android AutoCompleteTextView 自定义BaseAdapter

朴灿烈づ我的快乐病毒、 2023-10-16 19:37 6阅读 0赞

最近项目中需要做搜索功能，实现类似 Google、Baidu 搜索的 下拉提示效果。android为我们提供了 AutoCompleteTextView 控件来完成此功能。

网上好多例子都是简单使用 ArrayAdapter 来实现的，界面比较简单，实际项目中用处不大；自己研究了一番，自定义Adapter 继承BaseAdapter 并**实现Filterable 接口** 实现了上述功能。

效果截图：

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相关源代码：

package com.activity.gdbk;
    
    import java.util.ArrayList;
    import java.util.Calendar;
    import java.util.List;
    
    import com.activity.gdbk.PageActivity.PageAdapter;
    import com.gdbk.dao.Bank;
    
    import android.app.Activity;
    import android.app.DatePickerDialog;
    import android.app.Dialog;
    import android.content.Context;
    import android.content.Intent;
    import android.os.Bundle;
    import android.os.Handler;
    import android.os.Message;
    import android.os.Vibrator;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.Window;
    import android.view.WindowManager;
    import android.view.View.OnClickListener;
    import android.view.ViewGroup;
    import android.widget.AdapterView;
    import android.widget.AdapterView.OnItemClickListener;
    import android.widget.AdapterView.OnItemLongClickListener;
    import android.widget.AutoCompleteTextView;
    import android.widget.BaseAdapter;
    import android.widget.Button;
    import android.widget.DatePicker;
    import android.widget.EditText;
    import android.widget.Filter;
    import android.widget.Filterable;
    import android.widget.LinearLayout;
    import android.widget.ListView;
    import android.widget.TextView;
    
    //Android ListVew 点击item 显示隐匿菜单项
    public class ListActivity extends Activity implements OnItemClickListener,
    		OnItemLongClickListener {
    	// 自定义相关组件
    	private ListView listview;
    	private MyAdapter adapter;
    	// activity 数据源
    	private List<String> data;
    
    	// activity 标量
    	private int currentPosition = -1;
    	// activity 界面常量
    	private static final int DATE_DIALOG_ID = 1;
    	private static final int SHOW_DATAPICK = 0;
    	// 日期数据变量
    	private int mYear;
    	private int mMonth;
    	private int mDay;
    
    	// ListActivity 相关组件
    	private EditText time;// 查询时间
    	private AutoCompleteTextView address;
    
    	// 添加AutoComplements 适配器
    	public AutoAdapter autoadapter;
    	// 添加AutoComplements 数据源
    	List<Bank> banks = new ArrayList<Bank>();
    
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		// TODO Auto-generated method stub
    		super.onCreate(savedInstanceState);
    		// 全屏模式
    		this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
    				WindowManager.LayoutParams.FLAG_FULLSCREEN);
    		this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    		setContentView(R.layout.activity_listview);
    		initializeAdapter();
    		initView();
    		setData();
    	}
    
    	// 自定义相关方法
    	private void initView() {
    		// 组件实例化
    		listview = (ListView) findViewById(R.id.listview);
    		time = (EditText) findViewById(R.id.data);
    		address = (AutoCompleteTextView) findViewById(R.id.address);
    		address.setAdapter(autoadapter);
    		address.setThreshold(1); // 设置输入一个字符 提示，默认为2
    		// 设置相关监听事件
    		address.setOnItemClickListener(new OnItemClickListener() {
    			@Override
    			public void onItemClick(AdapterView<?> arg0, View view,
    					int position, long id) {
    				// TODO Auto-generated method stub
    				Bank pc = banks.get(position);
    				address.setText(pc.getBank_name());
    			}
    
    		});
    		// 默认日期
    		setDateTime();
    
    		// 设置相关监听事件
    		listview.setOnItemClickListener(this);
    		listview.setOnItemLongClickListener(this);
    
    		time.setOnClickListener(new DateButtonOnClickListener());
    	}
    
    	private void setDateTime() {
    		final Calendar c = Calendar.getInstance();
    		mYear = c.get(Calendar.YEAR);
    		mMonth = c.get(Calendar.MONTH);
    		mDay = c.get(Calendar.DAY_OF_MONTH);
    		updateDisplay();
    	}
    
