[英]Getting wrong position on item click in listview
前提條件:-
功能:-如果我選中該復選框,則相應的文本視圖將被啟用,因此將變為可單擊狀態。
此邏輯工作正常,但問題是, 如果我選中第0個位置復選框,則第1個位置的textviews將被啟用
另一種情況是,即使當檢查的第一個復選框僅啟用了第一個TextView的,在TextView的的聽眾我打電話日期選擇器和設置日期,但日期設置為第二的TextView
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View rowView = convertView;
ViewHolder viewHolder = null;
if (rowView == null) {
LayoutInflater inflater = context.getLayoutInflater();
rowView = inflater.inflate(R.layout.rowlayout, null);
viewHolder = new ViewHolder();
viewHolder.textview1 = (TextView) rowView.findViewById(R.id.TextView11);
viewHolder.textview2 = (TextView) rowView.findViewById(R.id.TextView12);
viewHolder.checkbox = (CheckBox) rowView.findViewById(R.id.checkBox1);
rowView.setTag(viewHolder);
}
else{
holder = (ViewHolder) rowView.getTag();
}
viewHolder.textview1.setEnabled(false) //default textview is false
viewHolder.textview2.setEnabled(false) //default textview is false
viewHolder.checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if ( isChecked )
{
holder.textview1.setEnabled(true);
holder.textview2.setEnabled(true);
}
else if ( !isChecked )
{
holder.textview1.setEnabled(false);
holder.textview2.setEnabled(false);
}
}
});
// Textview's listeners here- showing toast in it.
//When checking first checkbox, second position textviews are getting enabled
return rowView;
}
這是我的完整列表視圖custyom類: -
package com.list.filter.datefilter;
import java.util.ArrayList;
import java.util.Date;
import android.app.Activity;
import android.app.FragmentManager;
import android.content.Context;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.TextView;
import com.exzeo.jarvis.ApplicationController;
import com.exzeo.jarvis.R;
import com.exzeo.jarvis.ui.DatePickerFragment;
import com.exzeo.jarvis.ui.DatePickerFragment.onDateSet;
import com.exzeo.jarvis.workards.list.filter.datefilter.model.AdvanceDateFilter;
public class AdvanceDateFilterList extends ListView{
private boolean tabletSize = getResources().getBoolean(R.bool.isTablet);
private CustomFilterAdapter dataAdapter = null;
private Context context;
private OnCheckChangedClickListener changedClickListener;
public AdvanceDateFilterList(Context context, ArrayList<AdvanceDateFilter> filterArray) {
super(context);
this.context=context;
displayListView((Activity) context, filterArray);
}
public void setOnCheckChangedClickListener(OnCheckChangedClickListener listener) {
this.changedClickListener = listener;
}
public interface OnCheckChangedClickListener {
public void onClick(ArrayList<AdvanceDateFilter> filter/*, int position*/);
// public void onDateChange(AdvanceDateFilter filter, int position);
}
@Override
public void setId(int id) {
super.setId(id);
}
@Override
public void setLayoutParams(android.view.ViewGroup.LayoutParams params) {
//TODO:set height dynamic
if (dataAdapter == null) {
// pre-condition
return;
}
int width = ApplicationController.getInstance().getDeviceWidth();
int height = ApplicationController.getInstance().getDeviceHeight();
if(height<width)
height=width;
int totalHeight = 0;
for (int i = 0; i < dataAdapter.getCount(); i++) {
totalHeight +=height/10;
}
if(totalHeight>(height/4))
totalHeight=height/4;
params.height = totalHeight + (this.getDividerHeight() * (dataAdapter.getCount() - 1));
/*
if(tabletSize){
for (int i = 0; i < dataAdapter.getCount(); i++) {
totalHeight +=height/10;
}
if(totalHeight>(height/4))
totalHeight=height/4;
params.height = totalHeight + (this.getDividerHeight() * (dataAdapter.getCount() - 1));
}else{
for (int i = 0; i < dataAdapter.getCount(); i++) {
if(tabletSize)
totalHeight +=height/25;
else
totalHeight +=height/18;
}
if(totalHeight>(height/3))
totalHeight=height/3;
params.height = totalHeight + (this.getDividerHeight() * (dataAdapter.getCount() - 1));
}*/
params.width = -1;
// params.height = -1;
super.setLayoutParams(params);
}
private void displayListView(Activity activity, ArrayList<AdvanceDateFilter> filterArray) {
dataAdapter = new CustomFilterAdapter(activity, context, R.layout.advance_date_filter_row, filterArray);
setAdapter(dataAdapter);
}
private class CustomFilterAdapter extends ArrayAdapter<AdvanceDateFilter> {
private ArrayList<AdvanceDateFilter> filterList;
private ViewHolder holder = null;
private Activity activity;
private int dateCheck = -1;
FragmentManager fragmentManager;
DatePickerFragment newFragment;
public CustomFilterAdapter(Activity activity, Context context, int textViewResourceId, ArrayList<AdvanceDateFilter> filterList) {
super(context, textViewResourceId, filterList);
this.filterList = new ArrayList<AdvanceDateFilter>();
this.filterList.addAll(filterList);
this.activity=activity;
fragmentManager =((Activity) context).getFragmentManager();
newFragment = new DatePickerFragment(context);
}
private class ViewHolder {
CheckBox datefiltercheckbox;
TextView fromDate, toDate;
}
@Override
public int getCount() {
return filterList.size();
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater vi = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(R.layout.advance_date_filter_row, null);
holder = new ViewHolder();
holder.fromDate = (TextView) convertView.findViewById(R.id.fromdate);
holder.toDate = (TextView) convertView.findViewById(R.id.todate);
holder.datefiltercheckbox = (CheckBox) convertView.findViewById(R.id.datefiltercheckbox);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.fromDate.setEnabled(false);
holder.toDate.setEnabled(false);
holder.fromDate.setText("From: "+filterList.get(position).getFromDate());
holder.toDate.setText("To: "+filterList.get(position).getToDate());
if(filterList.get(position).getTypeOfDate().equals("WORKKARDLOSSDATEFILTER"))
holder.datefiltercheckbox.setText("Loss Date");
else if (filterList.get(position).getTypeOfDate().equals("WORKKARDREPORTEDDATEFILTER")) {
holder.datefiltercheckbox.setText("Reported Date");
}
int checkBoxPaddingLeft = (int) (getResources().getDimension(R.dimen.rightDrawerFilterCheckbox)/getResources().getDisplayMetrics().density);
holder.datefiltercheckbox.setPadding(checkBoxPaddingLeft, 0, 0, 0);
holder.datefiltercheckbox.setOnCheckedChangeListener(null);
holder.datefiltercheckbox.setChecked(filterList.get(position).isSelected());
holder.datefiltercheckbox.setTag(filterList.get(position));
if(filterList.get(position).isSelected()){
holder.fromDate.setEnabled(true);
holder.toDate.setEnabled(true);
if(dateCheck == 0){
holder.fromDate.setText("From: "+filterList.get(position).getFromDate());
}
else{
holder.toDate.setText("To: "+filterList.get(position).getToDate());
}
}
else{
holder.fromDate.setEnabled(false);
holder.toDate.setEnabled(false);
if(dateCheck == 0){
holder.fromDate.setText("From: "+filterList.get(position).getFromDate());
}
else{
holder.toDate.setText("To: "+filterList.get(position).getToDate());
}
}
newFragment.setDateListener(new onDateSet() {
@Override
public void onDate(int year, int monthOfYear, int dayOfMonth) {
if(dateCheck == 0){
filterList.get(position).setFromDate(dayOfMonth+"/"+monthOfYear+"/"+year);
holder.fromDate.setText("From: "+filterList.get(position).getFromDate());
}
else{
filterList.get(position).setToDate(dayOfMonth+"/"+monthOfYear+"/"+year);
holder.toDate.setText("To: "+filterList.get(position).getToDate());
}
// changedClickListener.onDateChange(filterList.get(position), position);
changedClickListener.onClick(filterList);
}
});
holder.datefiltercheckbox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){
holder.fromDate.setEnabled(true);
holder.toDate.setEnabled(true);
}
else{
holder.fromDate.setEnabled(false);
holder.toDate.setEnabled(false);
}
notifyDataSetChanged();
filterList.get(position).setSelected(isChecked);
changedClickListener.onClick(filterList);
}
});
holder.fromDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dateCheck = 0;
newFragment.show(fragmentManager, "datePicker");
newFragment.setDateRange(new Date(filterList.get(position).getFromDate()).getTime(),
new Date(filterList.get(position).getToDate()).getTime());
}
});
holder.toDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dateCheck = 1;
newFragment.show(fragmentManager, "datePicker");
newFragment.setDateRange(new Date(filterList.get(position).getFromDate()).getTime(),
new Date(filterList.get(position).getToDate()).getTime());
}
});
return convertView;
}
}
}
看看這個關於在列表項中添加多個可點擊視圖的出色教程。 您問題的主要根源可能是列表視圖回收。 看看這個:
http://cyrilmottier.com/2011/11/23/listview-tips-tricks-4-add-several-clickable-areas/
如您在回答中所說,由於膨脹操作大量使用CPU,因此android正在回收視圖,因此,android嘗試減少膨脹操作量。 我真的不認為假設rowView為null根本不是個好主意。 我認為您需要做的是,在onChange偵聽器中,檢查包含要更改的文本的rowView是否與應更改的文本相同,否則,由於視圖已被更改,因此無需更改該文本。已回收並且不再可見。 當適配器再次需要該視圖時,將正確設置文本視圖。
我注意到,您在接口onCheckedChanged()
上都選中了兩個復選框,可以使用一個參數來查看按下了哪個:
viewHolder.checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if ( isChecked )
{
switch(buttonView.getId()){
case R.id.checkbox1:
holder.textview1.setEnabled(true);
break;
case R.id.checkbox2:
holder.textview2.setEnabled(true);
break;
}
}
else if ( !isChecked )
{
holder.textview1.setEnabled(false);
holder.textview2.setEnabled(false);
}
}
});
我已經遇到了這個問題。 我因為視圖被系統或其他東西重用。
只要將if (rowView == null)
設為true
。 我的意思是改變
if (rowView == null) {
LayoutInflater inflater = context.getLayoutInflater();
rowView = inflater.inflate(R.layout.rowlayout, null);
viewHolder = new ViewHolder();
viewHolder.textview1 = (TextView) rowView.findViewById(R.id.TextView11);
viewHolder.textview2 = (TextView) rowView.findViewById(R.id.TextView12);
viewHolder.checkbox = (CheckBox) rowView.findViewById(R.id.checkBox1);
rowView.setTag(viewHolder);
}
else{
holder = (ViewHolder) rowView.getTag();
}
至
LayoutInflater inflater = context.getLayoutInflater();
rowView = inflater.inflate(R.layout.rowlayout, null);
viewHolder = new ViewHolder();
viewHolder.textview1 = (TextView) rowView.findViewById(R.id.TextView11);
viewHolder.textview2 = (TextView) rowView.findViewById(R.id.TextView12);
viewHolder.checkbox = (CheckBox) rowView.findViewById(R.id.checkBox1);
rowView.setTag(viewHolder);
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.