Develop Reference

Android variable at "onActivityResult" sometime null value on KITKAT

private void openCamera(int imageArray){
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory()+"/SurveyDA/assets/images","absen_" +
System.currentTimeMillis() + ".jpg"));
Log.d("ddddd : ", String.valueOf(fileUri));
cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, fileUri);
startActivityForResult(cameraIntent, imageArray);
}
when I want open camera, I set the fileuri, and Log success return uri
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
try {
//getting bitmap object from uri
Log.d("ddddd : ", String.valueOf(fileUri));
bitmapImage[requestCode] = MediaStore.Images.Media.getBitmap(this.getContentResolver(), fileUri);
// Initialize a new ByteArrayStream
ByteArrayOutputStream stream = new ByteArrayOutputStream();
// Compress the bitmap with JPEG format and quality 50%
bitmapImage[requestCode].compress(Bitmap.CompressFormat.JPEG,60,stream);
byte[] byteArray = stream.toByteArray();
Bitmap bitmap = BitmapFactory.decodeByteArray(byteArray,0,byteArray.length);
bitmapImage[requestCode] = Bitmap.createScaledBitmap(bitmap, bitmap.getWidth(), bitmap.getHeight(), false);
//displaying selected image to imageview
imageViews[requestCode].setImageBitmap(bitmapImage[requestCode]);
//calling the method uploadBitmap to upload image
} catch (IOException e) {
e.printStackTrace();
}
}else if(resultCode == Activity.RESULT_CANCELED) {
// User Cancelled the actiongetUriForFile
}
}
but in onActivityResult variable fileuri sometimes get null, and sometimes success return uri. And when I try in other phone Android 8.0.0, there no error.
how to fix that?
java.lang.RuntimeException: Unable to resume activity {com.example.surveyonlineda/com.example.surveyonlineda.Activity.AbsenActivity}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=100, result=-1, data=null} to activity {com.example.surveyonlineda/com.example.surveyonlineda.Activity.AbsenActivity}: java.lang.NullPointerException

Refer this Document for your issue you will get best solution

as I see, the fileUri is not returned by onActivityResult. You create it before start your cameraIntent. So in case your activity has been destroyed, the fileUri will null. To prevent it, I think you should use onSaveInstanceState to save the fileUri.
Here is an example to save the string fileUri
#Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Check whether we're recreating a previously destroyed instance
if (savedInstanceState != null) {
// Restore value of fileUri from saved state
fileUri = savedInstanceState.getString(FILE_URI);
} else {
// Probably initialize values for a new instance
}
}
#Override protected void onSaveInstanceState(Bundle savedInstanceState) {
savedInstanceState.putString(FILE_URI, fileUri);
// Always call the superclass so it can save the view hierarchy state
super.onSaveInstanceState(savedInstanceState);
}

You can try it. it worked for me
Step 1. Create class GetPathFromUri.class
import android.annotation.SuppressLint;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.provider.OpenableColumns;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import java.io.*;
public class GetPathFromUri {
#SuppressLint("NewApi")
public static String getPath(final Context context, final Uri uri) {
#SuppressLint("ObsoleteSdkInt") final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// 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];
}
if ("raw".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
if ("5D68-9217".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
if (id != null && id.startsWith("raw:")) {
return id.substring(4);
}
String[] contentUriPrefixesToTry = new String[]{
"content://downloads/public_downloads",
"content://downloads/my_downloads"
};
for (String contentUriPrefix : contentUriPrefixesToTry) {
Uri contentUri = ContentUris.withAppendedId(Uri.parse(contentUriPrefix), Long.valueOf(id));
try {
String path = getDataColumn(context, contentUri, null, null);
if (path != null) {
return path;
}
} catch (Exception e) {}
}
// path could not be retrieved using ContentResolver, therefore copy file to accessible cache using streams
String fileName = getFileName(context, uri);
File cacheDir = getDocumentCacheDir(context);
File file = generateFileName(fileName, cacheDir);
String destinationPath = null;
if (file != null) {
destinationPath = file.getAbsolutePath();
saveFileFromUri(context, uri, destinationPath);
}
return destinationPath;
}
// 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 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.
*/
private static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
final String column = "_data";
final String[] projection = {column};
try (Cursor cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null)) {
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
}
return null;
}
/**
* #param uri The Uri to check.
* #return Whether the Uri authority is ExternalStorageProvider.
*/
private 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.
*/
private 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.
*/
private static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
public static String getFileName(#NonNull Context context, Uri uri) {
String mimeType = context.getContentResolver().getType(uri);
String filename = null;
if (mimeType == null && context != null) {
String path = getPath(context, uri);
if (path == null) {
filename = getName(uri.toString());
} else {
File file = new File(path);
filename = file.getName();
}
} else {
Cursor returnCursor = context.getContentResolver().query(uri, null,
null, null, null);
if (returnCursor != null) {
int nameIndex = returnCursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
returnCursor.moveToFirst();
filename = returnCursor.getString(nameIndex);
returnCursor.close();
}
}
return filename;
}
public static String getName(String filename) {
if (filename == null) {
return null;
}
int index = filename.lastIndexOf('/');
return filename.substring(index + 1);
}
public static File getDocumentCacheDir(#NonNull Context context) {
File dir = new File(context.getCacheDir(), DOCUMENTS_DIR);
if (!dir.exists()) {
dir.mkdirs();
}
logDir(context.getCacheDir());
logDir(dir);
return dir;
}
public static final String DOCUMENTS_DIR = "documents";
static final String TAG = "FileUtils";
private static final boolean DEBUG = false; // Set to true to enable logging
private static void logDir(File dir) {
if (!DEBUG) return;
Log.d(TAG, "Dir=" + dir);
File[] files = dir.listFiles();
for (File file : files) {
Log.d(TAG, "File=" + file.getPath());
}
}
#Nullable
public static File generateFileName(#Nullable String name, File directory) {
if (name == null) {
return null;
}
File file = new File(directory, name);
if (file.exists()) {
String fileName = name;
String extension = "";
int dotIndex = name.lastIndexOf('.');
if (dotIndex > 0) {
fileName = name.substring(0, dotIndex);
extension = name.substring(dotIndex);
}
int index = 0;
while (file.exists()) {
index++;
name = fileName + '(' + index + ')' + extension;
file = new File(directory, name);
}
}
try {
if (!file.createNewFile()) {
return null;
}
} catch (IOException e) {
Log.w(TAG, e);
return null;
}
logDir(directory);
return file;
}
private static void saveFileFromUri(Context context, Uri uri, String destinationPath) {
InputStream is = null;
BufferedOutputStream bos = null;
try {
is = context.getContentResolver().openInputStream(uri);
bos = new BufferedOutputStream(new FileOutputStream(destinationPath, false));
byte[] buf = new byte[1024];
is.read(buf);
do {
bos.write(buf);
} while (is.read(buf) != -1);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (is != null) is.close();
if (bos != null) bos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
Step 2:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
try {
String path = GetPathFromUri.getPath(this, data.getData())
Glide.with(this).load(path).into(imageView);
// Glide is library https://github.com/bumptech/glide
} catch (IOException e) {
e.printStackTrace();
}
}else if(resultCode == Activity.RESULT_CANCELED) {
// User Cancelled the actiongetUriForFile
}
}