    	// adapter初始化方法----initializeAdapter()
    	public void initializeAdapter() {
    
    		for (int i = 1; i <= 10; i++) {
    			Bank items = new Bank();
    			items.setBank_name("湖南省光大银行**支行" + i);
    			banks.add(items);
    		}
    		autoadapter = new AutoAdapter(ListActivity.this, banks);
    	}
    
    	/**
    	 * 更新日期
    	 */
    	private void updateDisplay() {
    		time.setText(new StringBuilder().append(mYear).append("--")
    				.append((mMonth + 1) < 10 ? "0" + (mMonth + 1) : (mMonth + 1))
    				.append("--").append((mDay < 10) ? "0" + mDay : mDay));
    	}
    
    	// 设置相关静态数据
    	private void setData() {
    		data = new ArrayList<String>();
    		for (int i = 0; i < 10; i++) {
    			data.add("员工姓名" + i);
    		}
    		if (adapter == null) {
    			adapter = new MyAdapter(this, data);
    			listview.setAdapter(adapter);
    		} else {
    			adapter.notifyDataSetChanged();
    		}
    	}
    
    	@Override
    	protected void onResume() {
    		updateNoteBookList();
    		super.onResume();
    	}
    
    	private void updateNoteBookList() {
    		if (adapter != null) {
    			setData();
    			adapter.notifyDataSetChanged();
    		}
    	}
    
    	// 覆写相关方法
    	@Override
    	public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
    			int position, long arg3) {
    		// TODO Auto-generated method stub
    		Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
    		vibrator.vibrate(40);
    		currentPosition = position;
    		adapter.notifyDataSetChanged();
    		return true;
    	}
    
    	@Override
    	public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
    		// TODO Auto-generated method stub
    		currentPosition = -1;
    		adapter.notifyDataSetChanged();
    	}
    
    	// 内部类---自定义适配器
    	public class MyAdapter extends BaseAdapter {
    		private Context context;
    		private LayoutInflater inflater;
    		private List<String> fileTypeList;
    
    		// 适配器构造函数
    		public MyAdapter(Context context, List<String> fileTypeList) {
    			this.context = context;
    			this.fileTypeList = fileTypeList;
    			inflater = LayoutInflater.from(context);
    		}
    
    		@Override
    		public int getCount() {
    			// TODO Auto-generated method stub
    			return fileTypeList.size();
    		}
    
    		@Override
    		public Object getItem(int arg0) {
    			// TODO Auto-generated method stub
    			return fileTypeList.get(arg0);
    		}
    
    		@Override
    		public long getItemId(int position) {
    			// TODO Auto-generated method stub
    			return position;
    		}
    
    		@Override
    		public View getView(int position, View convertView, ViewGroup parent) {
    			// TODO Auto-generated method stub
    			ViewHolder holder = null;
    			if (convertView == null) {
    				convertView = inflater.inflate(R.layout.listview_item, parent,
    						false);
    				holder = new ViewHolder();
    				holder.fileNameText = (TextView) convertView
    						.findViewById(R.id.item_name);
    				holder.fileTimeText = (TextView) convertView
    						.findViewById(R.id.item_time);
    				holder.fileSizeText = (TextView) convertView
    						.findViewById(R.id.item_pm);
    				holder.linearLayout = (LinearLayout) convertView
    						.findViewById(R.id.layout_other);
    				holder.openLinearLayout = (LinearLayout) convertView
    						.findViewById(R.id.item_open);
    				holder.editLinearLayout = (LinearLayout) convertView
    						.findViewById(R.id.item_edit);
    				holder.moveLinearLayout = (LinearLayout) convertView
    						.findViewById(R.id.item_move);
    				holder.deleteLinearLayout = (LinearLayout) convertView
    						.findViewById(R.id.item_delete);
    				convertView.setTag(holder);
    			} else {
    				holder = (ViewHolder) convertView.getTag();
    			}
    			// 填充相关数据信息
    			String strs = fileTypeList.get(position);
    			holder.fileNameText.setText(strs);
    			holder.fileTimeText.setText("");
    			holder.fileSizeText.setText("");
    
    			// item 显示隐藏菜单
    			if (position == currentPosition) {
    				holder.linearLayout.setVisibility(View.VISIBLE);
    				holder.openLinearLayout.setClickable(true);
    				holder.editLinearLayout.setClickable(true);
    				holder.moveLinearLayout.setClickable(true);
    				holder.deleteLinearLayout.setClickable(true);
    				holder.openLinearLayout
    						.setOnClickListener(new OnClickListener() {
    
    							@Override
    							public void onClick(View v) {
    								// 饼状图页面
    
    								Intent pie = new Intent(ListActivity.this,
    										PieActivity.class);
    								startActivity(pie);
    							}
    						});
    				holder.editLinearLayout
    						.setOnClickListener(new OnClickListener() {
    
    							@Override
    							public void onClick(View v) {
    								// TODO Auto-generated method stub
    								// 柱状图页面
    
    								Intent intent = new Intent(ListActivity.this,
    										BarActivity.class);
    								startActivity(intent);
    
    							}
    						});
    				holder.moveLinearLayout
    						.setOnClickListener(new OnClickListener() {
    
    							@Override
    							public void onClick(View v) {
    								// 散点图页面
    
    								Intent scatter = new Intent(ListActivity.this,
    										ScatterAtivity.class);
    								startActivity(scatter);
    
    							}
    						});
    				holder.deleteLinearLayout
    						.setOnClickListener(new OnClickListener() {
    
    							@Override
    							public void onClick(View v) {
    								// TODO Auto-generated method stub
    								// //折线图页面
    
    								Intent linear = new Intent(ListActivity.this,
    										LinearActivity.class);
    								startActivity(linear);
    
    							}
    						});
    			} else {
    				holder.linearLayout.setVisibility(View.GONE);
    				holder.openLinearLayout.setClickable(false);
    				holder.editLinearLayout.setClickable(false);
    				holder.moveLinearLayout.setClickable(false);
    				holder.deleteLinearLayout.setClickable(false);
    			}
    
    			return convertView;
    		}
    
    	}
    
    	// 内部类-----自定义组件
    
    	public class ViewHolder {
    		public TextView fileNameText;
    		public TextView fileTimeText;
    		public TextView fileSizeText;
    		public LinearLayout linearLayout;
    		public LinearLayout openLinearLayout;
    		public LinearLayout editLinearLayout;
    		public LinearLayout moveLinearLayout;
    		public LinearLayout deleteLinearLayout;
    
    	}
    
    	// 自定义 监听事件
    	/**
    	 * 选择日期Button的事件处理
    	 * 
    	 * @author Raul
    	 * 
    	 */
    
    	class DateButtonOnClickListener implements
    
    	android.view.View.OnClickListener {
    
    		@Override
    		public void onClick(View v) {
    
    			Message msg = new Message();
    
    			if (time.equals((EditText) v)) {
    
    				msg.what = ListActivity.SHOW_DATAPICK;
    
    			}
    
    			ListActivity.this.saleHandler.sendMessage(msg);
    
    		}
    
    	}
    
    	// ListActivity 主线程
    	/**
    	 * 处理日期控件的Handler
    	 */
    
    	Handler saleHandler = new Handler() {
    		@Override
    		public void handleMessage(Message msg) {
    			switch (msg.what) {
    			case ListActivity.SHOW_DATAPICK:
    				showDialog(DATE_DIALOG_ID);
    				break;
    			}
    		}
    	};
    
    	/**
    	 * 日期控件的事件
    	 */
    
    	private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {
    		public void onDateSet(DatePicker view, int year, int monthOfYear,
    				int dayOfMonth) {
    			mYear = year;
    			mMonth = monthOfYear;
    			mDay = dayOfMonth;
    			updateDisplay();
    
    		}
    
    	};
    
