我在本地数据库中有近6,000个数据。在一个片段上，我从该记录中得到一个字段，即“ EAN Code”，即接近6,000。现在，我在ArrayList中设置此数据。之后，我在AutoTextCompleteView的适配器中设置该ArrayList。当我搜索AutoTextCompleteView时，过了一段时间，它挂了我的页面。我的片段没有响应。我感到困惑是由于数据过多还是什么。请帮忙。
代码：
if (getCodeType.equals("art")) {
modelProductCodeList = databaseHelper.getProductsArticleCode();
for (int k = 0; k < modelProductCodeList.size(); k++) {
productCodeList.add(modelProductCodeList.get(k).getArticle_code());
}
actSearchCode.setAdapter(null);
adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, android.R.id.text1, productCodeList);
actSearchCode.setAdapter(adapter);
}
rgGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
if (i == R.id.rdbArticleCode) {
actSearchCode.setText("");
getCodeType = "art";
modelProductCodeList = databaseHelper.getProductsArticleCode();
databaseHelper.close();
productCodeList.clear();
for (int k = 0; k < modelProductCodeList.size(); k++) {
productCodeList.add(modelProductCodeList.get(k).getArticle_code());
}
actSearchCode.setAdapter(null);
adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, android.R.id.text1, productCodeList);
actSearchCode.setAdapter(adapter);
} else if (i == R.id.rdbEANCode) {
actSearchCode.setText("871128");
getCodeType = "ean";
modelProductCodeList = databaseHelper.getProductsEANCode();
databaseHelper.close();
productCodeList.clear();
for (int k = 0; k < modelProductCodeList.size(); k++) {
productCodeList.add(modelProductCodeList.get(k).getEan_code());
}
actSearchCode.setAdapter(null);
adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, android.R.id.text1, productCodeList);
actSearchCode.setAdapter(adapter);
}
}
});
actSearchCode.setThreshold(3);
actSearchCode.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(actSearchCode.getApplicationWindowToken(), 0);
Fragment fragment = new ProductDetailFragment();
FragmentManager fragmentManager = getFragmentManager(); // this is basically context of the class
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
Bundle bundle = new Bundle();
bundle.putString("product_art", (String) adapterView.getItemAtPosition(i));
bundle.putString("source_type", getCodeType);
fragment.setArguments(bundle);
fragmentTransaction.replace(R.id.frame, fragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
});
整个片段代码
public class SearchProductFragment extends Fragment implements View.OnClickListener {
ImageButton imgBarcodeScan;
AutoCompleteTextView actSearchCode;
RadioButton rdbArticleCode, rdbEANCode;
RadioGroup rgGroup;
ImageView imgClose,imgSourceClose;
String getCodeType = "art";
DatabaseHelper databaseHelper;
ArrayList<ModelProductDetail> modelProductArticleCodeList;
ArrayList<ModelProductDetail> modelProductCodeList;
ArrayList<ModelUnrecognisedCode> modelUnrecognisedCodeArrayList;
ArrayList<ModelProductDetail> singleProductDetailList;
ArrayList<ModelUnrecognisedCode> singleUnrecognisedCheck;
List<String> productCodeList;
private ZBarScannerView scannerView;
private LayoutInflater mInflater;
private ViewGroup mContainer;
ViewGroup placeholder;
private static final int REQUEST_CAMERA = 1;
String article_code;
Boolean unrecognised_alert;
String unrecognised_code = "";
ArrayAdapter<String> adapter;
int codeValue;
KeyEvent keyevent;
// scan code
ScanDevice sm;
private final static String SCAN_ACTION = "scan.rcv.message";
private String barcodeStr = "";
private BroadcastReceiver mScanReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
byte[] barocode = intent.getByteArrayExtra("barocode");
int barocodelen = intent.getIntExtra("length", 0);
byte temp = intent.getByteExtra("barcodeType", (byte) 0);
android.util.Log.i("debug", "----codetype--" + temp);
barcodeStr = new String(barocode, 0, barocodelen);
Log.e("TAG", " barcodeStr" + barcodeStr);
// showScanResult.setText(barcodeStr);
sm.stopScan();
codeValue = 1;
if(! (barcodeStr.equals(""))){
singleProductDetailList = databaseHelper.getProductByEANCode(barcodeStr);
if(singleProductDetailList.size() != 0){
Fragment fragment = new ProductDetailFragment();
FragmentManager fragmentManager = getFragmentManager(); // this is basically context of the class
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
Bundle bundle = new Bundle();
bundle.putString("product_art", barcodeStr);
bundle.putString("source_type", "ean");
fragment.setArguments(bundle);
