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adapter - getView() 메소드를 사용하여 sdcard0에서 모든 이미지를 검색하려고합니다. 갤러리 뷰를 채우려고하는데, 요구 사항 문서는 갤러리 뷰를 사용한다는 것을 암시합니다. 내가 볼 수 있듯이 이미지가 거의 없다면이 접근법은 작동하지만 sdcard0에 10 개 이상의 이미지가있는 경우 OutOfMemoryException이 발생합니다. 누군가가 내가 파일에서 읽고 난 메모리가 부족 해요 비트 맵 객체를 많이 만드는거야 때문에BitmapFactory는 sdcard0에서 모든 이미지를 읽을 때 OutOfMemoryError를 표시합니다.
"Bitmap bitmap = ThumbnailUtils.extractThumbnail(BitmapFactory.decodeFile((file.getPath())), 275, 210);".
을 만드는거야 비트 맵 객체의 메모리를 재사용하는 데 도움이 있습니다. 이미지는 모두 jpg 형식이며 장치 카메라를 사용하여 클릭하고 3.5MB의 평균 크기입니다. 그것의 삼성 갤럭시 S4는 내가 테스트 중이 야.
Button btnFetch;
ImageView ivLoad;
Gallery galView;
MyAdapter adapter;
static Context context;
File[] files;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sdcard);
context = SDCardActivity.this;
btnFetch = (Button) findViewById(R.id.btnFetch);
ivLoad = (ImageView) findViewById(R.id.ivLoad);
galView = (Gallery) findViewById(R.id.galView);
loadingMyGalleryView();
adapter = new MyAdapter();
galView.setAdapter(adapter);
galView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
File file = files[position];
Bitmap bm = BitmapFactory.decodeFile(file.getPath());
ivLoad.setImageBitmap(bm);
}
});
}
private void loadingMyGalleryView() {
if (android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED)) {
// It have to be matched with the directory in SDCard
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + "DCIM/Camera");
boolean exist = f.exists();
Log.d("loki", "Reached Line 80" + exist);
if (exist) {
Log.d("loki", "Reached line 82");
files = f.listFiles();
for (int i = 0; i < files.length; i++) {
Log.d("loki", "" + files[i]);
}
}
}
}
class MyAdapter extends BaseAdapter {
@Override
public Object getItem(int position) {
return files[position];
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getCount() {
// Log.d("loki", ""+files.length);
return files.length;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView image = new ImageView(context);
File file = files[position];
Bitmap bitmap = ThumbnailUtils.extractThumbnail(BitmapFactory.decodeFile((file.getPath())), 275, 210);
image.setImageBitmap(bitmap);
image.setAdjustViewBounds(true);
image.setScaleType(ImageView.ScaleType.FIT_CENTER);
return image;
}
}
로그 캣을 보여줍니다 : 올바르게 convertView을 처리하지 않는 때문에 각 행에 대해 (당신이 여기 아무것도하지 않는 사실 경우) 기존 재사용하는 대신 새로운 뷰를 생성
08-10 12:15:38.403: E/AndroidRuntime(21585): FATAL EXCEPTION: main
08-10 12:15:38.403: E/AndroidRuntime(21585): java.lang.OutOfMemoryError
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:529)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:302)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:328)
08-10 12:15:38.403: E/AndroidRuntime(21585): at com.example.sdcard.SDCardActivity$MyAdapter.getView(SDCardActivity.java:140)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:193)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.View.measure(View.java:15518)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:681)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.View.measure(View.java:15518)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.View.measure(View.java:15518)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.View.measure(View.java:15518)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
08-10 12:15:38.403: E/AndroidRuntime(21585): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2313)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.View.measure(View.java:15518)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.Choreographer.doFrame(Choreographer.java:532)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.os.Handler.handleCallback(Handler.java:725)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.os.Handler.dispatchMessage(Handler.java:92)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.os.Looper.loop(Looper.java:137)
08-10 12:15:38.403: E/AndroidRuntime(21585): at android.app.ActivityThread.main(ActivityThread.java:5195)
08-10 12:15:38.403: E/AndroidRuntime(21585): at java.lang.reflect.Method.invokeNative(Native Method)
08-10 12:15:38.403: E/AndroidRuntime(21585): at java.lang.reflect.Method.invoke(Method.java:511)
08-10 12:15:38.403: E/AndroidRuntime(21585): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
08-10 12:15:38.403: E/AndroidRuntime(21585): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
08-10 12:15:38.403: E/AndroidRuntime(21585): at dalvik.system.NativeStart.main(Native Method)