File path in real device shows wrong path

In my class, I use the following method to get the file path, but it works only on the emulator; why?
My problem is with the real device (Samsung Galaxy j5):
The files in the internal hard:Encounter with Exception.
The files in the external hard: return a null path.
How can I fix this problem? The problem is in which part of my code.
UploaderActivity :
public class UploaderActictivity extends AppCompatActivity implements View.OnClickListener {
private static final String TAG ="MyPath" ;
private static final int REQUEST_CODE =10052 ;
Uri URI =null ;
private Button button;
private String path;
TextView messageText;
Button uploadButton,BrowsButton;
int serverResponseCode = 0;
ProgressDialog dialog = null;
ImageView imNotify;
JustifiedTextView js;
#RequiresApi(api = Build.VERSION_CODES.N)
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_uploader);
js=findViewById(R.id.textDes);
js.setText( getResources().getString(des) + "\n" +
getResources().getString(des1)+ "\n" +
getResources().getString(des2)+ "\n" +
getResources().getString(des3));
uploadButton = findViewById(R.id.upload);
BrowsButton = findViewById(R.id.browse);
BrowsButton.setOnClickListener(this);
uploadButton.setOnClickListener(this);
messageText =findViewById(R.id.messageText);
imNotify =findViewById(R.id.notify);
String msg=messageText.getText().toString();
if(msg.isEmpty()){
messageText.setVisibility(View.GONE);
imNotify.setVisibility(View.GONE);
}
}
#Override
public void onClick(View v) {
if(v==BrowsButton) {
showFileChooser();
}
if(v==uploadButton) {
//upload to site
if(path != null){
dialog = ProgressDialog.show(UploaderActictivity.this, "", "آپلود فایل، لطفاً صبر کنید...", true);
new Thread(new Runnable() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
imNotify.setVisibility(View.VISIBLE);
messageText.setVisibility(View.VISIBLE);
messageText.setText("در حال آپلود فایل...");
}
});
uploadFile(path);
}
}).start();
}
else{
Toast.makeText(UploaderActictivity.this,"ابتدا یک فایل انتخاب کنید!",Toast.LENGTH_SHORT).show();
}
}
}
private void showFileChooser() {
Intent intent = new Intent();
//sets the select file to all types of files
intent.setType("*/*");
//allows to select data and return it
intent.setAction(Intent.ACTION_GET_CONTENT);
//starts new activity to select file and return data
startActivityForResult(Intent.createChooser(intent,"انتخاب فایل..."),REQUEST_CODE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == REQUEST_CODE) {
if (data == null) {
//no data present
return;
}
Uri currFileURI = data.getData();
path = FilePath.getPath(getApplicationContext(),currFileURI);
if(path != null && !path.equals("") ){
imNotify.setVisibility(View.VISIBLE);
messageText.setVisibility(View.VISIBLE);
Log.i(TAG, "Selected File Path:" + path);
messageText.setText(path);
}else{
Toast.makeText(this,"شما قادر به آپلود محتوای فایل نیستید!",Toast.LENGTH_SHORT).show();
}
}
}
}
public int uploadFile(final String path) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
final int UserID =prefs.getInt("UserID", 0);
HttpURLConnection conn;
DataOutputStream dos;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 5 * 1024 * 1024;
File sourceFile = new File(path);
String[] parts = path.split("/");
final String fileName = UserID + "_" + parts[parts.length-1];
if (!sourceFile.isFile()) {
dialog.dismiss();
Log.e("uploadFile", "Source File not exist :"
+path);
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("محتوایی در این مسیر وجود ندارد!"
+path);
}
});
return 0;
}
else
{
try {
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(AppConfig.upLoadServerUri);
// Open a HTTP connection to the URL
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if(serverResponseCode == 200){
runOnUiThread(new Runnable() {
public void run() {
String msg = "فايل مورد نظر آپلود شد." +
"\n" + getResources().getString(DescriptionForUpload)
;
messageText.setText(msg);
Toast.makeText(UploaderActictivity.this, "آپلود فايل کامل شد.",
Toast.LENGTH_SHORT).show();
}
});
}
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("MalformedURLException Exception : check script url.");
Toast.makeText(UploaderActictivity.this, "MalformedURLException",
Toast.LENGTH_SHORT).show();
Toast.makeText(UploaderActictivity.this, "مشکلی رخ داده است!", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Got Exception : see logcat ");
Toast.makeText(UploaderActictivity.this, "Got Exception : see logcat ",
Toast.LENGTH_SHORT).show();
Toast.makeText(UploaderActictivity.this, "مشکلی رخ داده است!", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception", "Exception : "
+ e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
} // End else block
}
}
FilePath class:
public class FilePath {
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
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];
}
}
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);
}
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);
}
}
else if ("content".equalsIgnoreCase(uri.getScheme())) {
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
}
return null;
}
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;
}
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri
.getAuthority());
}
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri
.getAuthority());
}
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri
.getAuthority());
}
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri
.getAuthority());
}
}

What you are trying to do is wrong to begin with.
Do not try to obtain a file system path.
You got a content uri. Use it to open an input stream. After that you can use the content as if you had opened a file input stream.

