2

在我的 MainActivity onCreateView 中，我以编程方式（无 xml）创建了一个搜索栏，如下所示：

        mVolControlSB = new SeekBar(context);
        mVolControlSB.setMax(maxVolume);
        mVolControlSB.setProgress(curVolume);
        mVolControlSB.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onStopTrackingTouch(SeekBar arg0) {
            Log.d("MainActivity", "volControlSB.setOnSeekBarChangeListener onStopTrackingTouch arg0="+arg0);
        }

        @Override
        public void onStartTrackingTouch(SeekBar arg0) {
            Log.d("MainActivity", "volControlSB.setOnSeekBarChangeListener onStartTrackingTouch arg0="+arg0);
        }

        @Override
        public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {
            mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, arg1, 0);
        }
    });
    mVolControlSB.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, 0, 20));
    kitctrlLayout.addView(mVolControlSB);

它显示了搜索栏，但拇指位置在错误的位置（在我的示例中，maxVolume 为 15，curVolume 为 10，但它一直显示到左侧）。此外，当我拖动拇指时没有调用回调，没有任何反应。我将 mVolControlSB 设置为 MainActivity 类中的静态字段，但我也尝试将其作为本地

static  SeekBar mVolControlSB;

有人有想法吗？

请注意，我应该补充一点，我正在使用选项卡布局，并且在内部调用了此代码

        public static class DummySectionFragment extends Fragment {
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {

谢谢

4

1 回答 1

0

像这样对我来说很好。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ll = (LinearLayout) findViewById(R.id.lay);

    mVolControlSB = new SeekBar(this);
    mVolControlSB.setMax(15);
    mVolControlSB.setProgress(10);
    mVolControlSB
            .setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
                @Override
                public void onStopTrackingTouch(SeekBar arg0) {
                    Log.d("MainActivity",
                            "volControlSB.setOnSeekBarChangeListener onStopTrackingTouch arg0="
                                    + arg0.getProgress());
                }

                @Override
                public void onStartTrackingTouch(SeekBar arg0) {
                    Log.d("MainActivity",
                            "volControlSB.setOnSeekBarChangeListener onStartTrackingTouch arg0="
                                    + arg0.getProgress());
                }

                @Override
                public void onProgressChanged(SeekBar arg0, int arg1,
                        boolean arg2) {

                }
            });
    mVolControlSB.setLayoutParams(new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.WRAP_CONTENT));
    ll.addView(mVolControlSB);
}
于 2013-01-19T04:38:00.933 回答