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1. import java.io.File;
2. import java.util.*;
3. import android.app.Activity;
4. import android.content.Context;
5. import android.os.*;
6. import android.view.*;
7. import android.widget.*;
8. import android.widget.AdapterView.OnItemClickListener;
9. import android.widget.ImageView.ScaleType;
10. public class FileBrowser extends Activity {
11. private ListView mainListView=null;
12. private List<Map<String,Object>> list=null;
13. public void onCreate(Bundle savedInstanceState) {
14. super.onCreate(savedInstanceState);
15. this.setTitle("文件浏览器");
16. mainListView=new ListView(this);
17. setContentView(mainListView);
18. File file=Environment.getRootDirectory();
19. String pathx=file.getAbsolutePath();
20. this.setTitle(pathx);
21. //android的总目录就是"/"
22. list_init("/");
23. }
24. void list_init(String path){
25. File file=new File(path);
26. File[] fileList=file.listFiles();
27. list=new ArrayList<Map<String,Object>>();
28. Map<String,Object> item;
29. item=new HashMap<String,Object>();
30. if(path.equals("/")){
31. item.put("ico",R.drawable.home);
32. item.put("name","总目录列表");
33. item.put("path","/");
34. list.add(item);
35. }else{
36. item.put("ico",R.drawable.back);
37. item.put("name","返回上一级");
38. item.put("path",file.getParent());
39. list.add(item);
40. }
41. for(int i=0;i<fileList.length;i++){
42. item=new HashMap<String,Object>();
43. if(fileList[i].isDirectory()){
44. if(fileList[i].list().length<1){
45. item.put("ico",R.drawable.file1);
46. }else{
47. item.put("ico",R.drawable.file2);
48. }
49. }else{
50. item.put("ico",R.drawable.content);
51. }
52. item.put("name",fileList[i].getName());
53. item.put("path",fileList[i].getAbsolutePath());
54. list.add(item);
55. }
56. MyAdapter ma=new MyAdapter(this,list);
57. //mainListView=new ListView(this);
58. mainListView.setAdapter(ma);
59. mainListView.setOnItemClickListener(new OnItemClickListener(){
60. public void onItemClick(AdapterView<?> arg0, View arg1,int arg2, long arg3) {
61. if(arg2>0 && (Integer)(list.get(arg2).get("ico"))==R.drawable.content){
62. //非文件夹图标，点击无效
63. }else{
64. //打开下一级文件目录列表
65. list_init((String)(list.get(arg2).get("path")));
66. }
67. }
68. });
69. this.setTitle(path);
70. }
71. public class MyAdapter extends BaseAdapter{
72. Context context=null;
73. List<Map<String,Object>> list=null;
74. MyAdapter(Context context,List<Map<String,Object>> list){
75. this.context=context;
76. this.list=list;
77. }
78. public int getCount() {return list.size();}
79. public Object getItem(int position) {return position;}
80. public long getItemId(int position) {return position;}
81. public View getView(int position, View convertView, ViewGroup parent) {
82. LinearLayout returnView=new LinearLayout(context);
83. returnView.setLayoutParams(new ListView.LayoutParams(-1,-2));//注意:ListView.LayoutParams
84. //图标
85. ImageView iv=new ImageView(context);
86. LinearLayout.LayoutParams lp_iv=new LinearLayout.LayoutParams(-2,-2);
87. lp_iv.rightMargin=10;
88. iv.setLayoutParams(lp_iv);
89. iv.setScaleType(ScaleType.CENTER_INSIDE);
90. iv.setImageResource((Integer)((list.get(position)).get("ico")));
91. returnView.addView(iv);
92. //文件名
93. TextView name=new TextView(context);
94. LinearLayout.LayoutParams lp_tv=new LinearLayout.LayoutParams(-2,-2);
95. name.setLayoutParams(lp_tv);
96. name.setTextSize(name.getTextSize()+10);
97. name.setText((String)(list.get(position).get("name")));
98. returnView.addView(name);
99. //
100. return returnView;
101. }
102. }
103. }