Question

在我的MainActivity onCreateView中，我以编程方式创建了一个搜索栏（没有xml）：

        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);

显示搜索栏，但拇指位置错误（maxVolume为15，curVolume在我的示例中为10，但它一直显示在左侧）。另外，当我拖动拇指时没有调用回调，没有任何反应。我使mVolControlSB成为MainActivity类中的静态字段，但我也尝试将其作为本地

static  SeekBar mVolControlSB;

有没有人有想法？

请注意，我应该添加我使用标签布局，并在

中调用此代码

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

感谢

Answer 1

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);
}

Android SeekBar无法在onCreateView上运行

1 个答案: