I have RecyclerView and it has Pagination, When I scroll some times it is being crashed. When I scroll slowly it is not being crashed. I have provided Adapter and Activity code. Please let me know any mistake here I did. I have searched for same issues , but I am not able to catch error here.
private class GetTrending extends AsyncTask<Void, Void, Void> {
BufferedReader bufferedReader = null;
private StringBuffer stringBuffer = new StringBuffer();
private JSONArray jArray = new JSONArray();
private int pageNum;
private boolean value;
public GetTrending(int pageNum, boolean value) {
this.pageNum = pageNum;
this.value = value;
}
@Override
protected Void doInBackground(Void... params) {
try {
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet();
URI uri = new URI(getString(R.string.url) +
"products?bestsellers=on&items_per_page=24&page=" + pageNum + mWholeSaleUrlTag);
httpGet.setURI(uri);
httpGet.addHeader(BasicScheme.authenticate(
new UsernamePasswordCredentials(getString(R.string.username), getString(R.string.password)),
HTTP.UTF_8, false));
HttpResponse httpResponse;
Log.e("Trending-Before", "Date" + new SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new Date()));
httpResponse = httpClient.execute(httpGet);
Log.e("Trending-After", "New Date" + new SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new Date()));
InputStream inputStream = httpResponse.getEntity().getContent();
bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
//Log.e("Hi", String.valueOf(bufferedReader));
String readLine = bufferedReader.readLine();
while (readLine != null) {
stringBuffer.append(readLine);
//stringBuffer.append("\n");
readLine = bufferedReader.readLine();
}
//Log.e("BestSellers", String.valueOf(stringBuffer));
} catch (IOException e) {
e.printStackTrace();
} catch (URISyntaxException e) {
e.printStackTrace();
}
try {
JSONObject prodObjects = new JSONObject(String.valueOf(stringBuffer));
jArray = prodObjects.optJSONArray("products");
if (jArray.length() < 24) {
shouldFetchTrending = false;
}
for (int i = 0; i < jArray.length(); i++) {
Home home = new Home();
prodObjects = jArray.getJSONObject(i);
home.setProduct_id(prodObjects.getString("product_id"));
// Log.e("Trending id", jobj.getString("product_id"));
home.setProduct_name(prodObjects.getString("product"));
NumberFormat nf = NumberFormat.getInstance();
nf.setMinimumFractionDigits(2);
nf.setMaximumFractionDigits(2);
home.setProduct_price(nf.format(Double.parseDouble(prodObjects.getString("price"))));
home.setProduct_listprice(nf.format(Double.parseDouble(prodObjects.getString("list_price"))));
String mAmount = prodObjects.getString("amount");
home.setAmount(mAmount);
Item item = new Item();
item.setName(prodObjects.getString("product"));
item.setProductId(prodObjects.getString("product_id"));
item.setPrice(nf.format(Double.parseDouble(prodObjects.getString("price"))));
item.setListPrice(nf.format(Double.parseDouble(prodObjects.getString("list_price"))));
item.setImage(prodObjects.getJSONObject("main_pair").getJSONObject("detailed").getString("image_path"));
item.setAmount(mAmount);
home.setProduct_image(prodObjects.getJSONObject("main_pair").getJSONObject("detailed").getString("image_path"));
if (prodObjects.getString("status").equalsIgnoreCase("A") && !prodObjects.getString("amount").equalsIgnoreCase("0")) {
Sports.add(home);
trendingItemList.add(item);
}
}
// Log.e("Length", String.valueOf(Sports.size()));
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(Void result) {
super.onPostExecute(result);
shouldFetchTrending = true;
if (value) {
trendingItemAdapter = new ItemAdapter(HomeActivity.this, trendingItemList);
mTrendingRecyclerView.setAdapter(trendingItemAdapter);
}
trendingItemAdapter.notifyDataSetChanged();
mTrendingRecyclerView.addOnItemTouchListener(new RecyclerItemClickListener(HomeActivity.this, new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
((CardView) view).setCardElevation(100);
Intent myintent = new Intent(HomeActivity.this, ProductPageActivity.class);
myintent.putExtra("Prodid", trendingItemList.get(position).getProductId());
myintent.putExtra("FromHome", "Home");
startActivity(myintent);
}
}));
try {
for (int i = 0; i < Sports.size(); ++i) {
trendinglinear[i].setVisibility(View.VISIBLE);
tname[i].setText(Sports.get(i).getProduct_name());
tprice[i].setText(Sports.get(i).getProduct_price());
((View) tname[i].getParent()).setTag(Sports.get(i).getProduct_id());
String[] simg = new String[25];
simg[i] = Sports.get(i).getProduct_image();
//Log.e("image", simg[i]);
Picasso.with(getApplicationContext()).load(simg[i]).error(R.drawable.ic_launcher).resize(400, 400).into(timage[i]);
}
} catch (Exception e) {
//Toast.makeText(HomeActivity.this, "Failed to connect to internet Try again !", Toast.LENGTH_SHORT).show();
}
}
}
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder> {
private List<Item> itemList;
private Context context;
private int lastPosition = -1;
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.home_recycler_item, parent, false);
ViewHolder vh = new ViewHolder(v);
return vh;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Item item = itemList.get(position);
holder.tvName.setText(item.getName());
if(Integer.valueOf(item.getAmount()) == 0)
holder.tvOutofstack.setVisibility(View.VISIBLE);
else holder.tvOutofstack.setVisibility(View.INVISIBLE);
holder.tvPrice.setText(item.getPrice());
Picasso.with(context).load(item.getImage()).into(holder.ivImage);
setAnimation(holder.cardView, position);
}
@Override
public int getItemCount() {
return itemList.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView tvName,tvOutofstack;
public TextView tvPrice;
public ImageView ivImage;
public CardView cardView;
public ViewHolder(View itemView) {
super(itemView);
tvName = (TextView) itemView.findViewById(R.id.tv_name);
tvOutofstack = (TextView) itemView.findViewById(R.id.item_adapter_tv);
tvPrice = (TextView) itemView.findViewById(R.id.tv_price);
ivImage = (ImageView) itemView.findViewById(R.id.iv_image);
cardView = (CardView) itemView.findViewById(R.id.card_view);
}
}
public ItemAdapter(Context context, List<Item> itemList) {
this.itemList = itemList;
this.context = context;
}
private void setAnimation(View viewToAnimate, int position)
{
// If the bound view wasn't previously displayed on screen, it's animated
if (position > lastPosition)
{
Animation animation = AnimationUtils.loadAnimation(context, android.R.anim.slide_in_left);
viewToAnimate.startAnimation(animation);
lastPosition = position;
}
}
}
Some error shown(Log):
java.lang.InternalError：在运行时关闭期间启动的线程07-13 09：01：29.721 32089-1640 /？ W / System.err：在java.lang.Thread.nativeCreate（Native Method）----------和---------- GC_FOR_ALLOC释放1057K，20％免费115415K / 143088K，暂停295ms，总计295ms 07-13 11：57：15.692 11792-12003 / com.dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）到116.585MB 07-13 11：57：15.936 11792-12001 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放<1K，17％自由119321K / 143088K，暂停245ms，总计245ms 07-13 11：57：15.960 11792-12017 / com.dealmaar.customer D / dalvikvm ：GC_FOR_ALLOC释放41K，17％免费119389K / 143088K，暂停21ms，总计21ms 07-13 11：57：15.960 11792-12017 / com.dealmaar.customer I / dalvikvm-heap：将堆（frag case）增长到120.466MB 4000012字节分配07-13 11：57：15.992 11792-12003 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放8K，14％免费123287K / 143088K，暂停29ms，总计29ms 07-13 11：57：15.992 11792 -11792 / com.dealmaar.customer I / Choreographer：跳过34帧！应用程序可能在其主线程上做了太多工作 . 07-13 11：57：16.036 11792-12001 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放8172K，20％免费115531K / 143088K，暂停23ms，总计23ms 07-13 11：57：16.036 11792-12001 / com .dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）到116.699MB 07-13 11：57：16.068 11792-12003 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放6K，17 ％免费119431K / 143088K，暂停29ms，总计29ms 07-13 11：57：16.096 11792-12017 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放119K，17％免费119613K / 143088K，暂停19ms，总计19ms 07- 13 11：57：16.096 11792-12017 / com.dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）为120.685MB 07-13 11：57：16.124 11792-12001 / com.dealmaar .customer D / dalvikvm：GC_FOR_ALLOC释放<1K，14％免费123519K / 143088K，暂停28ms，总计28ms 07-13 11：57：16.136 11792-11792 / com.dealmaar.customer V / ......：最后一项哇！ 