एनिमेटेड वेक्टर ड्रायबल

Question

के साथ टैबलेआउट समस्या के साथ व्यूपेगर मैं वेक्टर ड्रावेबल पर कुछ एनिमेशन के साथ सरल व्यूपेजर को लागू करने की कोशिश कर रहा हूं।
this very good example डॉट स्विचिंग के साथ अच्छा टैब स्क्रॉलिंग के लिए समाधान।

केवल अंतर यह है कि मैं वेक्टर एनिमेशन का उपयोग कर रहा हूं। एक गतिविधि के रूप में यह एक आकर्षण की तरह काम करता है, ViewPager जोड़े के साथ, एनिमेशन लगातार शुरू नहीं हुआ है।

compileSdkVersion 25 
buildToolsVersion "26.0.2" 
targetSdkVersion 25 

मैं अपने डिवाइस (SG7), मैं तोड़ सूत्री बीच स्क्रीन पर animation.start()

• पर सेट पर डिबगिंग रहा हूँ, तोड़ सूत्री हमेशा
लागू नहीं किया गया है
• स्क्रीन पर अधिक बार & 3, एनिमेशन
• टॉट्स का उपयोग करते समय कूदते समय 1 & 3 एनिमेशन हमेशा ट्रिगर किए जाते हैं! लेकिन 1-2 या 2-3 करते समय नहीं !!

यह सब एक बड़े वेक्टर ड्रावर पर काम कर रहा है जिसमें 3 समूह एनिमेटेड हैं।
2 कैप्शन प्रारंभ में फिसल रहे हैं, और फिर असीमित रोलिंग स्पिन है, स्पिन हमेशा काम करते हैं।

गतिविधि

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main_activity); 

    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager()); 

    // Set up the ViewPager with the sections adapter. 
    mViewPager = (ViewPager) findViewById(R.id.pager); 
    mHideHandler.post(mHidePart2Runnable); 
    mViewPager.setAdapter(mSectionsPagerAdapter); 

    TabLayout tabLayout = (TabLayout) findViewById(R.id.tabDots); 
    tabLayout.setupWithViewPager(mViewPager, true); 

    }; 

टुकड़ा:

public class SectionsPagerAdapter extends FragmentPagerAdapter { 

    public SectionsPagerAdapter(FragmentManager fm) { 
     super(fm); 
    } 

    @Override 
    public Fragment getItem(int position) { 
     // getItem is called to instantiate the fragment for the given page. 
     // Return a PlaceholderFragment (defined as a static inner class below). 
     return PlaceholderFragment.newInstance(position + 1); 
    } 

    @Override 
    public int getCount() { 
     // Show 3 total pages. 
     return 3; 
    } 

स्टेटिक टुकड़ा

 public static class PlaceholderFragment extends Fragment { 
    /** 
    * The fragment argument representing the section number for this 
    * fragment. 
    */ 
    private static final String ARG_SECTION_NUMBER = "section_number"; 

    public PlaceholderFragment() { 
    } 

    /** 
    * Returns a new instance of this fragment for the given section 
    * number. 
    */ 
    public static PlaceholderFragment newInstance(int sectionNumber) { 
     PlaceholderFragment fragment = new PlaceholderFragment(); 
     Bundle args = new Bundle(); 
     args.putInt(ARG_SECTION_NUMBER, sectionNumber); 
     fragment.setArguments(args); 
     return fragment; 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.activity_fullscreen, container, false); 
     View imgView = rootView.findViewById(R.id.vec_anim); 

     Drawable drawable = ((ImageView)imgView).getDrawable(); 
     if (drawable instanceof Animatable) { 
      ((Animatable) drawable).start(); 
     }; 
     return rootView; 
    } 

मैं इस सब के लिए नया हूँ, (प्रदर्शन पर एसवीजी आकार के प्रभाव प्रोफ़ाइल करना चाहता था एसवीजीएस को कैश करने और दृश्य निर्माण पर एनिमेशन को ट्रिगर करने की सोच शायद ...) और मैं इसे सब अनुकूलित करने की कोशिश कर रहा हूं इसे आसान बनाओ। लेकिन सबसे पहले, यह ठीक से काम नहीं करता है।

पृष्ठों को स्वैप करते समय हमेशा ब्रेकपॉइंट क्यों नहीं मारा जाता है?
क्या ऐसा करने का कोई बेहतर तरीका है?

