android如何获取一个SD卡指定文件夹的图片Uri uri问题
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) ;
// 读取SD卡中所有图片
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();
}
// 读取SD卡中所有图片
Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
这个方式获取所有图片没问题，但是我改成指定的SD卡文件夹路径却不行
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) ;
都有尝试过都不行，不知道为撒，请大拿提示下
[解决办法]
如果是文件夹file.delete()会删除其目录下所有文件 但是文件夹仍然存在~ 如果不是文件夹就直接删除的！