Insert Image with description to database table

I am new in android I want to upload image with description and data should be stored in database table.
public class Send_News extends AppCompatActivity implements View.OnClickListener {
private static final int PICK_FILE_REQUEST = 1;
// private static final String TAG = MainActivity.class.getSimpleName();
private String selectedFilePath;
private String SERVER_URL = "";
ImageView ivAttachment,ntwrk;
Button bUpload;
TextView tvFileName,tvHeading;
ProgressDialog dialog;
String answer;
private String TAG = Send_News.class.getSimpleName();
InterstitialAd mInterstitialAd;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send__news);
ivAttachment = (ImageView) findViewById(R.id.ivAttachment);
ntwrk = (ImageView) findViewById(R.id.ntwrk1);
bUpload = (Button) findViewById(R.id.b_upload);
tvFileName = (TextView) findViewById(R.id.tv_file_name);
tvHeading = (TextView) findViewById(R.id.tvHeading);
ivAttachment.setOnClickListener(this);
bUpload.setOnClickListener(this);
mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId(getString(R.string.fullscreen_ad_unit_id));
AdRequest adRequest = new AdRequest.Builder()
//.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
// Check the LogCat to get your test device ID
// .addTestDevice("ca-app-pub-4514287475704546~4354128510")
.build();
// Load ads into Interstitial Ads
mInterstitialAd.loadAd(adRequest);
mInterstitialAd.setAdListener(new AdListener() {
public void onAdLoaded() {
showInterstitial();
}
});
}
private void showInterstitial() {
if (mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
}
}
//Checking Internet Connectivity//
//Internet Connectivity//
#Override
public void onClick(View v) {
if(v== ivAttachment){
//checking internet connection
checkConnection();
//on attachment icon click
}
if(v== bUpload){
//on upload button Click
if(selectedFilePath != null){
dialog = ProgressDialog.show(Send_News.this,"","Uploading File...",true);
new Thread(new Runnable() {
#Override
public void run() {
//creating new thread to handle Http Operations
uploadFile(selectedFilePath);
}
}).start();
}else{
Toast.makeText(Send_News.this,"Please choose a File First",Toast.LENGTH_SHORT).show();
}
}
}
//Checking ntwrk
private void checkConnection() {
if(isOnline()){
showFileChooser();
// Toast.makeText(SendNews.this, "You are connected to Internet", Toast.LENGTH_SHORT).show();
ntwrk.setVisibility(View.GONE);
bUpload.setVisibility(View.VISIBLE);
}else{
View view=findViewById(R.id.coordinatorlayout);
Snackbar.make(view, "No Internet Connection", Snackbar.LENGTH_INDEFINITE).setDuration(5000)
.setActionTextColor(getResources().getColor(R.color.cardview_dark_background)).show();
// view.setBackgroundColor(ContextCompat.getColor(this, R.color.snack_text_action));
// snackbar.show();
// Toast.makeText(MainActivity.this, "You are not connected to Internet", Toast.LENGTH_SHORT).show();
ntwrk.setVisibility(View.VISIBLE);
tvHeading.setVisibility(View.GONE);
bUpload.setVisibility(View.GONE);
}
}
//ntwrk connection
private boolean isOnline() {
ConnectivityManager cm = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
return true;
} else {
return false;
}
}
private void showFileChooser() {
Intent intent = new Intent();
//sets the select file to all types of files
intent.setType("*/*");
//allows to select data and return it
intent.setAction(Intent.ACTION_GET_CONTENT);
//starts new activity to select file and return data
startActivityForResult(Intent.createChooser(intent,"Choose File to Upload.."),PICK_FILE_REQUEST);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == Activity.RESULT_OK){
if(requestCode == PICK_FILE_REQUEST){
if(data == null){
//no data present
return;
}
Uri selectedFileUri = data.getData();
selectedFilePath = FilePath.getPath(this,selectedFileUri);
Log.i(TAG,"Selected File Path:" + selectedFilePath);
if(selectedFilePath != null && !selectedFilePath.equals("")){
tvFileName.setText(selectedFilePath);
}else{
Toast.makeText(this,"Cannot upload file to server",Toast.LENGTH_SHORT).show();
}
}
}
}
//android upload file to server
public int uploadFile(final String selectedFilePath){
int serverResponseCode = 0;
HttpURLConnection connection;
DataOutputStream dataOutputStream;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead,bytesAvailable,bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File selectedFile = new File(selectedFilePath);
String[] parts = selectedFilePath.split("/");
final String fileName = parts[parts.length-1];
if (!selectedFile.isFile()){
dialog.dismiss();
runOnUiThread(new Runnable() {
#Override
public void run() {
tvFileName.setText("Source File Doesn't Exist: " + selectedFilePath);
}
});
return 0;
}else{
try{
FileInputStream fileInputStream = new FileInputStream(selectedFile);
