Android Open Source - android_plugin_camera Image Preview

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From Project

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License

The source code is released under:

Copyright (c) 2014, Sana All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistr...

Java Source Code

package com.sana.android.plugin.camera;
//w  ww.j a v a  2  s  .  c o  m

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

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import com.sana.android.plugin.camera.R;

public class ImagePreview extends Activity{

  private ImageView imgPreview;
  Uri fileuri,dataUri;
  String mimeType;
    byte[] bytes = null;
  ImageButton retake,keep;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    
    Log.d("wel","intent");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.preview);
    Log.d("set","set preview");
    try{
      
    final Intent extras=getIntent();
    fileuri = Uri.parse(extras.getStringExtra("uri"));
          
    imgPreview= (ImageView) findViewById(R.id.imageView1);
    imgPreview.setImageURI(fileuri);
    imgPreview.setRotation(90);
          
    retake = (ImageButton) findViewById(R.id.button1);
      keep = (ImageButton) findViewById(R.id.button2);
      
      retake.setOnClickListener(
          new View.OnClickListener() {
                  @Override
                  public void onClick(View v) {
                    finish();
                  }
          }
          );
      
      
      keep.setOnClickListener(
              new View.OnClickListener() {
                  @Override
                  public void onClick(View v) {
                                          
                    try{
                    dataUri=Uri.parse(extras.getStringExtra("datauri"));
                    mimeType=extras.getStringExtra("mime");
                    bytes = convertImageToByte(fileuri) ;
                  OutputStream os = null;
                  try{
                      os = getContentResolver().openOutputStream(dataUri);
                      os.write(bytes);
                  } catch(Exception e){
                  }  
                  finally {
                      if(os != null)
                try {
                  os.close();
                } catch (IOException e) {
                  e.printStackTrace();
                }
                  }
                  Intent result = new Intent();
                  result.setDataAndType(dataUri,dataUri.toString() );
                  setResult(RESULT_OK,result);
                  
                  
                  }catch(Exception e)
                  {
                    e.printStackTrace();
                  }
                    
                    deleteFiles();
                    finish();
                    
                  }
                  }
                  );
      
      
    }catch(Exception e)
    {
      Log.d("hello","exception");
    }

  }
  
private void deleteFiles() {
   //delete temporary file

    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
              Environment.MEDIA_UNKNOWN),"sana");
    if (mediaStorageDir.isDirectory()) {
        String[] children = mediaStorageDir.list();
        for (int i = 0; i < children.length; i++) {
            new File(mediaStorageDir, children[i]).delete();
        }
    }
  }


  @Override
  public void onBackPressed() {
      // do something on back.
      return;
  }
  
  public byte[] convertImageToByte(Uri uri){
    byte[] data=null;
        try {
            ContentResolver cr = getBaseContext().getContentResolver();
            InputStream inputStream = cr.openInputStream(uri);
            Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
            data = baos.toByteArray();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        return data;
    }
}

Java Source Code List

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