5.2 Android Basic QuickStart Widgets&Other View Auto Complete

Auto Complete

本演练创建一个自动完成控件，使用AutocompleteTextView控件。

• 新建项目 HelloAutoComplete。
• 在res/layout/目录下创建lsit_item.xml，按如下代码编辑。

  <?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>

  3. res/layout/mai.xml文件插入下面的内容。

  <?xml version="1.0" encoding="utf-8"?>

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

  android:orientation="vertical"

  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>

  4. 打开HelloAutocomplete.java插入如下代码到onCreate()方法。

  @Override

  public 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);

  }

  5. 增加字符串数组。

  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" };

  6. 运行程序。

  

     

  我们可以将提示的字符串信息放到string.xml文件中,而不用硬编码。

  <string-array name="countries_array">

  <item>巴黎</item>

  <item>巴西</item>

  <item>巴塞罗那</item>

  <item>巴布尔</item>

  </string-array>

     

  在程序中加载

  String[]countries = getResources().getStringArray(R.array.countries_array);

  ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.list_item,countries);

     

  author: im@xingquan.org