您好,登錄后才能下訂單哦!
本文實例講述了Android編程自定義搜索框實現方法。分享給大家供大家參考,具體如下:
先來看效果圖吧~
分析:這只是模擬了一個靜態數據的刪除與顯示
用EditText+PopupWindow+listView實現的
步驟:
1.先寫出搜索框來-activity_mian布局:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <EditText android:id="@+id/et" android:layout_width="match_parent" android:layout_height="wrap_content" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/click" android:layout_alignParentRight="true" android:src="@drawable/down_arrow"/> </RelativeLayout>
效果:
2.數據的加載,把數據寫在ArrayList數組中,然后用適配器加載出來~
data=new ArrayList<String>(); for(int i=0;i<20;i++){ data.add("1000"+i); } list.setAdapter(new MyAdapter());
3.點擊箭頭出現數據,在EditText搜索框下面出現,用PopupWindow實現~
@Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.click: //if(popup==null){ /*TextView tv=new TextView(this); tv.setText("123243");*/ list.setAdapter(new MyAdapter()); popup=new PopupWindow(list, et.getWidth(), 500); popup.setFocusable(true); //點擊屏幕以外的區域會關掉 popup.setOutsideTouchable(true); popup.setBackgroundDrawable(new ColorDrawable()); //顯示在哪個控件的下面 popup.showAsDropDown(et); // }else{ // popup=null; //} break; default: break; } }
4.listview適配器加載數據并且點擊清除數據的圖片,數據會消失:
class MyAdapter extends BaseAdapter{ @Override public int getCount() { // TODO Auto-generated method stub if(data!=null){ return data.size(); }else { return 0; } } @Override public Object getItem(int position) { // TODO Auto-generated method stub return null; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub View view=View.inflate(MainActivity.this, R.layout.listview, null); TextView tv=(TextView) view.findViewById(R.id.tv); ImageView iv=(ImageView) view.findViewById(R.id.iv); text=data.get(position); tv.setText(text); iv.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub data.remove(text); notifyDataSetChanged(); } }); return view; } }
5.listview的點擊,PopupWindow的消失,EditText數據的顯示:
list.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // TODO Auto-generated method stub et.setText(text); et.setSelection(text.length());//光標在text的后面 //PopupWindow消失 popup.dismiss(); } });
這樣就實現了自定義搜索框~
完整MainActivity:
public class MainActivity extends Activity implements OnClickListener{ private ImageView click; private EditText et; private PopupWindow popup; ListView list; List<String>data; String text; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); et=(EditText) findViewById(R.id.et); click=(ImageView) findViewById(R.id.click); click.setOnClickListener(this); list=new ListView(this); list.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // TODO Auto-generated method stub et.setText(text); et.setSelection(text.length());//光標在text的后面 //PopupWindow消失 popup.dismiss(); } }); data=new ArrayList<String>(); for(int i=0;i<20;i++){ data.add("1000"+i); } } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.click: //if(popup==null){ /*TextView tv=new TextView(this); tv.setText("123243");*/ list.setAdapter(new MyAdapter()); popup=new PopupWindow(list, et.getWidth(), 500); popup.setFocusable(true); //點擊屏幕以外的區域會關掉 popup.setOutsideTouchable(true); popup.setBackgroundDrawable(new ColorDrawable()); //顯示在哪個控件的下面 popup.showAsDropDown(et); // }else{ // popup=null; //} break; default: break; } } class MyAdapter extends BaseAdapter{ @Override public int getCount() { // TODO Auto-generated method stub if(data!=null){ return data.size(); }else { return 0; } } @Override public Object getItem(int position) { // TODO Auto-generated method stub return null; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub View view=View.inflate(MainActivity.this, R.layout.listview, null); TextView tv=(TextView) view.findViewById(R.id.tv); ImageView iv=(ImageView) view.findViewById(R.id.iv); text=data.get(position); tv.setText(text); iv.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub data.remove(text); notifyDataSetChanged(); } }); return view; } } }
listview布局:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/user"/> <TextView android:id="@+id/tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="100dp"/> <ImageView android:id="@+id/iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:src="@drawable/delete"/> </RelativeLayout>
附:完整實例代碼點擊此處本站下載。
更多關于Android相關內容感興趣的讀者可查看本站專題:《Android開發入門與進階教程》、《Android調試技巧與常見問題解決方法匯總》、《Android基本組件用法總結》、《Android視圖View技巧總結》、《Android布局layout技巧總結》及《Android控件用法總結》
希望本文所述對大家Android程序設計有所幫助。
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。