Answer 1

इस कोशिश,

1. पुस्तकालय compile com.mcxiaoke.viewpagerindicator:library:2.4.1@aar' जोड़ें।

2. आपका मुख्य लेआउट फ़ाइल,

<RelativeLayout 
     android:id="@+id/pager_layout" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:gravity="right"> 
     <android.support.v4.view.ViewPager 
      android:id="@+id/pager_profile" 
      android:layout_width="fill_parent" 
      android:layout_height="match_parent" 
      app:layout_behavior="@string/appbar_scrolling_view_behavior"> 
     </android.support.v4.view.ViewPager> 

     <yourpackagename.utils.CirclePageIndicator 
      android:id="@+id/cover_photo_indicator" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:foregroundGravity="right" 
      android:layout_alignParentBottom="true" 
      android:layout_alignParentEnd="true" 
      android:padding="10dip" /> 
</RelativeLayout> 

1. कस्टम कक्षा बनाएं CirclePageIndicator

/** 
* Draws circles (one for each view). The current view position is filled and 
* others are only stroked. 
*/ 
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); 
     //default_circle_indicator_fill_color 
     final int defaultFillColor = res.getColor(R.color.holo_blue_dark); 
     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; 
    } 

    @Override 
    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; 
    } 

    @Override 
    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(); 
    } 

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

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

    @Override 
    public void notifyDataSetChanged() { 
     invalidate(); 
    } 

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

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

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

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

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

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

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

    /* 
    * (non-Javadoc) 
    * 
    * @see android.view.View#onMeasure(int, int) 
    */ 
    @Override 
    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; 
    } 

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

    @Override 
    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(); 
     } 

     @Override 
     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>() { 
      @Override 
      public SavedState createFromParcel(Parcel in) { 
       return new SavedState(in); 
      } 

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

1. बनाएं indicator_tags.xmlres -> values अंदर

---

<resources> 

    <bool name="default_circle_indicator_centered">true</bool> 

    <color name="default_circle_indicator_fill_color">#FFFF0000</color> 
    <color name="default_circle_indicator_page_color">#00000000</color> 

    <integer name="default_circle_indicator_orientation">0</integer> 

    <dimen name="default_circle_indicator_radius">4dp</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> 

    <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> 

तरह MainActivity से इस कॉल

// setup the view pager with its adapter 
    vpagerProfile.setAdapter(objProfilePageTopListAdapter); 

    // initialize circular indicator class 
    mCirclePageIndicator = (CirclePageIndicator)findViewById(R.id.cover_photo_indicator); 

    mCirclePageIndicator.setPageColor(android.R.color.transparent); 

    // set viewpager to indicator so it can indicate when you change the page 
    mCirclePageIndicator.setViewPager(vpagerProfile); 

Answer 2

ब्रेकपॉइंट दूसरे खंड में नहीं बुलाया जाता है क्योंकि यह पहले या तीसरे के साथ बनाया जाता है। एंड्रॉइड हमेशा एक ही समय में कम से कम 2 टुकड़े बनाता है - जो फोकस में है और अगला जो फोकस में आ सकता है (या तो आगे या पीछे)। यही कारण है कि आप पाएंगे कि आपके मामले में मध्य खंड हमेशा कैश में होता है और इसलिए यह "ऑनक्रेट" कभी अलग से निष्पादित नहीं होगा लेकिन 1 या 3 के साथ संयोजन में

व्यूपेगर के साथ एनीमेशन सिंक्रनाइज़ करने का प्रयास करना एक दुःस्वप्न है। हालांकि, अगर आपको वास्तव में अवश्य ही ViewPager.OnPageChangeListener लागू करना होगा और viewpager के getCurrentItem() को पहचानने के लिए कोड लिखना होगा। एक बार जब आप जानते हैं कि आप किस टुकड़े पर हैं, तो आप एनीमेशन को शुरू कर सकते हैं जैसा आप चाहें।

इससे आपको कोड की अत्यधिक लाइनों के बिना व्यवहार का अधिक नियंत्रण मिलना चाहिए।

मुझे बताएं कि क्या आपको किसी निश्चित बिंदु को विस्तारित करने की आवश्यकता है।