URL url = new URL(SERVER_URL);
connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);//Allow Inputs
connection.setDoOutput(true);//Allow Outputs
connection.setUseCaches(false);//Don't use a cached Copy
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("ENCTYPE", "multipart/form-data");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
connection.setRequestProperty("uploaded_file",selectedFilePath);
//creating new dataoutputstream
dataOutputStream = new DataOutputStream(connection.getOutputStream());
//writing bytes to data outputstream
dataOutputStream.writeBytes(twoHyphens + boundary + lineEnd);
dataOutputStream.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ selectedFilePath + "\"" + lineEnd);
dataOutputStream.writeBytes(lineEnd);
//returns no. of bytes present in fileInputStream
bytesAvailable = fileInputStream.available();
//selecting the buffer size as minimum of available bytes or 1 MB
bufferSize = Math.min(bytesAvailable,maxBufferSize);
//setting the buffer as byte array of size of bufferSize
buffer = new byte[bufferSize];
//reads bytes from FileInputStream(from 0th index of buffer to buffersize)
bytesRead = fileInputStream.read(buffer,0,bufferSize);
//loop repeats till bytesRead = -1, i.e., no bytes are left to read
while (bytesRead > 0){
//write the bytes read from inputstream
dataOutputStream.write(buffer,0,bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable,maxBufferSize);
bytesRead = fileInputStream.read(buffer,0,bufferSize);
}
dataOutputStream.writeBytes(lineEnd);
dataOutputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
serverResponseCode = connection.getResponseCode();
String serverResponseMessage = connection.getResponseMessage();
Log.i(TAG, "Server Response is: " + serverResponseMessage + ": " + serverResponseCode);
//response code of 200 indicates the server status OK
if(serverResponseCode == 200){
runOnUiThread(new Runnable() {
#Override
public void run() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(Send_News.this);
// Setting Dialog Title
alertDialog.setTitle("Thanks For Uploading News...");
// Setting Dialog Message
alertDialog.setMessage("Are you want to upload more News");
// Setting Icon to Dialog
alertDialog.setIcon(R.drawable.ic_addfile);
// Setting Positive "Yes" Button
alertDialog.setPositiveButton("YES", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which) {
Intent intent= new Intent(Send_News.this,Send_News.class);
startActivity(intent);
// Write your code here to invoke YES event
// Toast.makeText(getApplicationContext(), "You clicked on YES", Toast.LENGTH_SHORT).show();
}
});
// Setting Negative "NO" Button
alertDialog.setNegativeButton("NO", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to invoke NO event
Intent intent= new Intent(Send_News.this,MainActivity.class);
startActivity(intent);
// Toast.makeText(getApplicationContext(), "You clicked on NO", Toast.LENGTH_SHORT).show();
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
// tvFileName.setText("File Upload completed.\n\n You can see the uploaded file here: \n\n" + "http://coderefer.com/extras/uploads/"+ fileName);
}
});
}
//closing the input and output streams
fileInputStream.close();
dataOutputStream.flush();
dataOutputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(Send_News.this,"File Not Found",Toast.LENGTH_SHORT).show();
}
});
} catch (MalformedURLException e) {
e.printStackTrace();
Toast.makeText(Send_News.this, "URL error!", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(Send_News.this, "Cannot Read/Write File!", Toast.LENGTH_SHORT).show();
}
dialog.dismiss();
return serverResponseCode;
}
}
}
Filepath Class
class FilePath {
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)) {
// 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());
}
}
In this code, text data is not uploaded and image is uploaded but not in database table. I want to upload image and text data in database table. So please tell me how i will do simultaneously uploading text and image in database table

Two possible ways to achieve this task
Storing in Local Database:
if you want to save images and their description locally in app, then use sqlite database or realm to do that. You can create table in database having column of image and description. You can save image in base64 or using other encoding methods. While retrieving from database, you need to decode image to display.
Uploading Images to Cloud Server:
if you want to upload images to cloud server then, you must create database table on server and call API that you must write in web language to upload your images to server. You can store image in folder on server and save path of folder along with image name in image column of created database.

