Java tutorial
/* * Copyright 2016 TIBCO Software,Inc.All rights reserved. * http://community.jaspersoft.com/project/jaspermobile-android * * Unless you have purchased a commercial license agreement from TIBCO Jaspersoft, * the following license terms apply: * * This program is part of TIBCO Jaspersoft Mobile for Android. * * TIBCO Jaspersoft Mobile is free software:you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation,either version 3of the License,or * (at your option)any later version. * * TIBCO Jaspersoft Mobile 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 General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with TIBCO Jaspersoft Mobile for Android.If not,see * <http://www.gnu.org/licenses/lgpl>. */ package com.jaspersoft.android.jaspermobile.dialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.FragmentManager; import android.support.v7.app.AlertDialog; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.ViewGroup; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.NumberPicker; import com.jaspersoft.android.jaspermobile.R; import org.androidannotations.annotations.EFragment; import org.androidannotations.annotations.SystemService; /** * @author Tom Koptel * @since 1.9 */ @EFragment public class NumberPickerDialogFragment extends BaseDialogFragment implements DialogInterface.OnShowListener, DialogInterface.OnClickListener { private final static String MIN_VALUE_ARG = "min_value"; private final static String MAX_VALUE_ARG = "max_value"; private final static String CURRENT_VALUE_ARG = "mSelectedValue"; private int mMinValue; private int mMaxValue; private int mSelectedValue; private EditText etNumber; private NumberPicker numberPicker; @SystemService protected InputMethodManager inputMethodManager; @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); ViewGroup customView = (ViewGroup) LayoutInflater.from(getActivity()).inflate(R.layout.number_dialog_layout, (ViewGroup) getView(), false); numberPicker = (NumberPicker) customView.findViewById(R.id.numberPicker); numberPicker.setMinValue(mMinValue); numberPicker.setMaxValue(mMaxValue); int inputId = getActivity().getResources().getIdentifier("numberpicker_input", "id", "android"); etNumber = (EditText) numberPicker.findViewById(inputId); etNumber.addTextChangedListener(new PickerTextWatcher()); builder.setTitle(R.string.dialog_current_page); builder.setView(customView); builder.setCancelable(true); builder.setPositiveButton(R.string.ok, this); builder.setNegativeButton(R.string.cancel, this); AlertDialog dialog = builder.create(); if (savedInstanceState == null) { dialog.setOnShowListener(this); } return dialog; } @Override public void onShow(DialogInterface dialog) { numberPicker.setValue(mSelectedValue); } @Override public void onClick(DialogInterface dialog, int which) { if (which == DialogInterface.BUTTON_POSITIVE && mDialogListener != null) { ((NumberDialogClickListener) mDialogListener).onNumberPicked(numberPicker.getValue(), requestCode); } inputMethodManager.hideSoftInputFromWindow(etNumber.getWindowToken(), 0); } @Override protected Class<NumberDialogClickListener> getDialogCallbackClass() { return NumberDialogClickListener.class; } protected void initDialogParams() { super.initDialogParams(); Bundle args = getArguments(); if (args != null) { if (args.containsKey(MIN_VALUE_ARG)) { mMinValue = args.getInt(MIN_VALUE_ARG); } if (args.containsKey(MAX_VALUE_ARG)) { mMaxValue = args.getInt(MAX_VALUE_ARG); } if (args.containsKey(CURRENT_VALUE_ARG)) { mSelectedValue = args.getInt(CURRENT_VALUE_ARG); } } } public static NumberDialogFragmentBuilder createBuilder(FragmentManager fragmentManager) { return new NumberDialogFragmentBuilder(fragmentManager); } //--------------------------------------------------------------------- // Dialog Builder //--------------------------------------------------------------------- public static class NumberDialogFragmentBuilder extends BaseDialogFragmentBuilder<NumberPickerDialogFragment> { public NumberDialogFragmentBuilder(FragmentManager fragmentManager) { super(fragmentManager); } public NumberDialogFragmentBuilder setMinValue(int minValue) { args.putInt(MIN_VALUE_ARG, minValue); return this; } public NumberDialogFragmentBuilder setMaxValue(int maxValue) { args.putInt(MAX_VALUE_ARG, maxValue); return this; } public NumberDialogFragmentBuilder setCurrentValue(int value) { args.putInt(CURRENT_VALUE_ARG, value); return this; } @Override protected NumberPickerDialogFragment build() { return new NumberPickerDialogFragment_(); } } //--------------------------------------------------------------------- // Dialog Callback //--------------------------------------------------------------------- public interface NumberDialogClickListener extends DialogClickListener { void onNumberPicked(int number, int requestCode); } //--------------------------------------------------------------------- // Nested classes //--------------------------------------------------------------------- private class PickerTextWatcher implements TextWatcher { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence sequence, int start, int before, int count) { try { int value = Integer.valueOf(String.valueOf(sequence)); if (value >= numberPicker.getMinValue() && value <= numberPicker.getMaxValue()) { numberPicker.setValue(value); } } catch (NumberFormatException ex) { // swallow error } } @Override public void afterTextChanged(Editable s) { } } }