Android - UI线程和异步(AsyncTask)线程

    @Override
    public void onClick(View v) {
        String status = mEditStatus.getText().toString();
        Log.d(TAG, "onClick with status: " + status); //通过

        new PostTask().execute(status);
    }

    private final class PostTask extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... params) {
            YambaClient yambaClient = new YambaClient("student", "password");
            try {
                yambaClient.postStatus(params[0]);
                return "Successfully posted";
            } catch (YambaClientException e) {
                e.printStackTrace();
                return "Failed to post to yamba service";
            }
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            Toast.makeText(StatusActivity.this, s, Toast.LENGTH_LONG).show();
        }
    }