Get Path from another app (WhatsApp)

I'm not getting Path from image or video from uri that I receive from whatsApp.
Uri comes like this: content://com.whatsapp.provider.media/item/16695
Media coming from Gallery, Downloads ands others are fine.
Anyone know how to get Path? This is the code I'm using:
public String getMediaPath(Context context, Uri uri) {
if (DEBUG)
Log.d(TAG + " File -",
"Authority: " + uri.getAuthority() +
", Fragment: " + uri.getFragment() +
", Port: " + uri.getPort() +
", Query: " + uri.getQuery() +
", Scheme: " + uri.getScheme() +
", Host: " + uri.getHost() +
", Segments: " + uri.getPathSegments().toString()
);
// DocumentProvider
if (DocumentsContract.isDocumentUri(context, uri)) {
// 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;
}
public String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String[] column = { MediaStore.Images.Media.DATA };
final String[] projection = {
column[0]
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
if (DEBUG)
DatabaseUtils.dumpCursor(cursor);
final int index = cursor.getColumnIndexOrThrow(column[0]);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.contentprovider".equals(uri.getAuthority());
}
The result of this log:
if (DEBUG)
Log.d(TAG + " File -",
"Authority: " + uri.getAuthority() +
", Fragment: " + uri.getFragment() +
", Port: " + uri.getPort() +
", Query: " + uri.getQuery() +
", Scheme: " + uri.getScheme() +
", Host: " + uri.getHost() +
", Segments: " + uri.getPathSegments().toString()
);
is this:
Authority: com.whatsapp.provider.media, Fragment: null, Port: -1, Query: null, Scheme: content, Host: com.whatsapp.provider.media, Segments: [item, 16348]
And the cursor on getDataColumn looks like this:
>>>>> Dumping cursor
android.content.ContentResolver$CursorWrapperInner#1fc81ac
I/System.out: 0 {
I/System.out: }
I/System.out: <<<<<

You can try this it will help for you.You can't get path from WhatsApp directly.If you need an file path first copy file and send new file path.
Using the code below
public static String getFilePathFromURI(Context context, Uri contentUri) {
String fileName = getFileName(contentUri);
if (!TextUtils.isEmpty(fileName)) {
File copyFile = new File(TEMP_DIR_PATH + fileName+".jpg");
copy(context, contentUri, copyFile);
return copyFile.getAbsolutePath();
}
return null;
}
public static String getFileName(Uri uri) {
if (uri == null) return null;
String fileName = null;
String path = uri.getPath();
int cut = path.lastIndexOf('/');
if (cut != -1) {
fileName = path.substring(cut + 1);
}
return fileName;
}
public static void copy(Context context, Uri srcUri, File dstFile) {
try {
InputStream inputStream = context.getContentResolver().openInputStream(srcUri);
if (inputStream == null) return;
OutputStream outputStream = new FileOutputStream(dstFile);
IOUtils.copy(inputStream, outputStream);
inputStream.close();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
Then IOUtils class is like below
public class IOUtils {
private static final int BUFFER_SIZE = 1024 * 2;
private IOUtils() {
// Utility class.
}
public static int copy(InputStream input, OutputStream output) throws Exception, IOException {
byte[] buffer = new byte[BUFFER_SIZE];
BufferedInputStream in = new BufferedInputStream(input, BUFFER_SIZE);
BufferedOutputStream out = new BufferedOutputStream(output, BUFFER_SIZE);
int count = 0, n = 0;
try {
while ((n = in.read(buffer, 0, BUFFER_SIZE)) != -1) {
out.write(buffer, 0, n);
count += n;
}
out.flush();
} finally {
try {
out.close();
} catch (IOException e) {
Log.e(e.getMessage(), e.toString());
}
try {
in.close();
} catch (IOException e) {
Log.e(e.getMessage(), e.toString());
}
}
return count;
}
}

