptType){
File imageStorageDir=新文件(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),“MyApp”);
//如果存储目录不存在,请创建该目录
如果(!imageStorageDir.exists()){
imageStorageDir.mkdirs();
}
File File=new File(imageStorageDir+File.separator+“IMG_”+String.valueOf(System.currentTimeMillis())+“.jpg”);
imageUri=Uri.fromFile(文件);
最终列表cameraIntents=newarraylist();
最终意图捕获意图=新意图(android.provider.MediaStore.ACTION\u IMAGE\u CAPTURE);
最终PackageManager PackageManager=getPackageManager();
最终列表listCam=packageManager.QueryInputActivities(captureIntent,0);
用于(ResolveInfo res:listCam){
最后一个字符串packageName=res.activityInfo.packageName;
最终意图i=新意图(captureIntent);
i、 setComponent(新组件名(res.activityInfo.packageName,res.activityInfo.name));
i、 setPackage(packageName);
i、 putExtra(MediaStore.EXTRA_输出,imageUri);
加上(i);
}
mUploadMessage=上传消息;
意向i=新意向(意向.行动\u获取\u内容);
i、 addCategory(意图。类别可打开);
i、 setType(“image/*”);
Intent chooserint=Intent.createChooser(i,“图像选择器”);
选择content.putExtra(Intent.EXTRA_INITIAL_INTENTS,cameraIntents.toArray(新包裹[]{}));
MainActivity.this.startActivityForResult(选择内容、文件选择器\u结果代码);
}
点击上传按钮,我可以看到相机、图像库和文件浏览器的选项。
文件资源管理器和图库按预期工作。问题是,当我使用相机拍照时,它没有上传到“选择文件”选项中,该选项显示状态为“未选择文件”
选择相机时:
private WebView wv;
//make HTML upload button work in Webview
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE=1;
@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;
}
}
wv.setWebChromeClient(new WebChromeClient() {
private Uri imageUri;
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType ) {
File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
// Create the storage directory if it does not exist
if (! imageStorageDir.exists()){
imageStorageDir.mkdirs();
}
File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
imageUri = Uri.fromFile(file);
final List<Intent> cameraIntents = new ArrayList<Intent>();
final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
final PackageManager packageManager = getPackageManager();
final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
for(ResolveInfo res : listCam) {
final String packageName = res.activityInfo.packageName;
final Intent i = new Intent(captureIntent);
i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
i.setPackage(packageName);
i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
cameraIntents.add(i);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
MainActivity.this.startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
使用相机拍摄快照时:返回并显示检查选项
选择复选标记时:
private WebView wv;
//make HTML upload button work in Webview
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE=1;
@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;
}
}
wv.setWebChromeClient(new WebChromeClient() {
private Uri imageUri;
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType ) {
File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
// Create the storage directory if it does not exist
if (! imageStorageDir.exists()){
imageStorageDir.mkdirs();
}
File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
imageUri = Uri.fromFile(file);
final List<Intent> cameraIntents = new ArrayList<Intent>();
final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
final PackageManager packageManager = getPackageManager();
final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
for(ResolveInfo res : listCam) {
final String packageName = res.activityInfo.packageName;
final Intent i = new Intent(captureIntent);
i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
i.setPackage(packageName);
i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
cameraIntents.add(i);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
MainActivity.this.startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
文件未上载:(在“选择文件”选项中)
期望值:
private WebView wv;
//make HTML upload button work in Webview
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE=1;
@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;
}
}
wv.setWebChromeClient(new WebChromeClient() {
private Uri imageUri;
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType ) {
File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
// Create the storage directory if it does not exist
if (! imageStorageDir.exists()){
imageStorageDir.mkdirs();
}
File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
imageUri = Uri.fromFile(file);
final List<Intent> cameraIntents = new ArrayList<Intent>();
final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
final PackageManager packageManager = getPackageManager();
final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
for(ResolveInfo res : listCam) {
final String packageName = res.activityInfo.packageName;
final Intent i = new Intent(captureIntent);
i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
i.setPackage(packageName);
i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
cameraIntents.add(i);
}
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
MainActivity.this.startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
我检查了我是否有适当的书写权限,因此生成了一个名为“MyApp”的目录,并将图片存储在其中(如果在单击网页上的上载按钮后调用相机拍摄)
如何通过编程告诉应用程序在点击复选标记后选择从照相机(存储在MyApp目录中)拍摄的照片?我假设实际调用了
onActivityResult
方法,但第三个参数Intent Intent
