EDIT First of all, I am new with Android and don't have much grip when it comes to gallery functionality and manipulating its method so please have a little patience and guide me of what I am doing wrong.
Scenario I am setting my app photos inside a grid view (kind of file explorer). When I browse and open some image by clicking some folder in gridview using intent (note that this is not Intent.ACTION_PICK), just moving from one activity to another and passing the path of clicked item in putString() method. Till this point, it works fine but the problem is that I don't know how to retrieve the information about the Uri, Bitmap etc.
Can you please guide me what strategy I have to use in this scenario. I have seen many question for the past 2 days here at SO, but most of them are using gallery Action Pick intent, and getting results in onActivityResult() and using getData() method to retrieve information about the picked image. I also managed to perform it successfully when I opened the camera and used onActivityResult() method to retrieve the info but this is different scenario ( atleast for me as a beginner ) Please guide me the right way of how to figure it out. All I have is the path of that particular image opened in new activity.
Below is the activity code, I used to open an image from my Gridview activity.
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.PdfWriter;
import com.scanlibrary.ScanConstants;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import static com.itextpdf.text.Image.getInstance;
/**
* Created by ADMIN on 6/23/2016.
*/
public class ImageOpenedActivity extends Activity {
ImageView imageView;
String received;
private Button pdfConverter, openPDFConverter;
String path;
String outputPath;
File openfile;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if (extras == null) {
received = null;
}
else {
received = extras.getString("Image");
}
}
else {
received = (String) savedInstanceState.getSerializable("Image");
}
setContentView(R.layout.imageopened);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateTime = sdf.format(Calendar.getInstance().getTime()); // reading local time in the system
pdfConverter = (Button) findViewById(R.id.PDF);
openPDFConverter = (Button) findViewById(R.id.openPDF);
imageView = (ImageView) findViewById(R.id.imageView);
imageView.setImageURI(Uri.parse(received));
outputPath = ScanConstants.IMAGE_PATH + File.separator + "PDF" + dateTime + ".pdf";
Bitmap viewBitmap = Bitmap.createBitmap(400, 400, Bitmap.Config.ARGB_8888);//i is imageview whch u want to convert in bitmap
Canvas canvas = new Canvas(viewBitmap);
imageView.draw(canvas);
Uri tempUri = getImageUri(getApplicationContext(), viewBitmap);
// CALL THIS METHOD TO GET THE ACTUAL PATH
File finalFile = new File(getRealPathFromURI(tempUri));
path = String.valueOf(finalFile);
//openPDFConverter.setOnClickListener(new View.OnClickListener() {
//@Override
//public void onClick(View v) {
// openfile = new File(outputPath);
// Intent target = new Intent(Intent.ACTION_VIEW);
// target.setDataAndType(Uri.fromFile(openfile), "application/pdf");
// target.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
//
// Intent intent = Intent.createChooser(target, "Open File");
// try {
// startActivity(intent);
// } catch (ActivityNotFoundException e) {
// Log.e("Errorrrr ::::", outputPath);
// }
// }
// });
// // PDF Converter onclick method
// pdfConverter.setOnClickListener(new View.OnClickListener() {
//@Override
//public void onClick(View view) {
// // Will run the conversion in another thread to avoid the UI to be frozen
// Thread t = new Thread() {
//public void run() {
// SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// String dateTime = sdf.format(Calendar.getInstance().getTime()); // reading local time in the system
//
// // Input file
// //inputPath = Environment.getExternalStorageDirectory() + File.separator + "test" + dateTime + ".jpg";
//
// // Output file
// // outputPath = Environment.getExternalStorageDirectory() + File.separator + "PDF"+dateTime+".pdf";
// outputPath = ScanConstants.IMAGE_PATH + File.separator + "PDF" + dateTime + ".pdf";
//
// Log.e("Passed path is:::", path);
//// Run conversion
//final boolean result = ImageOpenedActivity.this.convertToPdf(path, outputPath);
//
// // Notify the UI
// runOnUiThread(new Runnable() {
//public void run() {
// if (result) {
// openPDFConverter.setVisibility(Button.VISIBLE);
// Toast.makeText(ImageOpenedActivity.this, "The JPG was successfully converted to PDF.", Toast.LENGTH_SHORT).show();
// }
// else
// Toast.makeText(ImageOpenedActivity.this, "An error occured while converting the JPG to PDF.", Toast.LENGTH_SHORT).show();
// }
// });
// }
// };
// t.start();
// }
// });
}
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
Log.e("Bitmap received ::::", String.valueOf(inImage));
//inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
Log.e("getImageURI path:", String.valueOf(path));
return Uri.parse(path);
}
public String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
Log.e("getRealPathFromURI:::", String.valueOf(uri));
Log.e("URI received", String.valueOf(uri));
return cursor.getString(idx);
}
public boolean convertToPdf(String jpgFilePath, String outputPdfPath) {
try {
// Check if Jpg file exists or not
File inputFile = new File(jpgFilePath);
if (!inputFile.exists()) {
Log.e("Input File::", String.valueOf(inputFile));
throw new Exception("File '" + jpgFilePath + "' doesn't exist.");
}
// Create output file if needed
File outputFile = new File(outputPdfPath);
if (!outputFile.exists()) {
outputFile.createNewFile();
Log.e("Output File::", String.valueOf(outputFile));
}
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(outputFile));
document.open();
com.itextpdf.text.Image image = getInstance(jpgFilePath);
image.setAbsolutePosition(0, 0);
image.scaleAbsolute((float) 2549 * (float) .24, (float) 3304 * (float) .24);
image.scaleToFit((float) 2549 * (float) .24, (float) 3304 * (float) .24);
document.add(image);
Log.e("After document added::", String.valueOf(image));
document.close();
return true;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
}
