Android quick search mobile phone file Engine

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 * Add button listening
24 */
25 public void searchListener (View v ){
26/** get the entered keyword **/
27 String keyword = mKeyword. getText (). toString ();
28 if (mKeyword. equals ("")){
29 mResult. setText ("do not enter blank keywords !! ");
30} else {
31 mResult. setText (searchFile (keyword ));
32}
33}
34/** search file 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 = "file not found !! ";
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 = "input Keyword :"
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 = "Search"
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>