Android ViewPager Example

This is simple example for a viewpager in android.First add "android-support-v4.jar"  library in your libs folder.than create an activity and add this code.

public class MainActivity extends Activity implements OnClickListener {

private ViewPager viewPager;

private TextSwipping pagerAdapter;

private ArrayList<String> alText = new ArrayList<String>();

private Context context;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.welcomepage);

alText.add("Hi");

alText.add("This");

alText.add("is");

alText.add("Manu");

viewPager = (ViewPager) findViewById(R.id.welcome_text_pager);

pagerAdapter = new TextSwipping(alText, this);

viewPager.setAdapter(pagerAdapter);

viewPager.setCurrentItem(0);

viewPager.setOnPageChangeListener(new OnPageChangeListener() {

@Override

public void onPageSelected(int arg0) {

// TODO Auto-generated method stub

}

@Override

public void onPageScrolled(int arg0, float arg1, int arg2) {

// TODO Auto-generated method stub

}

@Override

public void onPageScrollStateChanged(int pos) {

// TODO Auto-generated method stub

if (viewPager.getCurrentItem() == 0) {

//                           set your conditions here

} else if (viewPager.getCurrentItem() == 1) {

//                           set your conditions here

} else if (viewPager.getCurrentItem() == 2) {

//                           set your conditions here

} else if (viewPager.getCurrentItem() == 3) {

//                           set your conditions here

}

}

});

}

}

add this viewpager in your welcomepage.xml  file

<android.support.v4.view.ViewPager
            android:id="@+id/welcome_text_pager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />





and create Adapter for the text displaying in your viewpager.



public class TextSwipping extends PagerAdapter {

ArrayList<String> alText;
Context context;

public TextSwipping(ArrayList<String> alText, Context context) {
this.alText = alText;
this.context = context;

}

@Override
public int getCount() {
// TODO Auto-generated method stub
return 4;
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) container.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

// View view= inflater.inflate(R.layout.textswitcher, null);


// I am using a   dynamic  text view  you could use
//a layout using inflater or use a fragment as your necessity.
TextView tvTextSwitcher = new TextView(context);

LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
tvTextSwitcher.setTextColor(Color.parseColor("#ff78ff"));
tvTextSwitcher.setTextSize(TypedValue.COMPLEX_UNIT_DIP,20);
tvTextSwitcher.setLayoutParams(lp);
tvTextSwitcher.setGravity(Gravity.CENTER_HORIZONTAL);

tvTextSwitcher.setText("  " + alText.get(position));
tvTextSwitcher.setTypeface(WidgetProperties
.setTextTypefaceRegular(context));

((ViewPager) container).addView(tvTextSwitcher);

return tvTextSwitcher;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
// TODO Auto-generated method stub
((ViewPager) container).removeView((View) object);
}

@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}

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