fragmentTransaction.replace(R.id.frame, fragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
else {
singleUnrecognisedCheck = new ArrayList<>();
singleUnrecognisedCheck = databaseHelper.getUnrecognisedByCode(barcodeStr);
Vibrator vibrator = (Vibrator) context.getSystemService(context.VIBRATOR_SERVICE);
vibrator.vibrate(1000);
MediaPlayer mp = MediaPlayer.create(context, R.raw.beep);
mp.start();
if(singleUnrecognisedCheck.size() == 0){
getDialog();
}
else {
Toast.makeText(getActivity(),R.string.unrecognised_code_has_been_added, Toast.LENGTH_SHORT).show();
}
}
}
}
};
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_search_product, container, false);
mInflater = inflater;
mContainer = container;
getIntializedID(v);
placeholder = (ViewGroup) v;
return placeholder;
}
private void getIntializedID(View view) {
//scan device code
sm = new ScanDevice();
//
imgBarcodeScan = (ImageButton) view.findViewById(R.id.imgBarcodeScan);
rgGroup = (RadioGroup) view.findViewById(R.id.rgGroup);
actSearchCode = (AutoCompleteTextView) view.findViewById(R.id.actSearchCode);
imgClose = (ImageView) view.findViewById(R.id.imgClose);
imgSourceClose = (ImageView) view.findViewById(R.id.imgSourceClose);
databaseHelper = new DatabaseHelper(getActivity());
modelProductCodeList = new ArrayList<>();
productCodeList = new ArrayList<>();
singleProductDetailList = new ArrayList<>();
imgBarcodeScan.setOnClickListener(this);
imgClose.setOnClickListener(this);
// new chnage in code
actSearchCode.setText("");
actSearchCode.setAdapter(null);
actSearchCode.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
//do nothing
if(actSearchCode.getText().length() == 0){
if(getCodeType.equals("ean")){
actSearchCode.setText("871128");
}
else{
actSearchCode.setText("");
}
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
//do nothing
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if(s.length() != 0) {
imgClose.setVisibility(View.VISIBLE);
imgSourceClose.setVisibility(View.GONE);
} else {
imgClose.setVisibility(View.GONE);
imgSourceClose.setVisibility(View.VISIBLE);
}
}
});
adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, android.R.id.text1, productCodeList);
actSearchCode.setAdapter(adapter);
// sample code barcode
}
public void changeFragments(Fragment fragment) {
FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.frame, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
@Override
public void onClick(View view) {
if (view.getId() == R.id.imgBarcodeScan) {
//MediaPlayer mp = MediaPlayer.create(getActivity(), R.raw.beep);
// mp.start();
//scanCode(view);
// onKeyDown(301, keyevent);
Intent in = new Intent(getActivity(), ScanActivity.class);
startActivity(in);
}
else if(view.getId() == R.id.imgClose){
if(getCodeType.equals("ean")){
actSearchCode.setText("871128");
}
else {
actSearchCode.setText("");
}
}
}
@Override
public void startActivityForResult(Intent intent, int requestCode) {
super.startActivityForResult(intent, requestCode);
}
private void getDialog() {
final Dialog d = new Dialog(getActivity());
d.setContentView(R.layout.dialog_unrecognised_code);
d.setCanceledOnTouchOutside(false);
d.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
final EditText etCode = (EditText) d.findViewById(R.id.etCode);
final EditText etrecognisedComment = (EditText) d.findViewById(R.id.etrecognisedComment);
ImageView imgClose = (ImageView) d.findViewById(R.id.imgClose);
ImageButton ibSubmit = (ImageButton) d.findViewById(R.id.ibSubmit);
if(codeValue == 1){
etCode.setText(barcodeStr);
}else if(codeValue == 2) {
etCode.setText(unrecognised_code);
}
imgClose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
KEY_UNRECOGNISED_CODE = "";
d.dismiss();
}
});
ibSubmit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
SessionManager session = new SessionManager(getContext().getApplicationContext());
HashMap<String, String> user = session.getSelectedShopDetail();
ModelUnrecognisedCode modelUnrecognisedCode = new ModelUnrecognisedCode();
modelUnrecognisedCode.setUnrecognised_code(etCode.getText().toString());
modelUnrecognisedCode.setUnrecognised_comment(etrecognisedComment.getText().toString());
modelUnrecognisedCode.setShop_id(user.get("shop_id"));
modelUnrecognisedCode.setShop_name_fr(user.get("shop_name_fr"));
modelUnrecognisedCode.setShop_name_nl(user.get("shop_name_nl"));
databaseHelper.addUnrecognisedCode(modelUnrecognisedCode);
