Question

当用户点击分享按钮时，这是我的代码。

 public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn_login :
                loginToTwitter();
                break;
            case R.id.btn_share:
                status = "I'm riding at taxi name: " + operator.getText().toString() + "\n" + "With the plate number of: " + plate.getText().toString() + "\n" +
                        shareEditText.getText().toString();
                if(status.trim().length() > 0) {
                    new updateTwitterStatus().execute(status);
                } else {
                    Toast.makeText(this, "Message is empty!!", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }

    class updateTwitterStatus extends AsyncTask<String, String, Void> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            pDialog = new ProgressDialog(MainActivity2Activity.this);
            pDialog.setMessage("Posting to Twitter...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(false);
            pDialog.show();
        }

        @Override
        protected Void doInBackground(String... params) {

            String status = params[0];

            try {
                ConfigurationBuilder builder = new ConfigurationBuilder();
                builder.setOAuthConsumerKey(consumerKey);
                builder.setOAuthConsumerSecret(consumerSecret);

                String access_token = sharedPreferences.getString(PREF_KEY_OAUTH_TOKEN, "");
                String acces_token_secret = sharedPreferences.getString(PREF_KEY_OAUTH_SECRET, "");

                AccessToken accessToken = new AccessToken(access_token, acces_token_secret);

                Twitter twitter = new TwitterFactory(builder.build()).getInstance(accessToken);

                StatusUpdate statusUpdate = new StatusUpdate(status);

                twitter4j.Status response = twitter.updateStatus(statusUpdate);

            } catch (TwitterException e) {
                e.printStackTrace();
            }

            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {

            pDialog.dismiss();

            Toast.makeText(getApplicationContext(), "Posted to Twitter!", Toast.LENGTH_SHORT);

            shareEditText.setText("");
        }
    }

当成功发送内容消息时，我在OnPostExecute中分配的Toast不起作用。即使推文没有发送吐司也没有显示。我不知道为什么。我无法确定我的推文是否被推文。但是当我尝试它时，它成功发了推文，但它并没有显示吐司。

Answer 1

你应该使用show()

 Toast.makeText(getApplicationContext(), "Posted to Twitter!", Toast.LENGTH_SHORT).show();

并且为了更好的编码，使用上下文变量或activityName.this而不是getApplicationContext（）

Answer 2

Toast.makeText(getApplicationContext(), "Posted to Twitter!", Toast.LENGTH_SHORT);

Toast未显示，因为您尚未调用show()方法。

喜欢：

 Toast.makeText(getApplicationContext(), "Posted to Twitter!", Toast.LENGTH_SHORT).show();

发布推文时没有显示Toast

2 个答案: