如何更换MultiAutoCompleteTextView下拉列表 [英] How to replace MultiAutoCompleteTextView drop down list
本文介绍了如何更换MultiAutoCompleteTextView下拉列表的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图取代MultiAutoCompleteTextView下拉列表中有一个ListView，它应该具有相同的功能下拉列表中，这意味着，当我点击的项目，应等加入到MultiAutoCompleteTextView中，邻之一，但是当你键入过滤的ListView。
I'm trying to replace MultiAutoCompleteTextView Drop down list with a ListView, which it should have same functionality as drop down list, that means, when I click in one of items it should be added to MultiAutoCompleteTextView box, o so on, but filtering the ListView as you type.
于是我想出了没有成功这个原始code：
So I came up with this raw code without success:
filterable_listview.xml
filterable_listview.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical">
<MultiAutoCompleteTextView
android:layout_height="wrap_content" android:layout_width="fill_parent"
android:hint="@string/To" android:id="@+id/search_box"></MultiAutoCompleteTextView>
<ListView android:id="@android:id/list" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_weight="1"/>
</LinearLayout>
AutoCompleteActivity.java
AutoCompleteActivity.java
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.filterable_listview);
manager = new ContactManager();
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, manager.getContacts());
searchEdit = (MultiAutoCompleteTextView) findViewById(R.id.search_box);
searchEdit.addTextChangedListener(filterTextWatcher);
searchEdit.setTokenizer(new SpaceTokenizer());
setListAdapter(adapter);
getListView().setOnItemClickListener(
new ListView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
//Here is one issues
searchEdit.append(adapter.getItem(position));
}
});
}
private TextWatcher filterTextWatcher = 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) {
adapter.getFilter().filter(s);
}
};
我来主要问题：
I have to main problems:
1）当我点击一个项目，整个选定的文本被追加， 我知道这个问题依赖于：
1) When I click an item, the whole selected text is appended, I know the problem relies on:
searchEdit.append（adapter.getItem（位置））;
searchEdit.append(adapter.getItem(position));
但是，像普通自动完成我该怎么办跨越的文字呢？
but, How can I do spanning text like regular autocomplete does ?
2）一旦一个项目被选定，下一输入的不显示的建议的话（尽管SpaceTonekizer的）
2) Once one item was selected, next input don't show the suggestion any more (despite of SpaceTonekizer)
我希望我的解释是明确的。
I hope my explanation was clear.
在此先感谢
推荐答案
如果有人需要做这样的事情，我需要，我发这个
If someone need to do something like I needed, I made this
private MultiAutoCompleteTextView searchEdit;
private ArrayAdapter<String> adapter = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_dropdown_item_1line, manager
.getContacts());
setListAdapter(adapter);
searchEdit = (MultiAutoCompleteTextView) findViewById(R.id.search_box);
searchEdit.addTextChangedListener(filterTextWatcher);
searchEdit.setTokenizer(new SpaceTokenizer());
searchEdit.setAdapter(adapter);
searchEdit.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
String t = ((TextView) v).getText().toString();
String f = searchEdit.getText().toString();
int s = searchEdit.getSelectionStart();
int i = s;
while (i > 0 && f.charAt(i - 1) != ' ') {
i--;
}
adapter.getFilter().filter(t.substring(i, s));
}
});
okButton = (Button) findViewById(R.id.ok);
okButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Bundle stats = new Bundle();
stats.putString("ConversationName", searchEdit.getText()
.toString());
Intent i = new Intent();
i.putExtras(stats);
setResult(RESULT_OK, i);
finish();
}
});
searchEdit.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT
|| keyCode == KeyEvent.KEYCODE_DPAD_RIGHT
|| keyCode == KeyEvent.KEYCODE_DPAD_UP
|| keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
String t = ((TextView) v).getText().toString();
String f = searchEdit.getText().toString();
int s = searchEdit.getSelectionStart();
int i = s;
while (i > 0 && f.charAt(i - 1) != ' ') {
i--;
}
adapter.getFilter().filter(t.substring(i, s));
return false;
}
return false;
}
});
getListView().setOnItemClickListener(
new ListView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String t = adapter.getItem(position);
String f = searchEdit.getText().toString();
int s = searchEdit.getSelectionStart();
int i = s;
while (i > 0 && f.charAt(i - 1) != ' ') {
i--;
}
searchEdit.getText().insert(s, t.substring(s - i));
}
});
}
@Override
protected void onDestroy() {
super.onDestroy();
searchEdit.removeTextChangedListener(filterTextWatcher);
}
private TextWatcher filterTextWatcher = new TextWatcher() {
public void afterTextChanged(Editable s) {
okButton.setEnabled(searchEdit.getText().toString().trim()
.length() > 0);
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
adapter.getFilter().filter(s);
}
};
public class SpaceTokenizer implements Tokenizer {
public int findTokenStart(CharSequence text, int cursor) {
int i = cursor;
while (i > 0 && text.charAt(i - 1) != ' ') {
i--;
}
while (i < cursor && text.charAt(i) == ' ') {
i++;
}
return i;
}
public int findTokenEnd(CharSequence text, int cursor) {
int i = cursor;
int len = text.length();
while (i < len) {
if (text.charAt(i) == ' ') {
return i;
} else {
i++;
}
}
return len;
}
public CharSequence terminateToken(CharSequence text) {
int i = text.length();
while (i > 0 && text.charAt(i - 1) == ' ') {
i--;
}
if (i > 0 && text.charAt(i - 1) == ' ') {
return text;
} else {
if (text instanceof Spanned) {
SpannableString sp = new SpannableString(text + " ");
TextUtils.copySpansFrom((Spanned) text, 0, text.length(),
Object.class, sp, 0);
return sp;
} else {
return text + " ";
}
}
}
}
在XML看起来是这样的：
The xml looks like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical"
android:drawingCacheQuality="high">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:orientation="horizontal">
<MultiAutoCompleteTextView
android:layout_marginLeft="1dip"
android:layout_marginTop="1dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_width="fill_parent"
android:dropDownHeight="0px"
android:hint="@string/To"
android:id="@+id/search_box"
></MultiAutoCompleteTextView>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ok"
android:id="@+id/ok"
android:enabled="false"
/>
</LinearLayout>
<ListView android:id="@android:id/list" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_weight="1" />
</LinearLayout>
希望这有助于
Hope this help
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