本文实例为大家分享了Android自定义输入框提示的具体代码，供大家参考，具体内容如下

这是系统提供的一个控件：AutoCompleteTextView

<AutoCompleteTextView android:layout_marginLeft="20dp" android:id="@+id/name_edit" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="6" android:completionThreshold="1" android:textSize="15sp" android:maxLength="10" android:singleLine="true" android:paddingBottom="4dp" android:background="@null" android:hint="请输入姓名"/>

但是我们想在item的布局中加入其他东西怎么办？这样我们只能自己定义适配器，首先先看看AutoCompleteTextView需要的适配器的类型

查看AutoCompleteTextView的setAdapter（）方法的源码如下：

public <T extends ListAdapter & Filterable> void setAdapter(T adapter) { if (mObserver == null) { mObserver = new PopupDataSetObserver(this); } else if (mAdapter != null) { mAdapter.unregisterDataSetObserver(mObserver); } mAdapter = adapter; if (mAdapter != null) { //noinspection unchecked mFilter = ((Filterable) mAdapter).getFilter(); adapter.registerDataSetObserver(mObserver); } else { mFilter = null; } mPopup.setAdapter(mAdapter);}

自定义适配器核心代码：

private PoiKeyTipListAdapter poiKeyTipListAdapter;poiKeyTipListAdapter = new PoiKeyTipListAdapter(this); nameEdit.setAdapter(poiKeyTipListAdapter); nameEdit.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { if(nameEdit.getText().toString().length()>1){ //根据实际操作请求数据 } } @Override public void afterTextChanged(Editable s) { } });public class PoiKeyTipListAdapter extends BaseAdapter implements Filterable { private List<SendNameBean.DataBean> stringArrayList ; private Context context; private OnDataChangedListener changedListener; public PoiKeyTipListAdapter(Context context) { this.context = context; } public void setData(List<SendNameBean.DataBean> stringArrayList){ this.stringArrayList = stringArrayList; notifyDataSetChanged(); } @Override public int getCount() { return stringArrayList == null ? 0 : stringArrayList.size(); } @Override public Object getItem(int position) { return stringArrayList == null ? null : stringArrayList.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(final int position, View convertView, ViewGroup parent) { ViewHolder viewHolder; if (convertView == null){ convertView = LayoutInflater.from(context).inflate(R.layout.item_input_tip_layout,parent,false); viewHolder = new ViewHolder(); viewHolder.item_txt_tip = (TextView) convertView.findViewById(R.id.item_txt_tip); viewHolder.name = (TextView) convertView.findViewById(R.id.name); viewHolder.phone = (TextView) convertView.findViewById(R.id.phone); convertView.setTag(viewHolder); }else { viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.item_txt_tip.setText(stringArrayList.get(position).getProvinceName()+stringArrayList.get(position).getCityName()+stringArrayList.get(position).getCountyName()+stringArrayList.get(position).getTownName()+stringArrayList.get(position).getAddress()); viewHolder.name.setText(stringArrayList.get(position).getName()); viewHolder.phone.setText(stringArrayList.get(position).getPhone()); convertView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (changedListener != null) { changedListener.dataChangedListener(stringArrayList.get(position)); } } }); return convertView; } static class ViewHolder{ private TextView item_txt_tip ; private TextView name ; private TextView phone ; } @Override public Filter getFilter() { Filter filter=new Filter() { @Override protected FilterResults performFiltering(CharSequence constraint) { FilterResults results = new FilterResults(); ArrayList<SendNameBean.DataBean> newData = new ArrayList<>(); if(stringArrayList!=null && stringArrayList.size()!=0){ newData.addAll(stringArrayList); } results.values = newData; results.count = newData.size(); return results; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { stringArrayList = (ArrayList)results.values; notifyDataSetChanged(); } }; return filter; } public interface OnDataChangedListener{ void dataChangedListener(SendNameBean.DataBean dataBean); } public void setOnDataChangedListener(OnDataChangedListener changedListener){ this.changedListener = changedListener; }}

效果图

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。