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Obfuscating Android Code with Proguard

By:

First enable minifyEnabled in your build.gradle file, like

minifyEnabled true

After this, add below lines in progurad-rules.txt file

-keep class yourpackage.** { *; }
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose

For checking that its working fine go to:

http://www.javadecompilers.com/apktool website so that you can verify after decompilation.

It will work and your classes will be hidden completely.

Copyfrom: https://stackoverflow.com/questions/17290023/obfuscation-in-android-studio

http://medium/@rakawestu/obfuscating-android-code-with-proguard-d43234df9785

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Posted by on April 5, 2018 in Android, Mobile Development

 

Git

Git

$ git init
$ git remote add origin [Git URL]
$ git add .
$ git commit -m “[Message]”
$ git push origin master

 
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Posted by on March 27, 2018 in Control Version, Git

 

Change GoPath in mac

 

Open terminal:

export GOPATH=[Full path of your GO project]  // eg. /Users/username/go
export PATH=$GOPATH/bin:$PATH

 

from https://gist.github.com/molivier/271bba5d67de1583a8e3

 
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Posted by on February 14, 2018 in Go Language

 

How To Install and Use Docker on Ubuntu 16.04

By:

$ sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add –
$ sudo add-apt-repository “deb [arch=amd64] https://download.docker.com/linux/ubuntu xenial stable”
$ sudo apt-get update

$ apt-cache search docker-ce

$ sudo apt-get install docker-ce

 
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Posted by on February 13, 2018 in Docker, Ubuntu

 

Horizontal RecyclerView in Vertical RecyclerView like Google Play Store

By: 

Step: 1
======
Create two Model Classes like below.

SingleItemModel.java

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package com.pratap.gplaystore.models;

/**
 * Created by pratap.kesaboyina on 01-12-2015.
 */
public class SingleItemModel {


    private String name;
    private String url;
    private String description;


    public SingleItemModel() {
    }

    public SingleItemModel(String name, String url) {
        this.name = name;
        this.url = url;
    }


    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }


}

SectionDataModel.java

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package com.pratap.gplaystore.models;

import java.util.ArrayList;

/**
 * Created by pratap.kesaboyina on 30-11-2015.
 */
public class SectionDataModel {



    private String headerTitle;
    private ArrayList<SingleItemModel> allItemsInSection;


    public SectionDataModel() {

    }
    public SectionDataModel(String headerTitle, ArrayList<SingleItemModel> allItemsInSection) {
        this.headerTitle = headerTitle;
        this.allItemsInSection = allItemsInSection;
    }



    public String getHeaderTitle() {
        return headerTitle;
    }

    public void setHeaderTitle(String headerTitle) {
        this.headerTitle = headerTitle;
    }

    public ArrayList<SingleItemModel> getAllItemsInSection() {
        return allItemsInSection;
    }

    public void setAllItemsInSection(ArrayList<SingleItemModel> allItemsInSection) {
        this.allItemsInSection = allItemsInSection;
    }


}

Step: 2
======
Create an Activity with RecyclerView to show the list in vertical order.

MainActivity.java

 

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package com.pratap.gplaystore;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;

import com.pratap.gplaystore.adapters.RecyclerViewDataAdapter;
import com.pratap.gplaystore.models.SectionDataModel;
import com.pratap.gplaystore.models.SingleItemModel;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    private Toolbar toolbar;


    ArrayList<SectionDataModel> allSampleData;


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

        toolbar = (Toolbar) findViewById(R.id.toolbar);

        allSampleData = new ArrayList<SectionDataModel>();

        if (toolbar != null) {
            setSupportActionBar(toolbar);
            toolbar.setTitle("G PlayStore");

        }


        createDummyData();


        RecyclerView my_recycler_view = (RecyclerView) findViewById(R.id.my_recycler_view);

        my_recycler_view.setHasFixedSize(true);

        RecyclerViewDataAdapter adapter = new RecyclerViewDataAdapter(this, allSampleData);

        my_recycler_view.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));

        my_recycler_view.setAdapter(adapter);


    }

    public void createDummyData() {
        for (int i = 1; i <= 5; i++) {

            SectionDataModel dm = new SectionDataModel();

            dm.setHeaderTitle("Section " + i);