you can try to this , then you get a bitmap of selected image and then you can easily find it's native path from Device Default Gallery.
Bitmap roughBitmap= null;
try {
// Works with content://, file://, or android.resource:// URIs
InputStream inputStream =
getContentResolver().openInputStream(uri);
roughBitmap= BitmapFactory.decodeStream(inputStream);
// calc exact destination size
Matrix m = new Matrix();
RectF inRect = new RectF(0, 0, roughBitmap.Width, roughBitmap.Height);
RectF outRect = new RectF(0, 0, dstWidth, dstHeight);
m.SetRectToRect(inRect, outRect, Matrix.ScaleToFit.Center);
float[] values = new float[9];
m.GetValues(values);
// resize bitmap if needed
Bitmap resizedBitmap = Bitmap.CreateScaledBitmap(roughBitmap, (int) (roughBitmap.Width * values[0]), (int) (roughBitmap.Height * values[4]), true);
string name = "IMG_" + new Java.Text.SimpleDateFormat("yyyyMMdd_HHmmss").Format(new Java.Util.Date()) + ".png";
var sdCardPath= Environment.GetExternalStoragePublicDirectory("DCIM").AbsolutePath;
Java.IO.File file = new Java.IO.File(sdCardPath);
if (!file.Exists())
{
file.Mkdir();
}
var filePath = System.IO.Path.Combine(sdCardPath, name);
} catch (FileNotFoundException e) {
// Inform the user that things have gone horribly wrong
}

You can't get a path to file from WhatsApp. They don't expose it now. The only thing you can get is InputStream:
InputStream is = getContentResolver().openInputStream(Uri.parse("content://com.whatsapp.provider.media/item/16695"));
Using is you can show a picture from WhatsApp in your app.

You can also convert the URI to file and then to bytes if you want to upload the photo to your server.
Check out : https://www.stackoverflow.com/a/49575321

Using the code example below will return to you the bitmap :
BitmapFactory.decodeStream(getContentResolver().openInputStream(Uri.parse("content://com.whatsapp.provider.media/item/128752")))
After that you all know what you have to do.

It works for me for opening small text file... I didn't try in other file
protected void viewhelper(Intent intent) {
Uri a = intent.getData();
if (!a.toString().startsWith("content:")) {
return;
}
//Ok Let's do it
String content = readUri(a);
//do something with this content
}
here is the readUri(Uri uri) method
private String readUri(Uri uri) {
InputStream inputStream = null;
try {
inputStream = getContentResolver().openInputStream(uri);
if (inputStream != null) {
byte[] buffer = new byte[1024];
int result;
String content = "";
while ((result = inputStream.read(buffer)) != -1) {
content = content.concat(new String(buffer, 0, result));
}
return content;
}
} catch (IOException e) {
Log.e("receiver", "IOException when reading uri", e);
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
Log.e("receiver", "IOException when closing stream", e);
}
}
}
return null;
}
I got it from this repository https://github.com/zhutq/android-file-provider-demo/blob/master/FileReceiver/app/src/main/java/com/demo/filereceiver/MainActivity.java
I modified some code so that it work.
Manifest file:
<activity android:name=".MainActivity">
<intent-filter >
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="*/*" />
</intent-filter>
</activity>
You need to add
#Override
protected void onCreate(Bundle savedInstanceState) {
/*
* Your OnCreate
*/
Intent intent = getIntent();
String action = intent.getAction();
String type = intent.getType();
//VIEW"
if (Intent.ACTION_VIEW.equals(action) && type != null) {
viewhelper(intent); // Handle text being sent
}
}

protected void onCreate(Bundle savedInstanceState) {
/*
* Your OnCreate
*/
Intent intent = getIntent();
String action = intent.getAction();
String type = intent.getType();
//VIEW"
if (Intent.ACTION_VIEW.equals(action) && type != null) {viewhekper(intent);//Handle text being sent}

