我有一个填充了复选框的ListView。当我点击一个复选框时，第四个复选框及其乘法（第8，第12等等）也会自动检查，而不会点击它们。
更新代码
public class CarActivity extends Activity implements
DownloadResultReceiver.Receiver {
private DownloadResultReceiver mReceiver;
List<Item> items;
String carNumber;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
Button submit;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_car);
Bundle b = this.getIntent().getExtras();
String url = b.getString("url");
carNumber = b.getString("carNumber");
String model = b.getString("model");
final String category = b.getString("category");
submit = (Button) findViewById(R.id.submit);
submit.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
String url = null;
if (category.equals("الأجهزة الطبية")) {
url = "http://192.168.1.136/final/medical_equipments/insert.php";
} else if (category.equals("الأفراد")) {
url = "http://192.168.1.136/final/persons/insert.php";
} else if (category.equals("التدريب")) {
url = "http://192.168.1.136/final/training/insert.php";
} else if (category.equals("الصيانة الميكانيكية")) {
url = "http://192.168.1.136/final/mechanical_repair/insert.php";
} else if (category.equals("الصيانة الطبية")) {
url = "http://192.168.1.136/final/medical_repair/insert.php";
} else if (category.equals("المستلزمات الطبية")) {
url = "http://192.168.1.136/final/medical_requirments/insert.php";
} else if (category.equals("تجهيزات كابينة السائق")) {
url = "http://192.168.1.136/final/driver_equipment/insert.php";
} else if (category.equals("سجلات السيارة")) {
url = "http://192.168.1.136/final/car_records/insert.php";
}
new SubmitItems().execute(url);
}
});
//getActionBar().setTitle("");
//if (Connection.isConnectedToInternet(getApplicationContext())) {
if (true) {
/* Starting Download Service */
mReceiver = new DownloadResultReceiver(new Handler());
mReceiver.setReceiver(this);
Intent intent = new Intent(Intent.ACTION_SYNC, null, this,
DownloadService.class);
/* Send optional extras to Download IntentService */
intent.putExtra("url", url);
String data = null;
try {
data = URLEncoder.encode("model", "UTF-8") + "=" + URLEncoder.encode(model, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
intent.putExtra("data", data);
intent.putExtra("receiver", mReceiver);
intent.putExtra("requestId", 101);
startService(intent);
} else {
new AlertDialog.Builder(CarActivity.this)
.setTitle("Oops")
.setMessage("No Internet Connection!")
.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
}
}).show();
}
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
@Override
public void onStart() {
super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Car Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.example.khloud.qery/http/host/path")
);
AppIndex.AppIndexApi.start(client, viewAction);
}
@Override
public void onStop() {
super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Car Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.example.khloud.qery/http/host/path")
);
AppIndex.AppIndexApi.end(client, viewAction);
client.disconnect();
}
class SubmitItems extends AsyncTask<String, String, String> {
private ProgressDialog pDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(CarActivity.this);
pDialog.setMessage("Attempting submitting...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
String url = args[0];
try {
for (Item item : items) {
String data = URLEncoder.encode("carNumber", "UTF-8") + "=" + URLEncoder.encode(carNumber, "UTF-8") + "&" +
URLEncoder.encode("itemName", "UTF-8") + "=" + URLEncoder.encode(item.getName(), "UTF-8") + "&" +
URLEncoder.encode("found", "UTF-8") + "=" + URLEncoder.encode(item.getFound() + "", "UTF-8") + "&" +
URLEncoder.encode("notFound", "UTF-8") + "=" + URLEncoder.encode(item.getNotFound() + "", "UTF-8") + "&" +
URLEncoder.encode("working", "UTF-8") + "=" + URLEncoder.encode(item.getWorking() + "", "UTF-8") + "&" +
URLEncoder.encode("notWorking", "UTF-8") + "=" + URLEncoder.encode(item.getNotWorking() + "", "UTF-8") + "&" +
URLEncoder.encode("notes", "UTF-8") + "=" + URLEncoder.encode(item.getNotes(), "UTF-8");
Connection.getJSONfromURL(url, data);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (Exception e) {
return null;
}
return "save Successfully";
}
protected void onPostExecute(String file_url) {
pDialog.dismiss();
if (file_url != null) {
Toast.makeText(CarActivity.this, file_url, Toast.LENGTH_SHORT)
.show();
finish();
}
}
}
@Override
public void onReceiveResult(int resultCode, Bundle resultData) {
switch (resultCode) {
case DownloadService.STATUS_RUNNING:
break;
case DownloadService.STATUS_FINISHED:
String response = resultData.getString("result");
if (response == null)
Log.d("respooo", "null");
intializeProcess(response);
break;
case DownloadService.STATUS_ERROR:
/* Handle the error */
String error = resultData.getString("error");
Log.d("error", error);
break;
}
}
private void intializeProcess(String response) {
Log.d("response", response);
ItemsRetrieval itemRetrieval = new ItemsRetrieval();
if (itemRetrieval.GetMainAPI(response)) {
// load.setVisibility(View.GONE);
items = itemRetrieval.getItems();
Log.e("Items Size", items.size() + "");
doWork();
//getActionBar().setTitle(singer.getName());
//getActionBar().setIcon(R.drawable.singer_icon);
}
}
private void doWork() {
populateListView();
registerClickCallback();
}
private void populateListView() {
ArrayAdapter<Item> adapter = new MyListAdapter();
ListView list = (ListView) findViewById(R.id.items);
list.setAdapter(adapter);
}
private void registerClickCallback() {
ListView list = (ListView) findViewById(R.id.items);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(final AdapterView<?> parent, View viewClicked,
final int position, long id) {
final Item item = items.get(position);
///////////////////////////////////
}
});
}
///////////////////
private class MyListAdapter extends ArrayAdapter<Item> {
public MyListAdapter() {
super(CarActivity.this, R.layout.item, items);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Make sure we have a view to work with (may have been given null)
Item item = items.get(position);
ViewHolder holder = null;
View itemView = convertView;
if (itemView == null){
itemView = getLayoutInflater().inflate(R.layout.item, parent, false);
holder = new ViewHolder();
holder.textView1 = (TextView) itemView.findViewById(R.id.textView1);
itemView.setTag(holder);
}
else{
holder = (ViewHolder) itemView.getTag();
}
//set the value of the item name - you only do it here to avoid repeating the items when convertView is NULL (happens when you scroll to end of list)
holder.textView1.setText(item.getName());
return itemView;
}
private class ViewHolder {
TextView textView1;
}
}}`
答案 0 :(得分：1)
您应该为适配器实施ViewHolder模式 - 更改
adapter code into something like this:
private class MyListAdapter extends ArrayAdapter<Item> {
public MyListAdapter() {
super(CarActivity.this, R.layout.item, items);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Make sure we have a view to work with (may have been given null)
Item item = items.get(position);
ViewHolder holder = null;
View itemView = convertView;
if (itemView == null){
itemView = getLayoutInflater().inflate(R.layout.item, parent, false);
holder = new ViewHolder();
holder.textView1 = (TextView) itemView.findViewById(R.id.textView1);
itemView.setTag(holder);
}
else{
holder = (ViewHolder) itemView.getTag();
}
//set the value of the item name - you only do it here to avoid repeating the items when convertView is NULL (happens when you scroll to end of list)
holder.textView1.setText(item.getName());
return itemView;
}
private class ViewHolder {
TextView textView1;
}
}