Android

Saturday, 1 April 2017

Dyanamic ImageLoading in Android RecyclerView

Step 1:
gradle

compile 'com.android.support:appcompat-v7:25.0.1'

compile 'com.android.support:design:25.0.1'

compile 'com.android.support:support-v4:25.0.1'

compile 'com.android.support:recyclerview-v7:25.0.1'

compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'

Step 2:

Manifests

<!-- if you want to load images from the internet -->
<uses-permission android:name="android.permission.INTERNET" />

<!-- if you want to load images from a file OR from the internet -->
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />



<application    android:name=".ApplicationName"
    android:allowBackup="true"    
android:icon="@mipmap/ic_launcher"  
  android:label="@string/app_name"
    android:supportsRtl="true"    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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





Step3:
Java File:
import android.app.Application;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.Signature;
import android.util.Base64;
import android.util.Log;

import com.fastxpo.android.fnbdelivery.utils.Utils;
import com.loopj.android.http.RequestParams;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.assist.QueueProcessingType;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;



/** * Created by karthic on 18-12-2015. */public class ApplicationName extends Application {
    public static String deviceId;

    @Override    public void onCreate() {
        super.onCreate();
        initImageLoader(getApplicationContext());
        LoadDeviceId();

        try {
            PackageInfo info = getPackageManager().getPackageInfo(
                    "com.gurubhai.fast",
                    PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                Log.d("KeyHash:",md+ Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
        } catch (PackageManager.NameNotFoundException e) {

        } catch (NoSuchAlgorithmException e) {

        }
    }


    public static void initImageLoader(Context context) {
        ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
                .threadPriority(Thread.NORM_PRIORITY - 2)
                .denyCacheImageMultipleSizesInMemory()
                .discCacheFileNameGenerator(new SHA256FileNameGenerator())
                .tasksProcessingOrder(QueueProcessingType.LIFO)
                .build();
        ImageLoader.getInstance().init(config);
    }

}





ImageDownloaderListener.java:



import android.graphics.Bitmap;

public interface ImageDownloaderListener {
    public void imageDownloadComplete(Bitmap bitmap);

    public void imageDownloadFailed();
}





ImageLoader.java:

import android.graphics.Bitmap;
import android.view.View;
import android.widget.ImageView;
import com.fastxpo.android.fnbdelivery.common.ApiConstants;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.core.listener.ImageLoadingListener;


public class ImageLoader {
    private com.nostra13.universalimageloader.core.ImageLoader imageLoader;
    private DisplayImageOptions options;
    private ImageDownloaderListener imageDownloaderListener;

    public ImageLoader(int onLoading, int onFailed) {
        try {
            imageLoader = com.nostra13.universalimageloader.core.ImageLoader.getInstance();
            options = new DisplayImageOptions.Builder()
                    .showImageOnLoading(onLoading)
                    .showImageForEmptyUri(onFailed)
                    .showImageOnFail(onFailed)
                    .cacheInMemory(true)
                    .cacheOnDisc(true)
                    .considerExifParams(true)
                    .bitmapConfig(Bitmap.Config.ARGB_8888)
                    .build();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    public void displayImage(String url, ImageView imageView) {
        imageLoader.displayImage(ApiConstants.SERVER_URL + ApiConstants.IMAGEPATH + url, imageView, options);
    }

    public Bitmap getBitmap(String imageUrl) {
        final Bitmap[] bitmap = {null};
        imageLoader.loadImage(imageUrl, new ImageLoadingListener() {

            @Override            public void onLoadingStarted(String imageUri, View view) {
            }

            @Override            public void onLoadingFailed(String imageUri, View view,
                                        FailReason failReason) {
                if (imageDownloaderListener != null) {
                    imageDownloaderListener.imageDownloadFailed();
                }
            }

            @Override            public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
                if (imageDownloaderListener != null) {
                    imageDownloaderListener.imageDownloadComplete(loadedImage);
                    bitmap[0] = loadedImage;
                }
            }

