片段和按钮延迟

时间:2013-06-14 00:49:34

标签: android gridview android-fragments soundpool

我有一个可滚动的标签布局,其中有4个片段和4个适配器。每个片段都有几个按钮,使用SoundPool来播放短片段。它在很大程度上起作用(除了按钮点击后的一些崩溃),但我注意到从一个片段滚动到另一个片段需要很长时间。根据我看到的使用短片的内容切换到MediaPlayer之前,我还在使用SoundPool项目,现在需要一段时间来加载初始页面,有时点击崩溃应用程序(它也是做了MediaPlayer)。所以我想让滚动更加流畅(我确实打开了硬件加速),页面加载更快,按钮不崩溃。现在我有:

在MainActivity中:

public static class MiscFragment extends Fragment {

    public MiscFragment() {

    }
    View rootView;
    GridView gridView;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        rootView = inflater.inflate(R.layout.tab_fragment,
                container, false);

        gridView = (GridView) rootView.findViewById(R.id.tabgridview);
        gridView.setAdapter(new MiscAdapter(getActivity()));
        return rootView;
    }


}

这是一个内部类,它与我正在使用的其他Fragments相同。以及相应的Adapter类:

public class MiscAdapter extends BaseAdapter {

private Context mContext;
private String[] mButtons = { "Button1", "Button2", "Button3"};

public MiscAdapter(Context c) {
    mContext = c;
}

@Override
public int getCount() {

    return mButtons.length;
}

@Override
public Object getItem(int position) {

    return null;
}

@Override
public long getItemId(int position) {

    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    Button myButton;

    if (convertView == null) {
        myButton = new Button(mContext);
        myButton.setLayoutParams(new GridView.LayoutParams(230, 150));
        myButton.setPadding(8, 8, 8, 8);

        convertView = myButton;
    } else {
        myButton = (Button) convertView;
    }

    myButton.setText(mButtons[position]);
    myButton.setId(position);
    myButton.setTag(Integer.valueOf(position));
    myButton.setOnClickListener(new MyOnClickListener(position));

    return convertView;
}


class MyOnClickListener implements OnClickListener {

    private int position;
    final SoundPool pool = new SoundPool(1, AudioManager.STREAM_MUSIC, 0);
    List<Integer> streams = new ArrayList<Integer>();
    final int soundID1 = pool.load(mContext, R.raw.mp3_1, 1);
    final int soundID2 = pool.load(mContext, R.raw.mp3_2, 1);
    final int soundID3 = pool.load(mContext, R.raw.mp3_3, 1);


    public MyOnClickListener(int position) {

        this.position = position;

    }

    public void onClick(View v) {

        position = v.getId();

        if(position == 0){
            int streamID1 = pool.play(soundID1, 1.0f, 1.0f, 1, 0, 1.0f);
            streams.add(streamID1);
        }
        if(position == 1){
            int streamID2 = pool.play(soundID2, 1.0f, 1.0f, 1, 0, 1.0f);
            streams.add(streamID2);
        }
        if(position == 2){
            int streamID3 = pool.play(soundID3, 1.0f, 1.0f, 1, 0, 1.0f);
            streams.add(streamID3);
        }


    }

}

克隆了另一个Fragments的Adapter类。我认为问题可能是在每个适配器中重复使用GridView和/或SoundPool,但我不确定。真的很感激任何帮助!

1 个答案:

答案 0 :(得分:0)

如果可以提供帮助,切勿在主线程上加载内容。为什么要加载一个声音池而不是共享它。最有可能的是加载时间太长。您应该在后台线程上加载声音池并且只加载一次。