MultiAutoCompleteTextView

An editable text view that shows completion suggestions automatically while the user is typing. The list of suggestions is displayed in a drop down menu from which the user can choose an item to replace the content of the edit box with.

簡單的講一個類似百度，google等輸入搜尋字串時自動提示的功能：

常用方法總結

Public Methods
<nobr><a href="http://developer.android.com/reference/android/widget/ListAdapter.html" style="color:rgb(0,102,153); text-decoration:none">ListAdapter</a></nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#getAdapter()" style="color:rgb(0,102,153); text-decoration:none">getAdapter</a></span>()</nobr> Returns a filterable list adapter used for auto completion.
<nobr><a href="http://developer.android.com/reference/android/widget/AdapterView.OnItemClickListener.html" style="color:rgb(0,102,153); text-decoration:none">AdapterView.OnItemClickListener</a></nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#getItemClickListener()" style="color:rgb(0,102,153); text-decoration:none">getItemClickListener</a></span>()</nobr> This method is deprecated. UsegetOnItemClickListener()intead
<nobr><a href="http://developer.android.com/reference/android/widget/AdapterView.OnItemSelectedListener.html" style="color:rgb(0,102,153); text-decoration:none">AdapterView.OnItemSelectedListener</a></nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#getItemSelectedListener()" style="color:rgb(0,102,153); text-decoration:none">getItemSelectedListener</a></span>()</nobr> This method is deprecated. UsegetOnItemSelectedListener()intead
<nobr><a href="http://developer.android.com/reference/android/widget/AdapterView.OnItemClickListener.html" style="color:rgb(0,102,153); text-decoration:none">AdapterView.OnItemClickListener</a></nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#getOnItemClickListener()" style="color:rgb(0,102,153); text-decoration:none">getOnItemClickListener</a></span>()</nobr> Returns the listener that is notified whenever the user clicks an item in the drop down list.
<nobr><a href="http://developer.android.com/reference/android/widget/AdapterView.OnItemSelectedListener.html" style="color:rgb(0,102,153); text-decoration:none">AdapterView.OnItemSelectedListener</a></nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#getOnItemSelectedListener()" style="color:rgb(0,102,153); text-decoration:none">getOnItemSelectedListener</a></span>()</nobr> Returns the listener that is notified whenever the user selects an item in the drop down list.
<nobr>int</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#getThreshold()" style="color:rgb(0,102,153); text-decoration:none">getThreshold</a></span>()</nobr> Returns the number of characters the user must type before the drop down list is shown.
<nobr><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.Validator.html" style="color:rgb(0,102,153); text-decoration:none">AutoCompleteTextView.Validator</a></nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#getValidator()" style="color:rgb(0,102,153); text-decoration:none">getValidator</a></span>()</nobr> Returns the Validator set withsetValidator(AutoCompleteTextView.Validator), ornullif it was not set.
<nobr>boolean</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#isPerformingCompletion()" style="color:rgb(0,102,153); text-decoration:none">isPerformingCompletion</a></span>()</nobr> Identifies whether the view is currently performing a text completion, so subclasses can decide whether to respond to text changed events.
<nobr>boolean</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#isPopupShowing()" style="color:rgb(0,102,153); text-decoration:none">isPopupShowing</a></span>()</nobr> Indicates whether the popup menu is showing.
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#onCommitCompletion(android.view.inputmethod.CompletionInfo)" style="color:rgb(0,102,153); text-decoration:none">onCommitCompletion</a></span>(<a href="http://developer.android.com/reference/android/view/inputmethod/CompletionInfo.html" style="color:rgb(0,102,153); text-decoration:none">CompletionInfo</a>completion)</nobr> Called by the framework in response to a text completion from the current input method, provided by it callingInputConnection.commitCompletion().
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#onFilterComplete(int)" style="color:rgb(0,102,153); text-decoration:none">onFilterComplete</a></span>(int count)</nobr> Notifies the end of a filtering operation.
<nobr>boolean</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#onKeyDown(int,%20android.view.KeyEvent)" style="color:rgb(0,102,153); text-decoration:none">onKeyDown</a></span>(int keyCode,<a href="http://developer.android.com/reference/android/view/KeyEvent.html" style="color:rgb(0,102,153); text-decoration:none">KeyEvent</a>event)</nobr> Default implementation ofKeyEvent.Callback.onKeyDown(): perform press of the view whenKEYCODE_DPAD_CENTERorKEYCODE_ENTERis released, if the view is enabled and clickable.
<nobr>boolean</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#onKeyUp(int,%20android.view.KeyEvent)" style="color:rgb(0,102,153); text-decoration:none">onKeyUp</a></span>(int keyCode,<a href="http://developer.android.com/reference/android/view/KeyEvent.html" style="color:rgb(0,102,153); text-decoration:none">KeyEvent</a>event)</nobr> Default implementation ofKeyEvent.Callback.onKeyUp(): perform clicking of the view whenKEYCODE_DPAD_CENTERorKEYCODE_ENTERis released.
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#onWindowFocusChanged(boolean)" style="color:rgb(0,102,153); text-decoration:none">onWindowFocusChanged</a></span>(boolean hasWindowFocus)</nobr> Called when the window containing this view gains or loses focus.
<nobr>&lt;Textends<a href="http://developer.android.com/reference/android/widget/ListAdapter.html" style="color:rgb(0,102,153); text-decoration:none">ListAdapter</a>&amp;<a href="http://developer.android.com/reference/android/widget/Filterable.html" style="color:rgb(0,102,153); text-decoration:none">Filterable</a>&gt; void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#setAdapter(T)" style="color:rgb(0,102,153); text-decoration:none">setAdapter</a></span>(T adapter)</nobr> Changes the list of data used for auto completion.
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#setCompletionHint(java.lang.CharSequence)" style="color:rgb(0,102,153); text-decoration:none">setCompletionHint</a></span>(<a href="http://developer.android.com/reference/java/lang/CharSequence.html" style="color:rgb(0,102,153); text-decoration:none">CharSequence</a>hint)</nobr> Sets the optional hint text that is displayed at the bottom of the the matching list.
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#setDropDownBackgroundResource(int)" style="color:rgb(0,102,153); text-decoration:none">setDropDownBackgroundResource</a></span>(int id)</nobr> Sets the background of the auto-complete drop-down list.
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#setOnClickListener(android.view.View.OnClickListener)" style="color:rgb(0,102,153); text-decoration:none">setOnClickListener</a></span>(<a href="http://developer.android.com/reference/android/view/View.OnClickListener.html" style="color:rgb(0,102,153); text-decoration:none">View.OnClickListener</a>listener)</nobr> Register a callback to be invoked when this view is clicked.
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#setOnItemClickListener(android.widget.AdapterView.OnItemClickListener)" style="color:rgb(0,102,153); text-decoration:none">setOnItemClickListener</a></span>(<a href="http://developer.android.com/reference/android/widget/AdapterView.OnItemClickListener.html" style="color:rgb(0,102,153); text-decoration:none">AdapterView.OnItemClickListener</a>l)</nobr> Sets the listener that will be notified when the user clicks an item in the drop down list.
<nobr>void</nobr>	<nobr><span class="sympad" style="margin-right:2px"><a href="http://developer.android.com/reference/android/widget/AutoCompleteTextView.html#setOnItemSelectedListener(android.widget.AdapterView.OnItemSelectedListener)" style="color:rgb(0,102,153); text-decoration:none">setOnItemSelectedListener</a></span>(<a href="http://developer.android.com/reference/android/widget/AdapterView.OnItemSelectedListener.html" style="color:rgb(0,102,153); text-decoration:none">AdapterView.OnItemSelectedListener</a>l)</nobr> Sets the listener that will be notified when the user selects an item in the drop down list.

下面是一個官方的示例：

To create a text entry widget that provides auto-complete suggestions, use theAutoCompleteTextViewwidget. Suggestions are received from a collection of strings associated with the widget through anArrayAdapter.

In this tutorial, you will create aAutoCompleteTextViewwidget that provides suggestions for a country name.

【0】Start a new project namedHelloAutoComplete.

【1】Create an XML file namedlist_item.xmland save it inside theres/layout/folder. Edit the file to look like this:

<?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dp" android:textSize="16sp" android:textColor="#000"> </TextView>
This file defines a simpleTextViewthat will be used for each item that appears in the list of suggestions.

這個檔案定義了一個簡單的TextView，用來即時顯示自動匹配的選項

【2】Open theres/layout/main.xmlfile and insert the following:

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:padding="5dp"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Country" /> <AutoCompleteTextView android:id="@+id/autocomplete_country" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="5dp"/> </LinearLayout>
TheTextViewis a label that introduces theAutoCompleteTextViewwidget.

【3】OpenHelloAutoComplete.javaand insert the following code for theonCreate()method:

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autocomplete_country); ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item, COUNTRIES); textView.setAdapter(adapter); }
After the content view is set to themain.xmllayout, theAutoCompleteTextViewwidget is captured from the layout withfindViewById(int). A newArrayAdapteris then initialized to bind thelist_item.xmllayout to each list item in theCOUNTRIESstring array (defined in the next step). Finally,setAdapter()is called to associate theArrayAdapterwith theAutoCompleteTextViewwidget so that the string array will populate the list of suggestions.

