. 나는 FragmentStatePagerAdapter를 사용하고 있습니다. 나는 Universal Image Loader v.1.8.4도 사용하고 있습니다. 뷰를 페이징 할 때 힙이 커지고 결국 메모리가 부족합니다. 여기에 약간의 샘플 출력입니다 :FragmentStatePagerAdapter OutOfMemoryError를 내가 일하고 있어요 응용 프로그램에서 OutOfMemoryErrors가 실행 해요 내가 정확히 문제가 무엇인지를 해결하는 방법을 알아내는 데 어려움이있어
이05-06 14:38:23.096: D/dalvikvm(29322): GC_CONCURRENT freed 187K, 5% free 7532K/7868K, paused 7ms+13ms, total 37ms
05-06 14:38:23.176: D/dalvikvm(29322): GC_FOR_ALLOC freed 96K, 4% free 7656K/7920K, paused 17ms, total 17ms
05-06 14:38:23.206: D/dalvikvm(29322): GC_FOR_ALLOC freed <1K, 4% free 8234K/8500K, paused 15ms, total 15ms
05-06 14:38:23.246: D/dalvikvm(29322): GC_CONCURRENT freed 4K, 3% free 8262K/8500K, paused 5ms+5ms, total 31ms
05-06 14:38:23.276: D/dalvikvm(29322): GC_FOR_ALLOC freed 29K, 3% free 8289K/8500K, paused 20ms, total 25ms
05-06 14:38:23.286: D/dalvikvm(29322): GC_FOR_ALLOC freed <1K, 3% free 9342K/9556K, paused 15ms, total 15ms
05-06 14:38:23.316: D/dalvikvm(29322): GC_CONCURRENT freed 27K, 3% free 9327K/9556K, paused 3ms+2ms, total 22ms
05-06 14:38:24.626: D/dalvikvm(29322): GC_FOR_ALLOC freed 83K, 3% free 9462K/9696K, paused 15ms, total 16ms
05-06 14:38:24.646: D/dalvikvm(29322): GC_FOR_ALLOC freed 3K, 3% free 10201K/10440K, paused 16ms, total 16ms
05-06 14:38:24.666: D/dalvikvm(29322): GC_CONCURRENT freed 3K, 3% free 10214K/10440K, paused 3ms+3ms, total 26ms
05-06 14:38:24.976: D/dalvikvm(29322): GC_FOR_ALLOC freed 68K, 3% free 10291K/10508K, paused 16ms, total 17ms
05-06 14:38:24.986: D/dalvikvm(29322): GC_FOR_ALLOC freed <1K, 2% free 11297K/11516K, paused 15ms, total 15ms
05-06 14:38:25.016: D/dalvikvm(29322): GC_CONCURRENT freed 8K, 2% free 11305K/11516K, paused 3ms+4ms, total 24ms
05-06 14:38:25.346: D/dalvikvm(29322): GC_CONCURRENT freed 74K, 2% free 12458K/12680K, paused 2ms+3ms, total 23ms
05-06 14:38:25.976: D/dalvikvm(29322): GC_FOR_ALLOC freed 151K, 3% free 13485K/13792K, paused 22ms, total 22ms
05-06 14:38:26.276: D/dalvikvm(29322): GC_CONCURRENT freed 95K, 2% free 15384K/15636K, paused 3ms+3ms, total 26ms
05-06 14:38:27.196: D/dalvikvm(29322): GC_FOR_ALLOC freed 222K, 3% free 17111K/17484K, paused 24ms, total 24ms
05-06 14:38:28.446: D/dalvikvm(29322): GC_FOR_ALLOC freed 247K, 2% free 19784K/20180K, paused 22ms, total 22ms
05-06 14:38:29.396: D/dalvikvm(29322): GC_FOR_ALLOC freed 248K, 2% free 23137K/23540K, paused 23ms, total 24ms
05-06 14:38:30.976: D/dalvikvm(29322): GC_FOR_ALLOC freed 391K, 2% free 27770K/28308K, paused 29ms, total 29ms
