使用MAT测试此类内存问题，我发现根据该工具，内部类ViewHolder中有16个对象，但是我真的不明白问题出在哪里。
有人可以帮我吗？
public class InEnglishPlacesDataListCursorAdapter extends SimpleCursorAdapter implements OnClickListener{
private ListPlacesFragment activity;
private SearchPlaceResultListFragment searchPlaceResultListFragment;
private BitmapTask imgFetcher;
private Context context;
private int layout;
private Cursor cursor;
private double current_latitude;
private double current_longtitude;
private String button_pressed;
private Boolean imagessavedFlag;
private Bitmap bitmap;
private String fontcolor="";
private Bitmap bit;
GPSTracker gps;
ArrayList<PlacesData> placesDataArray = new ArrayList<PlacesData>();
public InEnglishPlacesDataListCursorAdapter(String button_pressed, SearchPlaceResultListFragment searchPlaceResultListFragment, Context context, int layout, Cursor cursor, String[] from, int[] to, double current_latitude, double current_longtitude, boolean imagessavedFlag, String fontcolor) {
super(context, layout, cursor, from, to);
this.button_pressed = button_pressed;
this.searchPlaceResultListFragment = searchPlaceResultListFragment;
this.context = context.getApplicationContext();
this.layout = layout;
this.cursor = cursor;
//this.imgFetcher = i;
this.current_latitude = current_latitude;
this.current_longtitude = current_longtitude;
this.imagessavedFlag = imagessavedFlag;
this.fontcolor = fontcolor;
// TODO Auto-generated constructor stub
}
public InEnglishPlacesDataListCursorAdapter(String button_pressed, ListPlacesFragment activity, Context context, int layout, Cursor cursor, String[] from, int[] to, double current_latitude, double current_longtitude, boolean imagessavedFlag) {
super(context, layout, cursor, from, to);
this.button_pressed = button_pressed;
this.activity = activity;
this.context = context;
this.layout = layout;
this.cursor = cursor;
//this.imgFetcher = i;
this.current_latitude = current_latitude;
this.current_longtitude = current_longtitude;
this.imagessavedFlag = imagessavedFlag;
// TODO Auto-generated constructor stub
}
private class ViewHolder{
TextView nametv, placeNametv, distance, latitudetv, longtitudetv, desc_infohiddentv, menuhiddentv,
telhiddentv, linkhiddentv, fbLinkhiddentv, emailhiddentv, exhibitionhiddentv,
photoLink1hiddentv, photoLink2hiddentv, photoLink3hiddentv, photoLink4hiddentv;
ImageView icon;
Button infoButton;
ViewHolder(View v){
desc_infohiddentv = (TextView) v.findViewById(R.id.descinfohiddentv);
menuhiddentv = (TextView) v.findViewById(R.id.menuhiddentv);
telhiddentv = (TextView) v.findViewById(R.id.telhiddentv);
linkhiddentv = (TextView) v.findViewById(R.id.linkhiddentv);
fbLinkhiddentv = (TextView) v.findViewById(R.id.fbLinkhiddentv);
emailhiddentv = (TextView) v.findViewById(R.id.emailhiddentv);
exhibitionhiddentv = (TextView) v.findViewById(R.id.exhibitionhiddentv);
photoLink1hiddentv = (TextView) v.findViewById(R.id.photoLink1hiddentv);
photoLink2hiddentv = (TextView) v.findViewById(R.id.photoLink2hiddentv);
photoLink3hiddentv = (TextView) v.findViewById(R.id.photoLink3hiddentv);
photoLink4hiddentv = (TextView) v.findViewById(R.id.photoLink4hiddentv);
nametv = (TextView) v.findViewById(R.id.locationName);
placeNametv = (TextView) v.findViewById(R.id.placeNametv);
latitudetv = (TextView) v.findViewById(R.id.latitudetv);
longtitudetv = (TextView) v.findViewById(R.id.longtitudetv);
distance = (TextView) v.findViewById(R.id.distance);
icon = (ImageView) v.findViewById(R.id.locationImage);
infoButton = (Button) v.findViewById(R.id.info_button);
}
}
public View getView(int pos, View inView, ViewGroup parent){
ConnectivityManager cm = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo ni = cm.getActiveNetworkInfo();
//imgFetcher = new BitmapTask(context.getApplicationContext());
View v = inView;
ViewHolder viewHolder = null;
if (v == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.places_basic_layout, parent, false);
viewHolder = new ViewHolder(v);
viewHolder.infoButton.setTag(viewHolder);
v.setTag(viewHolder);
}
else{
viewHolder = (ViewHolder) v.getTag();
}
this.cursor.moveToPosition(pos);
String name = this.cursor.getString(this.cursor.getColumnIndex("_id"));
int integer_id = Integer.parseInt(name);
String placeNameEl = this.cursor.getString(this.cursor.getColumnIndex("name_en"));
String image_link = this.cursor.getString(this.cursor.getColumnIndex("photo_link"));
double place_latitude = this.cursor.getDouble(this.cursor.getColumnIndex("latitude"));
String str_placelatitude = Double.toString(place_latitude);
double place_longtitude = this.cursor.getDouble(this.cursor.getColumnIndex("longtitude"));
String str_placelongtitude = Double.toString(place_longtitude);
String descInfo = this.cursor.getString(this.cursor.getColumnIndex("info_en"));
String tel = this.cursor.getString(this.cursor.getColumnIndex("tel"));
String link = this.cursor.getString(this.cursor.getColumnIndex("link"));
String fbLink = this.cursor.getString(this.cursor.getColumnIndex("fb_link"));
String email = this.cursor.getString(this.cursor.getColumnIndex("email"));
String exhibition = this.cursor.getString(this.cursor.getColumnIndex("exhibition_en"));
String menu = this.cursor.getString(this.cursor.getColumnIndex("menu_en"));
String link1 = this.cursor.getString(this.cursor.getColumnIndex("link1"));
String link2 = this.cursor.getString(this.cursor.getColumnIndex("link2"));
String link3 = this.cursor.getString(this.cursor.getColumnIndex("link3"));
String link4 = this.cursor.getString(this.cursor.getColumnIndex("link4"));
double apostasi = GPSTracker.getDistance(this.current_latitude, this.current_longtitude, place_latitude, place_longtitude);
double distanceInKm = apostasi/1000;
DecimalFormat df = new DecimalFormat("#.##");
String dx=df.format(distanceInKm);
viewHolder.nametv.setText(name);
viewHolder.desc_infohiddentv.setText(descInfo);
viewHolder.menuhiddentv.setText(menu);
viewHolder.telhiddentv.setText(tel);
viewHolder.linkhiddentv.setText(link);
viewHolder.fbLinkhiddentv.setText(fbLink);
viewHolder.emailhiddentv.setText(email);
viewHolder.exhibitionhiddentv.setText(exhibition);
viewHolder.photoLink1hiddentv.setText(link1);
viewHolder.photoLink2hiddentv.setText(link2);
viewHolder.photoLink3hiddentv.setText(link3);
viewHolder.photoLink4hiddentv.setText(link4);
viewHolder.placeNametv.setText(placeNameEl);
if (fontcolor.equals("black")){
viewHolder.placeNametv.setText(placeNameEl);
viewHolder.distance.setText(dx + " km");
viewHolder.distance.setTextColor(Color.BLACK);
viewHolder.distance.setTypeface(null, Typeface.BOLD);
viewHolder.placeNametv.setTextColor(Color.BLACK);
viewHolder.placeNametv.setTypeface(null, Typeface.BOLD);
}
else{
viewHolder.placeNametv.setText(placeNameEl);
viewHolder.distance.setText(dx + " km");
}
//viewHolder.surnametv.setTag(surname);
viewHolder.latitudetv.setText(str_placelatitude);
viewHolder.longtitudetv.setText(str_placelongtitude);
viewHolder.infoButton.setOnClickListener(this);
return v;
}
![][1]
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//TextView surnametv = (TextView) v.findViewById(R.id.nameEl);
//Button pressed = (Button) v;
//String button_pressed_text = pressed.getText().toString();
Log.i("Button pressed text =>", " " + button_pressed);
ViewHolder vH = (ViewHolder) v.getTag();
//String url = (String) vH.surnametv.getTag();
//Toast.makeText(this.context, url, Toast.LENGTH_SHORT).show();
Intent intent = new Intent(context.getApplicationContext(), PlacesDetailsTabs.class);
//Intent intent = new Intent(this.activity, PlacesListFragmentActivityTest.class);
//intent.putExtra("nameEl", vH.surnametv.getTag().toString());
String str_current_latitude = Double.toString(current_latitude);
String str_current_longtitude = Double.toString(current_longtitude);
intent.putExtra("language", "English");
intent.putExtra("current latitude" , str_current_latitude);
intent.putExtra("current longtitude", str_current_longtitude);
intent.putExtra("placeNameEl", vH.placeNametv.getText());
intent.putExtra("desc_info", vH.desc_infohiddentv.getText());
intent.putExtra("menu", vH.menuhiddentv.getText());
intent.putExtra("telephone", vH.telhiddentv.getText());
intent.putExtra("link", vH.linkhiddentv.getText());
intent.putExtra("fbLink", vH.fbLinkhiddentv.getText());
intent.putExtra("email", vH.emailhiddentv.getText());
intent.putExtra("exhibition", vH.exhibitionhiddentv.getText());
intent.putExtra("photoLink1", vH.photoLink1hiddentv.getText());
intent.putExtra("photoLink2", vH.photoLink2hiddentv.getText());
intent.putExtra("photoLink3", vH.photoLink3hiddentv.getText());
intent.putExtra("photoLink4", vH.photoLink4hiddentv.getText());
intent.putExtra("latitude", vH.latitudetv.getText());
intent.putExtra("longtitude", vH.longtitudetv.getText());
intent.putExtra("button_pressed_text", button_pressed);
intent.putExtra("displaycurrentPoint", "yes");
//Toast.makeText(this.context, vH.photoLink1hiddentv.getText(), Toast.LENGTH_SHORT).show();
//intent.putExtra("latitude", this.c.getDouble(this.c.getColumnIndex("latitude")));
//intent.putExtra("longtitude", this.c.getDouble(this.c.getColumnIndex("longtitude")));
if (this.activity == null){
this.searchPlaceResultListFragment.startActivity(intent);
}else{
this.activity.startActivity(intent);
}
}
}
最佳答案
使ViewHolder类成为静态内部类。
只需添加
static class ViewHolder{}
这避免了viewHolder的多个对象形成。
遵循本教程，将帮助您更好地了解列表视图https://www.youtube.com/watch?v=wDBM6wVEO70
关于android - listview viewHolder泄漏内存android，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/26388363/