Android中的MediaPlayer片段獲取空指針？

Question

我有以下代碼：

    Button one = (Button)getView().findViewById(R.id.button_audio);
    final MediaPlayer mp = MediaPlayer.create(getActivity().getApplicationContext(), R.raw.idontlike);
    one.setOnClickListener(new OnClickListener(){

        public void onClick(View v) {
            mp.start();
        }
    });

我收到此錯誤：

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference

Answer 1

您需要搜索片段布局，因此請嘗試以下操作

View myView= inflater.inflate(R.layout.fragment_main, container, false);
Button one = (Button) myView.findViewById(R.id.button);