            @Override            public void onLoadingCancelled(String imageUri, View view) {
                if (imageDownloaderListener != null) {
                    imageDownloaderListener.imageDownloadFailed();
                }
            }
        });
        return bitmap[0];
    }

    public void pause() {
        imageLoader.pause();
    }

    public void resume() {
        imageLoader.resume();
    }

    public void clearCache() {
        imageLoader.clearDiscCache();
        imageLoader.clearMemoryCache();
    }

    public void stop() {
        imageLoader.stop();
    }


}



SHA256FileNameGenerator.java

import com.nostra13.universalimageloader.cache.disc.naming.FileNameGenerator;
import com.nostra13.universalimageloader.utils.L;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class SHA256FileNameGenerator implements FileNameGenerator {

   private static final String HASH_ALGORITHM = "SHA256";
   private static final int RADIX = 10 + 26; // 10 digits + 26 letters
   @Override   public String generate(String imageUri) {
      byte[] sha256 = getSHA256(imageUri.getBytes());
      BigInteger bi = new BigInteger(sha256).abs();
      return bi.toString(RADIX);
   }

   private byte[] getSHA256(byte[] data) {
      byte[] hash = null;
      try {
         MessageDigest digest = MessageDigest.getInstance(HASH_ALGORITHM);
         digest.update(data);
         hash = digest.digest();
      } catch (NoSuchAlgorithmException e) {
         L.e(e);
      }
      return hash;
   }

}





MainActivity.java
package com.fastxpo.android.fnbdelivery.activity;
import android.app.Activity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;
import com.fastxpo.android.fnbdelivery.R;
import com.fastxpo.android.fnbdelivery.adapter.CartAdapter;
import com.fastxpo.android.fnbdelivery.bean.orders.LineItem;
import com.fastxpo.android.fnbdelivery.sqlite.SqliteDBHandler;
import java.util.List;
public class MainActivityextends AppCompatActivity {

    RecyclerView cartRecyclerView;
    Activity activity;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        activity = this;
        mainRecyclerView = (RecyclerView) findViewById(R.id.mainRecyclerView);
       
        List<LineItem> allLineItems = getAllList();
        if (allLineItems.size() > 0) {
            mainRecyclerView.setLayoutManager(new LinearLayoutManager(activity, LinearLayoutManager.VERTICAL, false));
            MainAdapter mainAdapter = new MainAdapter(activity, allLineItems);
            mainRecyclerView.setAdapter(mainAdapter );
        } else {
            Toast.makeText(activity, "main List Empty", Toast.LENGTH_SHORT).show();
        }
    }
}

MainAdapter.java
package com.fastxpo.android.fnbdelivery.adapter;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.fastxpo.android.fnbdelivery.R;
import com.fastxpo.android.fnbdelivery.api.manager.ImageLoader;
import com.fastxpo.android.fnbdelivery.bean.orders.LineItem;
import java.util.List;

/** * Created by karthic on 1/4/2017. */
public class MainAdapterextends RecyclerView.Adapter<MainAdapter.MyViewHolder> {

    private Context context;
    private List<LineItem> lineItemList = null;
    private ImageLoader imageLoader;

    public MainAdapter(Context context, List<LineItem> mainDataList) {

        this.context = context;
        this.lineItemList = mainDataList;
        imageLoader = new ImageLoader(R.drawable.loading, R.drawable.loading);
    }


    public static class MyViewHolder extends RecyclerView.ViewHolder {

        protected TextView name;
        protected TextView number;
        protected ImageView image;
        protected LinearLayout relativeLayout;

        public MyViewHolder(View itemView) {
            super(itemView);
            name = (TextView) itemView.findViewById(R.id.productnameTable);
            number = (TextView) itemView.findViewById(R.id.priceTv);
            image = (ImageView) itemView.findViewById(R.id.contactimage);
            relativeLayout = (LinearLayout) itemView.findViewById(R.id.llRelativeLayout);
        }
    }

    @Override    public MainAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view;
        view = LayoutInflater.from(parent.getContext()).inflate(R.layout.product_row, parent, false);
        MainAdapter.MyViewHolder myViewHolder = new MainAdapter.MyViewHolder(view);

        return myViewHolder;
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    @Override    public void onBindViewHolder(final MainAdapter.MyViewHolder holder, final int position) {

   
        holder.name.setText(lineItemList.get(position).getItemname());
        holder.number.setText("S$" + lineItemList.get(position).getSellprice());

        if (!TextUtils.isEmpty(lineItemList.get(position).getImagename())) {
            String imgURL = lineItemList.get(position).getImagename();
            imageLoader.displayImage(imgURL, holder.image);
        } else {
            holder.image.setImageDrawable(context.getResources().getDrawable(R.drawable.loading));
        }

    }

    @Override    public int getItemCount() {
        return lineItemList.size();
    }

}



product_row.xml




<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 

    android:id="@+id/llRelativeLayout"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:layout_marginLeft="5dp"

    android:layout_marginTop="2dp"

    android:background="@color/white"

    android:orientation="horizontal">


    <RelativeLayout 

       android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_margin="10dp"

        android:orientation="horizontal">


        <RelativeLayout

            android:layout_width="80dp"

            android:layout_marginLeft="10dp"

            android:layout_marginRight="20dp"

            android:id="@+id/imagell"

            android:layout_alignParentLeft="true"

            android:layout_height="80dp">


            <ImageView

                android:id="@+id/contactimage"

                android:layout_width="match_parent"

                android:layout_height="match_parent"

                android:layout_marginRight="@dimen/margin5dp"

                android:contentDescription="@string/app_name" />


            <TextView

                android:layout_width="45dp"

                android:layout_height="45dp"

                android:layout_alignParentRight="true"

                android:background="@drawable/circle"

                android:textColor="@color/white"

                android:gravity="center" 

               android:textStyle="bold" 

               android:text="New"/>


        </RelativeLayout>




        <RelativeLayout  

          android:layout_width="match_parent"   

         android:layout_height="wrap_content"  

          android:layout_centerInParent="true" 

           android:layout_toLeftOf="@+id/checkedimageLL"

            android:layout_toRightOf="@+id/imagell">




            <TextView                

              android:id="@+id/productnameTable"                

              android:layout_width="match_parent"                

              android:layout_height="wrap_content"                

              android:textColor="@color/black"                

              android:textIsSelectable="false"                

              android:textSize="15dp"                

               android:textStyle="bold" />




            <TextView                

             android:id="@+id/priceTv"                

             android:layout_width="match_parent"                

             android:layout_height="wrap_content"

             android:layout_below="@+id/productnameTable"

             android:singleLine="true" 

             android:textColor="@color/blactransparent"

             android:textIsSelectable="false"

             android:textSize="12dp" />

        </RelativeLayout>

      

    </RelativeLayout>

</LinearLayout>

Tuesday, 6 December 2016

Three Level Exapandable ListView In Android with Two level Indicators

Java:

package zaihuishou.com.expandablerecyclerview;

import android.content.Context;

import android.os.Build;

import android.os.Bundle;

import android.support.annotation.RequiresApi;

import android.support.v7.app.AppCompatActivity;

import android.util.DisplayMetrics;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.ImageView;

import android.widget.TextView;

import java.util.List;

import zaihuishou.com.expandablerecyclerview.loader.listener.ServiceResponseListener;

import zaihuishou.com.expandablerecyclerview.loader.manager.ServiceManager;

import zaihuishou.com.expandablerecyclerview.navcategory.FirstLevelCategory;

import zaihuishou.com.expandablerecyclerview.navcategory.NavigationGategoryBaseResponse;

import zaihuishou.com.expandablerecyclerview.navcategory.SecondLevelCategory;

public class TestActivity extends AppCompatActivity {

    private ExpandableListView expandableListView;

    private Context context;

    @Override    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_test);

        context = this;

        expandableListView = (ExpandableListView) findViewById(R.id.mainList);

        DisplayMetrics metrics = new DisplayMetrics();

        getWindowManager().getDefaultDisplay().getMetrics(metrics);

        int width = metrics.widthPixels;

        if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {

            expandableListView.setIndicatorBounds(width - GetPixelFromDips(50), width - GetPixelFromDips(10));

        } else {

            expandableListView.setIndicatorBoundsRelative(width - GetPixelFromDips(50), width - GetPixelFromDips(10));

        }

        addNavigationList();

    }

    public int GetPixelFromDips(float pixels) {

        // Get the screen's density scale        final float scale = getResources().getDisplayMetrics().density;

        // Convert the dps to pixels, based on density scale        return (int) ((scale * pixels + 0.5f) - 5);

    }

    public void addNavigationList() {

        ServiceManager.navigationList(getApplicationContext(), new ServiceResponseListener<NavigationGategoryBaseResponse>() {

                    @Override                    public void onSuccess(NavigationGategoryBaseResponse response) {

                        expandableListView.setAdapter(new TestActivity.ParentLevel(context, response.getMainCategories()));

                    }

                    @Override                    public void onFailure(Throwable throwable, String errorResponse) {

                    }

                }

        );

