自动完成文本视图不显示建议

Question

我已经实现了一个自动完成编辑文本，它确实显示了建议，但我也想实现不同的功能。

现在，我有一串国家/地区

private static final String[] COUNTRIES = new String[] {
    "Belgium", "France", "Italy", "Germany", "Spain"
};

我在我的适配器中调用它。现在，当我开始输入任何国家/地区名称时，我的编辑文本开始向我显示建议，但是

我想要的是：

假设我想在编辑文本中写 France 10 次，所以我希望我的自动完成编辑文本在我开始输入 France 时给我建议等等，

但我的编辑文本只给了我输入的第一个单词的建议。我怎样才能做到这一点，比如我的编辑文本如何为我输入的每个文本提供建议？

Answer 1

检查下面的代码，它会像你按下一个空格并输入一些东西一样，你会得到建议列表：

Xml 布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<MultiAutoCompleteTextView
    android:id="@+id/macTvInput"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />


</RelativeLayout>

代码：

public class MainActivity extends Activity {

private static final String[] COUNTRIES = new String[] { "Belgium",
        "France", "Italy", "Germany", "Spain" };

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_dropdown_item_1line, COUNTRIES);
    MultiAutoCompleteTextView macTvInput = (MultiAutoCompleteTextView) findViewById(R.id.macTvInput);
    macTvInput.setAdapter(adapter);
    macTvInput.setTokenizer(new SpaceTokenizer());
}

private class SpaceTokenizer implements Tokenizer {

            private final char delimiter = ' ';

    public int findTokenStart(CharSequence text, int cursor) {
        int i = cursor;

        while (i > 0 && text.charAt(i - 1) != delimiter) {
            i--;
        }
        while (i < cursor && text.charAt(i) == delimiter) {
            i++;
        }

        return i;
    }

    public int findTokenEnd(CharSequence text, int cursor) {
        int i = cursor;
        int len = text.length();

        while (i < len) {
            if (text.charAt(i) == delimiter) {
                return i;
            } else {
                i++;
            }
        }

        return len;
    }

    public CharSequence terminateToken(CharSequence text) {
        int i = text.length();
        while (i > 0 && text.charAt(i - 1) == delimiter) {
            i--;
        }

        return text;

    }

}
}

Answer 2

在你的布局中使用MultiAutoCompleteTextView，并实现这样的代码，这里我用commas分割

    String[] colors = getResources().getStringArray(R.array.AndroidDesk);

    adapter1 = new ArrayAdapter<String>(this,R.layout.suggestion_textview,colors);

    //autoComplete = (AutoCompleteTextView) findViewById(R.id.autoComplete);
    multiAutoComplete = (MultiAutoCompleteTextView) findViewById(R.id.editText1);

    // set adapter for the auto complete fields
//  autoComplete.setAdapter(adapter);
    multiAutoComplete.setAdapter(adapter1);

    // specify the minimum type of characters before drop-down list is shown
    //autoComplete.setThreshold(1);
    multiAutoComplete.setThreshold(2);
    // comma to separate the different colors
    multiAutoComplete.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());

Answer 3

使用 MultiAutoCompleteTextView 代替 AutoCompleteTextView

public class CountriesActivity extends Activity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.autocomplete_7);

         ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                 android.R.layout.simple_dropdown_item_1line, COUNTRIES);
         MultiAutoCompleteTextView textView = (MultiAutoCompleteTextView) findViewById(R.id.edit);
         textView.setAdapter(adapter);
         textView.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
     }

     private static final String[] COUNTRIES = new String[] {
         "Belgium", "France", "Italy", "Germany", "Spain"
     };
 }

来源：http://developer.android.com/reference/android/widget/MultiAutoCompleteTextView.html