// changeFragments(new SearchProductFragment());
modelUnrecognisedCodeArrayList = new ArrayList<>();
modelUnrecognisedCodeArrayList = databaseHelper.getUnrecognisedCode();
Toast.makeText(getActivity(), R.string.unrecognised_code_added_in_cart,Toast.LENGTH_SHORT).show();
KEY_UNRECOGNISED_CODE = "";
d.dismiss();
}
});
d.show();
}
public void onKeyDown(int keyCode, KeyEvent event) {
int charCode = event.getKeyCode();
System.out.println("charCode = " + keyCode +" "+event);
//sm.openScan();
if (charCode == 302 || charCode == 301 || charCode == 303) {
InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(actSearchCode.getApplicationWindowToken(), 0);
System.out.println("openScannerL = " + sm.getOutScanMode());
sm.openScan();
} else if (charCode == 82) {
} else {
sm.closeScan();
}
}
@Override
public void onPause() {
// TODO Auto-generated method stub
super.onPause();
if (sm != null) {
sm.stopScan();
}
getActivity().unregisterReceiver(mScanReceiver);
}
@Override
public void onResume() {
// TODO Auto-generated method stub
super.onResume();
IntentFilter filter = new IntentFilter();
filter.addAction(SCAN_ACTION);
getActivity().registerReceiver(mScanReceiver, filter);
// article code start
modelProductCodeList.clear();
productCodeList.clear();
if (getCodeType.equals("art")) {
modelProductCodeList.clear();
productCodeList.clear();
modelProductCodeList = databaseHelper.getProductsArticleCode();
for (int k = 0; k < modelProductCodeList.size(); k++) {
productCodeList.add(modelProductCodeList.get(k).getArticle_code());
}
}
rgGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
if (i == R.id.rdbArticleCode) {
actSearchCode.setText("");
getCodeType = "art";
modelProductCodeList.clear();
productCodeList.clear();
modelProductCodeList = databaseHelper.getProductsArticleCode();
databaseHelper.close();
for (int k = 0; k < modelProductCodeList.size(); k++) {
productCodeList.add(modelProductCodeList.get(k).getArticle_code());
}
adapter.notifyDataSetChanged();
} else if (i == R.id.rdbEANCode) {
actSearchCode.setText("871128");
getCodeType = "ean";
modelProductCodeList.clear();
productCodeList.clear();
modelProductCodeList = databaseHelper.getProductsEANCode();
databaseHelper.close();
for (int k = 0; k < modelProductCodeList.size(); k++) {
productCodeList.add(modelProductCodeList.get(k).getEan_code());
}
adapter.notifyDataSetChanged();
}
}
});
actSearchCode.setThreshold(3);
actSearchCode.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(actSearchCode.getApplicationWindowToken(), 0);
Fragment fragment = new ProductDetailFragment();
FragmentManager fragmentManager = getFragmentManager(); // this is basically context of the class
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
Bundle bundle = new Bundle();
bundle.putString("product_art", (String) adapterView.getItemAtPosition(i));
bundle.putString("source_type", getCodeType);
fragment.setArguments(bundle);
fragmentTransaction.replace(R.id.frame, fragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
});
//end
if(!(KEY_UNRECOGNISED_CODE.equals(""))) {
if(!(KEY_SOURCE_CODE.equals(""))){
Fragment fragment = new ProductDetailFragment();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager(); // this is basically context of the class
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
Bundle bundle = new Bundle();
bundle.putString("product_art",KEY_UNRECOGNISED_CODE);
bundle.putString("source_type", KEY_SOURCE_CODE);
fragment.setArguments(bundle);
fragmentTransaction.replace(R.id.frame, fragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
KEY_SOURCE_CODE = "";
KEY_UNRECOGNISED_CODE = "";
}
else {
unrecognised_code = KEY_UNRECOGNISED_CODE;
codeValue = 2;
getDialog();
}
}
if (getArguments() != null) {
unrecognised_alert = getArguments().getBoolean("unrecognised_alert");
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
}
}
答案 0 :(得分：0)
您应该在初始化所有变量后将它们添加到onCreate中
adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, android.R.id.text1, productCodeList);
actSearchCode.setAdapter(adapter);
，而且您不需要每次都只需要设置适配器一次就设置新适配器，然后使用productCodeList.clear（）并添加所有对象，然后调用 adapter.notifyDatasetChanged（）
答案 1 :(得分：0)
最好使用其他ArrayList而不是单个ArrayList
HashMap<String,ArrayList> mapSearchList= new LinkedHashMap<>();
在ontextchange侦听器中，如果您从第一个字符开始设置为适配器
setadapter(context,mapSearchList.get("a")) // etc
并设置阈值