无法解析postdelayed方法

好吧，这是我的代码：

final TextToSpeech ttv = new TextToSpeech(MainActivity.this, new TextToSpeech.OnInitListener() { public void onInit(int status) { ttv.setLanguage(Locale.US); Log.e("Init", "Success"); ttvInit = true; // wait a little for the initialization to complete Handler h = new Handler(); h.postDelayed(new Runnable() { public void run() { ttv.speak(textSpeech.getText().toString(),TextToSpeech.QUEUE_FLUSH,null); } }, 400);} else { System.out.println("Something went wrong."); } } 

但我得到一个错误“无法解决方法’postDelayed（java.lung.Runnable，int）’

编辑：它现在告诉我它没用了： http ： //www.igreklik.com/slike/viewer.php？ file = 75221279105193055086.png＆file_imgur = HPjDlfa.png

Answer 1

检查您的导入：

 import android.os.Handler; 

并将您的代码更改为此（您的“else”语句不正确）：

 final TextToSpeech ttv = new TextToSpeech(MainActivity.this, new TextToSpeech.OnInitListener() { public void onInit(int status) { ttv.setLanguage(Locale.US); Log.e("Init", "Success"); ttvInit = true; // wait a little for the initialization to complete Handler h = new Handler(); h.postDelayed(new Runnable() { public void run() { ttv.speak(textSpeech.getText().toString(),TextToSpeech.QUEUE_FLUSH,null); } }, 400); } });