Java tutorial
/* * Copyright 2013 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * You can find source here: * https://code.google.com/p/dashclock/source/browse/main/src/main/java/com/google/android/apps/dashclock/configuration/ColorPreference.java */ package com.fast.access.kam.widget.colorpicker.dashclockpicker; import android.app.Activity; import android.app.Dialog; import android.content.res.Resources; import android.graphics.Color; import android.graphics.drawable.Drawable; import android.graphics.drawable.GradientDrawable; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v7.app.AlertDialog; import android.util.TypedValue; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.ImageView; import android.widget.TextView; import com.fast.access.kam.R; import java.util.ArrayList; import java.util.List; /** * ColorDialog extracted from {@link ColorPreference}. It can be used as DialogFragment. * * @author Gabriele Mariotti (gabri.mariotti@gmail.com) */ public class ColorPickerDialogDash extends DialogFragment { private ColorGridAdapter mAdapter; private GridView mColorGrid; private int[] mColorChoices = {}; private int mValue = 0; private int mItemLayoutId = R.layout.dash_grid_item_color; private int mNumColumns = 5; //--------------------------------------------------------------------------------------------------- //Added //--------------------------------------------------------------------------------------------------- protected int mSelectedColor; protected int mTitleResId = R.string.color_picker_default_title; protected OnColorSelectedListener mListener; //Bundle protected static final String KEY_TITLE_ID = "title_id"; protected static final String KEY_COLORS = "colors"; protected static final String KEY_SELECTED_COLOR = "selected_color"; protected static final String KEY_COLUMNS = "columns"; public ColorPickerDialogDash() { } public static ColorPickerDialogDash newInstance() { return new ColorPickerDialogDash(); } //--------------------------------------------------------------------------------------------------- // Added //--------------------------------------------------------------------------------------------------- /** * Constructor * * @param titleResId * title resource id * @param colors * array of colors * @param selectedColor * selected color * @param columns * number of columns * @return new ColorPickerDialog */ public static ColorPickerDialogDash newInstance(int titleResId, int[] colors, int selectedColor, int columns) { ColorPickerDialogDash colorPicker = ColorPickerDialogDash.newInstance(); colorPicker.initialize(titleResId, colors, selectedColor, columns); return colorPicker; } public void setArguments(int titleResId, int columns) { Bundle bundle = new Bundle(); bundle.putInt(KEY_TITLE_ID, titleResId); bundle.putInt(KEY_COLUMNS, columns); setArguments(bundle); } /** * Interface for a callback when a color square is selected. */ public interface OnColorSelectedListener { /** * Called when a specific color square has been selected. */ public void onColorSelected(int color); } public void setOnColorSelectedListener(OnColorSelectedListener listener) { mListener = listener; } /** * Initialize the dialog picker * * @param titleResId * title resource id * @param colors * array of colors * @param selectedColor * selected color * @param columns * number of columns */ public void initialize(int titleResId, int[] colors, int selectedColor, int columns) { mColorChoices = colors; mNumColumns = columns; mSelectedColor = selectedColor; if (titleResId > 0) mTitleResId = titleResId; setArguments(mTitleResId, mNumColumns); } //--------------------------------------------------------------------------------------------------- public void setPreference() { tryBindLists(); } @Override public void onAttach(Activity activity) { super.onAttach(activity); if (mColorChoices.length > 0) tryBindLists(); } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { LayoutInflater layoutInflater = LayoutInflater.from(getActivity()); View rootView = layoutInflater.inflate(R.layout.dash_dialog_colors, null); if (getArguments() != null) { mTitleResId = getArguments().getInt(KEY_TITLE_ID); mNumColumns = getArguments().getInt(KEY_COLUMNS); } if (savedInstanceState != null) { mColorChoices = savedInstanceState.getIntArray(KEY_COLORS); mSelectedColor = (Integer) savedInstanceState.getSerializable(KEY_SELECTED_COLOR); tryBindLists(); } mColorGrid = (GridView) rootView.findViewById(R.id.color_grid); mColorGrid.setNumColumns(mNumColumns); mColorGrid.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> listView, View view, int position, long itemId) { //Added //Toast.makeText(getActivity(), "Selected color="+mAdapter.getItem(position), Toast.LENGTH_LONG).show(); if (mListener != null) mListener.onColorSelected(mAdapter.getItem(position)); dismiss(); } }); tryBindLists(); return new AlertDialog.Builder(getActivity()).setView(rootView).setTitle(mTitleResId) //Added .create(); } private void tryBindLists() { if (isAdded() && mAdapter == null) { mAdapter = new ColorGridAdapter(); } if (mAdapter != null && mColorGrid != null) { mAdapter.setSelectedColor(mSelectedColor); //USE this to select color mColorGrid.setAdapter(mAdapter); } } private class ColorGridAdapter extends BaseAdapter { private List<Integer> mChoices = new ArrayList<Integer>(); private int mSelectedColor; private ColorGridAdapter() { for (int color : mColorChoices) { mChoices.add(color); } } @Override public int getCount() { return mChoices.size(); } @Override public Integer getItem(int position) { return mChoices.get(position); } @Override public long getItemId(int position) { return mChoices.get(position); } @Override public View getView(int position, View convertView, ViewGroup container) { if (convertView == null) { convertView = LayoutInflater.from(getActivity()).inflate(mItemLayoutId, container, false); } int color = getItem(position); setColorViewValue(convertView.findViewById(R.id.color_view), color); convertView.setBackgroundColor(color == mSelectedColor ? 0x6633b5e5 : 0); return convertView; } public void setSelectedColor(int selectedColor) { if (mSelectedColor != selectedColor) { mSelectedColor = selectedColor; notifyDataSetChanged(); } } } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putIntArray(KEY_COLORS, mColorChoices); outState.putSerializable(KEY_SELECTED_COLOR, mSelectedColor); } private static void setColorViewValue(View view, int color) { if (view instanceof ImageView) { ImageView imageView = (ImageView) view; Resources res = imageView.getContext().getResources(); Drawable currentDrawable = imageView.getDrawable(); GradientDrawable colorChoiceDrawable; if (currentDrawable != null && currentDrawable instanceof GradientDrawable) { // Reuse drawable colorChoiceDrawable = (GradientDrawable) currentDrawable; } else { colorChoiceDrawable = new GradientDrawable(); colorChoiceDrawable.setShape(GradientDrawable.OVAL); } // Set stroke to dark version of color int darkenedColor = Color.rgb(Color.red(color) * 192 / 256, Color.green(color) * 192 / 256, Color.blue(color) * 192 / 256); colorChoiceDrawable.setColor(color); colorChoiceDrawable.setStroke( (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, res.getDisplayMetrics()), darkenedColor); imageView.setImageDrawable(colorChoiceDrawable); } else if (view instanceof TextView) { ((TextView) view).setTextColor(color); } } }