05-06 14:38:33.366: D/dalvikvm(29322): GC_CONCURRENT freed 516K, 2% free 33964K/34628K, paused 3ms+6ms, total 45ms
05-06 14:38:36.126: D/dalvikvm(29322): GC_FOR_ALLOC freed 608K, 2% free 41164K/41920K, paused 37ms, total 37ms
05-06 14:38:38.396: D/dalvikvm(29322): GC_CONCURRENT freed 598K, 2% free 48739K/49484K, paused 4ms+10ms, total 59ms
05-06 14:38:41.496: D/dalvikvm(29322): GC_CONCURRENT freed 723K, 2% free 56176K/57044K, paused 2ms+13ms, total 71ms
05-06 14:38:41.496: D/dalvikvm(29322): WAIT_FOR_CONCURRENT_GC blocked 62ms
05-06 14:38:45.176: I/dalvikvm-heap(29322): Clamp target GC heap from 69.393MB to 64.000MB
05-06 14:38:45.176: D/dalvikvm(29322): GC_FOR_ALLOC freed 597K, 2% free 62724K/63476K, paused 56ms, total 56ms
05-06 14:38:45.936: I/dalvikvm-heap(29322): Clamp target GC heap from 71.379MB to 64.000MB
05-06 14:38:45.936: D/dalvikvm(29322): GC_FOR_ALLOC freed 216K, 1% free 64758K/65412K, paused 50ms, total 50ms
05-06 14:38:45.996: I/dalvikvm-heap(29322): Clamp target GC heap from 71.338MB to 64.000MB
05-06 14:38:45.996: D/dalvikvm(29322): GC_BEFORE_OOM freed 43K, 2% free 64714K/65412K, paused 60ms, total 60ms
05-06 14:38:46.336: I/dalvikvm-heap(29322): Clamp target GC heap from 71.462MB to 64.000MB
05-06 14:38:46.336: D/dalvikvm(29322): GC_FOR_ALLOC freed 139K, 2% free 64841K/65500K, paused 52ms, total 52ms
05-06 14:38:46.396: I/dalvikvm-heap(29322): Clamp target GC heap from 71.462MB to 64.000MB
05-06 14:38:46.396: D/dalvikvm(29322): GC_BEFORE_OOM freed <1K, 2% free 64840K/65500K, paused 62ms, total 62ms
첫째, 그래, 난에 유래와 문제가 무엇인지 알아 내려고 다른 사이트에 파고 많은 일을했습니다. 나는, 비트 맵을 재활용 unbindDrawables를 사용하는 다양한 솔루션을 시도하고 PagerAdapter의() destroyItem에서 비트 맵/뷰를 제거 재활용하려고 ... 몇 가지 이름을했습니다. 이것들 중 어느 것도 나에게 도움이되지 못했다. (필자가 필요하다면 내가 한 일에 대한 자세한 내용을 제공 할 수있다.)
그래서, 간단히 말해서, 나는 (Google 개발자 사이트에서) this example의 수정 된 버전을 사용하여 내 문제를 재현 할 수 있어요. 나는 Universal Image Loader v.1.8.4와 함께 작동하도록 조금 수정하고 또한 내가 일하고 있어요 응용 프로그램이 무엇인지 다소 모방에 좀 더 복잡한 레이아웃을했다. 레이아웃을 변경 한 이유는 레이아웃을 매우 단순하게 만들고 이미지와 일부 텍스트 필드 만 포함하면 모든 것이 잘 작동하는 것처럼 보였기 때문입니다. 레이아웃이 더 복잡 해지면 어댑터에 페이지를 더 추가하기 시작하면 OOM 오류가 발생하기 시작합니다. 그러나, 레이아웃이나 UIL에 문제가 있는지 확실하지 않습니다 ... ...Eclipse에서 MAT를 실행했으며 여기에 유일한 누출 용의자 보고서 (단 1 문제 만 있음)가 나와 있습니다.) : 당신이 다음 도미네이터 트리를 확인하고 ScreenSlidePagerAdapter를 확장하면
One instance of "com.example.android.animationsdemo.ScreenSlideActivity$ScreenSlidePagerAdapter"
loaded by "dalvik.system.PathClassLoader @ 0x42124098" occupies 56,171,048 (86.62%) bytes.
