我有一个ToDo应用程序,我需要对两个ArrayLists进行排序 - 首先使用Strings(用户指定的条目名称),然后使用Bitmaps(用户添加的图像作为条目附件)。如果我使用字符串对arraylist进行排序,我也必须使用位图对数组进行排序,因为位图必须与字符串匹配。 第一个arraylist(Strings)的排序工作得很好但是第二个arraylist(Bitmasp)没有。我收到此错误:
致命的例外:主要 处理:com.example.administrator.myapplication,PID:23690 java.lang.IndexOutOfBoundsException:索引0无效,大小为0 at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255) at java.util.ArrayList.get(ArrayList.java:308) 在com.example.administrator.myapplication.CustomAdapter.getView(CustomAdapter.java:67) 在android.widget.AbsListView.obtainView(AbsListView.java:2346) 在android.widget.ListView.measureHeightOfChildren(ListView.java:1280) 在android.widget.ListView.onMeasure(ListView.java:1188) 在android.view.View.measure(View.java:18788) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 在android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) 在android.widget.LinearLayout.measureVertical(LinearLayout.java:748) 在android.widget.LinearLayout.onMeasure(LinearLayout.java:630) 在android.view.View.measure(View.java:18788) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 在android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:610) 在android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:78) 在android.support.design.widget.AppBarLayout $ ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1132) 在android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:675) 在android.view.View.measure(View.java:18788) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 在android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 在android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135) 在android.view.View.measure(View.java:18788) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 在android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) 在android.widget.LinearLayout.measureVertical(LinearLayout.java:748) 在android.widget.LinearLayout.onMeasure(LinearLayout.java:630) 在android.view.View.measure(View.java:18788) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 在android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 在android.view.View.measure(View.java:18788) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 在android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) 在android.widget.LinearLayout.measureVertical(LinearLayout.java:748) 在android.widget.LinearLayout.onMeasure(LinearLayout.java:630) 在android.view.View.measure(View.java:18788) 在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 在android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 在com.android.internal.policy.PhoneWindow $ DecorView.onMeasure(PhoneWindow.java:2643) 在android.view.View.measure(View.java:18788) 在android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2100) 在android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1216) 在android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1452) 在android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107) 在android.view.ViewRootImpl $ TraversalRunnable.run(ViewRootImpl.java:6013) 在android.view.Choreographer $ CallbackRecord.run(Choreographer.java:858) 在android.view.Choreographer.doCallbacks(Choreographer.java:670) 在android.view.Choreographer.doFrame(Choreographer.java:606) 在android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:844) 在android.os.Handler.handleCallback(Handler.java:739) 在android.os.Handler.dispatchMessage(Handler.java:95) 在android.os.Looper.loop(Looper.java:148) 在android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) 在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:726) 在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
private void Sort(String param){
Toast t2 = Toast.makeText(MainActivity.this, "You selected : " + param, Toast.LENGTH_LONG);
// t2.show();
String t;
items2.clear();
switch(param) {
case "Nazwa":
Collections.sort(events, Zdarzenie.SortNazwa);
break;
case "Data dodania":
Collections.sort(events, Zdarzenie.SortDataDod);
break;
case "Data zakończenia":
Collections.sort(events, Zdarzenie.SortData);
break;
case "Priorytet":
Collections.sort(events, Zdarzenie.SortPriorytet);
break;
case "Status":
Collections.sort(events, Zdarzenie.SortStatus);
break;
}
for (int i = 0; i < events.size(); i++) {
Zdarzenie z = events.get(i);
if(param.equalsIgnoreCase("Nazwa")){
t = z.getNazwa() + " " + z.getGodzina() + " " + z.getData() + " " + z.getData() + " " + z.getGodzina();
items2.add(t);
}
if(param.equalsIgnoreCase("Data dodania")){
t = z.getData_dodania() + " " + z.getGodzina_dodania() + " " + z.getNazwa() + " " + z.getData() + " " + z.getGodzina();
items2.add(t);
}
if(param.equalsIgnoreCase("Data zakończenia")){
t = z.getData() + " " + z.getGodzina() + " " + z.getNazwa() + " " + z.getData() + " " + z.getGodzina();
items2.add(t);
}
if(param.equalsIgnoreCase("Priorytet")){
t = z.getPriorytet() + " " + z.getNazwa() + " " + z.getData() + " " + z.getGodzina();
items2.add(t);
}
if(param.equalsIgnoreCase("Status")){
if (z.isAktywny() == true) {
t = "Aktywny" + " " + z.getNazwa() + " " + z.getData() + " " + z.getGodzina();
items2.add(t);
}
if (z.isAktywny() == false) {
t = "Nieaktywny" + " " + z.getNazwa() + " " + z.getData() + " " + z.getGodzina();
items2.add(t);
}
}
}
//itemsAdapter2 = new CustomAdapter(this, items2,images2);
int is = itemsAdapter.getCount();
Toast t3 = Toast.makeText(MainActivity.this, "Items2.size : " + is, Toast.LENGTH_LONG);
t3.show();
String tmp1,tmp2;
for(int i =0 ; i<is ; i++){
for(int j=0; j<is; j++){
itemsAdapter.getItem(i);
// images.get(i);
// itemsAdapter2.getItem(j);
items2.get(j);
// if(itemsAdapter.getItem(i).equals(itemsAdapter2.getItem(j))){
if( itemsAdapter.getItem(i).toString().contains(items2.get(j).toString())){
for(int k = 0 ; k<is; k++){
if ( k == j)
images2.add(k,itemsAdapter.image.get(i));
//itemsAdapter.image.get(i);
}
}
}
}
// lvItems.setAdapter(new CustomAdapter(this, items2,images));
/* itemsAdapter2 = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, items2);*/
itemsAdapter2 = new CustomAdapter(this, items2,images2);
// itemsAdapter2.notifyDataSetChanged();
lvItems.setAdapter(itemsAdapter2);
}
CustomAdapter.java
package com.example.administrator.myapplication;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
public class CustomAdapter extends BaseAdapter{
public static View rowView;
ArrayList<String> result;
Context context;
//Bitmap [] image;
ArrayList<Bitmap> image;
private static LayoutInflater inflater=null;
public CustomAdapter(MainActivity mainActivity, ArrayList<String> items, ArrayList<Bitmap> images) {
// TODO Auto-generated constructor stub
result=items;
context=mainActivity;
image=images;
inflater = ( LayoutInflater )context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return result.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public class Holder
{
TextView tv;
ImageView img;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
rowView = inflater.inflate(R.layout.list_single, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result.get(position));
// holder.img.setImageResource(image.get(position));
holder.img.setImageBitmap(image.get(position));
rowView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(context, "You Clicked "+position, Toast.LENGTH_LONG).show();
Intent intent = new Intent(context.getApplicationContext() ,EditActivity.class);
String message = Integer.toString(position);
//long pos = listView.getItemIdAtPosition(position);
intent.putExtra("message", message);
context.startActivity(intent);`enter code here`
}
});
return rowView;
}
}
答案 0 :(得分:1)
您可以使用Maps而不是两个不同的Arraylists来存储字符串和位图。
您可以将字符串作为键和位图作为值,并迭代地图以获取特定索引的结果。
我希望这能解决你的问题。