    	@Override
    	protected Dialog onCreateDialog(int id) {
    		switch (id) {
    		case DATE_DIALOG_ID:
    			return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
    					mDay);
    
    		}
    		return null;
    	}
    
    	@Override
    	protected void onPrepareDialog(int id, Dialog dialog) {
    		switch (id) {
    		case DATE_DIALOG_ID:
    			((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);
    			break;
    		}
    	}
    
    	// 自定义AutoComplement 文本的数据适配器
    	public class AutoAdapter extends BaseAdapter implements Filterable {
    		private Context autocontext;
    		private LayoutInflater autoinflater;
    		private List<Bank> autobanks;
    		private ArrayList<Bank> autobank;
    
    		// 自定义内部类
    		private ArrayFilter mFilter;
    
    		// AutoAdapter构造函数
    		public AutoAdapter(Context autocontext, List<Bank> autobanks) {
    			this.autocontext = autocontext;
    			this.autobanks = autobanks;
    			autoinflater = LayoutInflater.from(autocontext);
    
    		}
    
    		@Override
    		public int getCount() {
    			// TODO Auto-generated method stub
    			return autobanks.size();
    		}
    
    		@Override
    		public Object getItem(int position) {
    			// TODO Auto-generated method stub
    			return autobanks.get(position);
    		}
    
    		@Override
    		public long getItemId(int position) {
    			// TODO Auto-generated method stub
    			return position;
    		}
    
    		@Override
    		public View getView(int position, View convertView, ViewGroup parent) {
    			// TODO Auto-generated method stub
    			AutoViewHolder holder = null;
    			if (convertView == null) {
    				convertView = autoinflater.inflate(R.layout.listview_page_item,
    						parent, false);
    				holder = new AutoViewHolder();
    				holder.autotextview = (TextView) convertView
    						.findViewById(R.id.content);
    				convertView.setTag(holder);
    			} else {
    				holder = (AutoViewHolder) convertView.getTag();
    			}
    			holder.autotextview.setText(autobanks.get(position).getBank_name());
    			return convertView;
    		}
    
    		// AutoAdapter适配器 的拦截器
    		// AutoComplements 配置拦截器
    		private class ArrayFilter extends Filter {
    			@Override
    			protected FilterResults performFiltering(CharSequence prefix) {
    				// TODO Auto-generated method stub
    				FilterResults results = new FilterResults();
    				if (autobank == null) {
    					autobank = new ArrayList<Bank>(autobanks);
    				}
    
    				if (prefix == null || prefix.length() == 0) {
    					ArrayList<Bank> list = autobank;
    					results.values = list;
    					results.count = list.size();
    				} else {
    					String prefixString = prefix.toString().toLowerCase();
    					ArrayList<Bank> unfilteredValues = autobank;
    					int count = unfilteredValues.size();
    
    					ArrayList<Bank> newValues = new ArrayList<Bank>(count);
    
    					for (int i = 0; i < count; i++) {
    						Bank pc = unfilteredValues.get(i);
    						if (pc != null) {
    							if (pc.getBank_name() != null
    									&& pc.getBank_name().startsWith(
    											prefixString)) {
    								newValues.add(pc);
    							}
    						}
    					}
    
    					results.values = newValues;
    					results.count = newValues.size();
    
    				}
    
    				return results;
    			}
    
    			@Override
    			protected void publishResults(CharSequence constraint,
    					FilterResults results) {
    				// TODO Auto-generated method stub
    				autobanks = (List<Bank>) results.values;
    				if (results.count > 0) {
    					notifyDataSetChanged();
    				} else {
    					notifyDataSetInvalidated();
    				}
    
    			}
    
    		}
    
    		// 实现Filterable 接口需要覆写的相关方法
    		@Override
    		public Filter getFilter() {
    			// TODO Auto-generated method stub
    			if (mFilter == null) {
    				mFilter = new ArrayFilter();
    			}
    			return mFilter;
    
    		}
    
    	}
    
    	// 自定义AutoComplement的布局类文件
    	public class AutoViewHolder {
    		private TextView autotextview;
    	}
    
    }