/
NumberPickerPreference.java
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/
NumberPickerPreference.java
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package de.afarber.myprefs;
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;
import android.widget.NumberPicker;
import android.widget.TextView;
public class NumberPickerPreference extends DialogPreference {
private NumberPicker mPicker;
private int mNumber = 0;
public NumberPickerPreference(Context context) {
this(context, null, 0);
}
public NumberPickerPreference(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public NumberPickerPreference(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setPositiveButtonText(android.R.string.ok);
setNegativeButtonText(android.R.string.cancel);
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
TextView title = (TextView) view.findViewById(android.R.id.title);
if (title != null) {
title.setSingleLine(false);
title.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18);
}
}
@Override
protected View onCreateDialogView() {
mPicker = new NumberPicker(getContext());
mPicker.setMinValue(1);
mPicker.setMaxValue(100);
// should be after setMinValue and setMaxValue calls
mPicker.setValue(mNumber);
return mPicker;
}
@Override
protected void onDialogClosed(boolean positiveResult) {
if (positiveResult) {
// needed when user edits the text field and clicks OK
mPicker.clearFocus();
setValue(mPicker.getValue());
}
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
setValue(restoreValue ? getPersistedInt(mNumber) : (Integer) defaultValue);
}
public void setValue(int value) {
if (shouldPersist()) {
persistInt(value);
}
if (value != mNumber) {
mNumber = value;
notifyChanged();
}
}
@Override
protected Object onGetDefaultValue(TypedArray a, int index) {
return a.getInt(index, 0);
}
}