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我正在写一个android项目,我写这些代码,我想知道我的代码是否会导致一些内存泄漏。你会看到我在FoldActivity中设置了“OnItemSelectedListener”,然后我在FoldFragment中实现了“ItemSelectedListener”,所以这个片段总是监听这个监听器,我担心当一个片段被替换时,片段是否可以通过检索GC?这种情况会导致内存泄漏吗?
我觉得片段总是有一个来自foldActivity的引用,这会导致gc永远无法检索它,即使它已经被其他片段所取代。
public class FolderActivity extends Activity {
// ...
Spinner spinner;
protected void onCreate(Bundle savedInstanceState) {
// ...
final View spinnerView = inflater.inflater(R.layout.category_spinner, null);
spinner = spinnerView.findViewById(R.id.categorySpinner);
// ...
}
protected void onPostCreate(Bundle savedInstanceState) {
// ...
if (getFragmentManager.findFragmentById(R.id.fragment) == null) {
Fragment folderFragment = new folderFragment();
if (getIntent().hasExtra(EXTRA_DIR)) {
Bundle args = new Bundle();
args.putString(FolderFragment.EXTRA_DIR, getIntent().getStringExtra(EXTRA_DIR));
folderFragment.setArguments(args);
}
}
showFragment(folderFragment);
}
public void showFragment(Fragment fragment) {
spinner.setOnItemSelectedListener((folderFragment)fragment);
getFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.fragment, fragment)
.commit();
}
}
public class FoldFragment extends Fragment implements AdapterView.OnItemSelectedListener {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Log.d(LOG_TAG, "item selected");
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
Log.d(LOG_TAG, "nothing selected");
}
}