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我正在使用GridView和universalimageloader（1.8.6），似乎遇到内存泄漏 - 虽然也许我误解了DDMS和MAT结果？这是我没有写的代码，但它非常基础 - 我们展示了许多照片，并允许用户选择他们想要的数量，然后存储这些照片以供将来参考。该代码似乎工作正常，但在MAT“泄漏可疑”从下面的GridView不断显示，每次咀嚼高达5 MB，即使我已经在Activity上调用finish（）。从我读过的内容来看，Android可以将Activity保留在内存中，直到它释放它（并且已经在其他活动中看到了这一点），但它似乎从未想要释放这个 - 即使当我强制GC时。 “新线程”分配看起来有点可疑，但不会被调用活动取消分配？内存泄漏和GridView
也许只是缺少明显的东西，但这里是代码：
public class PhotoGalleryPickerActivity extends MyActivity {
private Boolean mMultiple = false;
GridView gridGallery;
Handler handler;
GalleryAdapter adapter;
ImageView imgNoMedia;
Button btnGalleryOk;
String action;
private ImageLoader imageLoader;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_photo_gallery_picker);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setTitle("Photo Gallery Capture");
Bundle extras = getIntent().getExtras();
mMultiple = extras.getBoolean("multiple");
initImageLoader();
init();
}
private void initImageLoader() {
try {
String CACHE_DIR = Environment.getExternalStorageDirectory().getAbsolutePath() + "/.temp_tmp";
new File(CACHE_DIR).mkdirs();
File cacheDir = StorageUtils.getOwnCacheDirectory(getBaseContext(), CACHE_DIR);
DisplayImageOptions defaultOptions = new DisplayImageOptions.Builder()
.cacheOnDisc(true).imageScaleType(ImageScaleType.EXACTLY)
.bitmapConfig(Bitmap.Config.RGB_565).build();
ImageLoaderConfiguration.Builder builder = new ImageLoaderConfiguration.Builder(
getBaseContext())
.defaultDisplayImageOptions(defaultOptions)
.discCache(new UnlimitedDiscCache(cacheDir))
.memoryCache(new WeakMemoryCache());
ImageLoaderConfiguration config = builder.build();
imageLoader = ImageLoader.getInstance();
imageLoader.init(config);
} catch (Exception e) {
Utilities.logException(e);
}
}
private void init() {
handler = new Handler();
gridGallery = (GridView) findViewById(R.id.gridGallery);
gridGallery.setFastScrollEnabled(true);
adapter = new GalleryAdapter(getApplicationContext(), imageLoader);
PauseOnScrollListener listener = new PauseOnScrollListener(imageLoader, true, true);
gridGallery.setOnScrollListener(listener);
if (mMultiple == true){
findViewById(R.id.llBottomContainer).setVisibility(View.VISIBLE);
gridGallery.setOnItemClickListener(mItemMulClickListener);
adapter.setMultiplePick(true);
}
else {
findViewById(R.id.llBottomContainer).setVisibility(View.GONE);
gridGallery.setOnItemClickListener(mItemSingleClickListener);
adapter.setMultiplePick(false);
}
gridGallery.setAdapter(adapter);
imgNoMedia = (ImageView) findViewById(R.id.imgNoMedia);
btnGalleryOk = (Button) findViewById(R.id.btnGalleryOk);
btnGalleryOk.setOnClickListener(mOkClickListener);
new Thread() {
@Override
public void run() {
Looper.prepare();
handler.post(new Runnable() {
@Override
public void run() {
adapter.addAll(getGalleryPhotos());
checkImageStatus();
}
});
Looper.loop();
};
}.start();
}
private void checkImageStatus() {
if (adapter.isEmpty()) {
imgNoMedia.setVisibility(View.VISIBLE);
} else {
imgNoMedia.setVisibility(View.GONE);
}
}
View.OnClickListener mOkClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
ArrayList<CustomGallery> selected = adapter.getSelected();
String[] photos = new String[selected.size()];
for (int i = 0; i < photos.length; i++) {
photos[i] = selected.get(i).sdcardPath;
}
Intent data = new Intent().putExtra("photos", photos);
if(photos.length == 0) {
data = null;
}
setResult(RESULT_OK, data);
finish();
}
};
AdapterView.OnItemClickListener mItemMulClickListener = new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> l, View v, int position, long id) {
adapter.changeSelection(v, position);
}
};
AdapterView.OnItemClickListener mItemSingleClickListener = new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> l, View v, int position, long id) {
CustomGallery item = adapter.getItem(position);
String[] photos = new String[1];
photos[0] = item.sdcardPath;
Intent data = new Intent().putExtra("photos", photos);
setResult(RESULT_OK, data);
finish();
}
};
private ArrayList<CustomGallery> getGalleryPhotos() {
ArrayList<CustomGallery> galleryList = new ArrayList<CustomGallery>();
try {
String[] dirs = new String[1];
final String where = MediaStore.Images.Media.DATA + " not like ? ";
String mediaDir = GlobalState.getInstance().currentForm.mediaDirectory();
if (mediaDir != null) {
int slash = mediaDir.lastIndexOf("/");
dirs[0] = mediaDir.substring(0, slash) + "%";
}
final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
final String orderBy = MediaStore.Images.Media._ID;
Cursor imagecursor = null;
try {
if (mediaDir != null && mediaDir.trim().length() > 0) {
imagecursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, where, dirs, orderBy);
}
else {
imagecursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
}
if (imagecursor != null && imagecursor.getCount() > 0) {
while (imagecursor.moveToNext()) {
CustomGallery item = new CustomGallery();
int dataColumnIndex = imagecursor
.getColumnIndex(MediaStore.Images.Media.DATA);
item.sdcardPath = imagecursor.getString(dataColumnIndex);
galleryList.add(item);
}
}
}
catch (Exception ex) {
Utilities.logException(ex);
Utilities.logError("PhotoGalleryPickerActivity", "getGalleryPhotos : " + ex.getMessage());
}
finally {
if (imagecursor != null) {
imagecursor.close();
}
}
} catch (Exception e) {
Utilities.logException(e);
e.printStackTrace();
}
// show newest photo at beginning of the list
Collections.reverse(galleryList);
return galleryList;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
PhotoGalleryPickerActivity.this.finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
的MAT结果，从Eclipse中运行，这个样子。它显示了所有我对这个活动提出的各种电话，仿佛他们没有实际已发布：
该应用程序的正常内存周围11-15mb挂起，但你可以看到它现在约为50MB，并且每次我打电话时都会增长。如果所有的犯罪嫌疑人的记忆被回收，我想我会是正确的，我应该是：
最后，可这是在Eclipse运行到远程设备的结果呢？我看到与另一个控件类似的东西，无法复制。而我绝对能够复制这一点。
谢谢！