Question

我还在使用下面的代码，其中我已经给出了一个特定的图像，每次在墙上发布，但现在我想允许用户打开手机图库并选择图像，然后发布到Facebook墙

请写一些代码如何打开图库，然后选择要发布的图像，并显示如何在我的工作代码中显示所选图像，就像我仍在使用此行：

                params.putString("picture", 
                                        FacebookUtility.HACK_ICON_URL);

完成ItemClick的代码：

  public void onItemClick(AdapterView<?> adapterView, View view,
        int position, long id) {

    try {
        final long friendId;
        friendId = jsonArray.getJSONObject(position).getLong("uid");
        String name = jsonArray.getJSONObject(position).getString("name");
        new AlertDialog.Builder(this)
                .setTitle(R.string.post_on_wall_title)
                .setMessage(
                        String.format(getString(R.string.post_on_wall),
                                name))
                .setPositiveButton(R.string.yes,
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog,
                                    int which) {


                                Bundle params = new Bundle();

                                params.putString("to",
                                        String.valueOf(friendId));
                                params.putString("caption",
                                        getString(R.string.app_name));
                                params.putString("description",
                                        getString(R.string.app_desc));
                                params.putString("link", 
                                        "http://www.XXX.com");
                                params.putString("picture", 
                                        FacebookUtility.HACK_ICON_URL);                         
                                params.putString("name",
                                        getString(R.string.app_action));
                                FacebookUtility.facebook
                                        .dialog(FriendsList.this,
                                                "feed",
                                                params,
                                                (DialogListener) new PostDialogListener());
                            }

                        }).setNegativeButton(R.string.no, null).show();
    } catch (JSONException e) {
        showToast("Error: " + e.getMessage());
    }
}

Answer 1

public static Bitmap bmpScale;
public static byte[] data;      

       builder.setNegativeButton("Gallery",
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                    openGallery(SELECT_FILE1);

                }
            });


                public void openGallery(int SELECT_FILE1) {

    Intent intent = new Intent();
    intent.setType("image/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(
            Intent.createChooser(intent, "Select file to upload "),
            SELECT_FILE1);

    // new UploadMediaAsyncTask().execute();
}



    // ..................
protected void onActivityResult(int requestCode, int resultCode,
        Intent imageReturnedIntent) {
    super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
    Uri selectedImageUri = null;
    String filePath = null;
    switch (requestCode) {
    case SELECT_FILE1:
        if (resultCode == Activity.RESULT_OK) {
            selectedImage = imageReturnedIntent.getData();

            if (requestCode == SELECT_FILE1) {
                selectedPath1 = getPath(selectedImage);
                // mimagepath.setText(selectedPath1);
                Toast.makeText(Camera.this, "" + selectedPath1 + "", 500)
                        .show();

                if (selectedPath1 != null) {

                    BitmapFactory.Options options = new BitmapFactory.Options();

                    // Decode bitmap with inSampleSize set
                    options.inJustDecodeBounds = true;
                    // image path `String` where your image is located
                    BitmapFactory.decodeFile(selectedPath1, options);

                    int bitmapWidth = 400;
                    int bitmapHeight = 250;
                    final int height = options.outHeight;
                    final int width = options.outWidth;
                    int inSampleSize = 1;
                    if (height > bitmapHeight || width > bitmapWidth) {
                        if (width > height) {
                            inSampleSize = Math.round((float) height
                                    / (float) bitmapHeight);
                        } else {
                            inSampleSize = Math.round((float) width
                                    / (float) bitmapWidth);
                        }
                    }

                    options.inJustDecodeBounds = false;
                    options.inSampleSize = inSampleSize;

                     bmpScale = BitmapFactory.decodeFile(
                            selectedPath1, options);

                    imgggg.setImageBitmap(bmpScale);
                    ByteArrayOutputStream bos = new ByteArrayOutputStream();

                    // CompressFormat set up to JPG, you can change to PNG
                    // or
                    // whatever you
                    // want;

                    bmpScale.compress(CompressFormat.JPEG, 100, bos);
                    bmpScale.compress(CompressFormat.JPEG, 100, bos);
                    // **********************
                    //  
                //globaly..................................
                    data = bos.toByteArray();



                }

                // Log.d("setpath ", "setpath " + selectedPath1);
                // Log.d("setpath ", "setpath " + selectedPath1);
                // System.out.println("selectedPath1 : " + selectedPath1);
                // mimagepath.setText(selectedPath1);

            }
        }

        break;


}

public String getPath(Uri uri) {
    String[] projection = { MediaStore.Images.Media.DATA };
    Cursor cursor = managedQuery(uri, projection, null, null, null);
    int column_index = cursor
            .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    return cursor.getString(column_index);
}

允许用户打开电话，选择图像，然后发布到Facebook Wall

1 个答案: