安卓立即自动完成 [英] Android Immediate Auto Complete

问题描述

您好！

Android的自动完成功能只有启动后两个字母，我怎样才能使它所以当现场只是选择列表中出现？

The android auto complete only starts after two letters, how can I make it so the list appears when the field is just selected?

感谢

推荐答案

延长AutoCompleteTextView，覆盖enoughToFilter（）方法和阈值方法，所以它不会与1阈值替换0阈值：

Extend the AutoCompleteTextView, overriding the enoughToFilter() methods and the threshold methods so that it doesn't replace the 0 threshold with a 1 threshold:

public class MyAutoCompleteTextView extends AutoCompleteTextView {

    private int myThreshold;

    public MyAutoCompleteTextView(Context context) {
        super(context);
    }

    public MyAutoCompleteTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public MyAutoCompleteTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public void setThreshold(int threshold) {
        if (threshold < 0) {
            threshold = 0;
        }
        myThreshold = threshold;
    }

    @Override
    public boolean enoughToFilter() {
        return getText().length() >= myThreshold;
    }

    @Override
    public int getThreshold() {
        return myThreshold;
    }

}

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