    }

    public class ParentLevel extends BaseExpandableListAdapter {

        private Context context;

        private List<FirstLevelCategory> firstLevelCategories;

        public ParentLevel(Context context, List<FirstLevelCategory> firstLevelCategoryList) {

          this.context = context;

            this.firstLevelCategories = firstLevelCategoryList;

        }

        @Override        public Object getChild(int arg0, int arg1) {

            return arg1;

        }

        @Override        public long getChildId(int groupPosition, int childPosition) {

            return childPosition;

        }

        @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)

        @Override        public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

            TestActivity.SecondLevelExpandableListView secondLevelELV = new TestActivity.SecondLevelExpandableListView(TestActivity.this);

            secondLevelELV.setAdapter(new TestActivity.SecondLevelAdapter(context, firstLevelCategories.get(groupPosition).getSubGrouphs().get(childPosition)));

            secondLevelELV.setGroupIndicator(getResources().getDrawable(R.drawable.settings_selector));

            DisplayMetrics metrics = new DisplayMetrics();

            getWindowManager().getDefaultDisplay().getMetrics(metrics);

            int width = metrics.widthPixels;

            if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {

                secondLevelELV.setIndicatorBounds(width - GetPixelFromDips(50), width - GetPixelFromDips(10));

            } else {

                secondLevelELV.setIndicatorBoundsRelative(width - GetPixelFromDips(50), width - GetPixelFromDips(10));

            }

            return secondLevelELV;

        }

        @Override        public int getChildrenCount(int groupPosition) {

            return firstLevelCategories.get(groupPosition).getSubGrouphs().size();

        }

        @Override        public Object getGroup(int groupPosition) {

            return groupPosition;

        }

        @Override        public int getGroupCount() {

            return firstLevelCategories.size();

        }

        @Override        public long getGroupId(int groupPosition) {

            return groupPosition;

        }

        @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)

        @Override        public View getGroupView(int groupPosition, final boolean isExpanded, View convertView, ViewGroup parent) {

            if (convertView == null) {

                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                convertView = inflater.inflate(R.layout.row_first, null);

                TextView text = (TextView) convertView.findViewById(R.id.eventsListEventRowText);

                final ImageView icon = (ImageView) convertView.findViewById(R.id.icon);

                String name = firstLevelCategories.get(groupPosition).getCategoryname();

                if (name.equals(context.getString(R.string.Fancy))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.fancy));

                } else if (name.equals(context.getString(R.string.Women))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.women));

                } else if (name.equals(context.getString(R.string.Office))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.stationary));

                } else if (name.equals(context.getString(R.string.BooksMore))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.books));

                } else if (name.equals(context.getString(R.string.Men))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.businessman));

                } else if (name.equals(context.getString(R.string.DailyNeeds))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.calendar));

              } else if (name.equals(context.getString(R.string.Garments))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.garments));

                } else if (name.equals(context.getString(R.string.BabyKids))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.babykids));

                } else if (name.equals(context.getString(R.string.Fashion))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.fasion));

                } else if (name.equals(context.getString(R.string.Electronics))) {

                    icon.setBackground(context.getResources().getDrawable(R.drawable.elctronics));

                }

                text.setText(name);

            }

            return convertView;

        }

        @Override        public boolean hasStableIds() {

            return true;

        }

        @Override        public boolean isChildSelectable(int groupPosition, int childPosition) {

            return true;

        }

    }

    public class SecondLevelExpandableListView extends ExpandableListView {

        public SecondLevelExpandableListView(Context context) {

            super(context);

        }

        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

            heightMeasureSpec = MeasureSpec.makeMeasureSpec(999999, MeasureSpec.AT_MOST);

            super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        }

    }

    public class SecondLevelAdapter extends BaseExpandableListAdapter {

        private Context context;

        private SecondLevelCategory secondLevelCategories;

        public SecondLevelAdapter(Context context, SecondLevelCategory secondLevelCategories) {

            this.context = context;

            this.secondLevelCategories = secondLevelCategories;

        }

        @Override        public Object getGroup(int groupPosition) {

            return groupPosition;

        }

        @Override        public int getGroupCount() {

            return 1;

        }

        @Override        public long getGroupId(int groupPosition) {

            return groupPosition;

        }

        @Override        public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {

            if (convertView == null) {

                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                convertView = inflater.inflate(R.layout.row_third, null);

                TextView text = (TextView) convertView.findViewById(R.id.eventsListEventRowText);

                text.setText(secondLevelCategories.getSubcategoryname());

            }

            return convertView;

        }

        @Override        public Object getChild(int groupPosition, int childPosition) {

            return childPosition;

        }

        @Override        public long getChildId(int groupPosition, int childPosition) {

            return childPosition;

        }

        @Override        public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

            if (convertView == null) {

                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                convertView = inflater.inflate(R.layout.row_second, null);

                TextView text = (TextView) convertView.findViewById(R.id.eventsListEventRowText);

                text.setText(secondLevelCategories.getThirdLevelCategoryList().get(childPosition).getLowersubcategoryname());

            }

            return convertView;

        }

        @Override        public int getChildrenCount(int groupPosition) {

            return secondLevelCategories.getThirdLevelCategoryList().size();

        }

        @Override        public boolean hasStableIds() {

            return true;

        }

        @Override        public boolean isChildSelectable(int groupPosition, int childPosition) {

            return true;

        }

    }

}

main.Xml:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/activity_test"android:layout_width="match_parent"android:layout_height="match_parent"tools:context="zaihuishou.com.expandablerecyclerview.TestActivity"><ExpandableListViewandroid:id="@+id/mainList"android:layout_width="match_parent"android:layout_height="match_parent"android:background="#ffffff"android:groupIndicator="@drawable/settings_selector"android:transcriptMode="alwaysScroll"></ExpandableListView></RelativeLayout>

rowfirst.xml:

<?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="100dp"android:orientation="horizontal"android:padding="10dp"><ImageViewandroid:id="@+id/icon"android:layout_width="25dp"android:layout_height="25dp"android:layout_alignParentLeft="true" /><TextViewandroid:id="@+id/eventsListEventRowText"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_toLeftOf="@+id/plus"android:layout_toRightOf="@+id/icon"android:textColor="@android:color/background_dark"android:textSize="15sp" /></LinearLayout>

rowsecond.xml:

<?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="match_parent"android:orientation="vertical"android:padding="10dp"><TextViewandroid:id="@+id/eventsListEventRowText"android:layout_width="match_parent"android:layout_height="wrap_content"android:paddingLeft="20dp" /></LinearLayout>

rowthird.xml:

<?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="match_parent"android:orientation="vertical"android:padding="10dp"><TextViewandroid:id="@+id/eventsListEventRowText"android:layout_width="match_parent"android:layout_height="wrap_content" /></LinearLayout>

Thursday, 10 November 2016

Custom Digital Clock in Android

digitalClockTv = (TextView) findViewById(R.id.digitalClockTv);
countDownTimer = new CountDownTimer(1000000000, 1000) {

    public void onTick(long millisUntilFinished) {
        String hour, minit, sec;
        Calendar c = Calendar.getInstance();
        hour = String.valueOf(c.get(Calendar.HOUR));
        minit = String.valueOf(c.get(Calendar.MINUTE));
        sec = String.valueOf(c.get(Calendar.SECOND));
        int a = c.get(Calendar.AM_PM);
        if (hour.length() == 1) {
            hour = getString(R.string.zero) + hour;
        }
        if (minit.length() == 1) {
            minit = getString(R.string.zero) + minit;
        }
        if (sec.length() == 1) {
            sec = getString(R.string.zero) + sec;
        }
        if (a == Calendar.AM) {
            digitalClockTv.setText(hour + getString(R.string.colon) + minit + getString(R.string.colon) + sec + getString(R.string.am));
        } else {
            digitalClockTv.setText(hour + getString(R.string.colon) + minit + getString(R.string.colon) + sec + getString(R.string.pm));
        }
    }

    public void onFinish() {
    }
};
countDownTimer.start();

Thank You

Monday, 3 October 2016

How to hide/show Toolbar when list is scrolling

Adapter:
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.TextView;
import java.util.List;
import gurubhai.fastxpo.restarent.R;

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

private static final int TYPE_ITEM = 1;
private List<String> mItemList;
public RecyclerAdapter(List<String> itemList) {
mItemList = itemList;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
if (viewType == TYPE_ITEM) {
final View view = LayoutInflater.from(context).inflate(R.layout.recycler_item, parent, false);
return new RecyclerItemViewHolder(view);
}
throw new RuntimeException("There is no type that matches the type " + viewType + " + make sure your using types correctly");
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
RecyclerItemViewHolder holder = (RecyclerItemViewHolder) viewHolder;
String itemText = mItemList.get(position); // header
holder.setItemText(itemText);
}
public int getBasicItemCount() {
return mItemList == null ? 0 : mItemList.size();
}

