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1 package net.bgreco;
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2
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3 import java.io.File;
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4 import java.util.ArrayList;
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5 import java.util.Collections;
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6
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7 import android.app.ListActivity;
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8 import android.content.Context;
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9 import android.content.Intent;
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10 import android.os.Bundle;
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11 import android.os.Environment;
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12 import android.view.View;
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13 import android.widget.AdapterView;
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14 import android.widget.AdapterView.OnItemClickListener;
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15 import android.widget.ArrayAdapter;
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16 import android.widget.Button;
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17 import android.widget.ListView;
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18 import android.widget.Toast;
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19
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20 public class DirectoryPicker extends ListActivity {
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21
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22 public static final String START_DIR = "startDir";
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23 public static final String ONLY_DIRS = "onlyDirs";
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24 public static final String SHOW_HIDDEN = "showHidden";
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25 public static final String CHOSEN_DIRECTORY = "chosenDir";
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26 public static final int PICK_DIRECTORY = 43522432;
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27 private File dir;
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28
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29 @Override
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30 public void onCreate(Bundle savedInstanceState) {
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31 super.onCreate(savedInstanceState);
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32 Bundle extras = getIntent().getExtras();
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33 dir = Environment.getExternalStorageDirectory();
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34 String preferredStartDir = extras.getString(START_DIR);
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35 final boolean showHidden = extras.getBoolean(SHOW_HIDDEN, false);
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36 final boolean onlyDirs = extras.getBoolean(ONLY_DIRS, true);
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37 if(preferredStartDir != null) {
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38 File startDir = new File(preferredStartDir);
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39 if(startDir.isDirectory()) {
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40 dir = startDir;
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41 }
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42 }
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43
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44 setContentView(R.layout.chooser_list);
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45 setTitle(dir.getAbsolutePath());
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46 Button btnChoose = (Button) findViewById(R.id.btnChoose);
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47 String name = dir.getName();
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48 if(name.length() == 0)
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49 name = "/";
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50 btnChoose.setText("Choose " + "'" + name + "'");
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51 btnChoose.setOnClickListener(new View.OnClickListener() {
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52 public void onClick(View v) {
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53 returnDir(dir.getAbsolutePath());
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54 }
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55 });
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56
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57 ListView lv = getListView();
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58 lv.setTextFilterEnabled(true);
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59
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60 if(!dir.canRead()) {
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61 Context context = getApplicationContext();
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62 String msg = "Could not read folder contents.";
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63 Toast toast = Toast.makeText(context, msg, Toast.LENGTH_LONG);
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64 toast.show();
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65 return;
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66 }
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67
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68 final ArrayList<File> files = filter(dir.listFiles(), onlyDirs, showHidden);
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69 String[] names = names(files);
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70 setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, names));
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71
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72
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73 lv.setOnItemClickListener(new OnItemClickListener() {
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74 public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
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75 if(!files.get(position).isDirectory())
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76 return;
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77 String path = files.get(position).getAbsolutePath();
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78 Intent intent = new Intent(DirectoryPicker.this, DirectoryPicker.class);
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79 intent.putExtra(DirectoryPicker.START_DIR, path);
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80 intent.putExtra(DirectoryPicker.SHOW_HIDDEN, showHidden);
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81 intent.putExtra(DirectoryPicker.ONLY_DIRS, onlyDirs);
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82 startActivityForResult(intent, PICK_DIRECTORY);
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83 }
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84 });
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85 }
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86
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87 @Override
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88 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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89 if(requestCode == PICK_DIRECTORY && resultCode == RESULT_OK) {
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90 Bundle extras = data.getExtras();
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91 String path = (String) extras.get(DirectoryPicker.CHOSEN_DIRECTORY);
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92 returnDir(path);
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93 }
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94 }
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95
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96 private void returnDir(String path) {
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97 Intent result = new Intent();
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98 result.putExtra(CHOSEN_DIRECTORY, path);
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99 setResult(RESULT_OK, result);
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100 finish();
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101 }
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102
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103 public ArrayList<File> filter(File[] file_list, boolean onlyDirs, boolean showHidden) {
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104 ArrayList<File> files = new ArrayList<File>();
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105 for(File file: file_list) {
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106 if(onlyDirs && !file.isDirectory())
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107 continue;
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108 if(!showHidden && file.isHidden())
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109 continue;
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110 files.add(file);
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111 }
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112 Collections.sort(files);
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113 return files;
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114 }
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115
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116 public String[] names(ArrayList<File> files) {
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117 String[] names = new String[files.size()];
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118 int i = 0;
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119 for(File file: files) {
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120 names[i] = file.getName();
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121 i++;
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122 }
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123 return names;
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124 }
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125 }
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126
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