Android Webview从图库或相机上传图像 [英] Android Webview Upload Image from gallery or camera
本文介绍了Android Webview从图库或相机上传图像的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
嘿，谢谢您的宝贵时间.在我的应用的网络视图中加载的页面中，有一张照片上传:
Hey and thanks for your time. In my page that is loaded in the webview of my app is a photo upload:
<form action="?pb=1" method="post" enctype="multipart/form-data">
<input id="pbbutton" type="file" title="Profielbild ändern" name="datei" onchange="this.form.submit()">
<label id="pblabel" for="pbbutton"><img id="profilbild" title="Profilbild ändern" class="userpb" src="./users/<?php echo htmlspecialchars($userid); ?>/pb" alt="Bild nicht gefunden" onerror="this.src='./img/no_pb.png';"></label>
</form>
如果您通常在图库中等一处，它将上传一张照片...
It uploades a photo if you usually pic one of your gallery etc...
我该如何做，如果我单击此输入，我可以选择一张图片，然后在网络侧检测到更改(js:onchange)我已经尝试过一些东西，但是选择后它不会上传图片.这是我对imgupload的编码:
How can I make, that if I click on this input, that I can choose a picture and than the webside detects the change (js: onchange) I already tried something but it wont upload the picture after I selected it. Here my coding for the imgupload:
public class MainActivity extends Activity {
//For IMG Upload
private static final int INPUT_FILE_REQUEST_CODE = 1;
private static final int FILECHOOSER_RESULTCODE = 1;
private static final String TAG = MainActivity.class.getSimpleName();
private ValueCallback<Uri> mUploadMessage;
private Uri mCapturedImageURI = null;
private ValueCallback<Uri[]> mFilePathCallback;
private String mCameraPhotoPath;
@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;
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File imageFile = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
return imageFile;
}
/**
* WebChromeClient subclass handles UI-related calls
* Note: think chrome as in decoration, not the Chrome browser
*/
public class GeoWebChromeClient extends WebChromeClient {
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
// Always grant permission since the app itself requires location
// permission and the user has therefore already granted it
callback.invoke(origin, true, false);
}
}
WebView mWebView;
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
if(checkAndRequestPermissions()) {
// carry on the normal flow, as the case of permissions granted.
}
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.webView);
mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
mWebView.setWebViewClient(new GeoWebViewClient());
// Below required for geolocation
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.getSettings().setDatabaseEnabled(true);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setAllowFileAccess(true);
mWebView.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
mWebView.loadUrl("file:///android_asset/noinet.html");
}
});
mWebView.getSettings().setGeolocationEnabled(true);
mWebView.setWebChromeClient(new GeoWebChromeClient());
mWebView.getSettings().setBuiltInZoomControls(false);
mWebView.loadUrl("https://www.youtivity.org");
mWebView.setWebChromeClient(new WebChromeClient() {
//FOR IMG UPLOAD
// 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(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_ALLOW_MULTIPLE,true);
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;
}
});
}
@Override
public void onBackPressed() {
// Pop the browser back stack or exit the activity
if (mWebView.canGoBack()) {
mWebView.goBack();
} else {
super.onBackPressed();
}
}
}
希望您能为您度过愉快的一天
I hope you can help and have a great day
推荐答案
检查我的答案也许可以帮助您遇到同样的问题，但我可以这样解决:
Check My answer maybe helps you I had same problem but I solve like this :
输入类型文件无法正常工作android webview中的浏览选项?
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