@Override
public int getItemViewType(int position) {
return TYPE_ITEM;
}

@Override
public int getItemCount() {
return getBasicItemCount(); //
}

public class RecyclerItemViewHolder extends RecyclerView.ViewHolder {

private TextView mItemTextView;

public RecyclerItemViewHolder(final View parent) {
super(parent);
mItemTextView = (TextView) parent.findViewById(R.id.itemTextView);
}

public void setItemText(CharSequence text) {
mItemTextView.setText(text);
}
}
}

MainActivity.java
public class MainActivity extends AppCompatActivity {

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

private void initToolbar() {
Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
setTitle(getString(R.string.app_name));
mToolbar.setTitleTextColor(getResources().getColor(android.R.color.white));
}

private void initViewPagerAndTabs() {
ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);
PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager());
pagerAdapter.addFragment(ItemSelectionFragment.createInstance(20), getString(R.string.tab_1));
pagerAdapter.addFragment(ItemSelectionFragment.createInstance(4), getString(R.string.tab_2));
viewPager.setAdapter(pagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabLayout);
tabLayout.setupWithViewPager(viewPager);
}

static class PagerAdapter extends FragmentPagerAdapter {

private final List<Fragment> fragmentList = new ArrayList<>();
private final List<String> fragmentTitleList = new ArrayList<>();

public PagerAdapter(FragmentManager fragmentManager) {
super(fragmentManager);
}

public void addFragment(Fragment fragment, String title) {
fragmentList.add(fragment);
fragmentTitleList.add(title);
}

@Override
public Fragment getItem(int position) {
return fragmentList.get(position);
}

@Override
public int getCount() {
return fragmentList.size();
}

@Override
public CharSequence getPageTitle(int position) {
return fragmentTitleList.get(position);
}
}
}

Fragment.java:
import android.os.Bundle;
import android.support.v4.app.Fragment;
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 java.util.ArrayList;
import java.util.List;
import gurubhai.fastxpo.restarent.R;
import gurubhai.fastxpo.restarent.adapter.RecyclerAdapter;

public class ItemSelectionFragment extends Fragment {

public final static String ITEMS_COUNT_KEY = "PartThreeFragment$ItemsCount";

public static ItemSelectionFragment createInstance(int itemsCount) {
ItemSelectionFragment partThreeFragment = new ItemSelectionFragment();
Bundle bundle = new Bundle();
bundle.putInt(ITEMS_COUNT_KEY, itemsCount);
partThreeFragment.setArguments(bundle);
return partThreeFragment;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
RecyclerView recyclerView = (RecyclerView) inflater.inflate(
R.layout.fragment_item_selection, container, false);
setupRecyclerView(recyclerView);
return recyclerView;
}

private void setupRecyclerView(RecyclerView recyclerView) {
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
RecyclerAdapter recyclerAdapter = new RecyclerAdapter(createItemList());
recyclerView.setAdapter(recyclerAdapter);
}

private List<String> createItemList() {
List<String> itemList = new ArrayList<>();
Bundle bundle = getArguments();
if (bundle != null) {
int itemsCount = bundle.getInt(ITEMS_COUNT_KEY);
for (int i = 0; i < itemsCount; i++) {
itemList.add("Item " + i);
}
}
return itemList;
}
}

activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.design.widget.AppBarLayout
android:id="@+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways" />

<android.support.design.widget.TabLayout
android:id="@+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabIndicatorColor="@android:color/white"
app:tabIndicatorHeight="6dp"
app:tabSelectedTextColor="@android:color/white"
app:tabTextColor="@android:color/white" />
</android.support.design.widget.AppBarLayout>

<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

recycler_item.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="8dp"
card_view:cardCornerRadius="4dp">
<TextView
android:id="@+id/itemTextView"
android:layout_width="match_parent"
android:layout_height="?attr/listPreferredItemHeight"
android:gravity="center_vertical"
android:padding="8dp"
style="@style/Base.TextAppearance.AppCompat.Body2"/>
</android.support.v7.widget.CardView>

Gradel:
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:design:23.4.0'
compile 'com.android.support:recyclerview-v7:23.4.0'
compile 'com.android.support:cardview-v7:23.4.0'

Thank you