這裡new了一個ArrayAdapter用來作為adapter.

【4】Inside theHelloAutoCompleteclass, add the string array:

static final String[] COUNTRIES = new String[] { "Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra", "Angola", "Anguilla", "Antarctica", "Antigua and Barbuda", "Argentina", "Armenia", "Aruba", "Australia", "Austria", "Azerbaijan", "Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium", "Belize", "Benin", "Bermuda", "Bhutan", "Bolivia", "Bosnia and Herzegovina", "Botswana", "Bouvet Island", "Brazil", "British Indian Ocean Territory", "British Virgin Islands", "Brunei", "Bulgaria", "Burkina Faso", "Burundi", "Cote d'Ivoire", "Cambodia", "Cameroon", "Canada", "Cape Verde", "Cayman Islands", "Central African Republic", "Chad", "Chile", "China", "Christmas Island", "Cocos (Keeling) Islands", "Colombia", "Comoros", "Congo", "Cook Islands", "Costa Rica", "Croatia", "Cuba", "Cyprus", "Czech Republic", "Democratic Republic of the Congo", "Denmark", "Djibouti", "Dominica", "Dominican Republic", "East Timor", "Ecuador", "Egypt", "El Salvador", "Equatorial Guinea", "Eritrea", "Estonia", "Ethiopia", "Faeroe Islands", "Falkland Islands", "Fiji", "Finland", "Former Yugoslav Republic of Macedonia", "France", "French Guiana", "French Polynesia", "French Southern Territories", "Gabon", "Georgia", "Germany", "Ghana", "Gibraltar", "Greece", "Greenland", "Grenada", "Guadeloupe", "Guam", "Guatemala", "Guinea", "Guinea-Bissau", "Guyana", "Haiti", "Heard Island and McDonald Islands", "Honduras", "Hong Kong", "Hungary", "Iceland", "India", "Indonesia", "Iran", "Iraq", "Ireland", "Israel", "Italy", "Jamaica", "Japan", "Jordan", "Kazakhstan", "Kenya", "Kiribati", "Kuwait", "Kyrgyzstan", "Laos", "Latvia", "Lebanon", "Lesotho", "Liberia", "Libya", "Liechtenstein", "Lithuania", "Luxembourg", "Macau", "Madagascar", "Malawi", "Malaysia", "Maldives", "Mali", "Malta", "Marshall Islands", "Martinique", "Mauritania", "Mauritius", "Mayotte", "Mexico", "Micronesia", "Moldova", "Monaco", "Mongolia", "Montserrat", "Morocco", "Mozambique", "Myanmar", "Namibia", "Nauru", "Nepal", "Netherlands", "Netherlands Antilles", "New Caledonia", "New Zealand", "Nicaragua", "Niger", "Nigeria", "Niue", "Norfolk Island", "North Korea", "Northern Marianas", "Norway", "Oman", "Pakistan", "Palau", "Panama", "Papua New Guinea", "Paraguay", "Peru", "Philippines", "Pitcairn Islands", "Poland", "Portugal", "Puerto Rico", "Qatar", "Reunion", "Romania", "Russia", "Rwanda", "Sqo Tome and Principe", "Saint Helena", "Saint Kitts and Nevis", "Saint Lucia", "Saint Pierre and Miquelon", "Saint Vincent and the Grenadines", "Samoa", "San Marino", "Saudi Arabia", "Senegal", "Seychelles", "Sierra Leone", "Singapore", "Slovakia", "Slovenia", "Solomon Islands", "Somalia", "South Africa", "South Georgia and the South Sandwich Islands", "South Korea", "Spain", "Sri Lanka", "Sudan", "Suriname", "Svalbard and Jan Mayen", "Swaziland", "Sweden", "Switzerland", "Syria", "Taiwan", "Tajikistan", "Tanzania", "Thailand", "The Bahamas", "The Gambia", "Togo", "Tokelau", "Tonga", "Trinidad and Tobago", "Tunisia", "Turkey", "Turkmenistan", "Turks and Caicos Islands", "Tuvalu", "Virgin Islands", "Uganda", "Ukraine", "United Arab Emirates", "United Kingdom", "United States", "United States Minor Outlying Islands", "Uruguay", "Uzbekistan", "Vanuatu", "Vatican City", "Venezuela", "Vietnam", "Wallis and Futuna", "Western Sahara", "Yemen", "Yugoslavia", "Zambia", "Zimbabwe" };
This is the list of suggestions that will be provided in a drop-down list when the user types into theAutoCompleteTextViewwidget.

【5】Run the application.