Android Open Source - filtrations Main Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package sk.feromakovi.android.opencv.filtrations;
//from w  w  w .j a va  2s .com
import java.util.ArrayList;
import java.util.List;

import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;

import sk.feromakovi.android.opencv.filtrations.processing.ErodeProcessor;
import sk.feromakovi.android.opencv.filtrations.processing.Filter2dProcessor;
import sk.feromakovi.android.opencv.filtrations.processing.DilateProcessor;
import sk.feromakovi.android.opencv.filtrations.processing.ImageProcessor;
import sk.feromakovi.android.opencv.filtrations.util.ImagePicker;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {

  @SuppressWarnings("serial")
  private final List<ImageProcessor> mImageProcessors = new ArrayList<ImageProcessor>() {
    {
      add(new DilateProcessor());
      add(new ErodeProcessor());
      add(new Filter2dProcessor());
    }
  };

  private final ImagePicker mImagePicker = new ImagePicker(this);

  private ImageView mImage;
  private Button mResetButton;

  private BaseLoaderCallback mOpenCVCallBack = new BaseLoaderCallback(this) {
    @Override
    public void onManagerConnected(int status) {
      switch (status) {
      case LoaderCallbackInterface.SUCCESS: 
        Toast.makeText(MainActivity.this, "OpenCV loaded", Toast.LENGTH_SHORT).show();
        break;
      default: 
        super.onManagerConnected(status);
      }
    }
  };

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

    this.mImage = (ImageView) findViewById(R.id.ImageView_image);
    this.mResetButton = (Button) findViewById(R.id.Button_resetButton);

    if (savedInstanceState != null) {
      if (mImagePicker.dispatchRestoreState(savedInstanceState) != null) {
        mImage.setImageBitmap(mImagePicker.getReceivedBitmap());
      }
    }

    if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_8, this,
        mOpenCVCallBack))
      Toast.makeText(this, "Could not load OpenCV", Toast.LENGTH_SHORT)
          .show();
  }

  @Override
  public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    mImagePicker.dispatchSaveState(outState);
  }

  @Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    mImagePicker.dispatchActivityResult(requestCode, resultCode, data, mImage);
    if(resultCode == Activity.RESULT_OK)
      mResetButton.setVisibility(View.VISIBLE);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.menu_action_import_picture:
      mImagePicker.pickImage();
      return true;
    case R.id.menu_action_fire:
      if (mImagePicker.getReceivedBitmap() != null) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        CharSequence[] options = new CharSequence[mImageProcessors
            .size()];
        for (int i = 0; i < mImageProcessors.size(); i++)
          options[i] = mImageProcessors.get(i).getName();
        builder.setItems(options, this).create().show();
      } else
        Toast.makeText(this, "No image!!!", Toast.LENGTH_SHORT).show();
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  public void onResetButtonClick(View resetButton) {
    if (mImagePicker.getReceivedBitmap() != null)
      mImage.setImageBitmap(mImagePicker.getReceivedBitmap());
    else
      mImage.setImageResource(R.drawable.ic_no_image);
    this.mResetButton.setVisibility(View.GONE);
  }

  @Override
  public void onClick(DialogInterface arg0, int which) {
    ImageProcessor selectedProcessor = mImageProcessors.get(which);
    Bitmap processedBitmap = selectedProcessor.processBitmap(mImagePicker
        .getReceivedBitmap());
    if (processedBitmap != null) {
      mImage.setImageBitmap(processedBitmap);
      mResetButton.setVisibility(View.VISIBLE);
    } else
      Toast.makeText(this, "Operation failed!", Toast.LENGTH_SHORT)
          .show();
  }
}

Java Source Code List

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