01.package com.myapp;
02.
03.import java.io.File;
04.import java.io.IOException;
05.import android.os.Bundle;
06.import android.app.Activity;
07.import android.view.Menu;
08.import android.view.View;
09.import android.widget.Button;
10.import android.widget.EditText;
11.import android.widget.Toast;
12.
13.public class MainActivity extends Activity {
14.
15. @Override
16. public void onCreate(Bundle savedInstanceState) {
17. super.onCreate(savedInstanceState);
18. setContentView(R.layout.activity_main);
19.
20.
21. final EditText txtFilename = (EditText) findViewById(R.id.editText1);
22.
23.
24. final Button btn1 = (Button) findViewById(R.id.button1);
25.
26.
27. btn1.setOnClickListener(new View.OnClickListener() {
28. public void onClick(View v) {
29.
30.
31. try {
32.
33. String path = txtFilename.getText().toString();
34. File file = new File(path);
35.
36. if(file.exists())
37. {
38. file.delete();
39. }
40.
41. file = null;
42.
43.
44. Toast.makeText(MainActivity.this, "File Delete!",
45. Toast.LENGTH_LONG).show();
46.
47. } catch (IOException e) {
48.
49. e.printStackTrace();
50. Toast.makeText(MainActivity.this, "Failed! = " + e.getMessage() ,
51. Toast.LENGTH_LONG).show();
52. }
53.
54.
55. }
56. });
57.
58.
59.
60. }
61.
62. @Override
63. public boolean onCreateOptionsMenu(Menu menu) {
64. getMenuInflater().inflate(R.menu.activity_main, menu);
65. return true;
66. }
67.
68.}
ช่วยกันสนับสนุนรักษาเว็บไซต์ความรู้แห่งนี้ไว้ด้วยการสนับสนุน 