07-13 11：57：16.172 11792-12002 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放4252K，14％免费119709K / 139172K，暂停31ms，总计32ms 07-13 11：57：16.180 11792-12002 / com .dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）为120.779MB 07-13 11：57：16.456 11792-12003 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放5K，12 ％免费123609K / 139172K，暂停263ms，总计263ms 07-13 11：57：16.680 11792-12003 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放3730K，14％免费120100K / 139172K，暂停170ms，总计170ms 07- 13 11：57：16.680 11792-12003 / com.dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）到121.161MB 07-13 11：57：16.712 11792-12002 / com.dealmaar .customer D / dalvikvm：GC_FOR_ALLOC释放4K，11％免费124002K / 139172K，暂停32ms，总计32ms 07-13 11：57：16.716 11792-11792 / com.dealmaar.customer I / Choreographer：跳过39帧！应用程序可能在其主线程上做了太多工作 . 07-13 11:57:16.724 11792-11792 / com.dealmaar.customer V / ...：最后一项哇！ 07-13 11：57：17.032 11792-12001 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放269K，11％免费124134K / 139172K，暂停257ms，总计257ms 07-13 11：57：17.068 11792-12001 / com .dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）到125.100MB 07-13 11：57：17.104 11792-11818 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放了44K，11 ％免费127996K / 143080K，暂停36ms，总计36ms 07-13 11：57：17.292 11792-12002 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放75K，11％免费128064K / 143080K，暂停179ms，总计179ms 07- 13 11：57：17.292 11792-12002 / com.dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）为128.938MB 07-13 11：57：17.324 11792-12003 / com.dealmaar .customer D / dalvikvm：GC_FOR_ALLOC释放1K，11％免费131969K / 146988K，暂停31ms，总计31ms 07-13 11：57：17.348 11792-12003 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放<1K，11％免费131969K / 146988K，暂停22ms，总计22ms 07-13 11：57：17.352 11792-12003 / com . dealmaar.customer I / dalvikvm-heap：将堆（frag case）增长到132.752MB进行4000012字节分配07-13 11：57：17.384 11792-12001 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放0K，10％免费135876K / 150896K，暂停32ms，总计32ms 07-13 11：57：17.384 11792-11792 / com.dealmaar.customer I / Choreographer：跳过33帧！该应用程序可能在其主线程上做了太多工作 . 07-13 11:57:17.384 11792-11792 / com.dealmaar.customer V / ...：最后一项哇！ 07-13 11：57：17.420 11792-12017 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放133K，10％免费135855K / 150896K，暂停26ms，总计29ms 07-13 11：57：17.460 11792-12017 / com .dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）为136.546MB 07-13 11：57：17.736 11792-12003 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放5K，10 ％free 139756K / 154804K，暂停275ms，总计275ms 07-13 11：57：17.980 11792-12002 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放16073K，20％免费124155K / 154804K，暂停168ms，总计168ms 07- 13 11：57：17.980 11792-12002 / com.dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）为125.121MB 07-13 11：57：18.012 11792-12001 / com.dealmaar .customer D / dalvikvm：GC_FOR_ALLOC释放48K，18％免费128012K / 154804K，暂停30ms，总计30ms 07-13 11：57：18.032 11792-12001 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放32K，18％免费128044K / 154804K，暂停18ms，总计18ms 07-13 11：57：18.032 11792-12001 / c om.dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）为128.918MB 07-13 11：57：18.064 11792-12017 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放0K， 15％免费131950K / 154804K，暂停30ms，总计30ms 07-13 11：57：18.084 11792-12017 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放32K，15％免费131982K / 154804K，暂停19ms，总计19ms 07 -13 11：57：18.084 11792-12017 / com.dealmaar.customer I / dalvikvm-heap：将堆（frag case）增长到132.765MB，用于4000012字节分配07-13 11：57：18.104 11792-11818 / com . dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放0K，13％免费135889K / 154804K，暂停20ms，总计20ms 07-13 11：57：18.108 11792-11792 / com.dealmaar.customer I / Choreographer：跳过42帧！应用程序可能在其主线程上做了太多工作 . 07-13 11:57:18.136 11792-12003 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放125K，13％免费135840K / 154804K，暂停26ms，总计27ms 07-13 11：57：18.140 11792-12003 / com .dealmaar.customer I / dalvikvm-heap：为4000012字节分配增长堆（frag case）为136.532MB 07-13 11：57：18.168 11792-11999 / com.dealmaar.customer D / dalvikvm：GC_FOR_ALLOC释放2K，10 ％免费139744K / 154804K，暂停29ms，总计29ms 07-13 11：57：19.216 11792-11792 / com.dealmaar.customer I / Choreographer：跳过32帧！应用程序可能在其主线程上做了太多工作 . 07-13 11：57：19.800 11792-11792 / com.dealmaar.customer I / Choreographer：跳过34帧！应用程序可能在其主线程上做了太多工作 .
3 回答
应用程序因内存管理失败而崩溃，此处每个项目都分配了动画，并且应用的动画未被清除 . 我已经解决了您花费1天的问题，这对我有用 .
In my ViewHolder added method:
你有超出内存的例外 . 在某些设备中，当您传递最大堆时，它不会显示任何日志，JVM只会终止您的应用程序 . 当您缓慢滚动时，您让JVM完成其垃圾收集过程，但是当您快速滚动时，它没有足够的时间来完成其任务，您将通过最大堆 . 我看到你持有对视图列表和ImageViews的引用 .
这可能是您的堆达到最大大小的原因之一 .
你在主线程中做了太多工作 . 系统是通过它的限制并执行您的过程它需要大量的资源，它冻结主UI线程导致ANR错误 . 我建议您使用
AsyncTask在后台线程中执行所有API调用和JSON解析 .