Ошибка Drawable Array ошибки null указателя в Android

Question

Я выполняю некоторую задачу по активности, которая использует выталкиваемый массив, который приводит меня к ошибке, любезно проверьте это. Любая помощь будет высоко оценен.

package com.example.waleedmalik.computerparts; 

import android.annotation.TargetApi; 
import android.content.Intent; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.drawable.Drawable; 
import android.os.Build; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.Button; 
import android.widget.ImageView; 
import android.widget.RadioButton; 
import android.widget.RadioGroup; 
import android.widget.Toast; 

public class GameActivity extends AppCompatActivity { 
ImageView iv; 
Button btnNext; 
RadioGroup rgp; 
RadioButton rb1, rb2, rb3, rb4; 

int [] questions = { 

     R.drawable.cd, 
     R.drawable.cdrom, 
     R.drawable.cpu, 
     R.drawable.flashusb, 
     R.drawable.floppy, 
     R.drawable.harddisk, 
     R.drawable.mic, 
     R.drawable.monitor, 
     R.drawable.mouse, 
     R.drawable.printer, 
     R.drawable.ram, 
     R.drawable.speakers, 
     R.drawable.usb, 
     R.drawable.dvdrom, 
     R.drawable.dvd, 
     R.drawable.motherboard 

}; 

String ans[] = { 
     "CD", 
     "CD-ROM", 
     "CPU", 
     "CARD-READER", 
     "FLOPPY DISK", 
     "HARD-DISK", 
     "MICROPHONE", 
     "MONITOR", 
     "MOUSE", 
     "PRINTER", 
     "RAM", 
     "SPEAKERS", 
     "USB", 
     "DVD-ROM", 
     "DVD", 
     "MOTHER-BOARD" 
}; 

String opt[] = {"RAM", "DISK", "CD", "FLASH-PLAYER", "HARD-DISK", "DVD-ROM", "CD-ROM", "FLOPPY DISK", "FLASH-USB", "CD-DRIVE", "PRINTER", "CPU","USB", "CARD-READER", "PEND-DRIVE", "LASER", 
     "HARD-DISK", "FLOPPY-DISK", "RAM", "JACKET", "DVD-ROM", "MOTHER-BOARD", "HARD-DISK", "SMART-PHONE", "SPEAKER", "RECEIVER", "MICROPHONE", "HEAD-PHONE", "TELEVISION", "MONITOR", "SCREEN", "DISPLAY", 
     "MICE", "MOUSE", "HOLDER", "SLIDER", "FAX", "PRINTER", "DESKTOP", "MICROWAVE-OVEN", "ROM", "RAM", "CD-ROM", "HARD-DISK", "MICROPHONE", "SPEAKERS", "BASS-SYSTEM", "ANTENNA", "PORTABLE", "PLUGIN", "USB", "HARD-DRIVE", 
     "DVD-ROM", "HARD-DISK", "MOUSE", "FLOPPY-DISK", "CD", "DVD", "MAGNETIC-TAPE", "SPINNER", "MOTHER-BOARD", "CIRCUIT", "KEYBOARD", "DASHBOARD"}; 


int flag = 0; 
public static int marks, correct, wrong; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_game); 

    iv = (ImageView) findViewById(R.id.imageView); 
    btnNext = (Button) findViewById(R.id.next); 
    rgp = (RadioGroup) findViewById(R.id.rg); 
    rb1 = (RadioButton) findViewById(R.id.rb1); 
    rb2 = (RadioButton) findViewById(R.id.rb2); 
    rb3 = (RadioButton) findViewById(R.id.rb3); 
    rb4 = (RadioButton) findViewById(R.id.rb4); 

    iv.setImageResource(questions[flag]); 
    rb1.setText(opt[0]); 
    rb2.setText(opt[1]); 
    rb3.setText(opt[2]); 
    rb4.setText(opt[3]); 


    Toast.makeText(this, "Negative Marking: " + SecondActivity.tbflag, 
Toast.LENGTH_LONG).show(); 


    btnNext.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 

      RadioButton uans = (RadioButton) 
findViewById(rgp.getCheckedRadioButtonId()); 
      String anstxt = uans.getText().toString(); 

      if (anstxt.equalsIgnoreCase(ans[flag])) { 

       correct++; 

      } else { 

       wrong++; 
      } 

      flag++; 
      if (flag < questions.length) { 

       iv.setImageResource(questions[flag]); 
       rb1.setText(opt[flag * 4]); 
       rb2.setText(opt[(flag * 4) + 1]); 
       rb3.setText(opt[(flag * 4) + 2]); 
       rb4.setText(opt[(flag * 4) + 3]); 
      } 
      else 
      { 

       if (SecondActivity.tbflag) { 

        marks = correct - wrong; 
       } 
       else 
       { 
        marks = correct; 
       } 
       Intent in = new Intent(getApplicationContext(), 
ResultActivity.class); 
       startActivity(in); 
      } 
     } 
    }); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.menu_game, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 

    //noinspection SimplifiableIfStatement 
    if (id == R.id.action_settings) { 
     return true; 
    } 

    return super.onOptionsItemSelected(item); 
} 

}

Logcat

java.lang.OutOfMemoryError: Failed to allocate a 4194316 byte allocation with 3760512 free bytes and 3MB until OOM 
      at dalvik.system.VMRuntime.newNonMovableArray(Native Method) 
      at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) 
      at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:609) 
      at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:444) 
      at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:1080) 
      at android.content.res.Resources.loadDrawableForCookie(Resources.java:2635) 
      at android.content.res.Resources.loadDrawable(Resources.java:2540) 
      at android.content.res.Resources.getDrawable(Resources.java:806) 
      at android.content.Context.getDrawable(Context.java:458) 
      at android.widget.ImageView.resolveUri(ImageView.java:811) 
      at android.widget.ImageView.setImageResource(ImageView.java:418) 
      at com.example.waleedmalik.computerparts.GameActivity.onCreate(GameActivity.java:88) 
      at android.app.Activity.performCreate(Activity.java:6237) 
      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) 
      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
      at android.app.ActivityThread.-wrap11(ActivityThread.java) 
      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
      at android.os.Handler.dispatchMessage(Handler.java:102) 
      at android.os.Looper.loop(Looper.java:148) 
      at android.app.ActivityThread.main(ActivityThread.java:5417) 
      at java.lang.reflect.Method.invoke(Native Method) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

Answer 1

Вы делаете вытяжке массив как это:

int[] draw = {R.drawable.d0 
        R.drawable.d1 
        R.drawable.d2 
        R.drawable.d3 
        R.drawable.d4 
      }; 

По сути, это массив int, а не массив Drawable.

В вашем случае, измените объявление Drawable[] drawables = null; на int[] drawables = null;