Android Document picker - New Dev Point

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.OpenableColumns;
import android.widget.ImageView;
import android.widget.Toast;

import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;

public class DocPickerClass {
    private static int RESULT_LOAD_IMAGE = 783;
    private DocPickerMethod docPickerMethod;
    private Activity activity;

    public DocPickerClass(DocPickerMethod docPickerMethod, Activity activity) {
        this.docPickerMethod = docPickerMethod;
        this.activity = activity;
    }

    public void openPicker() {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("*/*");
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        /*String[] mimeTypes = {"application/pdf", "application/msword", "application/xlsx"};
        intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
        intent.setAction(Intent.ACTION_GET_CONTENT);*/
        try {
            activity.startActivityForResult(
                    Intent.createChooser(intent, "Select a File to Upload"),
                    RESULT_LOAD_IMAGE);
        } catch (android.content.ActivityNotFoundException ex) {
            // Potentially direct the user to the Market with a Dialog
            Toast.makeText(activity, "Please install a File Manager.",
                    Toast.LENGTH_SHORT).show();
        }

    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (requestCode == RESULT_LOAD_IMAGE && resultCode == Activity.RESULT_OK && data != null) {
            Uri uri = data.getData();
            try {
                if (uri != null) {
                    String path = uri.getPath();
                    File file = new File(path);
                    if(file.exists()){
                        docPickerMethod.selectedFile(file);
                    }else{
                        Cursor cursor = activity.getApplicationContext().getContentResolver()
                                .query(uri, null, null, null, null, null);
                        if (cursor != null && cursor.moveToFirst()) {
                            byte[] fileData = readTextFromUri(uri);
                            // Note it's called "Display Name".  This is
                            // provider-specific, and might not necessarily be the file name.
                            String fileName = cursor.getString(
                                    cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
                            System.out.println("displayName: " + fileName);
                            cursor.close();
                            docPickerMethod.fileData(fileData, fileName );
                        }
                    }
                }

//                System.out.println(fileData);
            } catch (IOException e) {
                docPickerMethod.docPickingError(e);
            }catch (Exception e){
                docPickerMethod.docPickingError(e);
            }
        }
    }
    /*private String readTextFromUri(Uri uri) throws IOException {

        InputStream inputStream = activity.getContentResolver().openInputStream(uri);
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                inputStream));
        StringBuilder stringBuilder = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            stringBuilder.append(line);
        }

        return stringBuilder.toString();
    }*/

    private byte[] readTextFromUri(Uri uri) throws IOException {

        InputStream inputStream = activity.getContentResolver().openInputStream(uri);
        // this dynamically extends to take the bytes you read
        ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();

        // this is storage overwritten on each iteration with bytes
        int bufferSize = 1024;
        byte[] buffer = new byte[bufferSize];

        // we need to know how may bytes were read to write them to the byteBuffer
        int len = 0;
        while ((len = inputStream.read(buffer)) != -1) {
            byteBuffer.write(buffer, 0, len);
        }

        // and then we can return your byte array.
        return byteBuffer.toByteArray();
    }
    public interface DocPickerMethod {
        void fileData(byte[] data, String fileName);
        void selectedFile(File file);
        void docPickingError(Exception ex);
    }
}

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import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.net.Uri;

import android.provider.OpenableColumns;

import android.widget.ImageView;

import android.widget.Toast;

import com.bumptech.glide.Glide;

import com.bumptech.glide.request.RequestOptions;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

public class DocPickerClass {

private static int RESULT_LOAD_IMAGE = 783;

private DocPickerMethod docPickerMethod;

private Activity activity;

public DocPickerClass(DocPickerMethod docPickerMethod, Activity activity) {

this.docPickerMethod = docPickerMethod;

this.activity = activity;

}

public void openPicker() {

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);

intent.setType("*/*");

intent.addCategory(Intent.CATEGORY_OPENABLE);

/*String[] mimeTypes = {"application/pdf", "application/msword", "application/xlsx"};

intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);

intent.setAction(Intent.ACTION_GET_CONTENT);*/

try {

activity.startActivityForResult(

Intent.createChooser(intent, "Select a File to Upload"),

RESULT_LOAD_IMAGE);

} catch (android.content.ActivityNotFoundException ex) {

// Potentially direct the user to the Market with a Dialog

Toast.makeText(activity, "Please install a File Manager.",

Toast.LENGTH_SHORT).show();

}

public void onActivityResult(int requestCode, int resultCode, Intent data) {

if (requestCode == RESULT_LOAD_IMAGE && resultCode == Activity.RESULT_OK && data != null) {

Uri uri = data.getData();

try {

if (uri != null) {

String path = uri.getPath();

File file = new File(path);

if(file.exists()){

docPickerMethod.selectedFile(file);

}else{

Cursor cursor = activity.getApplicationContext().getContentResolver()

.query(uri, null, null, null, null, null);

if (cursor != null && cursor.moveToFirst()) {

byte[] fileData = readTextFromUri(uri);

// Note it's called "Display Name". This is

// provider-specific, and might not necessarily be the file name.

String fileName = cursor.getString(

cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));

System.out.println("displayName: " + fileName);

cursor.close();

docPickerMethod.fileData(fileData, fileName );

}

// System.out.println(fileData);

} catch (IOException e) {

docPickerMethod.docPickingError(e);

}catch (Exception e){

docPickerMethod.docPickingError(e);

}

/*private String readTextFromUri(Uri uri) throws IOException {

InputStream inputStream = activity.getContentResolver().openInputStream(uri);

BufferedReader reader = new BufferedReader(new InputStreamReader(

inputStream));

StringBuilder stringBuilder = new StringBuilder();

String line;

while ((line = reader.readLine()) != null) {

stringBuilder.append(line);

}

return stringBuilder.toString();

}*/

private byte[] readTextFromUri(Uri uri) throws IOException {

InputStream inputStream = activity.getContentResolver().openInputStream(uri);

// this dynamically extends to take the bytes you read

ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();

// this is storage overwritten on each iteration with bytes

int bufferSize = 1024;

byte[] buffer = new byte[bufferSize];

// we need to know how may bytes were read to write them to the byteBuffer

int len = 0;

while ((len = inputStream.read(buffer)) != -1) {

byteBuffer.write(buffer, 0, len);

}

// and then we can return your byte array.

return byteBuffer.toByteArray();

}

public interface DocPickerMethod {

void fileData(byte[] data, String fileName);

void selectedFile(File file);

void docPickingError(Exception ex);

}

implement ImagePickerClass.ImagePickerMethod in your activity or fragment

@Override
public void fileData(byte[] data, String fileName) {
        
}
    @Override
    public void selectedFile(File file) {
       
    }

@Override

public void fileData(byte[] data, String fileName) {

}

@Override

public void selectedFile(File file) {

}

initlize object

private DocPickerClass docPickerClass;
docPickerClass = new DocPickerClass(this, this);

1 2	private DocPickerClass docPickerClass; docPickerClass = new DocPickerClass(this, this);

call

docPickerClass.openPicker();

1	docPickerClass.openPicker();

in onActivityResult

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (docPickerClass != null)
        docPickerClass.onActivityResult(requestCode, resultCode, data);
    }

@Override

public void onActivityResult(int requestCode, int resultCode, Intent data) {

if (docPickerClass != null)

docPickerClass.onActivityResult(requestCode, resultCode, data);

}