Mohan Shiwakoti
1 year ago
8 changed files with 329 additions and 59 deletions
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108app/src/main/java/com/remit/jmecustomer/common/customwidgets/EndlessRecyclerViewScrollListener.java
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28app/src/main/java/com/remit/jmecustomer/features/beneficiaryDetail/BeneficiaryDetailActivity.kt
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6app/src/main/java/com/remit/jmecustomer/features/beneficiaryDetail/adapters/SendMethodAdapter.kt
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6app/src/main/java/com/remit/jmecustomer/features/homeV3/view/HomeFragmentV3.kt
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48app/src/main/java/com/remit/jmecustomer/features/myTransfers/view/MyBeneficiaryAllActivity.kt
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75app/src/main/java/com/remit/jmecustomer/features/myTransfers/view/MyTransfersFragment.kt
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19app/src/main/res/layout/fragment_beneficiary_all.xml
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10app/src/main/res/layout/fragment_my_transfers.xml
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package com.remit.jmecustomer.common.customwidgets; |
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import androidx.recyclerview.widget.GridLayoutManager; |
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import androidx.recyclerview.widget.LinearLayoutManager; |
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import androidx.recyclerview.widget.RecyclerView; |
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import androidx.recyclerview.widget.StaggeredGridLayoutManager; |
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public abstract class EndlessRecyclerViewScrollListener extends RecyclerView.OnScrollListener { |
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// The minimum amount of items to have below your current scroll position |
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// before loading more. |
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private int visibleThreshold = 5; |
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// The current offset index of data you have loaded |
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private int currentPage = 0; |
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// The total number of items in the dataset after the last load |
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private int previousTotalItemCount = 0; |
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// True if we are still waiting for the last set of data to load. |
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private boolean loading = true; |
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// Sets the starting page index |
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private int startingPageIndex = 0; |
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RecyclerView.LayoutManager mLayoutManager; |
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public EndlessRecyclerViewScrollListener(LinearLayoutManager layoutManager) { |
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this.mLayoutManager = layoutManager; |
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} |
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public EndlessRecyclerViewScrollListener(GridLayoutManager layoutManager) { |
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this.mLayoutManager = layoutManager; |
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visibleThreshold = visibleThreshold * layoutManager.getSpanCount(); |
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} |
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public EndlessRecyclerViewScrollListener(StaggeredGridLayoutManager layoutManager) { |
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this.mLayoutManager = layoutManager; |
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visibleThreshold = visibleThreshold * layoutManager.getSpanCount(); |
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} |
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public int getLastVisibleItem(int[] lastVisibleItemPositions) { |
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int maxSize = 0; |
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for (int i = 0; i < lastVisibleItemPositions.length; i++) { |
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if (i == 0) { |
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maxSize = lastVisibleItemPositions[i]; |
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} |
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else if (lastVisibleItemPositions[i] > maxSize) { |
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maxSize = lastVisibleItemPositions[i]; |
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} |
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} |
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return maxSize; |
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} |
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// This happens many times a second during a scroll, so be wary of the code you place here. |
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// We are given a few useful parameters to help us work out if we need to load some more data, |
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// but first we check if we are waiting for the previous load to finish. |
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@Override |
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public void onScrolled(RecyclerView view, int dx, int dy) { |
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int lastVisibleItemPosition = 0; |
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int totalItemCount = mLayoutManager.getItemCount(); |
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if (mLayoutManager instanceof StaggeredGridLayoutManager) { |
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int[] lastVisibleItemPositions = ((StaggeredGridLayoutManager) mLayoutManager).findLastVisibleItemPositions(null); |
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// get maximum element within the list |
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lastVisibleItemPosition = getLastVisibleItem(lastVisibleItemPositions); |
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} else if (mLayoutManager instanceof GridLayoutManager) { |
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lastVisibleItemPosition = ((GridLayoutManager) mLayoutManager).findLastVisibleItemPosition(); |
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} else if (mLayoutManager instanceof LinearLayoutManager) { |
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lastVisibleItemPosition = ((LinearLayoutManager) mLayoutManager).findLastVisibleItemPosition(); |
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} |
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// If the total item count is zero and the previous isn't, assume the |
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// list is invalidated and should be reset back to initial state |
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if (totalItemCount < previousTotalItemCount) { |
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this.currentPage = this.startingPageIndex; |
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this.previousTotalItemCount = totalItemCount; |
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if (totalItemCount == 0) { |
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this.loading = true; |
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} |
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} |
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// If it’s still loading, we check to see if the dataset count has |
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// changed, if so we conclude it has finished loading and update the current page |
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// number and total item count. |
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if (loading && (totalItemCount > previousTotalItemCount)) { |
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loading = false; |
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previousTotalItemCount = totalItemCount; |
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} |
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// If it isn’t currently loading, we check to see if we have breached |
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// the visibleThreshold and need to reload more data. |
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// If we do need to reload some more data, we execute onLoadMore to fetch the data. |
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// threshold should reflect how many total columns there are too |
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if (!loading && (lastVisibleItemPosition + visibleThreshold) > totalItemCount) { |
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currentPage++; |
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onLoadMore(currentPage, totalItemCount, view); |
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loading = true; |
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} |
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} |
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// Call this method whenever performing new searches |
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public void resetState() { |
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this.currentPage = this.startingPageIndex; |
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this.previousTotalItemCount = 0; |
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this.loading = true; |
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} |
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// Defines the process for actually loading more data based on page |
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public abstract void onLoadMore(int page, int totalItemsCount, RecyclerView view); |
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} |
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