Unable to access file from uri

I am trying to access a file using Storage Access Framework which I have stored in locally and send it to server. but when ever I try to get file using URI I get NullPointerException. However I get the URI of file. but catches exception when converting to file by getting path.
Minimum API is 17
uriString =
content://com.android.providers.downloads.documents/document/349
warantyButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(Intent. ACTION_OPEN_DOCUMENT );
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
Intent i = Intent.createChooser(intent, "File");
getActivity().startActivityForResult(i, FILE_REQ_CODE);
//Toast.makeText(getContext(),"Files",Toast.LENGTH_SHORT).show();
}
});
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == FILE_REQ_CODE) {
if (resultCode == RESULT_OK) {
String path="";
Uri uri = data.getData();
if (uri != null) {
try {
file = new File(getPath(getContext(),uri));
if(file!=null){
ext = getMimeType(uri);
sendFileToServer(file,ext);
}
} catch (Exception e) {
Toast.makeText(getContext(),getString(R.string.general_error_retry),Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
}
}
}
public static String getPath(Context context, Uri uri) throws URISyntaxException {
if ("content".equalsIgnoreCase(uri.getScheme())) {
String[] projection = { "_data" };
Cursor cursor = null;
try {
cursor = context.getContentResolver().query(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow("_data");
if (cursor.moveToFirst()) {
return cursor.getString(column_index);
}
} catch (Exception e) {
// Eat it
}
}
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}

I am trying to access a file using Storage Access Framework which I have stored in locally and send it to server.
Your users are welcome to choose anything they want, which does not include files that you can access directly (e.g., in Google Drive, on removable storage).
but catches exception when converting to file by getting path
You cannot "convert to file by getting path". The path portion of a content Uri is a meaningless set of characters that identifies the particular piece of content. Next, you will think that all computers have a file on their local filesystem at the path /questions/43818723/unable-to-access-file-from-uri, just because https://stackoverflow.com/questions/43818723/unable-to-access-file-from-uri happens to be a valid Uri.
So, get rid of getPath().
Use ContentResolver and openInputStream() to get an InputStream on the content. Either use that stream directly or use it in conjunction with a FileOutputStream on your own file, to make a local copy of the content that you can use as a file.

#CommonsWare answer is correct
here is code snippet
To read file content from Uri :
// Use ContentResolver to access file from Uri
InputStream inputStream = null;
try {
inputStream = mainActivity.getContentResolver().openInputStream(uri);
assert inputStream != null;
// read file content
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String mLine;
StringBuilder stringBuilder = new StringBuilder();
while ((mLine = bufferedReader.readLine()) != null) {
stringBuilder.append(mLine);
}
Log.d(TAG, "reading file :" + stringBuilder);
To save file from Uri to local copy inside your app dir :
String dirPath = "/data/user/0/-your package name -/newLocalFile.name"
try (InputStream ins = mainActivity.getContentResolver().openInputStream(uri)) {
File dest = new File(dirPath);
try (OutputStream os = new FileOutputStream(dest)) {
byte[] buffer = new byte[4096];
int length;
while ((length = ins.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
os.flush();
} catch (Exception e) {
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}

Try Below Code For Getting Path:
public String getPath(Uri uri) throws URISyntaxException {
final boolean needToCheckUri = Build.VERSION.SDK_INT >= 19;
String selection = null;
String[] selectionArgs = null;
// Uri is different in versions after KITKAT (Android 4.4), we need to
// deal with different Uris.
if (needToCheckUri && DocumentsContract.isDocumentUri(mainActivity, uri)) {
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
return Environment.getExternalStorageDirectory() + "/" + split[1];
} else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
uri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
} else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("image".equals(type)) {
uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
selection = "_id=?";
selectionArgs = new String[] {
split[1]
};
}
}
if ("content".equalsIgnoreCase(uri.getScheme())) {
String[] projection = {
MediaStore.Images.Media.DATA
};
Cursor cursor = null;
try {
cursor = mainActivity.getContentResolver()
.query(uri, projection, selection, selectionArgs, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
if (cursor.moveToFirst()) {
return cursor.getString(column_index);
}
} catch (Exception e) {
}
} else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
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());
}`