View Pager in android

View Pager-scroll page (slide) call view pager.

ViewPager pager;

private ArrayList<ModelClassPager> arrayOfPager;

                  pager1 = (ViewPager)findViewById(R.id.pager);
arrayOfPager = new ArrayList<ModelClass>();

arrayOfPager.add(new ModelClass(R.drawable.first));
arrayOfPager.add(new ModelClass(R.drawable.second));
arrayOfPager.add(new ModelClass(R.drawable.third));
                arrayOfPager.add(new ModelClass(R.drawable.four));

PagerAdapter  pagerAdapter = new PagerAdapter  (MainActivity.this,arrayOfPager);

pagerAdapter .setAdapter(pagerAdapter);

Custom Adapter for View Pager:

PagerAdapter   extends PagerAdapter {

LayoutInflater inflates;
ArrayList<ModelClass> arrayOfPager;

Context context;

public PagerAdapter   (Context context,
ArrayList<ModelClass> arrayOfPager_) {
this.context = context;
this.arrayOfPager = arrayOfPager_;
inflates = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

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

public Object instantiateItem(View collection, int position) {

ViewGroup container = null;
ImageView pgrImage;
View viewPgaer = inflates.inflate(R.layout.row_pager, null);

pgrImage = (ImageView)viewPgaer
.findViewById(R.id.pagerImage);

pgrImage.setImageResource(arrayOfPager.get(position).getPagerImg());

((ViewPager) collection).addView(viewPgaer, 0);

return viewPgaer;
}

public void destroyItem(View collection, int position, Object view) {
((ViewPager) collection).removeView((View) view);
}

public boolean isViewFromObject(View view, Object object) {
return view == (object);
}

public void finishUpdate(View arg0) {
}

@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
}

@Override
public Parcelable saveState() {
return null;
}

@Override
public void startUpdate(View arg0) {
}

}

Model Class (Gettor Settor Class):

public class ModelClassPager {

int pagerImg = 0;

public int getPagerImg() {

return pagerImg;

}

public void setPagerImg(int pagerImg) {

this.pagerImg = pagerImg;

}

public ModelClassPager( int pagerImg_) {

// TODO Auto-generated constructor stub

pagerImg = pagerImg_;

}

}

XML Design For View Pager:

   <android.support.v4.view.ViewPager
        android:id="@+id/pagesCustmLayoutMAIN"
        android:layout_width="fill_parent"
        android:layout_height="160dp" />

Custom Navigation Drawer in Android

Create Navigation Drawer in android using fragment.

Navigation Drawer

DrawerLayout drawerLayout;

drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

// On drawerLayout click open and close


public void openDrawable() {
// TODO Auto-generated method stub
optionMenuStr="open";
//menuImage.setBackgroundResource(R.drawable.backk);
drawerLayout.openDrawer(Gravity.LEFT);
}

public void closeDrawable() {
// TODO Auto-generated method stub
optionMenuStr="close";
menuImage.setBackgroundResource(R.drawable.menu);
drawerLayout.closeDrawers();
}

Disable Swipe Open  Navigation Drawer Android:

Disable Swipe Open Navigation Drawer, sometime we use fragment and BaseActivity is same and fragment are different then in other fragments we need to stop swipe open Drawer then use this code.

drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);

Disable to Able Swipe Open  Navigation Drawer Android:

if one you have disable swipe open then again it need to open else it not working.

drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);

XML Design.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout"
        android:layout_width="fill_parent"
        android:layout_height="match_parent" >

        <FrameLayout
            android:id="@+id/content_frame_Home"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

        <RelativeLayout
            android:id="@+id/left_relative"
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_gravity="start" >

            <include layout="@layout/slider" />
        </RelativeLayout>
    </android.support.v4.widget.DrawerLayout>

</RelativeLayout>

Show Google Map V2 in FragmentActivity Android.

show google map v2 in fragment activity, we need SupportMapFragment for it and fragment in xml file.

Google Map in Android

private GoogleMap googleMap;

SupportMapFragment supportMapFrag=(SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map);

googleMap=supportMapFrag.getMap();

            /*set map type*/
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);

xml layout for map:

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

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent">

  <fragment

      android:id="@+id/map"

      android:layout_width="fill_parent"

      android:layout_height="fill_parent"

      class="com.google.android.gms.maps.SupportMapFragment" />

</RelativeLayout>

add Google Play Service library and gilve all permission in manifest.

    <permission

        android:name="com.googlemap.permission.MAPS_RECEIVE"

        android:protectionLevel="signature" />

    <uses-permission android:name="YOUR_PACKAGE_NAME.MAPS_RECEIVE" />

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

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

    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

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

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

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

    <uses-feature

        android:glEsVersion="0x00020000"

        android:required="true" />

before Application Tag add these.

 <meta-data

            android:name="com.google.android.gms.version"

            android:value="@integer/google_play_services_version" />

        <meta-data

            android:name="com.google.android.maps.v2.API_KEY"

            android:value="YOUR API KEY" />

Multi Color in Single TextView Android

How To set  Multi Color in Single TextView:

programatically we can set multi color text in single TextView, first part of text show different color and other part show different color. dynamically set text on TextView.

TextView textView;

textView.setText(Html.fromHtml("<font color='#4CAF50'> Android</font> <font color='#0091EA'>Developer</font>"));

in above code first part "Android" show green color and "Developer" show blue color. so like that we can set dynamically multi color in single Textview.

Alert Dialog in Android

show alert dialog in Android for validation or other purpose, show alert dialog with message and when click on Ok then Dismiss.

it pop up on screen and display message.

Context context;
String message;
AlertDialog alert = null;

AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setMessage(message)
      .setCancelable(false)
      .setPositiveButton("OK", new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int id) {
          alert.dismiss();
          }
      });
alert = builder.create();
alert.show();
}

Show Image Using Picasso in Android

Picasso is powerful Image Loading Library in Android, it caching image and manage memory automatically and large image easily handle in Android.

Working with Images In Android:

In Android handle many Image and manage them is complex, some time "Out Of Memory Error Occur" due to large size Images and we need to recycle and free memory after image load.

Get Gmail Address Of User In Android Programatically

In Android get user gmail address programatically in android using AccountManager.

    try {
AccountManager accountManager = AccountManager.get(context);
Account[] accountsEmail = accountManager.getAccountsByType("com.google");
Account email = accountsEmail[0];
return email.name;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

Search in Listview Android

Search inside listview using addTextChangedListener , in listview when EditText we search then below list show related search  list data. 

Hide Keyboard in Android

Hide keyboard in android on button click or layout click some time we notice that after enter data in edittext when click button then still show keyboard on eittext, we need to hide keyboard on button click.

some time we switch one activity to another activity then if keyboard open in first activity then it also show in second activity.

Hide keyboard android

Data store and retrieve in android using sqlite database

Store Data in SQLite Database Android:

many ways to storage data in android like Share Preference and other but store data using SQLite is parmanent and can be in many format. In Share Preference save data in key-value pair.

For SQLite we extend SQLiteOpenHelper and @Override write query and save data.

Add Data in Android Using SQLite Database