標籤：des android io os ar sp 檔案 on 問題
============問題描述============
String a="file://"+Environment.getExternalStorageDirectory().getPath()+"/dcim/Camera/";
// File baseFile = new File(a+"/dcim/Camera/15.jpg");
// Uri uri = Uri.fromFile(baseFile) ;
// Uri uri = Uri.parse(a) ;
// 讀取SD卡中所有圖片
Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
String[] projection = { MediaStore.Images.Media._ID,
MediaStore.Images.Media.DISPLAY_NAME,
MediaStore.Images.Media.DATA, MediaStore.Images.Media.SIZE };
String selection = MediaStore.Images.Media.MIME_TYPE + "=?";
String[] selectionArg = { "image/jpeg" };
Cursor mCursor = this.managedQuery(uri, projection, selection,
selectionArg, MediaStore.Images.Media.DATE_MODIFIED + " desc");
imageList.clear();
if (mCursor != null) {
mCursor.moveToFirst();
while (mCursor.getPosition() != mCursor.getCount()) {
imageMap = new HashMap<String, String>();
imageMap.put(imageID, mCursor.getString(mCursor
.getColumnIndex(MediaStore.Images.Media._ID)));
imageMap.put(imageName, mCursor.getString(mCursor
.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME)));
imageMap.put(
imageInfo,
" "
+ (mCursor.getLong(mCursor
.getColumnIndex(MediaStore.Images.Media.SIZE)) / 1024)
+ "KB");
imageList.add(imageMap);
fileNames.add(mCursor.getString(mCursor
.getColumnIndex(MediaStore.Images.Media.DATA)));
mCursor.moveToNext();
}
mCursor.close();
}
// 讀取SD卡中所有圖片
Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
這個方式擷取所有圖片沒問題，但是我改成指定的SD卡檔案夾路徑卻不行
String a="file://"+Environment.getExternalStorageDirectory().getPath()+"/dcim/Camera/";
// File baseFile = new File(a+"/dcim/Camera/15.jpg");
// Uri uri = Uri.fromFile(baseFile) ;
Uri uri = Uri.parse(a) ;
都有嘗試過都不行，不知道為撒，請大拿提示下
============解決方案1============
如果是檔案夾file.delete()會刪除其目錄下所有檔案 但是檔案夾仍然存在~ 如果不是檔案夾就直接刪除的！
android如何擷取一個SD卡指定檔案夾的圖片Uri uri問題
