輕按ListView中的項目時播放聲音

Question

所以我試圖在按下項目或ListView的行時播放聲音。 我正在使用此代碼：

listaMjeseci.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (position == 0){
                    MediaPlayer sijecanj = MediaPlayer.create(Mjeseci.this, R.raw.section1_mjeseci_sijecanj);
                    sijecanj.start();
                }
            }
        });

並獲取空指針異常。 Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference

我究竟做錯了什么？

Answer 1

    listView.setOnItemClickListener(new OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                        if (position == 0)
                       {
                    MediaPlayer sijecanj = MediaPlayer.create(Mjeseci.this, R.raw.section1_mjeseci_sijecanj);
                    sijecanj.start();
                }
                }
            });