我在列表视图中使用自定义适配器是可过滤的，我使用两个arraylists，一个用于过滤，第二个用于第一次出现在列表视图中。 它工作正常，我使用复选框我想保存复选框的状态，我正在使用哈希映射，它工作正常，但它花了很多时间加载有地图数组列表。保持复选框处于保存状态的最佳方法是什么。
下面是我的代码
这是我的hashmap和hashmap数组列表
static HashMap<String, String> map = new HashMap<String, String>();
static ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
在这个我的字符串数据来自SQLite数据库。它正常工作我正在使用它进行复选框保存状态。
我的数据来自sqlite的字符串数组：
text = dbOpenHelper.text;
然后我在列表视图中添加数据并从编辑文本中过滤它。
edittext = (EditText) findViewById(R.id.EditText01);
listview = (ListView) findViewById(R.id.ListView01);
listview.setAdapter(new MyCustomAdapter(text, image));
System.out
.println("size of map"+map.size());
System.out
.println("size of list"+mylist.size());
edittext.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
filter_flag = 1;
textlength = edittext.getText().length();
text_sort.clear();
image_sort.clear();
for (int i = 0; i < text.length; i++) {
if (textlength <= text[i].length()) {
if (edittext
.getText()
.toString()
.equalsIgnoreCase(
(String) text[i].subSequence(0,
textlength))) {
text_sort.add(text[i]);
image_sort.add(image[i]);
}
}
}
listview.setAdapter(new MyCustomAdapter(text_sort, image_sort));
}
});
这是我剩下的代码
listview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View v,
int position, long id) {
String str = text[position];
if (filter_flag == 0) {
Toast.makeText(getApplicationContext(),
"text[] = " + text[position], Toast.LENGTH_SHORT)
.show();
Toast.makeText(getApplicationContext(),
"image[] = " + image[position], Toast.LENGTH_SHORT)
.show();
Bitmap bitmap = BitmapFactory.decodeResource(
getResources(), image[position]);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] b = baos.toByteArray();
System.out.println("imagesssss" + b);
Intent intent = new Intent(AllBreeds.this,
BreedDescription.class);
intent.putExtra("picture", b);
startActivity(intent);
// finish();
} else {
Toast.makeText(getApplicationContext(),
"text_sort = " + text_sort.get(position),
Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(),
"image_sort = " + image_sort.get(position),
Toast.LENGTH_SHORT).show();
Bitmap bitmap = BitmapFactory.decodeResource(
getResources(), image_sort.get(position));
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] b = baos.toByteArray();
System.out.println("imagesssss" + b);
Intent intent = new Intent(AllBreeds.this,
BreedDescription.class);
intent.putExtra("picture", b);
startActivity(intent);
// finish();
}
}
});
}
class MyCustomAdapter extends BaseAdapter {
String[] data_text;
int[] data_image;
Boolean status;
int count = 0;
int len;
private SparseBooleanArray mCheckStates;
private SparseBooleanArray mFilter;
ViewHolder holder = null;
private class ViewHolder {
ImageView imageview;
TextView textview;
CheckBox chkbox;
Button btn_fav;
}
MyCustomAdapter() {
}
MyCustomAdapter(String[] text, int[] image) {
data_text = text;
data_image = image;
mCheckStates = new SparseBooleanArray(data_text.length);
mFilter = new SparseBooleanArray(text_sort.size());
}
MyCustomAdapter(ArrayList<String> text, ArrayList<Integer> image) {
data_text = new String[text.size()];
data_image = new int[image.size()];
for (int i = 0; i < text.size(); i++) {
data_text[i] = text.get(i);
data_image[i] = image.get(i);
}
}
public int getCount() {
return data_text.length;
}
public String getItem(int position) {
return null;
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView,
ViewGroup parent) {
if (convertView == null) {
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(R.layout.listview, null);
holder = new ViewHolder();
}
holder.textview = (TextView) convertView
.findViewById(R.id.TextView01);
holder.imageview = (ImageView) convertView
.findViewById(R.id.ImageView01);
holder.chkbox = (CheckBox) convertView.findViewById(R.id.checkBox1);
holder.textview.setText(data_text[position]);
holder.imageview.setImageResource(data_image[position]);
holder.btn_fav.setTag(position);
holder.chkbox.setTag(position);
System.out.println("Example 3...");
// weired way, but works anyway
for (Object key : map.keySet()) {
System.out.println("Key : " + key.toString() + " Value : "
+ map.get(key));
}
for (HashMap<String, String> map2 : mylist) {
String Values = "", Query, Keys = "";
int count = 0, count1 = 0;
for (Entry<String, String> mapEntry : map2.entrySet()) {
String key = mapEntry.getKey();
String value = mapEntry.getValue();
System.out
.println("iterator key: " + key + "value: " + value);
}
if (filter_flag == 0) {
mCheckStates = new SparseBooleanArray(data_text.length);
holder.chkbox.setChecked(mCheckStates.get(position, false));
} else {
mFilter = new SparseBooleanArray(text_sort.size());
holder.chkbox.setChecked(mFilter.get(position, false));
}
holder.chkbox.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// System.out.println("\n inside onCheckedChanged: ");
CheckBox cb = (CheckBox) v;
if (cb.isChecked() == true) {
// System.out.println("inside isChecked true");
// System.out.println("count= " + count);
if (count >= 2) {
// checked false (UnChecked)
// System.out.println("inside count>2: " + count);
cb.setChecked(false);
// String msg = "Please select only two cars!";
// showCustomToast(msg);
Toast.makeText(getApplicationContext(),
"Please select only two pet!",
Toast.LENGTH_LONG).show();
// Toast.makeText(getApplicationContext(),
// "Please select only two cars!",
// Toast.LENGTH_LONG).show();
} else {
count++;
// System.out.println("inside else: " + count);
// cb.setChecked(true);
if (filter_flag == 0) {
cb.setChecked(true);
mCheckStates.put((Integer) cb.getTag(), true);
} else {
cb.setChecked(true);
mFilter.put((Integer) cb.getTag(), true);
}
// mCheckStates.put((Integer) cb.getTag(), true);
}
} else {
// checked false (UnChecked)
// System.out.println("inside isChecked false" + count);
// cb.setChecked(false);
if (filter_flag == 0) {
cb.setChecked(false);
mCheckStates.put((Integer) cb.getTag(), false);
} else {
cb.setChecked(false);
mFilter.put((Integer) cb.getTag(), false);
}
// mCheckStates.put((Integer) cb.getTag(), false);
count--;
}
int cntr = count;
Toast.makeText(getApplicationContext(), "pet id===" + cntr,
Toast.LENGTH_LONG).show();
}
});
holder.btn_fav.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Button b1 = (Button) v;
status = favourites.get(position, false);
// Boolean online = isOnline();
if (status == true) {
holder.btn_fav
.setBackgroundResource(R.drawable.starfill);
} else {
holder.btn_fav
.setBackgroundResource(R.drawable.starblank);
}
Toast.makeText(getApplicationContext(),
"star id===" + status, Toast.LENGTH_SHORT).show();
}
});
return (convertView);
}
}