自定义AutoCompleteView（类似于android中的facebook评论

Question

我想像这样自定义AutoCompleteView..

当我的特殊字符被添加时，它应该被填充（比如facebook...当你输入@b，那么所有名字以'b'开头的朋友都将被填充，我们可以选择名字）。

在添加“@”之前，不应在键入时填充它。

我必须自己试试，但让我在实现customview之前先问问，以节省时间。

Answer 1

您必须通过扩展类来自定义autocompleteview..和要更改的问题中提到的代码。

public class CustomAutoComplete extends AutoCompleteTextView {
private String previous = "";
private String seperator = "@";
boolean isState = false;

public CustomAutoComplete(final Context context, final AttributeSet attrs,
        final int defStyle) {
    super(context, attrs, defStyle);
    this.setThreshold(1);

}

public CustomAutoComplete(final Context context, final AttributeSet attrs) {
    super(context, attrs);
    this.setThreshold(1);
}

public CustomAutoComplete(final Context context) {
    super(context);
    this.setThreshold(1);
}

/**
 * This method filters out the existing text till the separator and launched
 * the filtering process again
 */
@Override
protected void performFiltering(final CharSequence text, final int keyCode) {
    String filterText = text.toString().trim();
    String lastchar = filterText.substring(filterText.length() - 1,
            filterText.length());
    if (filterText.length() == 1) {
        if (lastchar.equals(seperator)) {
            isState = true;
        } else {
            isState = false;
        }
    }
    previous = filterText.substring(0,
            filterText.lastIndexOf(getSeperator()) + 1);

    filterText = filterText.substring(filterText
            .lastIndexOf(getSeperator()) + 1);

    if ((lastchar.equals(seperator)) || isState) {
        super.performFiltering(filterText, keyCode);

        isState = true;

    }
}

/**
 * After a selection, capture the new value and append to the existing text
 */
@Override
protected void replaceText(final CharSequence text) {
    isState = false;
    super.replaceText(previous + text);// + getSeperator());

}

public String getSeperator() {
    return seperator;
}

public void setSeperator(final String seperator) {
    this.seperator = seperator;
}

}

希望这能帮到你...