如何動態更新從本機相機在android拍攝的照片的圖片庫？

Question

這是我的圖片庫代碼。到目前爲止，用於測試目的，我直接用了一些手動存儲圖像，

public class Photo_Gallery extends Activity 
{  
//---the images to display--- 
Integer[] imageIDs = { 
     R.drawable.a, 
     R.drawable.b, 
     R.drawable.c, 
     R.drawable.d, 
     R.drawable.e, 
}; 

@Override  
public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.displayview); 

    Gallery gallery = (Gallery) findViewById(R.id.gallery1); 

    gallery.setAdapter(new ImageAdapter(this));   
    gallery.setOnItemClickListener(new OnItemClickListener() 
    { 
     public void onItemClick(AdapterView parent, View v, int position, long id) 
       {     
        //---display the images selected--- 
        ImageView imageView = (ImageView) findViewById(R.id.image1);     
        imageView.setImageResource(imageIDs[position]); 
       } 
    }); 
} 

public class ImageAdapter extends BaseAdapter 
{ 
    private Context context; 
    private int itemBackground; 

    public ImageAdapter(Context c) 
    { 
     context = c; 
     //---setting the style--- 
     TypedArray a = obtainStyledAttributes(R.styleable.Gallery1); 
     itemBackground = a.getResourceId(
      R.styleable.Gallery1_android_galleryItemBackground, 0); 
     a.recycle();      
    } 

    //---returns the number of images--- 
    public int getCount() { 
     return imageIDs.length; 
    } 

    //---returns the ID of an item--- 
    public Object getItem(int position) { 
     return position; 
    }    

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

    //---returns an ImageView view--- 
    public View getView(int position, View convertView, ViewGroup parent) { 
     ImageView imageView = new ImageView(context); 
     imageView.setImageResource(imageIDs[position]); 
     imageView.setScaleType(ImageView.ScaleType.FIT_XY); 
     imageView.setLayoutParams(new Gallery.LayoutParams(75, 60)); 
     imageView.setBackgroundResource(itemBackground); 
     return imageView; 
    } 
}  

}

這裏是我用來捕捉圖像的代碼。

case R.id.takeSnapBtn: 

     try { 

      i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
      startActivityForResult(i, imageData); 

     } catch (Exception e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

下面是onActivityResult（），

protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    if (resultCode == RESULT_OK) { 

     Bundle extras = data.getExtras(); 
     bmp = (Bitmap) extras.get("data"); 

     imageView.setImageBitmap(bmp); 

    } 

} 

我會很高興，如果有人給我提供瞭如何動態更新與從相機拍攝的圖像畫廊的例子。

Answer 1

商店從應用程序拍攝的圖像和讀取SD卡的圖像畫廊..

File sdDir = new File("/sdcard/Pictures/YOUR_DIR"); 
sdDirFiles = sdDir.listFiles(); 
for (i = 0; i < sdDirFiles.length; i++) { 
//ADD to gallery HERE.. 
} 

Answer 2

If u get all images under the sdcard of perticular Bucket(folder) then use this code...

public class SubGalleryView extends Activity { 

    private ArrayList<Integer> ImageIds = new ArrayList<Integer>(); 
    private GridView subGalleryView; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.sub_gallery_view); 


      //Provide Bucket_Name/Folder_Name Using Bundle. 

     Bundle bundle = getIntent().getExtras(); 
     Toast.makeText(this, bundle.getString("Bucket_Name"), 
       Toast.LENGTH_SHORT).show(); 

      //Using Projection We get all images of all folder. 
     String[] projection = new String[] { MediaStore.Images.Media._ID, 
       MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME }; 
     Cursor cursor = managedQuery(
       MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, 
       null, null); 
     cursor.moveToFirst(); 
     if (cursor.getCount() > 0) { 
        //using this do{}while(); we get all image_id under perticular bucket. and strored in ArrayList of ImagesIds. 
      do { 
       int columnIndex = cursor 
         .getColumnIndexOrThrow(MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME); 
       if (cursor.getString(columnIndex).equalsIgnoreCase(
         bundle.getString("Bucket_Name"))) { 
        columnIndex = cursor 
          .getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID); 
        int imageID = cursor.getInt(columnIndex); 
        ImageIds.add(imageID); 
       } else if (bundle.getString("Bucket_Name").equalsIgnoreCase(
         "All Pictures")) { 
        columnIndex = cursor 
          .getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID); 
        int imageID = cursor.getInt(columnIndex); 
        ImageIds.add(imageID); 
       } 
      } while (cursor.moveToNext()); 
     } 