            ArrayList<SingleItemModel> singleItem = new ArrayList<SingleItemModel>();
            for (int j = 0; j <= 5; j++) {
                singleItem.add(new SingleItemModel("Item " + j, "URL " + j));
            }

            dm.setAllItemsInSection(singleItem);

            allSampleData.add(dm);

        }
    }
}

Create an XML Layout for the above activity class

activity_main.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        android:elevation="8dp"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />


    <android.support.v7.widget.RecyclerView
        android:id="@+id/my_recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scrollbars="none" />


</LinearLayout>

Step: 3
======
Now Create an Adapter Class for the recyclerView in the MainActivity.


RecyclerViewDataAdapter.java

 

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package com.pratap.gplaystore.adapters;

/**
 * Created by pratap.kesaboyina on 24-12-2014.
 */
import android.content.Context;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.pratap.gplaystore.R;
import com.pratap.gplaystore.models.SectionDataModel;

import java.util.ArrayList;

public class RecyclerViewDataAdapter extends RecyclerView.Adapter<RecyclerViewDataAdapter.ItemRowHolder> {

    private ArrayList<SectionDataModel> dataList;
    private Context mContext;

    public RecyclerViewDataAdapter(Context context, ArrayList<SectionDataModel> dataList) {
        this.dataList = dataList;
        this.mContext = context;
    }

    @Override
    public ItemRowHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_item, null);
        ItemRowHolder mh = new ItemRowHolder(v);
        return mh;
    }

    @Override
    public void onBindViewHolder(ItemRowHolder itemRowHolder, int i) {

        final String sectionName = dataList.get(i).getHeaderTitle();

        ArrayList singleSectionItems = dataList.get(i).getAllItemsInSection();

        itemRowHolder.itemTitle.setText(sectionName);

        SectionListDataAdapter itemListDataAdapter = new SectionListDataAdapter(mContext, singleSectionItems);

        itemRowHolder.recycler_view_list.setHasFixedSize(true);
        itemRowHolder.recycler_view_list.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false));
        itemRowHolder.recycler_view_list.setAdapter(itemListDataAdapter);


        itemRowHolder.btnMore.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {


                Toast.makeText(v.getContext(), "click event on more, "+sectionName , Toast.LENGTH_SHORT).show();



            }
        });


       /* Glide.with(mContext)
                .load(feedItem.getImageURL())
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .centerCrop()
                .error(R.drawable.bg)
                .into(feedListRowHolder.thumbView);*/
    }

    @Override
    public int getItemCount() {
        return (null != dataList ? dataList.size() : 0);
    }

    public class ItemRowHolder extends RecyclerView.ViewHolder {

        protected TextView itemTitle;

        protected RecyclerView recycler_view_list;

        protected Button btnMore;



        public ItemRowHolder(View view) {
            super(view);

            this.itemTitle = (TextView) view.findViewById(R.id.itemTitle);
            this.recycler_view_list = (RecyclerView) view.findViewById(R.id.recycler_view_list);
            this.btnMore= (Button) view.findViewById(R.id.btnMore);


        }

    }

}

Now create an xml Layout file for the above adapter class.

list_item.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"

    android:background="?android:selectableItemBackground"
    android:orientation="vertical"
    android:padding="5dp">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="2dp">


        <TextView
            android:id="@+id/itemTitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_centerVertical="true"
            android:layout_gravity="center_vertical"
            android:layout_toLeftOf="@+id/btnMore"
            android:text="Sample title"
            android:textColor="@android:color/black"
            android:textSize="18sp" />

        <Button
            android:id="@+id/btnMore"
            android:layout_width="wrap_content"
            android:layout_height="42dp"
            android:layout_alignParentEnd="true"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:theme="@style/MyButton"
            android:text="more"
            android:textColor="#FFF" />


    </RelativeLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view_list"
        android:layout_width="match_parent"
        android:layout_height="160dp"
        android:layout_gravity="center_vertical"
        android:orientation="horizontal" />


</LinearLayout>

Step: 4
======

Now , In order to make a horizontal RecyclerView , we need create a layout and Adapter class for each row.

