CODEWITHSUNDEEP
androideclipse
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Priest

Reputation: 11

What is android.R import , If i import it their is an error if i don't every thing works fine . Android

Why do eclipse itself imports android.R because when it does it gives me an error while using bitmaps and getting pictures from the drawable files from the res folder of my project. below is my code . The error comes in the line:

Bitmap tempBitmap = BitmapFactory.decodeResource(myContext.getResources(), R.drawable.card_back);

It says card_back cannot be resolved even when their is a png file in the drawable folder inside res . Also if i remove import android.R from the file it works perfectly fine , i am new to android any help is welcomed . 

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Random;
import android.R;

import android.R.color;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.hardware.Camera.Size;
import android.view.MotionEvent;
import android.view.View;
import android.graphics.Color;;




@Override
public void onSizeChanged (int w, int h, int oldw, int oldh){
     super.onSizeChanged(w, h, oldw, oldh);
        screenW = w;
        screenH = h;

        Bitmap tempBitmap = BitmapFactory.decodeResource(myContext.getResources(), R.drawable.card_back);
        scaledCardW = (int) (screenW/8);
        scaledCardH = (int) (scaledCardW*1.28);
        cardBack = Bitmap.createScaledBitmap(tempBitmap, scaledCardW, scaledCardH, false); 

      initCards();
      dealCard();
      drawCard(discardPile);
     // initCards();


}

Upvotes: 0

Views: 67

Answers (2)

Víctor Albertos
Víctor Albertos

Reputation: 8293

That happens because you are importing the android resources (android.R), not yours. If you want use any resource stayed in the res folder, you must import nothing, because the auto-generate R.class scope is accesible from any class of your project.

Upvotes: 0

Kevin Krumwiede
Kevin Krumwiede

Reputation: 10288

You should usually import your project's own R class, i.e., your.app.package.R. The values you define under your project's res/ folder will be generated into that class. When you need to refer to the Android R for a stock string or something, use its fully qualified name, e.g., android.R.string.yes.

Upvotes: 1

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