      //Pass ImageIds arrayList to Adapter. 
     subGalleryAdapter imageAdapter = new subGalleryAdapter(
       SubGalleryView.this, R.layout.sub_gallery_view_item, ImageIds); 
     subGalleryView = (GridView) findViewById(R.id.subGallery); 
     subGalleryView.setAdapter(imageAdapter); 
    } 

    public class subGalleryAdapter extends ArrayAdapter<Integer> { 

     private Context contex; 
     private int resourceId; 
     private LayoutInflater layoutInflater = null; 
     private ArrayList<Integer> mlist; 

     public subGalleryAdapter(Activity context, int resourceId, 
       ArrayList<Integer> list) { 
      super(context, resourceId, list); 
      this.mlist = list; 
      this.contex = context; 
      this.resourceId = resourceId; 
      this.layoutInflater = context.getLayoutInflater(); 

     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      ImageView viewHolder; 
      if (convertView == null) { 
       viewHolder = new ImageView(contex); 
       convertView = layoutInflater.inflate(resourceId, parent, false); 
       viewHolder = (ImageView) convertView 
         .findViewById(R.id.imageView1); 

      } else { 
       viewHolder = (ImageView) convertView 
         .findViewById(R.id.imageView1); 
      } 
      viewHolder.setImageURI(Uri.withAppendedPath(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
        "" + mlist.get(position))); 
      return convertView; 
     } 

    } 
} 

Using this code u get all images from perticular folder passing bucket display name in bundle. and if u get all images of all bucket(folder) form sdcard then use this code

public class SubGalleryViewy extends Activity { 


private Cursor cursor; 

private int columnIndex; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.sdcard); 

    // Set up an array of the Thumbnail Image ID column we want 
    String[] projection = {MediaStore.Images.Thumbnails._ID}; 
    // Create the cursor pointing to the SDCard 
    cursor = managedQuery(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, 
      projection, // Which columns to return 
      null,  // Return all rows 
      null, 
      MediaStore.Images.Thumbnails.IMAGE_ID); 
    // Get the column index of the Thumbnails Image ID 
    columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID); 

    GridView sdcardImages = (GridView) findViewById(R.id.sdcard); 
    sdcardImages.setAdapter(new ImageAdapter(this)); 

    // Set up a click listener 
    sdcardImages.setOnItemClickListener(new OnItemClickListener() { 
     public void onItemClick(AdapterView parent, View v, int position, long id) { 
      // Get the data location of the image 
      String[] projection = {MediaStore.Images.Media.DATA}; 
      cursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
        projection, // Which columns to return 
        null,  // Return all rows 
        null, 
        null); 
      columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
      cursor.moveToPosition(position); 
      // Get image filename 
      String imagePath = cursor.getString(columnIndex); 
      // Use this path to do further processing, i.e. full screen display 
     } 
    }); 
} 

/** 
* Adapter for our image files. 
*/ 
private class ImageAdapter extends BaseAdapter { 

    private Context context; 

    public ImageAdapter(Context localContext) { 
     context = localContext; 
    } 

    public int getCount() { 
     return cursor.getCount(); 
    } 
    public Object getItem(int position) { 
     return position; 
    } 
    public long getItemId(int position) { 
     return position; 
    } 
    public View getView(int position, View convertView, ViewGroup parent) { 
     ImageView picturesView; 
     if (convertView == null) { 
      picturesView = new ImageView(context); 
      // Move cursor to current position 
      cursor.moveToPosition(position); 
      // Get the current value for the requested column 
      int imageID = cursor.getInt(columnIndex); 
      // Set the content of the image based on the provided URI 
      picturesView.setImageURI(Uri.withAppendedPath(
        MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, "" + imageID)); 
      picturesView.setScaleType(ImageView.ScaleType.FIT_CENTER); 
      picturesView.setPadding(8, 8, 8, 8); 
      picturesView.setLayoutParams(new GridView.LayoutParams(100, 100)); 
     } 
     else { 
      picturesView = (ImageView)convertView; 
     } 


      return picturesView; 
     } 
    } 
}