Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2015 Omada Health, Inc * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.github.OrangeGangsters.circularbarpager.library; import android.content.Context; import android.content.res.TypedArray; import android.os.Build; import android.support.v4.view.GestureDetectorCompat; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.util.AttributeSet; import android.view.GestureDetector; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.widget.RelativeLayout; import com.github.OrangeGangsters.circularbarpager.library.viewpager.FadeViewPagerTransformer; import com.nineoldandroids.animation.Animator; import com.viewpagerindicator.CirclePageIndicator; import daniel.olivier.stoyan.pager.R; /** * Created by oliviergoutay and stoyan on 12/10/14. */ public class CircularBarPager extends RelativeLayout { /** * The current {@link android.content.Context} of the app */ private Context mContext; /** * The inflated {@link CircularBar} */ private CircularBar mCircularBar; /** * The inflated {@link android.support.v4.view.ViewPager} */ private ViewPager mViewPager; /** * The inflated {@link com.viewpagerindicator.CirclePageIndicator} */ private CirclePageIndicator mCirclePageIndicator; /** * The ratio used to set the padding to the {@link android.support.v4.view.ViewPager} * relative to the size of this complete view. */ private int mPaddingRatio = 12; /** * Used for getting the info that the padding has already been set in {@link #onMeasure(int, int)}. * Improve performance. */ private boolean isPaddingSet; public CircularBarPager(Context context) { this(context, null); } public CircularBarPager(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CircularBarPager(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); mContext = context; initializeView(attrs, defStyleAttr); } /** * Init the view by getting the {@link CircularBar}, * the {@link android.support.v4.view.ViewPager} and the {@link com.viewpagerindicator.CirclePageIndicator}. * Init also some default values as PageTranformer etc... */ private void initializeView(AttributeSet attrs, int defStyleAttr) { if (attrs != null) { final TypedArray attributes = mContext.getTheme().obtainStyledAttributes(attrs, R.styleable.CircularViewPager, defStyleAttr, 0); boolean enableOnClick = attributes .getBoolean(R.styleable.CircularViewPager_progress_pager_on_click_enabled, false); isPaddingSet = false; LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); RelativeLayout view = (RelativeLayout) inflater.inflate(R.layout.circularbar_view_pager, this); mCircularBar = (CircularBar) view.findViewById(R.id.circular_bar); mViewPager = (ViewPager) view.findViewById(R.id.view_pager); mCirclePageIndicator = (CirclePageIndicator) view.findViewById(R.id.circle_page_indicator); //Default init if (mCircularBar != null) { mCircularBar.loadStyledAttributes(attrs, defStyleAttr); } if (mViewPager != null) { mViewPager.setPageTransformer(false, new FadeViewPagerTransformer()); } //If we enable onClick, ie. we can switch between pages with both a swipe and a touch //Touch just goes to the next page % number of pages if (enableOnClick) { final GestureDetectorCompat tapGestureDetector = new GestureDetectorCompat(getContext(), new GestureDetector.SimpleOnGestureListener() { @Override public boolean onSingleTapConfirmed(MotionEvent e) { mViewPager.setCurrentItem( (mViewPager.getCurrentItem() + 1) % mViewPager.getAdapter().getCount()); return super.onSingleTapConfirmed(e); } }); if (mViewPager != null) { mViewPager.setOnTouchListener(new OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { tapGestureDetector.onTouchEvent(event); return false; } }); } } } } /** * Apply a {@link android.support.v4.view.ViewPager#setPadding(int, int, int, int)} and * {@link android.support.v4.view.ViewPager#setPageMargin(int)} in order to get a nicer animation * on the {@link android.support.v4.view.ViewPager} inside the {@link CircularBar} */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); if (!isPaddingSet && mViewPager != null) { int paddingForViewPager = this.getMeasuredWidth() / mPaddingRatio; mViewPager.setPadding(paddingForViewPager, mViewPager.getPaddingTop(), paddingForViewPager, mViewPager.getPaddingBottom()); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { mViewPager.setPageMargin( -(int) (((float) mViewPager.getPaddingLeft() + (float) mViewPager.getPaddingRight()) * 2.0f)); } isPaddingSet = true; } } public void setViewPagerAdapter(PagerAdapter pagerAdapter) { mViewPager.setAdapter(pagerAdapter); mCirclePageIndicator.setViewPager(mViewPager); } /** * Method to add a listener to call on animations * * @param listener The listener to call */ public void addListener(Animator.AnimatorListener listener) { mCircularBar.addListener(listener); } /** * Removes the listener provided * * @param listener The listener to remove * @return True if it was in the list and removed, false otherwise */ public boolean removeListener(Animator.AnimatorListener listener) { return mCircularBar.removeListener(listener); } /** * Removes all animation listeners */ public void removeAllListeners() { mCircularBar.removeAllListeners(); } /** * @return The circular bar of this view */ public CircularBar getCircularBar() { return mCircularBar; } /** * @return The view pager of this view */ public ViewPager getViewPager() { return mViewPager; } /** * @return The Page indicator of this view */ public CirclePageIndicator getCirclePageIndicator() { return mCirclePageIndicator; } /** * Set the padding ratio between the size of this view and the padding that should have {@link android.support.v4.view.ViewPager} * inside of it. Set to 12 by default. If you want to disable, set it to 0. * * @param paddingRatio the ratio */ public void setPaddingRatio(int paddingRatio) { this.mPaddingRatio = paddingRatio; isPaddingSet = false; } }