Android Open Source - field-data-app Choose Image Fragment

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License

The source code is released under:

MIT License

Java Source Code

package nz.cri.gns.springs.fragments;
/*from w w  w .  j a  va  2s  . c o m*/
import java.util.List;

import static nz.cri.gns.springs.fragments.ImageFragment.IMAGE_THUMBNAIL_WIDTH;
import static nz.cri.gns.springs.fragments.ImageFragment.IMAGE_THUMBNAIL_HEIGHT;

import nz.cri.gns.springs.R;
import nz.cri.gns.springs.SpringsApplication;
import nz.cri.gns.springs.db.Survey;
import nz.cri.gns.springs.db.SurveyImage;
import nz.cri.gns.springs.util.UiUtil;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.GridLayout;
import android.widget.ImageView;
import android.widget.RelativeLayout;

/**
 * Dialog box which allows the user to select from images associated with
 * a geothermal feature survey.
 * @author duncanw
 */
public class ChooseImageFragment extends SpringsDialogFragment implements OnTouchListener {

  private Survey currentSurvey;
  
  private static final String SURVEY_KEY = "currentSurvey";
  
  /**
   * Key for the intent extra-data containing the path of the image file selected.
   * (returned to the onActivityResult method of the activity that opened the dialog box).
   */
  public static final String IMAGE_FILE_KEY = "imageFile";
  
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
      
      View rootView = inflater.inflate(R.layout.dialog_choose_image, container, false);
      getDialog().setTitle(R.string.choose_image_dialog_title);
      
      displayImages(rootView);
      
      return rootView;
    }
    
    @Override
    public void onSaveInstanceState(Bundle instanceState) {
      super.onSaveInstanceState(instanceState);
      instanceState.putSerializable(SURVEY_KEY, currentSurvey);
    }
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      if (savedInstanceState != null) {
        currentSurvey = (Survey)savedInstanceState.getSerializable(SURVEY_KEY);
        getHelper().getSurveyDao().refresh(currentSurvey);
      }
    }    
    
    private void displayImages(View rootView) {
      
      List<SurveyImage> images = SurveyImage.getBySurvey(currentSurvey, getHelper());
      GridLayout photoList = (GridLayout)rootView.findViewById(R.id.photo_list);
      photoList.removeAllViews();
      
      for (SurveyImage surveyImage : images) {
        displayImage(photoList, surveyImage);
      }
    }  
    
    private void displayImage(GridLayout photoList, SurveyImage surveyImage) {
      
    String imageFile = surveyImage.getFileName();
        ImageView imgView = new ImageView(SpringsApplication.getAppContext());
        imgView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
        
        imgView.setImageBitmap(UiUtil.loadImage(imageFile, IMAGE_THUMBNAIL_WIDTH, IMAGE_THUMBNAIL_HEIGHT));
        
        imgView.setAdjustViewBounds(true);
        imgView.setMaxHeight(IMAGE_THUMBNAIL_WIDTH);
        imgView.setMaxWidth(IMAGE_THUMBNAIL_HEIGHT);
        imgView.setId(surveyImage.getId().intValue());
        imgView.setOnTouchListener(this);
            
        GridLayout.LayoutParams layoutParams = new GridLayout.LayoutParams();
        layoutParams.setMargins(20, 20, 20, 20);
        
        RelativeLayout imageWrapper = new RelativeLayout(this.getActivity().getBaseContext());
        imageWrapper.addView(imgView);       
        
        photoList.addView(imageWrapper, layoutParams);
   
    }    


  @Override
  public boolean onTouch(View view, MotionEvent motionEvent) {
    
    boolean consumedEvent = false;
    if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {    
      imageSelected(view);
      consumedEvent = true;
    } 
    
    return consumedEvent;
  } 
  
  private void imageSelected(View imageView) {
    
      String imageFile = getHelper().getSurveyImageDao().queryForId(Long.valueOf(imageView.getId())).getFileName();
      dismiss();
      getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK, new Intent().putExtra(IMAGE_FILE_KEY, imageFile));
  }
  
  public void setCurrentSurvey(Survey currentSurvey) {
    this.currentSurvey = currentSurvey;
  }
}

Java Source Code List

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