Resize bitmap: Bitmap.createScaledBitmap vs BitmapFactory.Options.inSampleSize

بِسْــــــــــــــــمِ اﷲِالرَّحْمَنِ اارَّحِيم

bismillaahirrahmaanirrahiim

السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ

Assalamu'alaikum warahmatullahi wabarakatuh

In this article, two approach are provided to resize bitmap:
- Bitmap.createScaledBitmap
- BitmapFactory.Options.inSampleSize

But...which one is better? In the code, the process time are also provided for reference.

java code:

package com.resize.image;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
 
public class MainActivity extends Activity {
  
 Button btnProcessA, btnProcessB;
 ImageView processedImgA, processedImgB;
 TextView statusA, statusB;
 String fullUrl=null;
  
 /*
  * Normally do not hardcode "/sdcard/";
  * use Environment.getExternalStorageDirectory().getPath() instead
  */
 static String imgSouce = "/sunil.png";
  
 static int w = 250;
 static int h = 250;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
 
        btnProcessA = (Button)findViewById(R.id.processbtna);
        btnProcessB = (Button)findViewById(R.id.processbtnb);
     processedImgA = (ImageView)findViewById(R.id.processedimg_a);
     processedImgB = (ImageView)findViewById(R.id.processedimg_b);
     statusA = (TextView)findViewById(R.id.statusa);
     statusB = (TextView)findViewById(R.id.statusb);
      
     btnProcessA.setOnClickListener(new OnClickListener(){
 
   @Override
   public void onClick(View v) {
    resizeA();
     
   }});
      
     btnProcessB.setOnClickListener(new OnClickListener(){
 
   @Override
   public void onClick(View v) {
    resizeB();
     
   }});
 
    }
 
    private void resizeA(){
      
     Long startTime = System.currentTimeMillis();
      fullUrl = Environment.getExternalStorageDirectory().getAbsolutePath().toString()
         + "/"
         + imgSouce; 
     Bitmap bitmap_Source = BitmapFactory.decodeFile(fullUrl);
     float factorH = h / (float)bitmap_Source.getHeight();
     float factorW = w / (float)bitmap_Source.getWidth();
     float factorToUse = (factorH > factorW) ? factorW : factorH;
     Bitmap bm = Bitmap.createScaledBitmap(bitmap_Source,
       (int) (bitmap_Source.getWidth() * factorToUse),
       (int) (bitmap_Source.getHeight() * factorToUse),
       false);
      
     Long endTime = System.currentTimeMillis();
     Long processTime = endTime - startTime;
     statusA.setText("Process Time (MilliSeconds): " + String.valueOf(processTime));
      
     processedImgA.setImageBitmap(bm);
 
    }
     
    private void resizeB(){
      
     Long startTime = System.currentTimeMillis();
      
     BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
  bmpFactoryOptions.inJustDecodeBounds = true;
  Bitmap bm = BitmapFactory.decodeFile(fullUrl , bmpFactoryOptions);
   
  int heightRatio = (int)Math.ceil(bmpFactoryOptions.outHeight/(float)h);
  int widthRatio = (int)Math.ceil(bmpFactoryOptions.outWidth/(float)w);
   
  if (heightRatio > 1 || widthRatio > 1)
  {
   if (heightRatio > widthRatio){
    bmpFactoryOptions.inSampleSize = heightRatio; 
   } else {
    bmpFactoryOptions.inSampleSize = widthRatio;  
   }  
  }
   
  bmpFactoryOptions.inJustDecodeBounds = false;
  bm = BitmapFactory.decodeFile(fullUrl, bmpFactoryOptions);
   
  Long endTime = System.currentTimeMillis();
     Long processTime = endTime - startTime;
     statusB.setText("Process Time (MilliSeconds): " + String.valueOf(processTime));
   
  processedImgB.setImageBitmap(bm);
    }
 
}

xml code:

The Result is:

Cheers Guys!!
 

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ٱلْحَمْدُ لِلَّهِ رَبِّ ٱلْعَٰلَمِين

Alhamdulilah hirobil alamin

وَ السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ

wassalamualaikum warahmatullahi wabarakatuh

Artikel Resize bitmap: Bitmap.createScaledBitmap vs BitmapFactory.Options.inSampleSize , Diterbitkan oleh scodeaplikasi pada Sabtu, 09 Maret 2013. Semoga artikel ini dapat menambah wawasan Anda. Website ini dipost dari beberapa sumber, bisa cek disini sumber, Sobat diperbolehkan mengcopy paste / menyebar luaskan artikel ini, karena segala yang dipost di public adalah milik public. Bila Sobat tertarik Ingin membuat software, membeli software, membeli source code ,Dengan Cara menghubungi saya Ke Email: Fajarudinsidik@gmail.com, atau No Hp/WA : (fajar) : 085369237896, (puat) : 085267792168.