The memory is accumulated in one instance of "java.lang.Object[]" loaded by "<system class loader>".
Keywords
java.lang.Object[]
dalvik.system.PathClassLoader @ 0x42124098
com.example.android.animationsdemo.ScreenSlideActivity$ScreenSlidePagerAdapter
, 다음 25 59의 항목을 보여줍니다 :
> java.util.ArrayList @ 0x4216ccf0
> java.lang.Object[60] @ 0x44b07d8
> android.app.Fragment$SavedState @ 0x439bd038
이 도구로 어떤 전문가는 아니지만 내가 ' 꽤 안드로이드와 개발에 일반적으로 새롭지 만, 어댑터의 저장된 상태가 아닌 것처럼 보입니다. 올바르게 제거되면 OOM 문제의 원인이됩니다. 비트 맵이 아닌 전체보기가 저장됩니다. 그러나, 나는 내가 다른 곳에서 뭔가를 잘못하고 있어요 경우/해제/파괴/어떤 저장된 상태 데이터를 지우거나하는 방법을 알아낼 수 없었다. 내가 .setSaveEnabled(false)
를 사용하여 시도했다 하나 개의 포스트로 실행 않았지만, 그 차이를하지 않았다, 난 여전히 OOM 오류를 얻었다. 나도 어댑터에 대한 saveState() 무시하고 null을 반환 시도하고 그 중 하나를 만들지 않았다.
여기서 잘하면 대부분의 질문에 대답해야 관련 코드/설정 정보의 :
imageLoader.init(ImageLoaderConfiguration.createDefault(this));
: 변화는 변화를 보이지 않았기 때문에, 난 그냥 기본 설정을 사용하고 UIL 들어
은
ScreenSlideActivity :
public class ScreenSlideActivity extends FragmentActivity {
/**
* The number of pages (wizard steps) to show in this demo.
*/
private static final String[] IMAGES = Constants.IMAGES;
/**
* The pager widget, which handles animation and allows swiping horizontally to access previous
* and next wizard steps.
*/
private ViewPager mPager;
/**
* The pager adapter, which provides the pages to the view pager widget.
*/
private PagerAdapter mPagerAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_screen_slide);
// Instantiate a ViewPager and a PagerAdapter.
mPager = (ViewPager) findViewById(R.id.pager);
mPagerAdapter = new ScreenSlidePagerAdapter(getFragmentManager(), IMAGES);
mPager.setSaveEnabled(false); // <--- THIS DOESN'T APPEAR TO MAKE ANY DIFFERENCE
mPager.setAdapter(mPagerAdapter);
mPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
// When changing pages, reset the action bar actions since they are dependent
// on which page is currently active. An alternative approach is to have each
// fragment expose actions itself (rather than the activity exposing actions),
// but for simplicity, the activity provides the actions in this sample.
invalidateOptionsMenu();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.activity_screen_slide, menu);
menu.findItem(R.id.action_previous).setEnabled(mPager.getCurrentItem() > 0);
// Add either a "next" or "finish" button to the action bar, depending on which page
// is currently selected.
MenuItem item = menu.add(Menu.NONE, R.id.action_next, Menu.NONE,
(mPager.getCurrentItem() == mPagerAdapter.getCount() - 1)
? R.string.action_finish
: R.string.action_next);
item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
// Navigate "up" the demo structure to the launchpad activity.
// See http://developer.android.com/design/patterns/navigation.html for more.
NavUtils.navigateUpTo(this, new Intent(this, MainActivity.class));
return true;
case R.id.action_previous:
// Go to the previous step in the wizard. If there is no previous step,
// setCurrentItem will do nothing.
mPager.setCurrentItem(mPager.getCurrentItem() - 1);
return true;
case R.id.action_next:
// Advance to the next step in the wizard. If there is no next step, setCurrentItem
// will do nothing.
mPager.setCurrentItem(mPager.getCurrentItem() + 1);
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A simple pager adapter that represents 5 {@link ScreenSlidePageFragment} objects, in
* sequence.
