初识AutoCompleteTextView和MultiAutoCompleteTextView

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大家都会遇到需要edittext输入显示历史记录的需求 
这里 这个控件就很好的解决的
private static final String[] COUNTRIES ={        "Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra",        "Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium",        "Cote d'Ivoire", "Cambodia", "Cameroon", "Canada", "Cape Verde",        "Democratic Republic of the Congo", "Denmark", "Djibouti", "Dominica",        "East Timor", "啊", "Egypt", "El Salvador", "Equatorial Guinea",};

 AutoCompleteTextView textView = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView);ArrayAdapter<String> adapter =new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,COUNTRIES);textView.setAdapter(adapter);textView.setThreshold(1);textView.dismissDropDown();MultiAutoCompleteTextView multi=(MultiAutoCompleteTextView)findViewById(R.id.multi);multi.setAdapter(adapter);multi.setThreshold(1);//用户必须提供一个MultiAutoCompleteTextView.Tokenizer用来区分不同的子串。multi.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());


这样就可以了

其中
multi.setThreshold(1);这个方法很关键
默认是两位
所以你如果没设置 的话会出现输入一个不显示的情况

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