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The source code is released under:
GNU General Public License
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package com.spirosbond.callerflashlight; //from w ww. j av a 2s .co m /** * Created by spiros on 8/25/13. */ import android.content.Context; import android.content.res.TypedArray; import android.preference.Preference; import android.util.AttributeSet; import android.util.Log; import android.view.View; import android.view.ViewGroup; import android.view.ViewParent; import android.widget.LinearLayout; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; import android.widget.TextView; public class SeekBarPreference extends Preference implements OnSeekBarChangeListener { private static final String TAG = SeekBarPreference.class.getSimpleName(); private static final String ANDROIDNS = "http://schemas.android.com/apk/res/android"; private static final String APPLICATIONNS = "http://robobunny.com"; private static final int DEFAULT_VALUE = 50; private static int mMaxValue = 10; private static int mMinValue = 1; private static int mInterval = 1; private static int mCurrentValue; private String mUnitsLeft = ""; private String mUnitsRight = ""; private SeekBar mSeekBar; private TextView mStatusText; private CallerFlashlight cf; 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) { cf = (CallerFlashlight) context.getApplicationContext(); setValuesFromXml(attrs); mSeekBar = new SeekBar(context, attrs); mSeekBar.setMax(mMaxValue - mMinValue); mSeekBar.setOnSeekBarChangeListener(this); if (cf.getMsgFlashType() == 1) { if (CallerFlashlight.LOG) Log.d(TAG, "units: " + cf.getMyResources().getString(R.string.sms_mode_list_value_1)); setmUnitsRight(" " + cf.getMyResources().getString(R.string.sms_mode_list_value_1)); } else if (cf.getMsgFlashType() == 2) { if (CallerFlashlight.LOG) Log.d(TAG, "units: " + cf.getMyResources().getString(R.string.sms_mode_list_value_1)); setmUnitsRight(" " + cf.getMyResources().getString(R.string.sms_mode_list_value_2)); } setWidgetLayoutResource(R.layout.seek_bar_preference); } private void setValuesFromXml(AttributeSet attrs) { mMaxValue = attrs.getAttributeIntValue(ANDROIDNS, "max", 100); mMinValue = attrs.getAttributeIntValue(APPLICATIONNS, "min", 1); mUnitsLeft = getAttributeStringValue(attrs, "unitsLeft", ""); // String units = getAttributeStringValue(attrs, APPLICATIONNS, "units", ""); // mUnitsRight = getAttributeStringValue(attrs, APPLICATIONNS, "unitsRight", units); try { String newInterval = attrs.getAttributeValue(APPLICATIONNS, "interval"); if (newInterval != null) mInterval = Integer.parseInt(newInterval); } catch (Exception e) { Log.e(TAG, "Invalid interval value", e); } } private String getAttributeStringValue(AttributeSet attrs, String name, String defaultValue) { String value = attrs.getAttributeValue(SeekBarPreference.APPLICATIONNS, name); if (value == null) value = defaultValue; return value; } @Override protected View onCreateView(ViewGroup parent) { View view = super.onCreateView(parent); // The basic preference layout puts the widget frame to the right of the title and summary, // so we need to change it a bit - the seekbar should be under them. LinearLayout layout = (LinearLayout) view; layout.setOrientation(LinearLayout.VERTICAL); return view; } @Override public void onBindView(View view) { super.onBindView(view); try { // move our seekbar to the new view we've been given ViewParent oldContainer = mSeekBar.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(mSeekBar); } // remove the existing seekbar (there may not be one) and add ours newContainer.removeAllViews(); newContainer.addView(mSeekBar, ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); } } catch (Exception ex) { Log.e(TAG, "Error binding view: " + ex.toString()); } //if dependency is false from the beginning, disable the seek bar if (view != null && !view.isEnabled()) { mSeekBar.setEnabled(false); } updateView(view); } /** * Update a SeekBarPreference view with our current state * * @param view */ protected void updateView(View view) { try { mStatusText = (TextView) view.findViewById(R.id.seekBarPrefValue); mStatusText.setText(String.valueOf(mCurrentValue)); mStatusText.setMinimumWidth(30); mSeekBar.setProgress(mCurrentValue - mMinValue); TextView unitsRight = (TextView) view.findViewById(R.id.seekBarPrefUnitsRight); if (cf.getMsgFlashType() == 1) { if (CallerFlashlight.LOG) Log.d(TAG, "units: " + cf.getMyResources().getString(R.string.sms_mode_list_value_1)); setmUnitsRight(" " + cf.getMyResources().getString(R.string.sms_mode_list_value_1)); } else if (cf.getMsgFlashType() == 2) { if (CallerFlashlight.LOG) Log.d(TAG, "units: " + cf.getMyResources().getString(R.string.sms_mode_list_value_1)); setmUnitsRight(" " + cf.getMyResources().getString(R.string.sms_mode_list_value_2)); } unitsRight.setText(mUnitsRight); TextView unitsLeft = (TextView) view.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 ta.getInt(index, DEFAULT_VALUE); } @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; } } /** * make sure that the seekbar is disabled if the preference is disabled */ @Override public void setEnabled(boolean enabled) { super.setEnabled(enabled); mSeekBar.setEnabled(enabled); } @Override public void onDependencyChanged(Preference dependency, boolean disableDependent) { super.onDependencyChanged(dependency, disableDependent); //Disable movement of seek bar when dependency is false if (mSeekBar != null) { mSeekBar.setEnabled(!disableDependent); } } public void setmUnitsRight(String unit) { mUnitsRight = unit; } }