为空。这似乎是Nexus Phone的一个bug
但您可以将输出图像uri保存到私有变量中,并使用它来代替意图:
private Uri imageUri;
private void showAttachmentDialog(ValueCallback<Uri> uploadMsg) {
this.mUploadMessage = uploadMsg;
File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "TestApp");
if (!imageStorageDir.exists()) {
imageStorageDir.mkdirs();
}
File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
this.imageUri = Uri.fromFile(file); // save to the private variable
final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
Intent chooserIntent = Intent.createChooser(i, "Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Parcelable[] { captureIntent });
this.startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == this.mUploadMessage) {
return;
}
Uri result;
if (resultCode != RESULT_OK) {
result = null;
} else {
result = intent == null ? this.imageUri : intent.getData(); // retrieve from the private variable if the intent is null
}
this.mUploadMessage.onReceiveValue(result);
this.mUploadMessage = null;
}
}
private-Uri-imageUri;
私有void showAttachmentDialog(ValueCallback uploadMsg){
this.mUploadMessage=uploadMsg;
File imageStorageDir=新文件(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),“TestApp”);
如果(!imageStorageDir.exists()){
imageStorageDir.mkdirs();
}
File File=new File(imageStorageDir+File.separator+“IMG_”+String.valueOf(System.currentTimeMillis())+“.jpg”);
this.imageUri=Uri.fromFile(file);//保存到私有变量
最终意图捕获意图=新意图(android.provider.MediaStore.ACTION\u IMAGE\u CAPTURE);
putExtra(MediaStore.EXTRA_输出,imageUri);
意向i=新意向(意向.行动\u获取\u内容);
i、 addCategory(意图。类别可打开);
i、 setType(“image/*”);
Intent chooserint=Intent.createChooser(i,“图像选择器”);
选择content.putExtra(Intent.EXTRA_INITIAL_INTENTS,新包裹[]{captureentent});
此.startActivityForResult(选择内容、文件选择器\u结果代码);
}
@凌驾
ActivityResult上受保护的void(int-requestCode、int-resultCode、Intent-Intent){
if(requestCode==FILECHOOSER\u RESULTCODE){
if(null==this.mUploadMessage){
返回;
}
Uri结果;
if(resultCode!=结果\u确定){
结果=空;
}否则{
result=intent==null?this.imageUri:intent.getData();//如果intent为null,则从私有变量检索
}
此.mUploadMessage.onReceiveValue(结果);
this.mUploadMessage=null;
}
}
在这段代码中,我将
imageUri
变量添加到活动中,并在这两种方法中使用它。确保清单文件中没有android:launchMode=“singleInstance”
更新6/18:这似乎不正确
public class ChromeClient extends WebChromeClient {
// For Android 5.0
public boolean onShowFileChooser(WebView view, ValueCallback<Uri[]> filePath, WebChromeClient.FileChooserParams fileChooserParams) {
// Double check that we don't have any existing callbacks
if (mFilePathCallback != null) {
mFilePathCallback.onReceiveValue(null);
}
mFilePathCallback = filePath;
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(Common.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;
}
// openFileChooser for Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
mUploadMessage = uploadMsg;
// Create AndroidExampleFolder at sdcard
// Create AndroidExampleFolder at sdcard
File imageStorageDir = new File(
Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES)
, "AndroidExampleFolder");
if (!imageStorageDir.exists()) {
// Create AndroidExampleFolder at sdcard
imageStorageDir.mkdirs();
}
// Create camera captured image file path and name
File file = new File(
imageStorageDir + File.separator + "IMG_"
+ String.valueOf(System.currentTimeMillis())
+ ".jpg");
mCapturedImageURI = Uri.fromFile(file);
// Camera capture image intent
final Intent captureIntent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
// Create file chooser intent
Intent chooserIntent = Intent.createChooser(i, "Image Chooser");
// Set camera intent to file chooser
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS
, new Parcelable[] { captureIntent });
// On select image call onActivityResult method of activity
startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
// openFileChooser for Android < 3.0
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
openFileChooser(uploadMsg, "");
}
//openFileChooser for other Android versions
public void openFileChooser(ValueCallback<Uri> uploadMsg,
String acceptType,
String capture) {
openFileChooser(uploadMsg, acceptType);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
if (requestCode != INPUT_FILE_REQUEST_CODE || mFilePathCallback == 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)};
}
}
}
mFilePathCallback.onReceiveValue(results);
mFilePathCallback = null;
} else if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
if (requestCode != FILECHOOSER_RESULTCODE || mUploadMessage == null) {
super.onActivityResult(requestCode, resultCode, data);
return;
}
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == this.mUploadMessage) {
return;
}
Uri result = null;
try {
if (resultCode != RESULT_OK) {
result = null;
} else {
// retrieve from the private variable if the intent is null
result = data == null ? mCapturedImageURI : data.getData();
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "activity :" + e,
Toast.LENGTH_LONG).show();
}
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
}
}
return;
}
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.CAMERA2" /> // for new versions api 21+
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />