AndroidSketchpad

Hello visitors,

After a long gap, I bring a post for you.
I don't like to waste your time anymore.

Let's start-
Today, I will write about a new library. The Library is about for android theming and color plate.

First of all, see some screenshot-

So you can see that this library has an awesome theme list. You can use this list and with your own additional list. You can also remove this list and use your own theme list.
It has a built-in night mode icon that switches On and Off night mode. The biggest advantage of this library is If you don't like this option you can turn off by one line of code.
See another screenshot (here night mode is enabled)

So you can see that this is highly customizable.
Enough intro lets get started-

Welcome to this post.

In this post, I am going to cover Android Search View with Recent Search Suggestion.

In a previous post, I already cover Android Material SearchView. In that post, I use a 3rd party library. If you want to use 3rd party library to add search functionality, see this post. Android Material SearchView

But Now I don't want to use any 3rd party library.
In this post, I use:

• Search Widget

Welcome to this post.

In this post, I am going to discussing a new topic that is android runtime permission.

What is runtime permission?
Basically, when we want to access some data on the device or want to make a network request from our app, we need user permission.Basically, we need to write the permissions on the AndroidMenifest.xml
AndroidMenifest.xml

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

if the user installs the app, the user must accept the permissions that we write on AndroidMenifest.xml
But in Android 6.0 API 23
The Android team want to give more control to the user and now user can install without accepting all the permission.
For an example, we want to access to the storage(external storage), so we need permission first. Now we promote to the user to accept the permission in the app runtime to access the storage.
If the user does not accept the permission that means we do not access the storage.

Welcome to this series post.
In this series post, we are going to create a complete Settings for a productive app.

We already published a post-

• Android Settings Series (part 1)

Welcome to this Series post.
In this series post, we are going to create a complete Settings for a productive app.

Basic overview of our final settings?

Our final settings contains-

•  multiple preference screen 

So we create multiple preference screen in the same XML file and after user click, we replace the fragment.
That's the deal,
Lets Start-

Welcome to this post.
In this post, we are going to learn how to use google chrome custom tab in our app.

In our app, we basically use webview for loading a web address. Or sometimes we make an intent that opens other browser and loads the web address.

But why we use Chrome custom tab?
Chrome custom tabs offer apps additional management over their internet expertise and build transitions between native and web content more seamless while not having to resort to a WebView.

Is any customization support? 
yes. Chrome custom tab supports some customization-

• Toolbar color 
• Enter and exit animations 
• Add custom actions to the Chrome toolbar and overflow menu 

It also allows the developer to pre-start Chrome and pre-fetch content for faster loading.

Ok, Lets Start
First, add the below line in your build.gradle file

//chrome custom tab
compile 'com.android.support:customtabs:26.1.0'

Now create a method-

private void customTab(String url){
}

create a builder object

CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();

set toolbar color

builder.setToolbarColor(R.attr.colorPrimary);

set title is shown or not

builder.setShowTitle(false);

now build chrome custom intent

CustomTabsIntent customTabsIntent = builder.build();

now launch the URL

customTabsIntent.launchUrl(this, Uri.parse(url));

full code of this method

private void customTab(String url){
        CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
        builder.setToolbarColor(R.attr.colorPrimary);
        builder.setShowTitle(false);
        // add share action to menu list
        builder.addDefaultShareMenuItem();
        CustomTabsIntent customTabsIntent = builder.build();
        customTabsIntent.launchUrl(this, Uri.parse(url));

    }

you can use this method anywhere. you just pass a web address.

Now make some customization- 
Menu:
add menu action button for default share action button

builder.addDefaultShareMenuItem();

want to custom share action button

builder.setActionButton(icon, description, pendingIntent, tint);

here, add a menu item

builder.addMenuItem(menuItemTitle, menuItemPendingIntent);

Animation:
add enter and exit animation

builder.setStartAnimations(this, R.anim.slide_in_right, R.anim.slide_out_left);
builder.setExitAnimations(this, R.anim.slide_in_left, R.anim.slide_out_right);

 that's it today post.
Want to customize more, then don't forget to check the official document of chrome custom tab

Thank you for reading this post.
Happy coding

All the common android code list that used almost every android project.

Here is the list of all code in this post:

• Support vector drawable
• PreferenceFragment support
• Java 8 support

Support vector drawable:
to support vector drawable add below line on the build.gradle file

compile 'com.android.support:support-vector-drawable:26.1.0'

also adds below line on those activities where you use vector drawable.

static {
    AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
}

add the following line on the build.gradle file

compile 'com.android.support:preference-v14:26.1.0'

adds also add below line on the style.XML file

<item name="preferenceTheme">@style/PreferenceThemeOverlay.v14.Material</item>

note: This line is for Material Theme support.

to support Java 8 add following line on the build.gradle file

// Keep the following configuration in order to target Java 8.
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}

Welcome to this post.

In this post, we are going to make awesome app into for android app.

we just finished all code for adding share action prover. But ...

we can do this also various way, here is another one,
Create a global Variable of ShareActionProvider and initialize it on the on Create menu option (same as previous) now create an Intent where you have data and bind your data on and set this intent to ShareActionProvider variable
see the code:

Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
String s = "welome to Android SketchPad";
shareIntent.putExtra(Intent.EXTRA_TEXT, s);

if (myShareActionProvider != null) {
    myShareActionProvider.setShareIntent(shareInten);
}
       

If you are using loader manager then do this task on the onLoadFinished() method

Fix app crashing: 
If you use proguard in your project, then your app will be crashed on release mode. To fix this you need to add below line on the proguard-project.txt

-keep class android.support.v7.widget.ShareActionProvider { *; }

Final screen shot:


Another One:


That's it:
That's the ending of today code. now you can add this option to your app. In this post, I just show you a basic tutorial about share action provider. In share action provider I just share text, but you can share image, document, video, audio and much more.

Thanks for reading this post.
Happy coding.

Welcome to this post. In this post, I am going to discuss on Android Splash Screen.



In this whole post, I gonna cover those topics
1. How to create android Splash Screen
2. How to override default color when app launching (windows background)

When you click app icon, the app takes some time to start. To overcome this option android by default show a color until the activity is launched. By default, it is white in color. So later in this post, I will show you how to overcome this situation and how to change this default color.

Let's start-

Create an Activity named it as your choice



now design your layout file. I just provide my XML code.

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.blogspot.shudiptotrafder.soilscience.SplashActivity"
    tools:showIn="@layout/activity_splash"
    android:background="?attr/colorPrimary">

    <ImageView
        android:id="@+id/splash_imageView"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        app:srcCompat="@drawable/ic_lover"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_marginStart="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginEnd="8dp"
        android:contentDescription="app icon"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="80dp"
        tools:ignore="HardcodedText" />

    <TextView
        android:id="@+id/splash_app"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="App Name"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_marginStart="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginEnd="8dp"
        android:layout_marginTop="16dp"
        android:textSize="30sp"
        app:layout_constraintTop_toBottomOf="@+id/splash_imageView" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toBottomOf="@+id/splash_app"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginTop="16dp"
        android:id="@+id/splash_appAbout"
        android:text="This is a complete app"
        android:textSize="16sp"
        app:layout_constraintEnd_toEndOf="parent" />

</android.support.constraint.ConstraintLayout>

and ic_lover.xml it as vector drawable, code here

<vector android:height="24dp"
    android:viewportHeight="512.0"
    android:viewportWidth="512.0"
    android:width="24dp"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <path
        android:fillColor="#FF6464"
        android:pathData="M0,173.5C0,96 62.9,33.1 140.4,33.1c34.4,0 65.9,12.4 90.3,32.9c14.7,12.3 36,12.3 50.7,0c24.4,-20.5 55.9,-32.9 90.3,-32.9C449.1,33.1 512,96 512,173.5v-4.1c0,136.1 -165.6,258.9 -230.4,301.8c-15.5,10.3 -35.7,10.3 -51.2,0C165.6,428.3 0,305.5 0,169.4" />
    <path
        android:fillColor="#D2555A"
        android:pathData="M0,173.5c0,-0.6 0.1,-1.2 0.1,-1.8C0.1,171 0,170.2 0,169.4V173.5z" />
    <path
        android:fillColor="#D2555A"
        android:pathData="M114.8,182.7c-0,0.6 -0.1,1.3 -0.1,1.9v-4.5C114.8,181 114.8,181.9 114.8,182.7c0.5,-66.9 29.4,-123.3 69.2,-142.5c-13.7,-4.5 -28.4,-7.1 -43.6,-7.1c-76.9,0 -139.3,61.9 -140.3,138.6c1.9,135.2 165.9,256.8 230.3,299.4c6.6,4.4 14.1,6.8 21.6,7.4C198.9,418.8 116,306 114.8,182.7z" />
    <path
        android:fillColor="#FF8B8B"
        android:pathData="M449.5,153.9m-32,0a32,32 0,1 1,64.1 0a32,32 0,1 1,-64.1 0" />
    <path
        android:fillColor="#FFC1C1"
        android:pathData="M408.4,92.8m-20,0a20,20 0,1 1,40.1 0a20,20 0,1 1,-40.1 0" />
</vector>

We finished our design option, see the preview

it contains an ImageView and two TextView

now time for java coding, SplashScreen.java

public class SplashScreen extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);

    }

now create an instance of Thread class and in the run methods call sleep methods and pass value 1000 (1000 for 1s, the value of Mille seconds). Don't forget to put this sleep method on try-catch block. and finally, block on try-catch, create an Intent that brings us to MainActivity. At list call finish() method and this activity will be destroyed.
See the code-

Thread checkForData = new Thread(){
      @Override
      public void run() {
            super.run();
            try{
            sleep(1000);

         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             startActivity(new Intent(SplashActivity.this,
                            MainActivity.class));
             finish();
         }
     }
};

start this thread by calling start method

checkForData.start();

That's it. Splash Screen is created successfully. You can run a test for see result.

oh! Your app is not working. I forget one thing that we are using vector drawable. If your app minimum API is 21 then you have no headache. but if you targeting lower API you need to use support library to support vector drawable for lower API. To do that add below line in your build.gradle file

compile 'com.android.support:support-vector-drawable:25.3.1'

Note: change the version according to you compile SDK version. See mine-

compileSdkVersion 25
buildToolsVersion "25.0.3"

One more thing to go. add below code in your activity class

static {
    AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
}

ok, run the app again.

Screen Short:

Note: Don't be confused I use another app splash screen. Both are used the same code.

Now come on the last topics of this post, create a new theme on style.xml and add windows background color

<style name="splashTheme" parent="AppTheme.NoActionBar">
        <item name="android:windowBackground">@color/colorPrimary</item>
</style>

use this theme on the splash screen activity. Open manifest file and override below code-

<activity
       android:name=".SplashScreen"
       android:label="@string/app_name"
       android:theme="@style/splashTheme">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
          </intent-filter>
</activity>

and my color code is

<color name="colorPrimary">#3F51B5</color>

rerun your app and see the change.

See Screen Short:


A Bonus for you
I also show you how to animate this splash screen. This is the pretty basic animation example.
Let's do this
create an XML file on res -> anim folder.
splash_screen_animation.xml

<alpha
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromAlpha="0"
    android:toAlpha="1"
    android:duration = "1000" />

Now load this animation, see code-

Animation set = AnimationUtils.loadAnimation(this,
                R.anim.splash_screen_animation);

In the upper activity code, we don't create view variable, because we don't need that time. But now we need those views add set this animation with those views. Create view and assign it by calling findViewById()

ImageView imageView = (ImageView) findViewById(R.id.splash_imageView);
TextView app = (TextView) findViewById(R.id.splash_app);
TextView appAbout = (TextView) findViewById(R.id.splash_appAbout);

set animation with those views and also start the animation

//set animation
imageView.setAnimation(set);
app.setAnimation(set);
appAbout.setAnimation(set);

//start animation
set.start();

That's it now run the app again and see the animation on your splash screen.

Are you confused about this class SplashScreen.java code?
See all the call code below:

public class SplashScreen extends AppCompatActivity {

    static {
        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);

        ImageView imageView = (ImageView) findViewById(R.id.splash_imageView);
        TextView app = (TextView) findViewById(R.id.splash_app);
        TextView appAbout = (TextView) findViewById(R.id.splash_appAbout);


        Animation set = AnimationUtils.loadAnimation(this,
                R.anim.splash_screen_animation);

        //set animation
        imageView.setAnimation(set);
        app.setAnimation(set);
        appAbout.setAnimation(set);

        //start animation
        set.start();

        Thread checkForData = new Thread(){
            @Override
            public void run() {
                super.run();
                try{
                    sleep(1000);

                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    startActivity(new Intent(SplashActivity.this,
                            MainActivity.class));
                    finish();
               }
             }
         };
        checkForData.start();

    }
}

See full video:

Note: in this video, you can also see the app intro. Link is here: Create Android Material App Intro

That's it 
now you can create a splash screen and also override the loading screen. In this example, I use just the only color but you can also use drawable in the loading time. So it's your choice what you used un your project.

That finished this post.
Why you wasting your time, create an awesome splash screen for your existing or next project?

Thank you for reading this post.
Happy coding.

Welcome to this post. In this post, we are going to discuss android text to speech.
Before the start, check the official documentation of Android text to speech.

In my case, I use this option with a fab (Floating action button). When the user clicks on this fab button this text to speech is triggered and user heard the speech.
Let's start,
Implement TextToSpeech.OnIntListener on your activity class.

public class DetailsActivity extends AppCompatActivity implements
        TextToSpeech.OnInitListener {
}

Create an instance of TextToSpeech Class

private TextToSpeech toSpeech;

override onIint() methods and follow below steps:
 1. First, we need to check if Text to speech engine is installed or not

if (status != TextToSpeech.ERROR) {
}

2. If the status is not erroring then we set a default language, we set here the US as default.

int result = toSpeech.setLanguage(Locale.US);

3. now check language data is missing or not supported or not installed then we start for install this text to speech engine.

if (result == TextToSpeech.LANG_MISSING_DATA ||
    result == TextToSpeech.LANG_NOT_SUPPORTED ||
    result == TextToSpeech.ERROR_NOT_INSTALLED_YET) {

      Intent installIntent = new Intent();
      installIntent.setAction(
              TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
      startActivity(installIntent);

}

if you missing something check the full code of onInit() method

@Override
    public void onInit(int status) {

        if (status != TextToSpeech.ERROR) {

            int result = toSpeech.setLanguage(Locale.US);

            if (result == TextToSpeech.LANG_MISSING_DATA ||
                    result == TextToSpeech.LANG_NOT_SUPPORTED ||
                    result == TextToSpeech.ERROR_NOT_INSTALLED_YET) {

                Intent installIntent = new Intent();
                installIntent.setAction(
                        TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
                startActivity(installIntent);

            }

        }
    }

Create a method and add a single parameter, word as String. In my case, I named it as setTTS() and parameter is word as String,
setTTS(String selectedWord)

private void setTTS(String selectedWord) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            toSpeech.speak(selectedWord, TextToSpeech.QUEUE_FLUSH, null, null);

        } else {
            toSpeech.speak(selectedWord, TextToSpeech.QUEUE_FLUSH, null);
        }

    }

Note: below methods is deprecated. So check if the device is lollipop and higher then use utterance as an extra parameter.

One more thing to go.
We need to shut down this TextToSpeech engine when the activity is destroyed. but before we need to check textToSpeech is null or not to avoid any error. If it is not null the call stop and shutdown method. see the code

@Override
protected void onDestroy() {
   super.onDestroy();
   if (toSpeech != null) {
       toSpeech.stop();
       toSpeech.shutdown();
    }
}

That's it 
you finished writing coding. Now call setTTS() method from anywhere in your project. You can use it as Button onClick or TextView onClick. Just pass a string parameter and call the method. As I told you, at the beginning of this post I am using this option in a fab button. you can that code by the following link. But don't be confused. This is the full activity code, so there is a lot of things with TextToSpeech. Click GitHub link.

Now you can use this code. Hope you understand this TextToSpeech logic. and you will be you use this option in your next or existing project.

Thanks for reading this post.
Happy coding.

welcome to firebase series.

In this post, we are going to learn about how to connect firebase from the android studio. This is the easiest methods ever.
we can directly connect firebase through the android studio.
Let's start-
open any project or create the new project
I am going throw picture by picture. Follow picture to picture for completing this process.

In android studio click tool and select firebase.
after click that it will open this window

implementation 'com.google.firebase:firebase-auth:11.2.0'

Now create an instance of FirebaseAuth class
see the code-

val mAuth = FirebaseAuth.getInstance()

use signInAnonymously() method and add a complete listener. if the task is successful we show a message that Authentication is successful and also user id. if failed then we will show a fail message.

mAuth.signInAnonymously()
     .addOnCompleteListener(this, { task ->
         if (task.isSuccessful) {
                val user = mAuth.currentUser
                Toast.makeText(this, "Authentication successful. user id ${user.uid}",
                                Toast.LENGTH_SHORT).show()

            } else {
                // If the sign in fails displays a message to the user.
                Toast.makeText(this, "Authentication failed.",
                                Toast.LENGTH_SHORT).show()

                    }
                })

That's it coding see the final screen short in the firebase console

Welcome to this post. In this post, we are going to discuss how to share code on Git from Android Studio.

(I don't want to describe what is GitHub or why you need to use git. I just want to show you the process only)
Let's jump in.

Before share, you need to create a GitHub account click here for GitHub account.
After creating a GitHub account, you can now share your code into GitHub.

Open android studio. Now open an exciting project that you want to share.
Click on VCS on the main toolbar.
then import into version
after Share project on GitHub
Like below picture

You will get an error. To fix this error you need to add an SSH key.

Open git-bash


To add this you need to check first if you have any key open git-bash.
Now enter the command

ls -al ~/.ssh

if the key already exists you can jump on the copy to clip bord option.
If the key does not exist then you need to create a new key.
Follow this command-

ssh-keygen -t rsa -b 4096 -C "your@email.com"

in your@email.com you need to write your email that you used in GitHub account.

it will show-

Generating public/private rsa key pair.

When you're prompted to "Enter a file in which to save the key," press Enter if you want to save those file in the default location.

Enter a file in which to save the key (/c/Users/you/.ssh/id_rsa):[Press enter]

now enter your password.
Note for the beginner: If you enter your password it will not showing anything (even no start).

Enter passphrase (empty for no passphrase): [Type a passphrase]
Enter same passphrase again: [Type passphrase again]

your password must be same. your SSH key is created.
Now you need to add your SSH key to the ssh-agent before adding, you need to ensure the ssh-agent is running: to run ssh-agent-

eval $(ssh-agent -s)

Now add your ssh private key to ssh-agent

ssh-add ~/.ssh/id_rsa

Now run this command this command will copy the key into you clip bord.

clip < ~/.ssh/id_rsa.pub

show the picture

Time to add this key into you Github account.
Login your GitHub and go to Settings.
Select SSH and GPG key Now click New SSH key.



write the title as you want and the key will be your copied key.
press ctrl+c button to paste the copied key.
and save this by pressing add SSH key.

That's it. It will be working fine

Now click on
VCS on the main toolbar.
then import into version
after Share project on GitHub

it will show like below picture


if you are not logged in then it will prompt to login. Log in through your Github user name, and pass.

After login, it will show like this-