android 搜索框背景图片 android搜索引擎

1 package com.turboradio.googlesdk;
 2 
 3 import java.io.File;
 4 
 5 import android.app.Activity;
 6 import android.os.Bundle;
 7 import android.view.View;
 8 import android.widget.EditText;
 9 import android.widget.TextView;
10 
11 public class Ex_4_11 extends Activity {
12     private EditText mKeyword;
13     private TextView mResult;
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.ex_4_11);
18         mKeyword = (EditText)findViewById(R.id.et);
19         mResult =(TextView) findViewById(R.id.text2);
20         
21     }
22     /**
23      *  添加按钮监听
24 */
25     public void searchListener(View v){
26         /**获取输入的关键字**/
27         String keyword = mKeyword.getText().toString();
28         if(mKeyword.equals("")){
29             mResult.setText("请勿输入空白的关键字!!");
30         }else{
31             mResult.setText(searchFile(keyword));
32         }
33     }
34     /**搜索文件Method**/
35     private String searchFile(String keyword){
36         String result = "";
37         File [] files = new File("/").listFiles();
38         for(File f : files){
39             if(f.getName().indexOf(keyword) == 0){
40                 result += f.getPath()+"\n";
41             }
42         }
43         if(result.equals(""))
44             result = "找不到文件!!";
45         return result;
46     }
47 }

ex_4_11.xml

1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="fill_parent"
 4     android:layout_height="fill_parent"
 5      >
 6      <TextView 
 7          android:id="@+id/text1"
 8          android:layout_width="wrap_content"
 9          android:layout_height="wrap_content"
10          android:text="输入关键字:"
11          android:paddingTop="10dip"
12          />
13      <EditText 
14          android:id="@+id/et"
15          android:layout_width="match_parent"
16          android:layout_height="wrap_content"
17          android:layout_toRightOf="@id/text1"
18          android:layout_alignTop="@id/text1"
19          />
20      <Button 
21          android:id="@+id/button"
22          android:layout_width="wrap_content"
23          android:layout_height="wrap_content"
24          android:text="搜索"
25          android:layout_below="@id/et"
26          android:layout_alignLeft="@id/et"
27          android:onClick="searchListener"
28          />
29      <TextView 
30          android:id="@+id/text2"
31          android:layout_width="fill_parent"
32          android:layout_height="wrap_content"
33          android:layout_below="@id/button"
34          android:layout_alignParentLeft="true"
35          />
36 </RelativeLayout>