我已经构建了一个自定义相机应用程序,可将照片保存到我的SD卡上的特定文件夹中,并有自己的图库视图,用于查看该文件夹中的照片“/ sdcard / myApp / images”
我一直在两种不同的平板电脑上进行测试,Galaxy Tab-1 10英寸和Galaxy Tab-2 10英寸。相机可以在平板电脑上正常工作,拍照并将其保存到应用创建的文件夹中。但是Tab1上的图库视图不显示该文件夹中的所有照片。选项卡-2始终显示当前文件夹中的所有照片,但选项卡-1通常仅显示上次重新启动平板电脑时该文件夹中的图像。
所以在Tab-1上,如果我在该文件夹中没有照片,然后用相机拍摄两张照片并切换到图库视图,则显示没有照片。如果我然后重新启动,并转到图库视图我看到两张照片,但如果我切换到相机并拍摄另一张照片,画廊只显示原来的两张,直到我重新启动。
适用于Android 3.2 +但3.1 nope!
有什么想法吗?
将光标发送到galleryView的构造函数中的适配器:
// Set up an array of the Thumbnail Image ID column we want
String[] projection = {MediaStore.Images.Media._ID};
// Create the cursor pointing to the SDCard
cursor = managedQuery( MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
projection, // Which columns to return
MediaStore.Images.Media.DATA + " like ? ",
new String[] {"%LC/images%"},
MediaStore.Images.Media._ID + " DESC");
// Get the column index of the Thumbnails Image ID
columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
ga.setAdapter(new GallAdapter(this,cursor,columnIndex));
addapter:
public class GallAdapter extends BaseAdapter {
public Cursor cursor;
private int columnIndex;
private Context context;
int imageBackground;
String url;
Uri uri;
int originalImageId;
int imageID;
int columnData;
ViewGroup myp;
ImageView d;
public GallAdapter(Context ctx, Cursor cur, int cIn ) {
context = ctx;
columnIndex = cIn;
cursor = cur;
Log.v("GallAdapter", "COUNT:"+getCount());
}
@Override
public int getCount() {
return cursor.getCount();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
myp = parent;
View v;
if(convertView ==null){
v = LayoutInflater.from(context).inflate(R.layout.galitem, parent, false);
}else{
v = convertView;
}
ImageView photo = (ImageView) v.findViewById(R.id.imageView);
ImageView border = (ImageView) v.findViewById(R.id.borderView);
d = (ImageView) v.findViewById(R.id.delView);
// Move cursor to current position
cursor.moveToPosition(position);
// Get the current value for the requested column
imageID = cursor.getInt(columnIndex);
// obtain the image URI
uri = Uri.withAppendedPath( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, Integer.toString(imageID) );
url = uri.toString();
// Set the content of the image based on the image URI
originalImageId = Integer.parseInt(url.substring(url.lastIndexOf("/") + 1, url.length()));
Bitmap b = MediaStore.Images.Thumbnails.getThumbnail(context.getContentResolver(),
originalImageId, MediaStore.Images.Thumbnails.MINI_KIND, null);
photo.setImageBitmap(b);
photo.setScaleType(ImageView.ScaleType.FIT_CENTER);
d.setTag(uri);
d.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
String path = getRealPathFromURI((Uri) v.getTag());
alertBox("Warning!", "Are you sure you want to delete this photo?", path, v);
}
});
return v;
}
这又适用于tab-2(os 4.0)和tab-1,现在固件是在tab-1和os从3.1到3.2更新的,但为什么它不能正常工作..
答案 0 :(得分:1)
尝试此操作以刷新媒体文件。
this._context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + Environment.getExternalStorageDirectory() + "/Hugg/" + name)));