list_single_card.xml

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<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    app:cardCornerRadius="5dp"
    app:cardUseCompatPadding="true"
    >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="0dp"
        android:background="?android:selectableItemBackground"
        android:orientation="vertical">

        <ImageView
            android:id="@+id/itemImage"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_gravity="center_horizontal"
            android:scaleType="fitCenter"
            android:src="@drawable/android" />


        <TextView
            android:id="@+id/tvTitle"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/itemImage"
            android:gravity="center"
            android:padding="5dp"
            android:text="Sample title"
            android:textColor="@android:color/black"
            android:textSize="18sp" />


    </LinearLayout>

</android.support.v7.widget.CardView>

 


The Adapter Class for Horizontal RecyclerView


SectionListDataAdapter.java

 

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package com.pratap.gplaystore.adapters;

/**
 * Created by pratap.kesaboyina on 24-12-2014.
 */

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.pratap.gplaystore.R;
import com.pratap.gplaystore.models.SingleItemModel;

import java.util.ArrayList;

public class SectionListDataAdapter extends RecyclerView.Adapter<SectionListDataAdapter.SingleItemRowHolder> {

    private ArrayList<SingleItemModel> itemsList;
    private Context mContext;

    public SectionListDataAdapter(Context context, ArrayList<SingleItemModel> itemsList) {
        this.itemsList = itemsList;
        this.mContext = context;
    }

    @Override
    public SingleItemRowHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_single_card, null);
        SingleItemRowHolder mh = new SingleItemRowHolder(v);
        return mh;
    }

    @Override
    public void onBindViewHolder(SingleItemRowHolder holder, int i) {

        SingleItemModel singleItem = itemsList.get(i);

        holder.tvTitle.setText(singleItem.getName());


       /* Glide.with(mContext)
                .load(feedItem.getImageURL())
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .centerCrop()
                .error(R.drawable.bg)
                .into(feedListRowHolder.thumbView);*/
    }

    @Override
    public int getItemCount() {
        return (null != itemsList ? itemsList.size() : 0);
    }

    public class SingleItemRowHolder extends RecyclerView.ViewHolder {

        protected TextView tvTitle;

        protected ImageView itemImage;


        public SingleItemRowHolder(View view) {
            super(view);

            this.tvTitle = (TextView) view.findViewById(R.id.tvTitle);
            this.itemImage = (ImageView) view.findViewById(R.id.itemImage);


            view.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {


                    Toast.makeText(v.getContext(), tvTitle.getText(), Toast.LENGTH_SHORT).show();

                }
            });


        }

    }

}

ScreenShots
=========

Source code
========
DropBox Link

Demo
========

Copy from: http://android-pratap.blogspot.com/2015/12/horizontal-recyclerview-in-vertical.html

 
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Posted by on February 8, 2018 in Android, Mobile Development

 

Install Parse Server

Prerequisites

  1. Mongodb
  2. Nodejs

    $ curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
    $ sudo apt-get install -y nodejs
  3. Settup Parse Server
  4. Setup Parse Dashboard

 

var dashboard = new ParseDashboard({

  “apps”: [

    {

      “serverURL”: “http://192.168.92.128:1337/parse”,

      “appId”: “ChindaKey”,

      “masterKey”: “MchindaKey”,

      “appName”: “MyApp”

    }

  ],

  users: [{

    user: “admin”,

    pass: “admin”

  }]

}, {

  allowInsecureHTTP: true

});

https://tecadmin.net/install-parse-server-on-ubuntu/

https://github.com/parse-community/parse-dashboard

https://github.com/parse-community/parse-dashboard

https://nodejs.org/en/download/package-manager/

 

 
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Posted by on January 8, 2018 in Parse

 

How to use Adobe XD full version in Windows

 

 

  1. Download from https://mega.nz/#!lGYQwLpD!UWZLmXJeoG71SCvoUnCm6nrRthXuHje5vyQTKyLFRzc
  2. Copy file “amtlib.dll” to replace in C:\Program Files\WindowsApps\[Adode XD folder]\
  3. Done
 
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Posted by on December 27, 2017 in Adobe XD, General, Prototypes