Showing posts with label Android code sample: PagerAdapter. Show all posts
Showing posts with label Android code sample: PagerAdapter. Show all posts

Sunday, April 27, 2014

Set text size and color of PagerTitleStrip on ViewPager

Previous example show how to Implement PagerTitleStrip on ViewPager. In the onCreate() method, we get view of PagerTitleStrip (pagerTitleStrip) without using it. We can set text size and color of the PagerTitleStrip by calling its setTextSize() and setTextColor() methods.

Example:
  PagerTitleStrip pagerTitleStrip = (PagerTitleStrip)findViewById(R.id.titlestrip);
  pagerTitleStrip.setTextSize(TypedValue.COMPLEX_UNIT_SP, 24);
  pagerTitleStrip.setTextColor(Color.BLUE);

on tablet

on phone

Thursday, April 24, 2014

Example of ViewPager with custom PagerAdapter

This example show how to implement ViewPager with custom PagerAdapter. (Another example(s) implement ViewPager with FragmentPagerAdapter, read HERE)


Modify activity_main.xml to include android.support.v4.view.ViewPager in layout.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.androidviewpagerapp.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />
    
    <android.support.v4.view.ViewPager
        android:id="@+id/myviewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
        
</LinearLayout>

MainActivity.java
package com.example.androidviewpagerapp;

import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;

public class MainActivity extends Activity {

 ViewPager viewPager;
 MyPagerAdapter myPagerAdapter;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  viewPager = (ViewPager)findViewById(R.id.myviewpager);
  myPagerAdapter = new MyPagerAdapter();
  viewPager.setAdapter(myPagerAdapter);

 }
 
 private class MyPagerAdapter extends PagerAdapter{
  
  int NumberOfPages = 5;
  
  int[] res = { 
   android.R.drawable.ic_dialog_alert,
   android.R.drawable.ic_menu_camera,
   android.R.drawable.ic_menu_compass,
   android.R.drawable.ic_menu_directions,
   android.R.drawable.ic_menu_gallery};
  int[] backgroundcolor = { 
   0xFF101010,
   0xFF202020,
   0xFF303030,
   0xFF404040,
   0xFF505050};

  @Override
  public int getCount() {
   return NumberOfPages;
  }

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

  @Override
  public Object instantiateItem(ViewGroup container, int position) {
   
      
      TextView textView = new TextView(MainActivity.this);
      textView.setTextColor(Color.WHITE);
      textView.setTextSize(30);
      textView.setTypeface(Typeface.DEFAULT_BOLD);
      textView.setText(String.valueOf(position));
      
      ImageView imageView = new ImageView(MainActivity.this);
      imageView.setImageResource(res[position]);
      LayoutParams imageParams = new LayoutParams(
        LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);
      imageView.setLayoutParams(imageParams);
      
      LinearLayout layout = new LinearLayout(MainActivity.this);
      layout.setOrientation(LinearLayout.VERTICAL);
      LayoutParams layoutParams = new LayoutParams(
        LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);
      layout.setBackgroundColor(backgroundcolor[position]);
      layout.setLayoutParams(layoutParams);
      layout.addView(textView);
      layout.addView(imageView);
      
      final int page = position;
      layout.setOnClickListener(new OnClickListener(){

    @Override
    public void onClick(View v) {
     Toast.makeText(MainActivity.this, 
      "Page " + page + " clicked", 
      Toast.LENGTH_LONG).show();
    }});
      
      container.addView(layout);
      return layout;
  }

  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
   container.removeView((LinearLayout)object);
  }

 }

}


download filesDownload the files.

Next:
Implement PagerTitleStrip on ViewPager
Implement OnPageChangeListener for ViewPager to monitor the current visible page