apps/oi-filemanager/FileManager/src/org/openintents/filemanager/SaveAsActivity.java

   1 package org.openintents.filemanager;\r
   2 \r
   3 import java.io.BufferedInputStream;\r
   4 import java.io.BufferedOutputStream;\r
   5 import java.io.File;\r
   6 import java.io.FileInputStream;\r
   7 import java.io.FileNotFoundException;\r
   8 import java.io.FileOutputStream;\r
   9 import java.io.IOException;\r
  10 import java.io.InputStream;\r
  11 import java.io.OutputStream;\r
  12 \r
  13 import org.openintents.intents.FileManagerIntents;\r
  14 \r
  15 import android.app.Activity;\r
  16 import android.content.ActivityNotFoundException;\r
  17 import android.content.Intent;\r
  18 import android.database.Cursor;\r
  19 import android.net.Uri;\r
  20 import android.os.Bundle;\r
  21 import android.os.Environment;\r
  22 import android.widget.RelativeLayout;\r
  23 import android.widget.Toast;\r
  24 \r
  25 public class SaveAsActivity extends Activity {\r
  26         protected static final int REQUEST_CODE_PICK_FILE_OR_DIRECTORY = 1;\r
  27         private Uri source;\r
  28         //Whether the scheme is file: (otherwise it's content:)\r
  29         private boolean fileScheme = false;\r
  30         \r
  31         \r
  32         @Override\r
  33     public void onCreate(Bundle savedInstanceState) {\r
  34         super.onCreate(savedInstanceState);\r
  35         //This activity is never shown to the user.\r
  36         setContentView(new RelativeLayout(this));\r
  37         Intent receivedIntent = getIntent();\r
  38         if(receivedIntent != null){\r
  39                 Uri uri = receivedIntent.getData();\r
  40                 source = uri;\r
  41                 if(uri.getScheme().equals("file"))\r
  42                         processFile(uri);\r
  43                 else if(uri.getScheme().equals("content"))\r
  44                         processContent(uri);\r
  45         }\r
  46         else{\r
  47                         Toast.makeText(this, R.string.saveas_no_file_picked, Toast.LENGTH_SHORT).show();\r
  48         }\r
  49     }\r
  50         \r
  51         private void startPickActivity(Intent intent){\r
  52                 try {\r
  53                         startActivityForResult(intent, REQUEST_CODE_PICK_FILE_OR_DIRECTORY);\r
  54                 } catch (ActivityNotFoundException e) {\r
  55                         //Should never happen, but Java requires this catch\r
  56                         Toast.makeText(this, R.string.saveas_error, Toast.LENGTH_SHORT).show();\r
  57                 }\r
  58         }\r
  59         \r
  60         private Intent createPickIntent(){\r
  61                 return new Intent(FileManagerIntents.ACTION_PICK_FILE);\r
  62         }\r
  63         \r
  64         private void processFile(Uri uri){\r
  65                 fileScheme = true;\r
  66                 Intent intent = createPickIntent();\r
  67                 intent.setData(uri);\r
  68                 startPickActivity(intent);\r
  69         }\r
  70         \r
  71         private void processContent(Uri uri){\r
  72                 fileScheme = false;\r
  73                 String name = getPath(uri);\r
  74                 Intent intent = createPickIntent();\r
  75                 intent.setData(Uri.parse(name));\r
  76                 startPickActivity(intent);\r
  77         }\r
  78         \r
  79         /*\r
  80          * Get the default path and filename for the saved file from content: scheme.\r
  81          * As the directory is always used the SD storage.\r
  82          * For GMail, the filename is the _display_name in its ContentProvider. Otherwise the file has\r
  83          * no name.\r
  84          * !IMPORTANT! When you add another "special" intent-filter like the one for GMail, consider,\r
  85          * if you could add also the code for finding out the filename.\r
  86          */\r
  87         private String getPath(Uri uri){\r
  88                 Uri sd = Uri.fromFile(Environment.getExternalStorageDirectory());\r
  89                 if(uri.getHost().equals("gmail-ls")){\r
  90                         Cursor cur = managedQuery(uri, new String[]{"_display_name"}, null, null, null);\r
  91                         int nameColumn = cur.getColumnIndex("_display_name"); \r
  92                         if(cur.moveToFirst()){\r
  93                                 return sd.buildUpon().appendPath(cur.getString(nameColumn)).toString();\r
  94                         }\r
  95                 }\r
  96                 return sd.getPath();\r
  97         }\r
  98     \r
  99     @Override\r
 100         protected void onActivityResult(int requestCode, int resultCode, Intent data) {\r
 101                 super.onActivityResult(requestCode, resultCode, data);\r
 102                 \r
 103                 switch (requestCode) {\r
 104                 case REQUEST_CODE_PICK_FILE_OR_DIRECTORY:\r
 105                         if (resultCode == RESULT_OK && data != null) {\r
 106                                 Uri destinationUri = data.getData();\r
 107                                 if (destinationUri != null && source != null) {\r
 108                                         String destinationPath = destinationUri.getPath();\r
 109                                         saveFile(new File(destinationPath));\r
 110                                 }\r
 111                         }\r
 112                         break;\r
 113                 }\r
 114                 finish(); //End the activity\r
 115         }\r
 116     \r
 117     private void saveFile(File destination){\r
 118                 InputStream in = null;\r
 119                 OutputStream out = null;\r
 120                 try {\r
 121                         if(fileScheme)\r
 122                                 in = new BufferedInputStream(new FileInputStream(source.getPath()));\r
 123                         else\r
 124                                 in = new BufferedInputStream(getContentResolver().openInputStream(source));\r
 125                         \r
 126                         out = new BufferedOutputStream(new FileOutputStream(destination));\r
 127                 byte[] buffer = new byte[1024];\r
 128                 \r
 129                 while(in.read(buffer) != -1)\r
 130                         out.write(buffer);\r
 131                         Toast.makeText(this, R.string.saveas_file_saved, Toast.LENGTH_SHORT).show();\r
 132                 } catch(FileNotFoundException e){\r
 133                         //Should never get here\r
 134                         Toast.makeText(this, R.string.saveas_error, Toast.LENGTH_SHORT).show();\r
 135                 } catch(IOException e){\r
 136                         Toast.makeText(this, R.string.saveas_error, Toast.LENGTH_SHORT).show();\r
 137                 }\r
 138                 finally{\r
 139                         if (in != null) {\r
 140                                 try {\r
 141                                         in.close();\r
 142                                 } catch (IOException e) {}\r
 143                         }\r
 144                         if (out != null) {\r
 145                                 try {\r
 146                                         out.close();\r
 147                                 } catch (IOException e) {}\r
 148                         }\r
 149                         \r
 150                 }\r
 151     }\r
 152 }\r