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就像均衡器將有多個搜索條一樣，我想要實現多個seekbarpreferences，需要幫助。如何在一個優先級中實現多個Seekbar首選
我已經實現了單個seekbar，不知道如何處理多個視圖。
我單seekbarpreference代碼
public SeekBarPreference(Context context, AttributeSet attrs) {
super(context, attrs);
initPreference(context, attrs);
}
public SeekBarPreference(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initPreference(context, attrs);
}
private void initPreference(Context context, AttributeSet attrs) {
setValuesFromXml(attrs);
mSeekBar2 = new SeekBar(context, attrs);
mSeekBar2.setMax(mMaxValue - mMinValue);
mSeekBar2.setOnSeekBarChangeListener(this);
mSeekBar1 = new SeekBar(context, attrs);
mSeekBar1.setMax(mMaxValue - mMinValue);
mSeekBar1.setOnSeekBarChangeListener(this);
}
private void setValuesFromXml(AttributeSet attrs) {
mMaxValue = attrs.getAttributeIntValue(ANDROIDNS, "max", 100);
mMinValue = attrs.getAttributeIntValue(ROBOBUNNYNS, "min", 0);
mUnitsLeft = getAttributeStringValue(attrs, ROBOBUNNYNS, "unitsLeft",
"");
String units = getAttributeStringValue(attrs, ROBOBUNNYNS, "units", "");
mUnitsRight = getAttributeStringValue(attrs, ROBOBUNNYNS, "unitsRight",
units);
try {
String newInterval = attrs.getAttributeValue(ROBOBUNNYNS,
"interval");
if (newInterval != null)
mInterval = Integer.parseInt(newInterval);
} catch (Exception e) {
Log.e(TAG, "Invalid interval value", e);
}
}
private String getAttributeStringValue(AttributeSet attrs,
String namespace, String name, String defaultValue) {
String value = attrs.getAttributeValue(namespace, name);
if (value == null)
value = defaultValue;
return value;
}
@Override
protected View onCreateView(ViewGroup parent) {
RelativeLayout layout = null;
try {
LayoutInflater mInflater = (LayoutInflater) getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layout = (RelativeLayout) mInflater.inflate(
R.layout.seek_bar_preference, parent, false);
} catch (Exception e) {
Log.e(TAG, "Error creating seek bar preference", e);
}
return layout;
}
@Override
public void onBindView(View view) {
super.onBindView(view);
try {
// move our seekbar to the new view we've been given
ViewParent mSeekBar2oldContainer = mSeekBar2.getParent();
ViewParent oldContainer = mSeekBar1.getParent();
ViewGroup newContainer = (ViewGroup) view
.findViewById(R.id.seekBarPrefBarContainer);
if (oldContainer != newContainer) {
// remove the seekbar from the old view
if (oldContainer != null) {
((ViewGroup) oldContainer).removeView(mSeekBar1);
((ViewGroup) oldContainer).removeView(mSeekBar2);
}
// remove the existing seekbar (there may not be one) and add
// ours
newContainer.removeAllViews();
newContainer.addView(mSeekBar1,
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
newContainer.addView(mSeekBar2,
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
}
} catch (Exception ex) {
Log.e(TAG, "Error binding view: " + ex.toString());
}
updateView(view);
}
/**
* Update a SeekBarPreference view with our current state
*
* @param view
*/
protected void updateView(View view) {
try {
RelativeLayout layout = (RelativeLayout) view;
mStatusText = (TextView) layout.findViewById(R.id.seekBarPrefValue);
mStatusText.setText(String.valueOf(mCurrentValue));
mStatusText.setMinimumWidth(30);
mSeekBar1.setProgress(mCurrentValue - mMinValue);
mSeekBar2.setProgress(mCurrentValue - mMinValue);
TextView unitsRight = (TextView) layout
.findViewById(R.id.seekBarPrefUnitsRight);
unitsRight.setText(mUnitsRight);
TextView unitsLeft = (TextView) layout
.findViewById(R.id.seekBarPrefUnitsLeft);
unitsLeft.setText(mUnitsLeft);
} catch (Exception e) {
Log.e(TAG, "Error updating seek bar preference", e);
}
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
int newValue = progress + mMinValue;
if (newValue > mMaxValue)
newValue = mMaxValue;
else if (newValue < mMinValue)
newValue = mMinValue;
else if (mInterval != 1 && newValue % mInterval != 0)
newValue = Math.round(((float) newValue)/mInterval) * mInterval;
// change rejected, revert to the previous value
if (!callChangeListener(newValue)) {
seekBar.setProgress(mCurrentValue - mMinValue);
return;
}
// change accepted, store it
mCurrentValue = newValue;
mStatusText.setText(String.valueOf(newValue));
persistInt(newValue);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
notifyChanged();
}
@Override
protected Object onGetDefaultValue(TypedArray ta, int index) {
int defaultValue = ta.getInt(index, DEFAULT_VALUE);
return defaultValue;
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
if (restoreValue) {
mCurrentValue = getPersistedInt(mCurrentValue);
} else {
int temp = 0;
try {
temp = (Integer) defaultValue;
} catch (Exception ex) {
Log.e(TAG, "Invalid default value: " + defaultValue.toString());
}
persistInt(temp);
mCurrentValue = temp;
}
}
}
