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Monday, January 14, 2013

Android-PageViewer

source code here

I've searched for a page Viewer to swipe the pages for the better view .. I found some of the snippets while searching for that ...

I used  the dotted Indication using  CirclePageIndicator in my package "com.rakesh.view"


The Java files in this package are

CirclePageIndicator.java



public class CirclePageIndicator extends View implements PageIndicator {
    private static final int INVALID_POINTER = -1;

    private float mRadius;
    private final Paint mPaintPageFill = new Paint(ANTI_ALIAS_FLAG);
    private final Paint mPaintStroke = new Paint(ANTI_ALIAS_FLAG);
    private final Paint mPaintFill = new Paint(ANTI_ALIAS_FLAG);
    private ViewPager mViewPager;
    private ViewPager.OnPageChangeListener mListener;
    private int mCurrentPage;
    private int mSnapPage;
    private float mPageOffset;
    private int mScrollState;
    private int mOrientation;
    private boolean mCentered;
    private boolean mSnap;

    private int mTouchSlop;
    private float mLastMotionX = -1;
    private int mActivePointerId = INVALID_POINTER;
    private boolean mIsDragging;


    public CirclePageIndicator(Context context) {
        this(context, null);
    }

    public CirclePageIndicator(Context context, AttributeSet attrs) {
        this(context, attrs, R.attr.vpiCirclePageIndicatorStyle);
    }

    public CirclePageIndicator(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        if (isInEditMode()) return;

        //Load defaults from resources
        final Resources res = getResources();
        final int defaultPageColor = res.getColor(R.color.default_circle_indicator_page_color);
        final int defaultFillColor = res.getColor(R.color.default_circle_indicator_fill_color);
        final int defaultOrientation = res.getInteger(R.integer.default_circle_indicator_orientation);
        final int defaultStrokeColor = res.getColor(R.color.default_circle_indicator_stroke_color);
        final float defaultStrokeWidth = res.getDimension(R.dimen.default_circle_indicator_stroke_width);
        final float defaultRadius = res.getDimension(R.dimen.default_circle_indicator_radius);
        final boolean defaultCentered = res.getBoolean(R.bool.default_circle_indicator_centered);
        final boolean defaultSnap = res.getBoolean(R.bool.default_circle_indicator_snap);

        //Retrieve styles attributes
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CirclePageIndicator, defStyle, 0);

        mCentered = a.getBoolean(R.styleable.CirclePageIndicator_centered, defaultCentered);
        mOrientation = a.getInt(R.styleable.CirclePageIndicator_android_orientation, defaultOrientation);
        mPaintPageFill.setStyle(Style.FILL);
        mPaintPageFill.setColor(a.getColor(R.styleable.CirclePageIndicator_pageColor, defaultPageColor));
        mPaintStroke.setStyle(Style.STROKE);
        mPaintStroke.setColor(a.getColor(R.styleable.CirclePageIndicator_strokeColor, defaultStrokeColor));
        mPaintStroke.setStrokeWidth(a.getDimension(R.styleable.CirclePageIndicator_strokeWidth, defaultStrokeWidth));
        mPaintFill.setStyle(Style.FILL);
        mPaintFill.setColor(a.getColor(R.styleable.CirclePageIndicator_fillColor, defaultFillColor));
        mRadius = a.getDimension(R.styleable.CirclePageIndicator_radius, defaultRadius);
        mSnap = a.getBoolean(R.styleable.CirclePageIndicator_snap, defaultSnap);

        Drawable background = a.getDrawable(R.styleable.CirclePageIndicator_android_background);
        if (background != null) {
          setBackgroundDrawable(background);
        }

        a.recycle();

        final ViewConfiguration configuration = ViewConfiguration.get(context);
        mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);
    }


    public void setCentered(boolean centered) {
        mCentered = centered;
        invalidate();
    }

    public boolean isCentered() {
        return mCentered;
    }

    public void setPageColor(int pageColor) {
        mPaintPageFill.setColor(pageColor);
        invalidate();
    }

    public int getPageColor() {
        return mPaintPageFill.getColor();
    }

    public void setFillColor(int fillColor) {
        mPaintFill.setColor(fillColor);
        invalidate();
    }

    public int getFillColor() {
        return mPaintFill.getColor();
    }

    public void setOrientation(int orientation) {
        switch (orientation) {
            case HORIZONTAL:
            case VERTICAL:
                mOrientation = orientation;
                requestLayout();
                break;

            default:
                throw new IllegalArgumentException("Orientation must be either HORIZONTAL or VERTICAL.");
        }
    }

    public int getOrientation() {
        return mOrientation;
    }

    public void setStrokeColor(int strokeColor) {
        mPaintStroke.setColor(strokeColor);
        invalidate();
    }

    public int getStrokeColor() {
        return mPaintStroke.getColor();
    }

    public void setStrokeWidth(float strokeWidth) {
        mPaintStroke.setStrokeWidth(strokeWidth);
        invalidate();
    }

    public float getStrokeWidth() {
        return mPaintStroke.getStrokeWidth();
    }

    public void setRadius(float radius) {
        mRadius = radius;
        invalidate();
    }

    public float getRadius() {
        return mRadius;
    }

    public void setSnap(boolean snap) {
        mSnap = snap;
        invalidate();
    }

    public boolean isSnap() {
        return mSnap;
    }

  
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        if (mViewPager == null) {
            return;
        }
        final int count = mViewPager.getAdapter().getCount();
        if (count == 0) {
            return;
        }

        if (mCurrentPage >= count) {
            setCurrentItem(count - 1);
            return;
        }

        int longSize;
        int longPaddingBefore;
        int longPaddingAfter;
        int shortPaddingBefore;
        if (mOrientation == HORIZONTAL) {
            longSize = getWidth();
            longPaddingBefore = getPaddingLeft();
            longPaddingAfter = getPaddingRight();
            shortPaddingBefore = getPaddingTop();
        } else {
            longSize = getHeight();
            longPaddingBefore = getPaddingTop();
            longPaddingAfter = getPaddingBottom();
            shortPaddingBefore = getPaddingLeft();
        }

        final float threeRadius = mRadius * 3;
        final float shortOffset = shortPaddingBefore + mRadius;
        float longOffset = longPaddingBefore + mRadius;
        if (mCentered) {
            longOffset += ((longSize - longPaddingBefore - longPaddingAfter) / 2.0f) - ((count * threeRadius) / 2.0f);
        }

        float dX;
        float dY;

        float pageFillRadius = mRadius;
        if (mPaintStroke.getStrokeWidth() > 0) {
            pageFillRadius -= mPaintStroke.getStrokeWidth() / 2.0f;
        }

        //Draw stroked circles
        for (int iLoop = 0; iLoop < count; iLoop++) {
            float drawLong = longOffset + (iLoop * threeRadius);
            if (mOrientation == HORIZONTAL) {
                dX = drawLong;
                dY = shortOffset;
            } else {
                dX = shortOffset;
                dY = drawLong;
            }
            // Only paint fill if not completely transparent
            if (mPaintPageFill.getAlpha() > 0) {
                canvas.drawCircle(dX, dY, pageFillRadius, mPaintPageFill);
            }

            // Only paint stroke if a stroke width was non-zero
            if (pageFillRadius != mRadius) {
                canvas.drawCircle(dX, dY, mRadius, mPaintStroke);
            }
        }

        //Draw the filled circle according to the current scroll
        float cx = (mSnap ? mSnapPage : mCurrentPage) * threeRadius;
        if (!mSnap) {
            cx += mPageOffset * threeRadius;
        }
        if (mOrientation == HORIZONTAL) {
            dX = longOffset + cx;
            dY = shortOffset;
        } else {
            dX = shortOffset;
            dY = longOffset + cx;
        }
        canvas.drawCircle(dX, dY, mRadius, mPaintFill);
    }

    public boolean onTouchEvent(android.view.MotionEvent ev) {
        if (super.onTouchEvent(ev)) {
            return true;
        }
        if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
            return false;
        }

        final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
        switch (action) {
            case MotionEvent.ACTION_DOWN:
                mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
                mLastMotionX = ev.getX();
                break;

            case MotionEvent.ACTION_MOVE: {
                final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
                final float x = MotionEventCompat.getX(ev, activePointerIndex);
                final float deltaX = x - mLastMotionX;

                if (!mIsDragging) {
                    if (Math.abs(deltaX) > mTouchSlop) {
                        mIsDragging = true;
                    }
                }

                if (mIsDragging) {
                    mLastMotionX = x;
                    if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
                        mViewPager.fakeDragBy(deltaX);
                    }
                }

                break;
            }

            case MotionEvent.ACTION_CANCEL:
            case MotionEvent.ACTION_UP:
                if (!mIsDragging) {
                    final int count = mViewPager.getAdapter().getCount();
                    final int width = getWidth();
                    final float halfWidth = width / 2f;
                    final float sixthWidth = width / 6f;

                    if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
                        if (action != MotionEvent.ACTION_CANCEL) {
                            mViewPager.setCurrentItem(mCurrentPage - 1);
                        }
                        return true;
                    } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
                        if (action != MotionEvent.ACTION_CANCEL) {
                            mViewPager.setCurrentItem(mCurrentPage + 1);
                        }
                        return true;
                    }
                }

                mIsDragging = false;
                mActivePointerId = INVALID_POINTER;
                if (mViewPager.isFakeDragging()) mViewPager.endFakeDrag();
                break;

            case MotionEventCompat.ACTION_POINTER_DOWN: {
                final int index = MotionEventCompat.getActionIndex(ev);
                mLastMotionX = MotionEventCompat.getX(ev, index);
                mActivePointerId = MotionEventCompat.getPointerId(ev, index);
                break;
            }

            case MotionEventCompat.ACTION_POINTER_UP:
                final int pointerIndex = MotionEventCompat.getActionIndex(ev);
                final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);
                if (pointerId == mActivePointerId) {
                    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
                    mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
                }
                mLastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
                break;
        }

        return true;
    }

  
    public void setViewPager(ViewPager view) {
        if (mViewPager == view) {
            return;
        }
        if (mViewPager != null) {
            mViewPager.setOnPageChangeListener(null);
        }
        if (view.getAdapter() == null) {
            throw new IllegalStateException("ViewPager does not have adapter instance.");
        }
        mViewPager = view;
        mViewPager.setOnPageChangeListener(this);
        invalidate();
    }

  
    public void setViewPager(ViewPager view, int initialPosition) {
        setViewPager(view);
        setCurrentItem(initialPosition);
    }

  
    public void setCurrentItem(int item) {
        if (mViewPager == null) {
            throw new IllegalStateException("ViewPager has not been bound.");
        }
        mViewPager.setCurrentItem(item);
        mCurrentPage = item;
        invalidate();
    }

  
    public void notifyDataSetChanged() {
        invalidate();
    }

  
    public void onPageScrollStateChanged(int state) {
        mScrollState = state;

        if (mListener != null) {
            mListener.onPageScrollStateChanged(state);
        }
    }

  
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        mCurrentPage = position;
        mPageOffset = positionOffset;
        invalidate();

        if (mListener != null) {
            mListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
        }
    }

  
    public void onPageSelected(int position) {
        if (mSnap || mScrollState == ViewPager.SCROLL_STATE_IDLE) {
            mCurrentPage = position;
            mSnapPage = position;
            invalidate();
        }

        if (mListener != null) {
            mListener.onPageSelected(position);
        }
    }

  
    public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
        mListener = listener;
    }

    /*
     * (non-Javadoc)
     *
     * @see android.view.View#onMeasure(int, int)
     */
  
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (mOrientation == HORIZONTAL) {
            setMeasuredDimension(measureLong(widthMeasureSpec), measureShort(heightMeasureSpec));
        } else {
            setMeasuredDimension(measureShort(widthMeasureSpec), measureLong(heightMeasureSpec));
        }
    }

    /**
     * Determines the width of this view
     *
     * @param measureSpec
     *            A measureSpec packed into an int
     * @return The width of the view, honoring constraints from measureSpec
     */
    private int measureLong(int measureSpec) {
        int result;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);

        if ((specMode == MeasureSpec.EXACTLY) || (mViewPager == null)) {
            //We were told how big to be
            result = specSize;
        } else {
            //Calculate the width according the views count
            final int count = mViewPager.getAdapter().getCount();
            result = (int)(getPaddingLeft() + getPaddingRight()
                    + (count * 2 * mRadius) + (count - 1) * mRadius + 1);
            //Respect AT_MOST value if that was what is called for by measureSpec
            if (specMode == MeasureSpec.AT_MOST) {
                result = Math.min(result, specSize);
            }
        }
        return result;
    }

