Android Open Source - android-stackblur Main Activity

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From Project

Back to project page android-stackblur.

License

The source code is released under:

Apache License

Java Source Code

package com.example.stackblurdemo;
//from  w  w  w  .j  a  v  a2  s  .co  m
import java.io.IOException;
import java.io.InputStream;

import roboguice.activity.RoboActivity;
import roboguice.inject.InjectView;
import android.content.Context;
import android.content.Intent;
import android.content.res.AssetManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.Spinner;
import android.widget.ToggleButton;

import com.enrique.stackblur.StackBlurManager;

public class MainActivity extends RoboActivity {
    
  @InjectView(R.id.imageView)        ImageView    _imageView;
  @InjectView(R.id.blur_amount)      SeekBar      _seekBar;
  @InjectView(R.id.toggleButton)     ToggleButton _toggleButton;
  @InjectView(R.id.typeSelectSpinner) Spinner     _typeSelectSpinner;
  
  
  private StackBlurManager _stackBlurManager;
  
  private String IMAGE_TO_ANALYZE = "android_platform_256.png";
  
  private int blurMode;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    _stackBlurManager = new StackBlurManager(getBitmapFromAsset(this, "android_platform_256.png"));
    
    _seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
      
      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {
        
      }
      
      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {
        
      }
      
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress,
                                          boolean fromUser) {
        onBlur();
      }
    });
    
    _toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
          IMAGE_TO_ANALYZE = "image_transparency.png";
          _stackBlurManager = new StackBlurManager(getBitmapFromAsset(getApplicationContext(), IMAGE_TO_ANALYZE));
          onBlur();
        } else {
          IMAGE_TO_ANALYZE = "android_platform_256.png";
          _stackBlurManager = new StackBlurManager(getBitmapFromAsset(getApplicationContext(), IMAGE_TO_ANALYZE));
          onBlur();
        }
      }
    });

    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.blur_modes, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    _typeSelectSpinner.setAdapter(adapter);
    _typeSelectSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        setBlurMode(position);
      }

      @Override
      public void onNothingSelected(AdapterView<?> parent) {

      }
    });
  }

  @Override public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.activity_main, menu);
    return true;
  }

  @Override public boolean onOptionsItemSelected(MenuItem item) {
    super.onOptionsItemSelected(item);
    switch(item.getItemId()) {
      case R.id.menu_benchmark:
        Intent intent = new Intent(this, BenchmarkActivity.class);
        startActivity(intent);
        return true;
      default:
        return false;
    }
  }

  private Bitmap getBitmapFromAsset(Context context, String strName) {
        AssetManager assetManager = context.getAssets();
        InputStream istr;
        Bitmap bitmap = null;
        try {
            istr = assetManager.open(strName);
            bitmap = BitmapFactory.decodeStream(istr);
        } catch (IOException e) {
            return null;
        }
        return bitmap;
    }

  public void setBlurMode(int mode) {
    this.blurMode = mode;
    onBlur();
  }

  private void onBlur() {
    int radius = _seekBar.getProgress() * 5;
    switch(blurMode) {
      case 0:
        _imageView.setImageBitmap( _stackBlurManager.process(radius) );
        break;
      case 1:
        _imageView.setImageBitmap( _stackBlurManager.processNatively(radius) );
        break;
      case 2:
        _imageView.setImageBitmap( _stackBlurManager.processRenderScript(this, radius) );
        break;
    }
  }
}

Java Source Code List

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