Java tutorial
/* * Project: NextGIS Mobile * Purpose: Mobile GIS for Android. * Author: Stanislav Petriakov, becomeglory@gmail.com * ***************************************************************************** * Copyright (c) 2016 NextGIS, info@nextgis.com * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser Public License for more details. * * You should have received a copy of the GNU Lesser Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.nextgis.maplibui.formcontrol; import android.annotation.SuppressLint; import android.content.Context; import android.content.SharedPreferences; import android.database.Cursor; import android.os.Bundle; import android.util.AttributeSet; import android.view.ViewGroup; import com.nextgis.maplib.datasource.Field; import com.nextgis.maplibui.api.IFormControl; import com.nextgis.maplibui.util.ControlHelper; import org.json.JSONException; import org.json.JSONObject; import java.text.DecimalFormat; import java.text.DecimalFormatSymbols; import java.util.List; import java.util.Locale; import static com.nextgis.maplibui.util.ConstantsUI.JSON_ATTRIBUTES_KEY; import static com.nextgis.maplibui.util.ConstantsUI.JSON_FIELD_NAME_KEY; import static com.nextgis.maplibui.util.ConstantsUI.JSON_HIDDEN_KEY; @SuppressLint("ViewConstructor") public class Coordinates extends TextEdit implements IFormControl { protected boolean mHidden; protected double mValue; protected boolean mIsLat = false; public Coordinates(Context context) { super(context); } public Coordinates(Context context, AttributeSet attrs) { super(context, attrs); } public Coordinates(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } @Override public void init(JSONObject element, List<Field> fields, Bundle savedState, Cursor featureCursor, SharedPreferences preferences) throws JSONException { JSONObject attributes = element.getJSONObject(JSON_ATTRIBUTES_KEY); mFieldName = attributes.getString(JSON_FIELD_NAME_KEY); mHidden = attributes.optBoolean(JSON_HIDDEN_KEY); // TODO crs, format String value; if (ControlHelper.hasKey(savedState, mFieldName)) value = savedState.getString(ControlHelper.getSavedStateKey(mFieldName)); else value = getFormattedValue(); setText(value); setSingleLine(true); setEnabled(false); } @Override public void saveLastValue(SharedPreferences preferences) { } @Override public boolean isShowLast() { return mIsShowLast; } @Override public String getFieldName() { return mFieldName; } @Override public void addToLayout(ViewGroup layout) { if (!mHidden) layout.addView(this); } @Override public Object getValue() { return getText().toString(); } @Override public void saveState(Bundle outState) { outState.putString(ControlHelper.getSavedStateKey(mFieldName), getText().toString()); } public void setValue(double value) { mValue = value; } public String getFormattedValue() { DecimalFormat format = new DecimalFormat("#.######", new DecimalFormatSymbols(Locale.US)); return format.format(mValue); } public void setIsLat() { mIsLat = true; } public boolean isLat() { return mIsLat; } }