Java tutorial
package com.dm.material.dashboard.candybar.adapters; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.Intent; import android.graphics.drawable.Drawable; import android.net.Uri; import android.support.annotation.NonNull; import android.support.v4.view.ViewCompat; import android.util.Log; import android.view.View; import android.view.ViewGroup; import android.webkit.URLUtil; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import com.danimahardhika.android.helpers.core.ColorHelper; import com.danimahardhika.android.helpers.core.DrawableHelper; import com.dm.material.dashboard.candybar.R; import com.dm.material.dashboard.candybar.items.Credit; import com.dm.material.dashboard.candybar.utils.ImageConfig; import com.danimahardhika.android.helpers.core.utils.LogUtil; import com.nostra13.universalimageloader.core.DisplayImageOptions; import com.nostra13.universalimageloader.core.ImageLoader; import com.nostra13.universalimageloader.core.assist.ImageSize; import com.nostra13.universalimageloader.core.display.CircleBitmapDisplayer; import com.nostra13.universalimageloader.core.imageaware.ImageViewAware; import java.util.List; /* * CandyBar - Material Dashboard * * Copyright (c) 2014-2016 Dani Mahardhika * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class CreditsAdapter extends BaseAdapter { private final Context mContext; private final List<Credit> mCredits; private final DisplayImageOptions.Builder mOptions; public CreditsAdapter(@NonNull Context context, @NonNull List<Credit> credits) { mContext = context; mCredits = credits; int color = ColorHelper.getAttributeColor(mContext, android.R.attr.textColorSecondary); Drawable drawable = DrawableHelper.getTintedDrawable(mContext, R.drawable.ic_toolbar_default_profile, color); mOptions = ImageConfig.getRawDefaultImageOptions(); mOptions.resetViewBeforeLoading(true); mOptions.cacheInMemory(true); mOptions.cacheOnDisk(true); mOptions.showImageForEmptyUri(drawable); mOptions.showImageOnFail(drawable); mOptions.showImageOnLoading(drawable); mOptions.displayer(new CircleBitmapDisplayer()); } @Override public int getCount() { return mCredits.size(); } @Override public Credit getItem(int position) { return mCredits.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View view, ViewGroup viewGroup) { ViewHolder holder; if (view == null) { view = View.inflate(mContext, R.layout.fragment_credits_item_list, null); holder = new ViewHolder(view); view.setTag(holder); } else { holder = (ViewHolder) view.getTag(); } Credit credit = mCredits.get(position); holder.title.setText(credit.getName()); holder.subtitle.setText(credit.getContribution()); holder.container.setOnClickListener(view1 -> { String link = credit.getLink(); if (URLUtil.isValidUrl(link)) { try { mContext.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(link))); } catch (ActivityNotFoundException e) { LogUtil.e(Log.getStackTraceString(e)); } } }); if (credit.getContribution().length() == 0) { holder.subtitle.setVisibility(View.GONE); } else { holder.subtitle.setVisibility(View.VISIBLE); } ImageLoader.getInstance().displayImage(credit.getImage(), new ImageViewAware(holder.image), mOptions.build(), new ImageSize(144, 144), null, null); return view; } class ViewHolder { private final LinearLayout container; private final TextView title; private final TextView subtitle; private final ImageView image; ViewHolder(View view) { container = view.findViewById(R.id.container); title = view.findViewById(R.id.title); subtitle = view.findViewById(R.id.subtitle); image = view.findViewById(R.id.image); int color = ColorHelper.getAttributeColor(mContext, android.R.attr.textColorSecondary); ViewCompat.setBackground(image, DrawableHelper.getTintedDrawable(mContext, R.drawable.ic_toolbar_circle, ColorHelper.setColorAlpha(color, 0.4f))); } } }