*/
private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
String[] mImages;
public ScreenSlidePagerAdapter(FragmentManager fm, String[] images) {
super(fm);
this.mImages = images;
}
@Override
public Fragment getItem(int position) {
return ScreenSlidePageFragment.create(position, mImages);
}
@Override
public int getCount() {
return IMAGES.length;
}
}
}
ScreenSlidePageFragment, 위의 활동에 의해 호출 :
ViewPager에 대한 ScreenSlideActivity 및 ID로 사용 617,451,515,public class ScreenSlidePageFragment extends Fragment {
// Universal Image Loader
private DisplayImageOptions mOptions;
protected ImageLoader mImageLoader = ImageLoader.getInstance();
/**
* The argument key for the page number this fragment represents.
*/
public static final String ARG_PAGE = "page";
public static final String ARG_IMAGES = "images";
/**
* The fragment's page number, which is set to the argument value for {@link #ARG_PAGE}.
*/
private int mPageNumber;
private String[] mImages;
/**
* Factory method for this fragment class. Constructs a new fragment for the given page number.
*/
public static ScreenSlidePageFragment create(int pageNumber, String[] images) {
ScreenSlidePageFragment fragment = new ScreenSlidePageFragment();
Bundle args = new Bundle();
args.putInt(ARG_PAGE, pageNumber);
args.putStringArray(ARG_IMAGES, images);
fragment.setArguments(args);
return fragment;
}
public ScreenSlidePageFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPageNumber = getArguments().getInt(ARG_PAGE);
mImages = getArguments().getStringArray(ARG_IMAGES);
mOptions = new DisplayImageOptions.Builder()
.showImageForEmptyUri(R.drawable.ic_empty)
.showImageOnFail(R.drawable.ic_error)
.resetViewBeforeLoading()
.cacheOnDisc()
.imageScaleType(ImageScaleType.EXACTLY)
.bitmapConfig(Bitmap.Config.RGB_565)
.displayer(new SimpleBitmapDisplayer())
.build();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout containing a title and body text.
ViewGroup rootView = (ViewGroup) inflater
.inflate(R.layout.fragment_screen_slide_page, container, false);
// Set the title view to show the page number.
((TextView) rootView.findViewById(android.R.id.text1)).setText(
getString(R.string.title_template_step, mPageNumber + 1));
displayImageFile(rootView);
return rootView;
}
private void displayImageFile (ViewGroup view) {
ImageView imageView = (ImageView) view.findViewById(R.id.item_image_to_display);
mImageLoader.displayImage(mImages[mPageNumber], imageView, mOptions);
}
/**
* Returns the page number represented by this fragment object.
*/
public int getPageNumber() {
return mPageNumber;
}
}
레이아웃 activity_screen_slide.xml :
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
fragment_screen_slide_page.ScreenSlidePageFragment에서 사용하는 XML :
05-06 16:37:59.656: E/ImageLoader(3175): null
05-06 16:37:59.656: E/ImageLoader(3175): java.lang.OutOfMemoryError
05-06 16:37:59.656: E/ImageLoader(3175): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
05-06 16:37:59.656: E/ImageLoader(3175): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:529)
05-06 16:37:59.656: E/ImageLoader(3175): at com.nostra13.universalimageloader.core.ImageDecoder.decode(ImageDecoder.java:82)
05-06 16:37:59.656: E/ImageLoader(3175): at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.decodeImage(LoadAndDisplayImageTask.java:270)
05-06 16:37:59.656: E/ImageLoader(3175): at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.tryLoadBitmap(LoadAndDisplayImageTask.java:224)
05-06 16:37:59.656: E/ImageLoader(3175): at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.run(LoadAndDisplayImageTask.java:149)
05-06 16:37:59.656: E/ImageLoader(3175): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
05-06 16:37:59.656: E/ImageLoader(3175): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
05-06 16:37:59.656: E/ImageLoader(3175): at java.lang.Thread.run(Thread.java:856)
나는 순서/변경에서 무엇을 볼 수는 OOM 오류를 제거하는 :
또한<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- Dummy content. -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp" >
<TextView
android:id="@android:id/text1"
style="?android:textAppearanceLarge"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:textStyle="bold" />
<TextView
style="?android:textAppearanceMedium"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:lineSpacingMultiplier="1.2"
android:text="@string/lorem_ipsum" />
<TextView