    /**
     * Determines the height of this view
     *
     * @param measureSpec
     *            A measureSpec packed into an int
     * @return The height of the view, honoring constraints from measureSpec
     */
    private int measureShort(int measureSpec) {
        int result;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);

        if (specMode == MeasureSpec.EXACTLY) {
            //We were told how big to be
            result = specSize;
        } else {
            //Measure the height
            result = (int)(2 * mRadius + getPaddingTop() + getPaddingBottom() + 1);
            //Respect AT_MOST value if that was what is called for by measureSpec
            if (specMode == MeasureSpec.AT_MOST) {
                result = Math.min(result, specSize);
            }
        }
        return result;
    }

  
    public void onRestoreInstanceState(Parcelable state) {
        SavedState savedState = (SavedState)state;
        super.onRestoreInstanceState(savedState.getSuperState());
        mCurrentPage = savedState.currentPage;
        mSnapPage = savedState.currentPage;
        requestLayout();
    }

  
    public Parcelable onSaveInstanceState() {
        Parcelable superState = super.onSaveInstanceState();
        SavedState savedState = new SavedState(superState);
        savedState.currentPage = mCurrentPage;
        return savedState;
    }

    static class SavedState extends BaseSavedState {
        int currentPage;

        public SavedState(Parcelable superState) {
            super(superState);
        }

        private SavedState(Parcel in) {
            super(in);
            currentPage = in.readInt();
        }

      
        public void writeToParcel(Parcel dest, int flags) {
            super.writeToParcel(dest, flags);
            dest.writeInt(currentPage);
        }

        @SuppressWarnings("UnusedDeclaration")
        public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
          
            public SavedState createFromParcel(Parcel in) {
                return new SavedState(in);
            }

          
            public SavedState[] newArray(int size) {
                return new SavedState[size];
            }
        };
    }
}

 PageIndicator.java


package com.rakesh.view;

import android.support.v4.view.ViewPager;


public interface PageIndicator extends ViewPager.OnPageChangeListener {
    /**
     * Bind the indicator to a ViewPager.
     *
     * @param view
     */
    void setViewPager(ViewPager view);

    /**
     * Bind the indicator to a ViewPager.
     *
     * @param view
     * @param initialPosition
     */
    void setViewPager(ViewPager view, int initialPosition);

    /**
     * <p>Set the current page of both the ViewPager and indicator.</p>
     *
     * <p>This <strong>must</strong> be used if you need to set the page before
     * the views are drawn on screen (e.g., default start page).</p>
     *
     * @param item
     */
    void setCurrentItem(int item);

    /**
     * Set a page change listener which will receive forwarded events.
     *
     * @param listener
     */
    void setOnPageChangeListener(ViewPager.OnPageChangeListener listener);

    /**
     * Notify the indicator that the fragment list has changed.
     */
    void notifyDataSetChanged();
}



I have another package called "com.example.pageviewer"


MainActivity.java



package com.example.viewpager;


import com.rakesh.view.CirclePageIndicator;

import android.os.Bundle;
import android.app.Activity;
import android.support.v4.view.ViewPager;
public class MainActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        MyPagerAdapter adapter = new MyPagerAdapter();
      
        ViewPager risk = (ViewPager) findViewById(R.id.viewpager);
        risk.setAdapter(adapter);
        risk.setCurrentItem(1);
       CirclePageIndicator cri=
               (CirclePageIndicator)findViewById( R.id.indicator);
    cri.setViewPager(risk);
   
    }
}



MyPagerAdapter.java

package com.example.viewpager;

import android.app.Activity;
import android.content.Context;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;

public class MyPagerAdapter extends PagerAdapter {
    View view;
    public int getCount() {
        return 3;
    }

    public Object instantiateItem(View collection, int position) {

        LayoutInflater inflater = (LayoutInflater) collection.getContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
          
        int resId = 0;
        switch (position) {
        case 0:
            resId = R.layout.risk;
            view = inflater.inflate(resId, null);

            ((ViewPager) collection).addView(view, 0);
            final TextView tv=(TextView)view.findViewById(R.id.textView1);
            tv.setOnClickListener(new OnClickListener() {
               
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    tv.setText("hello");
                }
            });
           
            break;
        case 1:
            resId = R.layout.risk1;
            view = inflater.inflate(resId, null);

            ((ViewPager) collection).addView(view, 0);
            break;
        case 2:
            resId = R.layout.risk2;
      
            view = inflater.inflate(resId, null);

            ((ViewPager) collection).addView(view, 0);
            break;
     
        }

    
        return view;
    }

    @Override
    public void destroyItem(View arg0, int arg1, Object arg2) {
        ((ViewPager) arg0).removeView((View) arg2);

    }


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

    }

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



under res folder Just create "color" folder and place the following files into it.

vpi__dark_theme.xml

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

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false" android:color="@color/vpi__bright_foreground_disabled_holo_dark"/>
    <item android:state_window_focused="false" android:color="@color/vpi__bright_foreground_holo_dark"/>
    <item android:state_pressed="true" android:color="@color/vpi__bright_foreground_holo_dark"/>
    <item android:state_selected="true" android:color="@color/vpi__bright_foreground_holo_dark"/>
    <!--item android:state_activated="true" android:color="@color/vpi__bright_foreground_holo_dark"/-->
    <item android:color="@color/vpi__bright_foreground_holo_dark"/> <!-- not selected -->
</selector>




vpi__light_theme.xml

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

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false" android:color="@color/vpi__bright_foreground_disabled_holo_light"/>
    <item android:state_window_focused="false" android:color="@color/vpi__bright_foreground_holo_light"/>
    <item android:state_pressed="true" android:color="@color/vpi__bright_foreground_holo_light"/>
    <item android:state_selected="true" android:color="@color/vpi__bright_foreground_holo_light"/>
    <!--item android:state_activated="true" android:color="@color/vpi__bright_foreground_holo_light"/-->
    <item android:color="@color/vpi__bright_foreground_holo_light"/> <!-- not selected -->
   
</selector>


Under the layout folder just place the below files...

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#000000" xmlns:app="http://schemas.android.com/apk/res/com.example.viewpager">
    <com.rakesh.view.CirclePageIndicator
       android:layout_marginTop="20dp"
        android:id="@+id/indicator"
       
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
       />
    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1" />
</LinearLayout>


 risk.xml


    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:text="Risk" />

    </RelativeLayout>

risk1.xml

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:text="Rakesh" />

    </RelativeLayout>
risk2.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
  <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:text="Rakesh L" />


</RelativeLayout>


Under Values folder place the following files..

strings.xml

<resources>
<string name="app_name">ViewPager</string>
    <string name="hello_world">Hello world!</string>
    <string name="menu_settings">Settings</string>
    <string name="title_activity_main">MainActivity</string>

</resources>
styles.xml
<resources>

    <style name="AppTheme" parent="android:Theme.Light" />

</resources>

vpi__attrs.xml

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

<resources>
    <declare-styleable name="ViewPagerIndicator">
        <!-- Style of the circle indicator. -->
        <attr name="vpiCirclePageIndicatorStyle" format="reference"/>
        <!-- Style of the icon indicator's views. -->
        <attr name="vpiIconPageIndicatorStyle" format="reference"/>
        <!-- Style of the line indicator. -->
        <attr name="vpiLinePageIndicatorStyle" format="reference"/>
        <!-- Style of the title indicator. -->
        <attr name="vpiTitlePageIndicatorStyle" format="reference"/>
        <!-- Style of the tab indicator's tabs. -->
        <attr name="vpiTabPageIndicatorStyle" format="reference"/>
        <!-- Style of the underline indicator. -->
        <attr name="vpiUnderlinePageIndicatorStyle" format="reference"/>
    </declare-styleable>

    <attr name="centered" format="boolean" />
    <attr name="selectedColor" format="color" />
    <attr name="strokeWidth" format="dimension" />
    <attr name="unselectedColor" format="color" />

    <declare-styleable name="CirclePageIndicator">
        <!-- Whether or not the indicators should be centered. -->
        <attr name="centered" />
        <!-- Color of the filled circle that represents the current page. -->
        <attr name="fillColor" format="color" />
        <!-- Color of the filled circles that represents pages. -->
        <attr name="pageColor" format="color" />
        <!-- Orientation of the indicator. -->
        <attr name="android:orientation"/>
        <!-- Radius of the circles. This is also the spacing between circles. -->
        <attr name="radius" format="dimension" />
        <!-- Whether or not the selected indicator snaps to the circles. -->
        <attr name="snap" format="boolean" />
        <!-- Color of the open circles. -->
        <attr name="strokeColor" format="color" />
        <!-- Width of the stroke used to draw the circles. -->
        <attr name="strokeWidth" />
        <!-- View background -->
        <attr name="android:background"/>
    </declare-styleable>

    <declare-styleable name="LinePageIndicator">
        <!-- Whether or not the indicators should be centered. -->
        <attr name="centered" />
        <!-- Color of the unselected lines that represent the pages. -->
        <attr name="unselectedColor" />
        <!-- Color of the selected line that represents the current page. -->
        <attr name="selectedColor" />
        <!-- Width of each indicator line. -->
        <attr name="lineWidth" format="dimension" />
        <!-- Width of each indicator line's stroke. -->
        <attr name="strokeWidth" />
        <!-- Width of the gap between each indicator line. -->
        <attr name="gapWidth" format="dimension" />
        <!-- View background -->
        <attr name="android:background"/>
    </declare-styleable>

    <declare-styleable name="TitlePageIndicator">
        <!-- Screen edge padding. -->
        <attr name="clipPadding" format="dimension" />
        <!-- Color of the footer line and indicator. -->
        <attr name="footerColor" format="color" />
        <!-- Height of the footer line. -->
        <attr name="footerLineHeight" format="dimension" />
        <!-- Style of the indicator. Default is triangle. -->
        <attr name="footerIndicatorStyle">
            <enum name="none" value="0" />
            <enum name="triangle" value="1" />
            <enum name="underline" value="2" />
        </attr>
        <!-- Height of the indicator above the footer line. -->
        <attr name="footerIndicatorHeight" format="dimension" />
        <!-- Left and right padding of the underline indicator. -->
        <attr name="footerIndicatorUnderlinePadding" format="dimension" />
        <!-- Padding between the bottom of the title and the footer. -->
        <attr name="footerPadding" format="dimension" />
        <!-- Position of the line. -->
        <attr name="linePosition">
            <enum name="bottom" value="0"/>
            <enum name="top" value="1"/>
        </attr>
        <!-- Color of the selected title. -->
        <attr name="selectedColor" />
        <!-- Whether or not the selected item is displayed as bold. -->
        <attr name="selectedBold" format="boolean" />
        <!-- Color of regular titles. -->
        <attr name="android:textColor" />
        <!-- Size of title text. -->
        <attr name="android:textSize" />
        <!-- Padding between titles when bumping into each other. -->
        <attr name="titlePadding" format="dimension" />
        <!-- Padding between titles and the top of the View. -->
        <attr name="topPadding" format="dimension" />
        <!-- View background -->
        <attr name="android:background"/>
    </declare-styleable>

    <declare-styleable name="UnderlinePageIndicator">
        <!-- Whether or not the selected indicator fades. -->
        <attr name="fades" format="boolean" />
        <!-- Length of the delay to fade the indicator. -->
        <attr name="fadeDelay" format="integer" />
        <!-- Length of the indicator fade to transparent. -->
        <attr name="fadeLength" format="integer" />
        <!-- Color of the selected line that represents the current page. -->
        <attr name="selectedColor" />
        <!-- View background -->
        <attr name="android:background"/>
    </declare-styleable>
</resources>

vpi__colors.xml

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

<resources>
    <color name="vpi__background_holo_dark">#ff000000</color>
    <color name="vpi__background_holo_light">#fff3f3f3</color>
    <color name="vpi__bright_foreground_holo_dark">@color/vpi__background_holo_light</color>
    <color name="vpi__bright_foreground_holo_light">@color/vpi__background_holo_dark</color>
    <color name="vpi__bright_foreground_disabled_holo_dark">#ff4c4c4c</color>
    <color name="vpi__bright_foreground_disabled_holo_light">#ffb2b2b2</color>
    <color name="vpi__bright_foreground_inverse_holo_dark">@color/vpi__bright_foreground_holo_light</color>
    <color name="vpi__bright_foreground_inverse_holo_light">@color/vpi__bright_foreground_holo_dark</color>
</resources>

vpi__defaults.xml

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

<resources>
    <bool name="default_circle_indicator_centered">true</bool>
    <color name="default_circle_indicator_fill_color">#FFFFFFFF</color>
    <color name="default_circle_indicator_page_color">#00000000</color>
    <integer name="default_circle_indicator_orientation">0</integer>
    <dimen name="default_circle_indicator_radius">3dp</dimen>
    <bool name="default_circle_indicator_snap">false</bool>
    <color name="default_circle_indicator_stroke_color">#FFDDDDDD</color>
    <dimen name="default_circle_indicator_stroke_width">1dp</dimen>

