相关疑难解决方法(0)

我目前正在尝试使用RelativeLayout的http://android-journey.blogspot.com/2010/01/for-almost-any-application-we-need-to.html教程来实现SeekBarPreference类.第一个问题是TextView preferenceText根本没有显示.第二个问题是酒吧不能像常规喜好那样滑动(比如媒体音量栏)？

public class SeekBarPreference extends Preference implements
    OnSeekBarChangeListener {

public static int maximum    = 100;
public static int interval   = 5;
private float oldValue = 25;
private TextView Indicator;

public SeekBarPreference(Context context) {
    super(context);
}

public SeekBarPreference(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public SeekBarPreference(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

@Override
protected View onCreateView(ViewGroup parent) {

    float scale = getContext().getResources().getDisplayMetrics().density;

    RelativeLayout layout = new RelativeLayout(getContext());

    RelativeLayout.LayoutParams textParams = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.WRAP_CONTENT, …