android:id="@+id/item_details"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:gravity="center_vertical"
android:text="@string/item_details" />
<TextView
android:id="@+id/item_type_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_type_text" />
<Spinner
android:id="@+id/item_type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:prompt="@string/item_type_text"
android:text="@string/item_type" />
<TextView
android:id="@+id/item_name_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_name_text" />
<EditText
android:id="@+id/item_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:gravity="top|left"
android:hint="@string/item_name"
android:inputType="text" />
<TextView
android:id="@+id/item_text_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_text_text" />
<EditText
android:id="@+id/item_text"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:layout_marginLeft="10dp"
android:ems="10"
android:gravity="top|left"
android:hint="@string/item_text"
android:inputType="textMultiLine" />
<TextView
android:id="@+id/sound_edit_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:gravity="center_vertical"
android:text="@string/sound_edit" />
<ImageView
android:id="@+id/item_add_audio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:contentDescription="@string/cd_image_add_button"
android:src="@android:drawable/ic_menu_add" />
<TextView
android:id="@+id/recording_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="20dp"
android:layout_marginTop="20dp"
android:text="@string/recording_text" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="16dp" >
<ImageButton
android:id="@+id/item_play_audio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="33"
android:contentDescription="@string/cd_play_sound_button"
android:soundEffectsEnabled="false"
android:src="@drawable/play" />
<ImageButton
android:id="@+id/item_stop_audio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="34"
android:contentDescription="@string/cd_stop_sound_button"
android:soundEffectsEnabled="false"
android:src="@drawable/stop" />
<ImageButton
android:id="@+id/item_record_audio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="33"
android:contentDescription="@string/cd_record_sound_button"
android:soundEffectsEnabled="false"
android:src="@drawable/rec" />
</LinearLayout>
<TextView
android:id="@+id/edit_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:gravity="center_vertical"
android:text="@string/edit_image" />
<TextView
android:id="@+id/image_replace_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:text="@string/image_replace"
android:visibility="visible" />
<ImageView
android:id="@+id/item_image_to_display"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:contentDescription="@string/cd_item_image" />
<TextView
android:id="@+id/item_image_effect_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_image_effect_text" />
<Spinner
android:id="@+id/item_image_effect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp" />
<TextView
android:id="@+id/item_text_color_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_text_color_text" />
<Spinner
android:id="@+id/item_text_color"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp" />
<TextView
android:id="@+id/item_text_size_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_text_size_text" />
<EditText
android:id="@+id/item_text_size"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:hint="@string/item_text_size"
android:inputType="number" />
<TextView
android:id="@+id/item_text_style_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_text_style_text" />
<Spinner
android:id="@+id/item_text_style"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp" />
<TextView
android:id="@+id/item_text_alignment_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_text_alignment_text" />
<Spinner
android:id="@+id/item_text_alignment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp" />
<TextView
android:id="@+id/item_background_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="@string/item_background_text" />
<Spinner
android:id="@+id/item_background"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp" />
</LinearLayout>
</ScrollView>
, 나는 여기에 실행 OOM 오류가있어?
마지막으로, 비슷한 해결책을 찾고 있습니다. 건배 –
내 경우에 unbindDrawables() 메서드가 Null 포인터 예외를주는 이유는 무엇입니까? –
@SalmanKhan, 아마도 null보기를 전달하기 때문일 수 있습니다. 모든보기/변수가 올바르게 설정되었는지 확인하십시오. 코드 예제가 없다면 아무도 정말로 당신을 도울 수 없습니다. 이 경우 도움을 얻기 위해 코드를 질문으로 게시하는 것이 가장 좋습니다. – Jason