Checking imageview resource on actionlistener rather than the id of the imageview

问题

I have 16 imageview, each set to onBtnClick as a listner, inside this method it checks whether the imageview id corresponds to a specific id, I need to change this so it checks the image resource inside the imageview, e.g.

public void onBtnClicked(View v)
{

  if( v.getId() == R.id.img1 )
  {
      Intent guess = new Intent(this, com.Logo_Master.Guesslogo.class);
      guess.putExtra("image","img1");
      startActivity(guess);
  }
}

needs to be something like:

public void onBtnClicked(View v)
{

  if( v.getId() == R.drawable.img1 )
  {
      Intent guess = new Intent(this, com.Logo_Master.Guesslogo.class);
      guess.putExtra("image","img1");
      startActivity(guess);
  }
}

or something similar.....so it checks the image inside the imageview rather than the imageview......

Thank you.

/EDIT/

Random random = new Random( System.currentTimeMillis() );
    List<Integer> generated = new ArrayList<Integer>();
    for (int i = 0; i < imageViews.length; i++) {

        int v = imageViews[i];
        int next = random.nextInt( 16 );
        if ( !generated.contains( next ) ) {
            generated.add( next );
            ImageView iv = (ImageView) findViewById( v );
            iv.setImageResource( images[next] );
            Object tag = (Object) new Integer(getImageName(this, String.valueOf(images[next])));
            iv.setTag(tag);
        }
        else {
            i--;
        }
    }

public static int getImageId(Context context, String imageName) {
return context.getResources().getIdentifier("id/" + imageName + "guess", null, context.getPackageName());
}


public static int getImageName(Context context, String imageName) 
{
return context.getResources().getIdentifier("drawable/" + imageName + "guess", null,     context.getPackageName());
}

回答1:

You can use tags to achieve this:

When creating your ImageView (in code or in XML), define a tag:

android:tag = "tag"

Object tag = (Object) new Integer(R.drawable.img1);
imageView.setTag(tag);

Then retrieve the tag before you need it by:

Object tag = imageView.getTag();
int drawableId = Integer.parseInt(tag.toString());
if( drawableId == R.drawable.img1 ) {
      ....
}

Good luck!

回答2:

There is no way to do this directly with an imageView. There is however nothing stopping you from subclassing imageView and adding the required functionality. For example:

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageButton;

public class MyImageButton extends ImageButton {

private static final String ANDROID_NAME_SPACE = "http://schemas.android.com/apk/res/android";
private int mDrawableResId = -1;

public MyImageButton(Context context) {
    super(context);
    // TODO Auto-generated constructor stub
}

public MyImageButton(Context context, AttributeSet attrs) {
    super(context, attrs);
    mDrawableResId = attrs.getAttributeResourceValue(ANDROID_NAME_SPACE, "src", -1);
}

public MyImageButton(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    mDrawableResId = attrs.getAttributeResourceValue(ANDROID_NAME_SPACE, "src", -1);
}
@Override
public void setImageResource(int resId){
    super.setImageResource(resId);
    mDrawableResId = resId;
}

public int getDrawableResId(){
    return mDrawableResId;
}
}

This catches setting the drawable directly and from XML.

(diclaimer: I have never tried this however it should do exactly what you want. The example above does work in the emulator. If anyone has any opinions on this approach I would love to hear them.)

来源：https://stackoverflow.com/questions/10886304/checking-imageview-resource-on-actionlistener-rather-than-the-id-of-the-imagevie

标签

android

image

button

imageview