    <dimen name="default_line_indicator_line_width">12dp</dimen>
    <dimen name="default_line_indicator_gap_width">4dp</dimen>
    <dimen name="default_line_indicator_stroke_width">1dp</dimen>
    <color name="default_line_indicator_selected_color">#FF33B5E5</color>
    <color name="default_line_indicator_unselected_color">#FFBBBBBB</color>
    <bool name="default_line_indicator_centered">true</bool>

    <dimen name="default_title_indicator_clip_padding">4dp</dimen>
    <color name="default_title_indicator_footer_color">#FF33B5E5</color>
    <dimen name="default_title_indicator_footer_line_height">2dp</dimen>
    <integer name="default_title_indicator_footer_indicator_style">2</integer>
    <dimen name="default_title_indicator_footer_indicator_height">4dp</dimen>
    <dimen name="default_title_indicator_footer_indicator_underline_padding">20dp</dimen>
    <dimen name="default_title_indicator_footer_padding">7dp</dimen>
    <integer name="default_title_indicator_line_position">0</integer>
    <color name="default_title_indicator_selected_color">#FFFFFFFF</color>
    <bool name="default_title_indicator_selected_bold">true</bool>
    <color name="default_title_indicator_text_color">#BBFFFFFF</color>
    <dimen name="default_title_indicator_text_size">15dp</dimen>
    <dimen name="default_title_indicator_title_padding">5dp</dimen>
    <dimen name="default_title_indicator_top_padding">7dp</dimen>

    <bool name="default_underline_indicator_fades">true</bool>
    <integer name="default_underline_indicator_fade_delay">300</integer>
    <integer name="default_underline_indicator_fade_length">400</integer>
    <color name="default_underline_indicator_selected_color">#FF33B5E5</color>
</resources>

vpi__styles.xml

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

<resources>
    <style name="Theme.PageIndicatorDefaults" parent="android:Theme">
        <item name="vpiIconPageIndicatorStyle">@style/Widget.IconPageIndicator</item>
        <item name="vpiTabPageIndicatorStyle">@style/Widget.TabPageIndicator</item>
    </style>

    <style name="Widget">
    </style>

    <style name="Widget.TabPageIndicator" parent="Widget">
        <item name="android:gravity">center</item>
        <item name="android:background">@drawable/ic_launcher</item>
        <item name="android:paddingLeft">22dip</item>
        <item name="android:paddingRight">22dip</item>
        <item name="android:paddingTop">12dp</item>
        <item name="android:paddingBottom">12dp</item>
        <item name="android:textAppearance">@style/TextAppearance.TabPageIndicator</item>
        <item name="android:textSize">12sp</item>
        <item name="android:maxLines">1</item>
    </style>

    <style name="TextAppearance.TabPageIndicator" parent="Widget">
        <item name="android:textStyle">bold</item>
        <item name="android:textColor">@color/vpi__dark_theme</item>
    </style>

    <style name="Widget.IconPageIndicator" parent="Widget">
        <item name="android:layout_marginLeft">6dp</item>
        <item name="android:layout_marginRight">6dp</item>
    </style>
</resources>

Finally, AndroidManifest.xml


<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.viewpager"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>
   

Like CirclePageIndicator we can also use TabPageIndicator,TitlePageIndicator,UnderlinePageIndicator.. 

If u need code snippets of all of them or if u have any errors in these snippets... just comment to this post :)


I've attached the source code here

3 comments:

  1. This is the perfect way of to do page indicator in any app integration...... thank u ...

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  2. This comment has been removed by a blog administrator.

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  3. Thanks . This is easy to integrate. I need code for IconPageIndicator. Can you do the needful.

    ReplyDelete