我想表明的畫廊在文件夾視圖

Question

這是我的代碼，我使用的是用來顯示在GridView控件庫，但顯示所有圖片在這樣

Sample Link 1圖像gridview的，但我想顯示畫廊這樣

http://www.google.com.pk/imgres?hl=en&biw=878&bih=598&tbm=isch&tbnid=17fWAXUGZ3USxM:&imgrefurl=http://www.maclife.com/article/howtos/sync_your_android_phone_your_mac?page=0,2&docid=FGf7ur67XeENhM&imgurl=http://www.maclife.com/files/u32/1201_videogallery_480.jpg&w=480&h=854&ei=M9FbUY_aNsrvswburIDABw&zoom=1&iact=hc&vpx=664&vpy=144&dur=1467&hovh=300&hovw=168&tx=123&ty=203&page=1&tbnh=135&tbnw=75&start=0&ndsp=19&ved=1t:429,r:18,s:0,i:133

文件夾視圖，所以當用戶點擊任何文件夾時，它的內容顯示在gridview中我該怎麼做？

這是我的代碼。

 
public class AndroidCustomGalleryActivity extends Activity { 
    private int count; 
    private Bitmap[] thumbnails; 
    private boolean[] thumbnailsselection; 
    private String[] arrPath; 
    private ImageAdapter imageAdapter;
 

Cursor imagecursor; 

int image_column_index; 

Button selectBtn; 

ProgressDialog myProgressDialog = null; 

DataBase db; 

Handler handle = new Handler(){   
    public void handleMessage(android.os.Message msg) { 

     if (msg.what == 1) 
     { 
      hideProgress(); 

      GridView imagegrid = (GridView) findViewById 
    (R.id.PhoneImageGrid); 
      imageAdapter = new ImageAdapter(); 
      imagegrid.setAdapter(imageAdapter); 
     } 
     else if (msg.what == 3) 
     { 
      hideProgress(); 

      AndroidCustomGalleryActivity.this.finish(); 

     } 
     else if (msg.what == 2) 
     { 
      hideProgress(); 
     } 
     super.handleMessage(msg); 
    }; 
}; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.gallery); 

    showProgress(); 
    new Thread() { 
     public void run() { 
      try 
      { 
       loadFeed(); 
       android.os.Message alertMessage = new android.os.Message(); 
       alertMessage.what = 1; 
       handle.sendMessage(alertMessage); 
      } 
      catch(Exception e) 
      { 
       android.os.Message alertMessage = new android.os.Message(); 
       alertMessage.what = 2; 
       handle.sendMessage(alertMessage);  
      } 
     } 
    }.start(); 


    selectBtn = (Button) findViewById(R.id.selectBtn); 
    selectBtn.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 

      showProgress(); 
      new Thread() { 
       public void run() { 
        try 
        { 
         SelecedtPhotos(); 
         android.os.Message alertMessage = new 
    android.os.Message(); 
         alertMessage.what = 3; 
         handle.sendMessage(alertMessage); 
        } 
        catch(Exception e) 
        { 
         android.os.Message alertMessage = new 
    android.os.Message(); 
         alertMessage.what = 2; 
         handle.sendMessage(alertMessage);  
        } 
       } 
      }.start(); 


     } 
    }); 

} 

public static byte[] getBitmapAsByteArray(Bitmap bitmap) { 
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); 
    bitmap.compress(CompressFormat.PNG, 0, outputStream);  
    return outputStream.toByteArray(); 
} 

public class ImageAdapter extends BaseAdapter { 

    private LayoutInflater mInflater; 

    public ImageAdapter() { 
     mInflater = (LayoutInflater) getSystemService 
    (Context.LAYOUT_INFLATER_SERVICE); 
    } 

    public int getCount() { 
     return count; 
    } 

    public Object getItem(int position) { 
     return position; 
    } 

    public long getItemId(int position) { 
     return position; 
    } 

    public View getView(int position, View convertView, ViewGroup parent) { 
     ViewHolder holder; 

     if (convertView == null) { 

      holder = new ViewHolder(); 
      convertView = mInflater.inflate(R.layout.galleryitem, 
    null); 
      holder.imageview = (ImageView) 
    convertView.findViewById 
(R.id.thumbImage); 
      holder.checkbox = (CheckBox) convertView.findViewById 
    (R.id.itemCheckBox); 

      convertView.setTag(holder); 
     } 
     else 
     { 
      holder = (ViewHolder) convertView.getTag(); 
     } 

     holder.checkbox.setId(position); 
     holder.imageview.setId(position); 

     holder.checkbox.setOnClickListener(new OnClickListener() {   
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       CheckBox cb = (CheckBox) v; 
       int id = cb.getId(); 

       if (thumbnailsselection[id]) 
       { 
        cb.setChecked(false); 
        thumbnailsselection[id] = false; 
       } 
       else 
       { 
        cb.setChecked(true); 
        thumbnailsselection[id] = true; 
       } 
      } 
     }); 

     /*holder.imageview.setOnClickListener(new OnClickListener() {   
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       int id = v.getId(); 
       Intent intent = new Intent(); 
       intent.setAction(Intent.ACTION_VIEW); 
       intent.setDataAndType(Uri.parse("file://" + 
    arrPath[id]), "image/*"); 
       startActivity(intent); 
      } 
     });*/ 

     holder.imageview.setImageBitmap(thumbnails[position]); 
     holder.checkbox.setChecked(thumbnailsselection[position]); 
     holder.id = position; 

     return convertView; 
    } 
} 
class ViewHolder { 
    ImageView imageview; 
    CheckBox checkbox; 
    int id; 
} 

public void loadFeed() 
{ 
    final String[] columns = { MediaStore.Images.Media.DATA, 
    MediaStore.Images.Media._ID }; 
    final String orderBy = MediaStore.Images.Media._ID; 

    imagecursor = managedQuery 
    (MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
    columns, null,null, orderBy); 

    image_column_index = imagecursor.getColumnIndex 
    (MediaStore.Images.Media._ID); 

    this.count = imagecursor.getCount(); 

    this.thumbnails = new Bitmap[this.count]; 

    this.arrPath = new String[this.count]; 

    this.thumbnailsselection = new boolean[this.count]; 

    for (int i = 0; i < this.count; i++) 
    { 
     imagecursor.moveToPosition(i); 
     int id = imagecursor.getInt(image_column_index); 
     int dataColumnIndex = imagecursor.getColumnIndex 
    (MediaStore.Images.Media.DATA); 
     thumbnails[i] = MediaStore.Images.Thumbnails.getThumbnail 
(getApplicationContext().getContentResolver(), 
    id,MediaStore.Images.Thumbnails.MICRO_KIND, 
null); 
     arrPath[i]= imagecursor.getString(dataColumnIndex); 
    } 

Answer 1

您知道要在網格視圖中顯示的圖像。所以最初得到設計自定義佈局與四個圖像像四個圖像視圖的文件夾。然後加載您的特定文件夾圖像縮略圖。

希望這會幫助你。