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@alphamu
alphamu / Android Privacy Policy Template
Created February 9, 2017 03:17
A template for creating your own privacy policy for Android apps. Look for "[" and "<!--" to see where you need to edit this app in order to create your own privacy olicy.
<html>
<body>
<h2>Privacy Policy</h2>
<p>[Individual or Company Name] built the [App Name] app as a [open source | free | freemium | ad-supported | commercial] app. This SERVICE is provided by [Individual or company name] [at no cost] and is intended
for use as is.</p>
<p>This page is used to inform website visitors regarding [my|our] policies with the collection, use, and
disclosure of Personal Information if anyone decided to use [my|our] Service.</p>
<p>If you choose to use [my|our] Service, then you agree to the collection and use of information in
relation with this policy. The Personal Information that [I|we] collect are used for providing and
improving the Service. [I|We] will not use or share your information with anyone except as described
@alphamu
alphamu / KeyStoreHelper.java
Last active December 28, 2023 18:22
Using Android KeyStore to generate a password. The code create a public/private key pair and uses the base64 encoded form of the certificate to as the password. The code modified the KeystoreHelper class from AOSP demo projects.
/*
* Copyright 2013 The Android Open Source Project
*
* 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
@alphamu
alphamu / TextDrawable.java
Last active May 7, 2023 16:24
An TextDrawable that can be used to draw a String. This can be used anywhere you would normally use a drawable. You can watch the demo video here: https://youtu.be/l1HgpcJhIi0
/**
* Copyright 2016 Ali Muzaffar
* <p/>
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* Unless required by applicable law or agreed to in writing, software
@alphamu
alphamu / NetworkHelper.java
Last active October 15, 2021 06:42
Gist showing the use case of a headless Fragment to check if internet is available
public class NetworkHelper extends Fragment {
public static final String TAG = "NetworkHelper";
public static final String CHECK_INTERNET = "network_connection";
private Activity mActivity;
AlertDialog mAlertDialog = null;
private BroadcastReceiver onNotice = new BroadcastReceiver() {
@Override
@alphamu
alphamu / AA Transition App theme between light and dark themes
Last active September 4, 2024 02:07
Example of how to change themes at runtime with a smooth animation. In this example, we just switch between a light and a dark theme. The activity animation is defined in the theme and as such will be default on all activities with the set theme. [Demo Video here](http://youtu.be/Ps0phswbHls).
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
public class TransitionThemeActivity extends AppCompatActivity implements View.OnClickListener {
@alphamu
alphamu / SharedPreferencesSingletonEnumKeyTemplate.java
Last active March 9, 2023 11:59
A SharedPreferences singleton that can be used to centralise and simplify reading and writing of SharedPerferences in your Android app. There are 2 versions, one that uses static String for Keys and an other that uses enums. Which one you use comes down to your preference, enums I feel provides better control when you have multiple programmers w…
#if (${PACKAGE_NAME} != "")package ${PACKAGE_NAME};#end
import android.content.Context;
import android.content.SharedPreferences;
/*
* A Singleton for managing your SharedPreferences.
*
* You should make sure to change the SETTINGS_NAME to what you want
* and choose the operating made that suits your needs, the default is
@alphamu
alphamu / CalendarDayDifference.java
Last active May 4, 2019 12:50
Returns the difference between the provided date and now. The difference is in actual calendar days rather than time difference based. This means 01/Jan/2015 23:50 and 02/Jan/2015 00:01AM has a difference of 1 day.
/**
* Returns the difference between the provided date and now.
* The difference is in actual calendar days rather than time difference based.
* This means 01/Jan/2015 23:50 and 02/Jan/2015 00:01AM has a difference of 1 day.
*
* @param date The date from which the difference to today has to be calculated.
* @return difference in calendar days.
*/
public static int getRealDayDifference(Date date) {
String timeString = null;
@alphamu
alphamu / Percentages expressed as HEX values
Last active May 4, 2019 12:52
Hexadecimal percentages from from 0 - 100 in increments of 5. These are particularly useful for alpha values in ARGB strings.
100% — FF
95% — F2
90% — E6
85% — D9
80% — CC
75% — BF
70% — B3
65% — A6
60% — 99
55% — 8C
@alphamu
alphamu / Android - DIP to PX or PX to DIP
Last active February 24, 2020 16:32
Android - DIP to PX or PX to DIP
public static int dpToPx(Context context, int dp) {
Resources r = context.getResources();
float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics());
return (int) px;
}
public static int pxToDp(Context context, int px) {
final float scale = context.getResources().getDisplayMetrics().density;
int dp = (int) (px * scale + 0.5f);
return dp;
@alphamu
alphamu / Android - get views with tag
Created November 4, 2013 12:32
Android get all views with a tag
public static ArrayList<View> getViewsByTag(ViewGroup root, String tag) {
ArrayList<View> views = new ArrayList<View>();
final int childCount = root.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = root.getChildAt(i);
if (child instanceof ViewGroup) {
views.addAll(getViewsByTag((ViewGroup) child, tag));
}
final Object tagObj = child.getTag();