我正在开发一个在 ViewPager 中显示 12 个视图的游戏本应用程序。这是我的自定义 PagerAdapter ：
private class ImagePagerAdapter extends PagerAdapter {
private int[] mImages = new int[] { R.drawable.copertinai,
R.drawable.blui, R.drawable.azzurroi, R.drawable.rossoi,
R.drawable.gialloi, R.drawable.verdei, R.drawable.rosai,
R.drawable.grigioi, R.drawable.neroi, R.drawable.arancionei,
R.drawable.marronei, R.drawable.violai, R.drawable.ulm };
@Override
public int getCount() {
return mImages.length;
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((RelativeLayout) object);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
Context context = MainActivity.this;
RelativeLayout relLayImageView = new RelativeLayout(context);
relLayImageView.setBackgroundResource(mImages[position]);
((ViewPager) container).addView(relLayImageView, new LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
return relLayImageView;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
((ViewPager) container).removeView((RelativeLayout) object);
object=null;
System.gc();
}
}
在某些设备中，当调用这行代码时，它会随机导致内存不足异常
relLayImageView.setBackgroundResource(mImages[position]);
但是在所有设备中，当我翻页时，我会在 logcat 中看到类似的内容：
12-31 00:25:31.655: I/dalvikvm-heap(9767): Grow heap (frag case) to 50.875MB for 10384016-byte allocation
当在另一个 Activity 中我根据用户操作为主布局设置不同的背景资源时，该应用程序也会在某些设备中因同样的问题而崩溃。这里的代码：
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
colorButtons.get(indiceColoreAttuale).setBackgroundResource(
unSelectedColorsRes[indiceColoreAttuale]);
switch (index) {
case 0:
mainLayout.setBackgroundResource(R.drawable.blus);
break;
case 1:
mainLayout
.setBackgroundResource(R.drawable.azzurros);
break;
case 2:
mainLayout
.setBackgroundResource(R.drawable.rossos);
break;
case 3:
mainLayout
.setBackgroundResource(R.drawable.giallos);
break;
case 4:
mainLayout
.setBackgroundResource(R.drawable.verdes);
break;
case 5:
mainLayout
.setBackgroundResource(R.drawable.rosas);
break;
case 6:
mainLayout
.setBackgroundResource(R.drawable.grigios);
break;
case 7:
mainLayout
.setBackgroundResource(R.drawable.neros);
break;
case 8:
mainLayout
.setBackgroundResource(R.drawable.arancios);
break;
case 9:
mainLayout
.setBackgroundResource(R.drawable.marrones);
break;
case 10:
mainLayout
.setBackgroundResource(R.drawable.violas);
break;
}
mainLayout.startAnimation(animationShowTextColor);
mainLayout.setGravity(Gravity.CENTER_HORIZONTAL);
indiceColoreAttuale = index;
colorButtons.get(index).setBackgroundResource(
selectedColorsRes[index]);
}
});
当我在 mainLayout 上调用 setBackgroundResource() 时，它再次运行异常。
我希望你能帮助我解决这个问题，在此先感谢！