Java tutorial
/* * MIT License * * Copyright (c) 2017 Jan Heinrich Reimer * * 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.heinrichreimersoftware.materialdrawer.adapter; import android.content.Context; import android.graphics.PorterDuff; import android.os.Build; import android.support.annotation.NonNull; import android.support.v4.content.ContextCompat; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.FrameLayout; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.TextView; import com.heinrichreimersoftware.materialdrawer.R; import com.heinrichreimersoftware.materialdrawer.structure.DrawerHeaderItem; import com.heinrichreimersoftware.materialdrawer.structure.DrawerItem; import com.heinrichreimersoftware.materialdrawer.theme.DrawerTheme; import java.util.ArrayList; import java.util.List; /** * Adapter to be used with {@link com.heinrichreimersoftware.materialdrawer.DrawerView} to display a list of drawer items. */ public class DrawerAdapter extends ArrayAdapter<DrawerItem> { private int selectedPosition = -1; private DrawerTheme drawerTheme; public DrawerAdapter(Context context, List<DrawerItem> dataSet) { super(context, R.layout.md_drawer_item, dataSet); } @NonNull @Override public View getView(int position, View convertView, @NonNull ViewGroup parent) { DrawerItem drawerItem = getItem(position); DrawerTheme drawerTheme = this.drawerTheme; assert drawerItem != null; if (drawerItem.hasDrawerTheme()) { drawerTheme = drawerItem.getDrawerTheme(); } if (drawerItem.isHeader()) { if (convertView == null || convertView instanceof LinearLayout) { convertView = LayoutInflater.from(getContext()).inflate(R.layout.md_drawer_header_item, parent, false); } final HeaderViewHolder viewHolder = new HeaderViewHolder(convertView); if (drawerTheme.isLightTheme()) { viewHolder.getHeaderDivider() .setBackgroundColor(ContextCompat.getColor(getContext(), R.color.md_divider_light)); } else { viewHolder.getHeaderDivider() .setBackgroundColor(ContextCompat.getColor(getContext(), R.color.md_divider_dark)); } DrawerHeaderItem drawerHeaderItem = (DrawerHeaderItem) drawerItem; viewHolder.getHeaderRoot().setBackgroundColor(drawerTheme.getBackgroundColor()); if (drawerHeaderItem.hasTitle()) { viewHolder.getHeaderTitleRoot().setVisibility(View.VISIBLE); viewHolder.getHeaderRoot().setPadding(0, getContext().getResources().getDimensionPixelSize(R.dimen.md_divider_margin), 0, 0); viewHolder.getHeaderTitle().setText(drawerHeaderItem.getTitle()); viewHolder.getHeaderTitle().setTextColor(drawerTheme.getTextColorSecondary()); } else { viewHolder.getHeaderTitleRoot().setVisibility(View.GONE); viewHolder.getHeaderRoot().setPadding(0, getContext().getResources().getDimensionPixelSize(R.dimen.md_divider_margin), 0, getContext().getResources().getDimensionPixelSize(R.dimen.md_divider_margin)); } } else { if (convertView == null || !(convertView instanceof RelativeLayout)) { convertView = LayoutInflater.from(getContext()).inflate(R.layout.md_drawer_item, parent, false); } final ViewHolder viewHolder = new ViewHolder(convertView); int iconTint = -1; int textColorPrimary = drawerTheme.getTextColorPrimary(); if (drawerTheme.isLightTheme()) { viewHolder.getRoot() .setForeground(ContextCompat.getDrawable(getContext(), R.drawable.md_selector_light)); } else { viewHolder.getRoot() .setForeground(ContextCompat.getDrawable(getContext(), R.drawable.md_selector_dark)); } if (drawerTheme.getBackgroundColor() != 0) { viewHolder.getRoot().setBackgroundColor(drawerTheme.getBackgroundColor()); } else { viewHolder.getRoot() .setBackgroundColor(ContextCompat.getColor(getContext(), android.R.color.transparent)); } if (position == selectedPosition) { viewHolder.getRoot().setSelected(true); textColorPrimary = iconTint = drawerTheme.getHighlightColor(); } else { viewHolder.getRoot().setSelected(false); } if (drawerItem.hasImage()) { viewHolder.getImageView().setVisibility(View.VISIBLE); viewHolder.getImageView().setImageDrawable(drawerItem.getImage()); int imageSize; if (drawerItem.getImageMode() == DrawerItem.AVATAR) { imageSize = getContext().getResources().getDimensionPixelSize(R.dimen.md_avatar_size); } else { imageSize = getContext().getResources().getDimensionPixelSize(R.dimen.md_icon_size); if (iconTint != -1 && drawerItem.getImageMode() == DrawerItem.ICON) { viewHolder.getImageView().setColorFilter(iconTint, PorterDuff.Mode.SRC_IN); } else { viewHolder.getImageView().getDrawable().clearColorFilter(); } } ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) viewHolder.getImageView() .getLayoutParams(); layoutParams.height = imageSize; layoutParams.width = getContext().getResources().getDimensionPixelSize(R.dimen.md_baseline_content) - getContext().getResources().getDimensionPixelSize(R.dimen.md_baseline); int imagePaddingEnd = getContext().getResources().getDimensionPixelSize(R.dimen.md_baseline_content) - getContext().getResources().getDimensionPixelSize(R.dimen.md_baseline) - imageSize; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { viewHolder.getImageView().setPaddingRelative(0, 0, imagePaddingEnd, 0); } else { viewHolder.getImageView().setPadding(0, 0, imagePaddingEnd, 0); } } else { viewHolder.getImageView().setVisibility(View.GONE); } if (drawerItem.hasTextPrimary()) { viewHolder.getTextViewPrimary().setText(drawerItem.getTextPrimary()); viewHolder.getTextViewPrimary().setTextColor(textColorPrimary); if (drawerItem.hasTextSecondary() && (drawerItem.getTextMode() == DrawerItem.TWO_LINE || drawerItem.getTextMode() == DrawerItem.THREE_LINE)) { viewHolder.getTextViewSecondary().setText(drawerItem.getTextSecondary()); viewHolder.getTextViewSecondary().setTextColor(drawerTheme.getTextColorSecondary()); viewHolder.getTextViewSecondary().setVisibility(View.VISIBLE); if (drawerItem.getTextMode() == DrawerItem.THREE_LINE) { viewHolder.getTextViewSecondary().setMaxLines(2); } else { viewHolder.getTextViewSecondary().setMaxLines(1); } } else { viewHolder.getTextViewSecondary().setVisibility(View.GONE); } } else if (drawerItem.hasTextSecondary()) { viewHolder.getTextViewPrimary().setText(drawerItem.getTextPrimary()); viewHolder.getTextViewPrimary().setTextColor(textColorPrimary); viewHolder.getTextViewSecondary().setVisibility(View.GONE); } } return convertView; } @Override public boolean isEnabled(int position) { DrawerItem item = getItem(position); return item != null && item.hasOnItemClickListener(); } public void setDrawerTheme(DrawerTheme theme) { this.drawerTheme = theme; notifyDataSetChanged(); } public List<DrawerItem> getItems() { List<DrawerItem> items = new ArrayList<>(); for (int i = 0; i < getCount(); i++) { items.add(getItem(i)); } return items; } public void select(int position) { if (position >= 0 && position < getCount()) { selectedPosition = position; notifyDataSetChanged(); } else { selectedPosition = -1; notifyDataSetChanged(); } } public void clearSelection() { select(-1); } public int getSelectedPosition() { return selectedPosition; } private static class ViewHolder { private final FrameLayout mRoot; private final ImageView mImageView; private final TextView mTextViewPrimary; private final TextView mTextViewSecondary; public ViewHolder(View root) { mRoot = (FrameLayout) root; mImageView = (ImageView) root.findViewById(R.id.mdImage); mTextViewPrimary = (TextView) root.findViewById(R.id.mdTextPrimary); mTextViewSecondary = (TextView) root.findViewById(R.id.mdTextSecondary); } public FrameLayout getRoot() { return mRoot; } public ImageView getImageView() { return mImageView; } public TextView getTextViewPrimary() { return mTextViewPrimary; } public TextView getTextViewSecondary() { return mTextViewSecondary; } } private static class HeaderViewHolder { private final LinearLayout mHeaderRoot; private final View mHeaderDivider; private final LinearLayout mHeaderTitleRoot; private final TextView mHeaderTitle; public HeaderViewHolder(View root) { mHeaderRoot = (LinearLayout) root; mHeaderDivider = root.findViewById(R.id.mdDivider); mHeaderTitleRoot = (LinearLayout) root.findViewById(R.id.mdHeaderTitleRoot); mHeaderTitle = (TextView) root.findViewById(R.id.mdHeaderTitle); } public LinearLayout getHeaderRoot() { return mHeaderRoot; } public View getHeaderDivider() { return mHeaderDivider; } public LinearLayout getHeaderTitleRoot() { return mHeaderTitleRoot; } public TextView getHeaderTitle() { return mHeaderTitle; } } }