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POGetting Pixel Colour in Android from an imported image from gallery?
 

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  1. POGetting Pixel Colour in Android from an imported image from gallery?
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    <p>The problem of this code is,it only gets the colour value for all of the picture not for the place the user clicks/touches! there must be a simple problem, i believe! Here's the code, let's see what you can get! ;)</p> <pre><code>import java.io.FileNotFoundException; import java.util.Locale; import android.app.Activity; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Color; import android.graphics.drawable.BitmapDrawable; import android.net.Uri; import android.os.Bundle; import android.speech.tts.TextToSpeech; import android.speech.tts.TextToSpeech.OnInitListener; import android.view.MotionEvent; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; public class MPActivity extends Activity { private TextToSpeech mTts; private ImageView targetImage; private TextView textView; private TextView textViewCol; private TextView textViewVal; private boolean hasTTSBeenInitialized = false; private int imageWidth; private int imageHeight; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button buttonLoadImage = (Button)findViewById(R.id.loadimage); textView = (TextView) findViewById(R.id.textView); textViewCol = (TextView) findViewById(R.id.textViewColor); targetImage = (ImageView) findViewById(R.id.targetimage); textViewVal = (TextView) findViewById(R.id.textViewValue); targetImage = (ImageView)findViewById(R.id.targetimage); buttonLoadImage.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View arg0) { // TODO Auto-generated method stub Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent, 0); }}); mTts = new TextToSpeech(this, new OnInitListener() { @Override public void onInit(int status) { hasTTSBeenInitialized = true; } }); mTts.setLanguage(Locale.US); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK){ Uri targetUri = data.getData(); Bitmap bitmap; try { bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(targetUri)); //w2,h2 imageWidth = bitmap.getWidth(); imageHeight = bitmap.getHeight(); targetImage.setImageBitmap(bitmap); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } targetImage.setOnTouchListener(new ImageView.OnTouchListener(){ public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub int x = ((int)event.getX() / v.getWidth() ) * imageWidth; int y = ((int)event.getY() / v.getHeight()) * imageHeight; textView.setText("Touch coordinates : "+String.valueOf(event.getX())+"x"+String.valueOf(event.getY())); ImageView imageView = ((ImageView)v); Bitmap bitmap = ((BitmapDrawable)imageView.getDrawable()).getBitmap(); // Calculation -&gt; x, y - image space int pixel = bitmap.getPixel(x,y); textViewVal.setText("[" + Color.red(pixel) + "," + Color.green(pixel) + "," + Color.blue(pixel) + "]"); if ((Color.red(pixel) &gt; 200) &amp;&amp; (Color.blue(pixel) &lt; 10) &amp;&amp; (Color.green(pixel) &lt; 10)) { if(hasTTSBeenInitialized){ mTts.speak("Color is RED", TextToSpeech.QUEUE_FLUSH, null); } textViewCol.setText("Color is Red."); } return true; } }); } } </code></pre>
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    1. USuser1056066
    1. USuser1056066
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    1. COMight be me that is too tired but I can not find any place in the code where you assign values to x and y.
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      1. POGetting Pixel Colour in Android from an imported image from gallery?
      1. USHenrikS
    2. COHere, I updated my codes and I ALSO put RED as an example to be read by the program ... thank you...
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      1. POGetting Pixel Colour in Android from an imported image from gallery?
      1. USuser1056066
 

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