Resmi PDF'ye dönüştürün

Question

Android uygulamasında PDF biçiminde bir resim göndermem gerekiyor, ancak bitmap'i PDF'ye dönüştürme konusunda bir fikrim yok.

Sadece metin içeren pdf yazabiliyorum.

Herhangi bir çözüm var mı?

Answer 1

Sanırım metni pdf'ye dönüştürmek için iText Kitaplığı'nı kullanıyorsunuz. Resmi pdf'ye dönüştürmek için bunu kullanın. Buradan

import java.io.*; 
import com.lowagie.text.*; 
import com.lowagie.text.pdf.*; 
public class imagesPDF 
{  
    public static void main(String arg[])throws Exception 
    {     
     Document document=new Document(); 
     PdfWriter.getInstance(document,new FileOutputStream("YourPDFHere.pdf")); 
     document.open(); 
     Image image = Image.getInstance ("yourImageHere.jpg"); 
     document.add(new Paragraph("Your Heading for the Image Goes Here")); 
     document.add(image);    
     document.close(); 
    } 
} 

Answer 2

İndir kaynak kodu (Convert Image to pdf in android programattically)

MainActivity.java

package com.deepshikha.convertbitmap; 

import android.Manifest; 
import android.app.ProgressDialog; 
import android.content.Context; 
import android.content.Intent; 
import android.content.pm.PackageManager; 
import android.database.Cursor; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.graphics.pdf.PdfDocument; 
import android.net.Uri; 
import android.provider.MediaStore; 
import android.support.v4.app.ActivityCompat; 
import android.support.v4.content.ContextCompat; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.DisplayMetrics; 
import android.util.Log; 
import android.view.Display; 
import android.view.View; 
import android.view.WindowManager; 
import android.widget.Button; 
import android.widget.ImageView; 
import android.widget.Toast; 

import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 

public class MainActivity extends AppCompatActivity implements View.OnClickListener { 
    public static final int GALLERY_PICTURE = 1; 
    Button btn_select, btn_convert; 
    ImageView iv_image; 
    boolean boolean_permission; 
    boolean boolean_save; 
    Bitmap bitmap; 
    public static final int REQUEST_PERMISSIONS = 1; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     init(); 
     listener(); 
     fn_permission(); 
    } 

    private void init() { 
     btn_select = (Button) findViewById(R.id.btn_select); 
     btn_convert = (Button) findViewById(R.id.btn_convert); 
     iv_image = (ImageView) findViewById(R.id.iv_image); 
    } 

    private void listener() { 
     btn_select.setOnClickListener(this); 
     btn_convert.setOnClickListener(this); 
    } 

    @Override 
    public void onClick(View view) { 
     switch (view.getId()) { 
      case R.id.btn_select: 
       Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI); 
       startActivityForResult(intent, GALLERY_PICTURE); 
       break; 

      case R.id.btn_convert: 
       if (boolean_save){ 

        Intent intent1=new Intent(getApplicationContext(),PDFViewActivity.class); 
        startActivity(intent1); 

       }else { 
        createPdf(); 
       } 
       break; 


     } 
    } 

    private void createPdf(){ 
     WindowManager wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE); 
     Display display = wm.getDefaultDisplay(); 
     DisplayMetrics displaymetrics = new DisplayMetrics(); 
     this.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics); 
     float hight = displaymetrics.heightPixels ; 
     float width = displaymetrics.widthPixels ; 

     int convertHighet = (int) hight, convertWidth = (int) width; 

//  Resources mResources = getResources(); 
//  Bitmap bitmap = BitmapFactory.decodeResource(mResources, R.drawable.screenshot); 

     PdfDocument document = new PdfDocument(); 
     PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(bitmap.getWidth(), bitmap.getHeight(), 1).create(); 
     PdfDocument.Page page = document.startPage(pageInfo); 

     Canvas canvas = page.getCanvas(); 


     Paint paint = new Paint(); 
     paint.setColor(Color.parseColor("#ffffff")); 
     canvas.drawPaint(paint); 



     bitmap = Bitmap.createScaledBitmap(bitmap, bitmap.getWidth(), bitmap.getHeight(), true); 

     paint.setColor(Color.BLUE); 
     canvas.drawBitmap(bitmap, 0, 0 , null); 
     document.finishPage(page); 


     // write the document content 
     String targetPdf = "/sdcard/test.pdf"; 
     File filePath = new File(targetPdf); 
     try { 
      document.writeTo(new FileOutputStream(filePath)); 
      btn_convert.setText("Check PDF"); 
      boolean_save=true; 
     } catch (IOException e) { 
      e.printStackTrace(); 
      Toast.makeText(this, "Something wrong: " + e.toString(), Toast.LENGTH_LONG).show(); 
     } 

     // close the document 
     document.close(); 
    } 



    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 

     if (requestCode == GALLERY_PICTURE && resultCode == RESULT_OK) { 

      if (resultCode == RESULT_OK) { 
       Uri selectedImage = data.getData(); 
       String[] filePathColumn = {MediaStore.Images.Media.DATA}; 

       Cursor cursor = getContentResolver().query(
         selectedImage, filePathColumn, null, null, null); 
       cursor.moveToFirst(); 

       int columnIndex = cursor.getColumnIndex(filePathColumn[0]); 
       String filePath = cursor.getString(columnIndex); 
       cursor.close(); 


       bitmap = BitmapFactory.decodeFile(filePath); 
       iv_image.setImageBitmap(bitmap); 


       btn_convert.setClickable(true); 
      } 
     } 
    } 

    private void fn_permission() { 
     if ((ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)|| 
       (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)) { 

      if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.READ_EXTERNAL_STORAGE))) { 
      } else { 
       ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE}, 
         REQUEST_PERMISSIONS); 

      } 

      if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE))) { 
      } else { 
       ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 
         REQUEST_PERMISSIONS); 

      } 
     } else { 
      boolean_permission = true; 


     } 
    } 
    @Override 
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { 
     super.onRequestPermissionsResult(requestCode, permissions, grantResults); 
     if (requestCode == REQUEST_PERMISSIONS) { 

      if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 

       boolean_permission = true; 


      } else { 
       Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show(); 

      } 
     } 
    } 


} 

teşekkürler!