Question

我正在尝试在其中创建一个带有ImageButtons的gridView，因此在按下时会发出声音。到目前为止，我有我的GridView_layout.xml，我的button.xml的布局。我的gridAdapter用按钮填充网格。使用我当前的代码，网格将填充按钮，但按下时不会发出声音。

这是我的按钮活动的一部分，它扩展了活动，以下代码块在onCreate（）方法中：

        final Context context = getApplicationContext();
        final int duration = Toast.LENGTH_SHORT;
        final ImageButton one = (ImageButton) findViewById(R.id.imageButton);

gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v,
                                    int position, long id) {

                one.setOnClickListener(new View.OnClickListener() {

                    public void onClick(View v) {


                        final MediaPlayer mp = MediaPlayer.create(getApplicationContext(), R.raw.pears);

                        if (mp.isPlaying()) {
                            mp.stop();
                            mp.reset();
                        }

                        if (mp == null) {
                            Toast toast = Toast.makeText(context, "button error", duration);
                            toast.show();
                        } else {

                            mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {

                                @Override
                                public void onCompletion(MediaPlayer mediaplayer) {
                                    mp.stop();
                                    mp.release();
                                }
                            });
                            mp.start();
                        }
                    }
                });
            }
        });

来自gridAdapter的

getView（）方法按要求：

public View getView(int position, View convertView, ViewGroup parent) {

    ImageButton imageButton;
    if (convertView == null) {

        // if it's not recycled, initialize some attributes
        imageButton = new ImageButton(mContext);
        imageButton.setLayoutParams(new GridView.LayoutParams(190, 190));
        imageButton.setScaleType(ImageView.ScaleType.CENTER_CROP);
        imageButton.setBackgroundColor(white);

    } else {
        imageButton = (ImageButton) convertView;
    }

    imageButton.setImageResource(mThumbIds[position]);
    return imageButton;
}

Answer 1

如果您想在按gridview中的项目时播放声音，请将代码更改为：

gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v,
                                int position, long id) {

   MediaPlayer  mPlayer = MediaPlayer.create(this, R.raw.pears);
   mPlayer .start();
        }
    });

如果您想在点击其中一个网格项内的按钮时播放声音，请在适配器的getview方法中使用此代码：

    one.setOnClickListener(new View.OnClickListener() {

                        public void onClick(View v) {
         MediaPlayer  mPlayer = MediaPlayer.create(this, R.raw.pears);
         mPlayer .start();
       }
       });

Gridview中有声音的图像按钮

1 个答案: