parseTabs() {
78 | if (tabs == null) {
79 | tabs = new ArrayList<>(AVG_NUMBER_OF_TABS);
80 | try {
81 | int eventType;
82 | do {
83 | eventType = parser.next();
84 | if (eventType == XmlResourceParser.START_TAG && TAB_TAG.equals(parser.getName())) {
85 | BottomBarTab bottomBarTab = parseNewTab(parser, tabs.size());
86 | tabs.add(bottomBarTab);
87 | }
88 | } while (eventType != XmlResourceParser.END_DOCUMENT);
89 | } catch (IOException | XmlPullParserException e) {
90 | e.printStackTrace();
91 | throw new TabParserException();
92 | }
93 | }
94 |
95 | return tabs;
96 | }
97 |
98 | @NonNull
99 | private BottomBarTab parseNewTab(@NonNull XmlResourceParser parser, @IntRange(from = 0) int containerPosition) {
100 | BottomBarTab workingTab = tabWithDefaults();
101 | workingTab.setIndexInContainer(containerPosition);
102 |
103 | final int numberOfAttributes = parser.getAttributeCount();
104 | for (int i = 0; i < numberOfAttributes; i++) {
105 | @TabAttribute
106 | String attrName = parser.getAttributeName(i);
107 | switch (attrName) {
108 | case ID:
109 | workingTab.setId(parser.getIdAttributeResourceValue(i));
110 | break;
111 | case ICON:
112 | workingTab.setIconResId(parser.getAttributeResourceValue(i, RESOURCE_NOT_FOUND));
113 | break;
114 | case TITLE:
115 | workingTab.setTitle(getTitleValue(parser, i));
116 | break;
117 | case INACTIVE_COLOR:
118 | int inactiveColor = getColorValue(parser, i);
119 | if (inactiveColor == COLOR_NOT_SET) continue;
120 | workingTab.setInActiveColor(inactiveColor);
121 | break;
122 | case ACTIVE_COLOR:
123 | int activeColor = getColorValue(parser, i);
124 | if (activeColor == COLOR_NOT_SET) continue;
125 | workingTab.setActiveColor(activeColor);
126 | break;
127 | case BAR_COLOR_WHEN_SELECTED:
128 | int barColorWhenSelected = getColorValue(parser, i);
129 | if (barColorWhenSelected == COLOR_NOT_SET) continue;
130 | workingTab.setBarColorWhenSelected(barColorWhenSelected);
131 | break;
132 | case BADGE_BACKGROUND_COLOR:
133 | int badgeBackgroundColor = getColorValue(parser, i);
134 | if (badgeBackgroundColor == COLOR_NOT_SET) continue;
135 | workingTab.setBadgeBackgroundColor(badgeBackgroundColor);
136 | break;
137 | case BADGE_HIDES_WHEN_ACTIVE:
138 | boolean badgeHidesWhenActive = parser.getAttributeBooleanValue(i, true);
139 | workingTab.setBadgeHidesWhenActive(badgeHidesWhenActive);
140 | break;
141 | case IS_TITLELESS:
142 | boolean isTitleless = parser.getAttributeBooleanValue(i, false);
143 | workingTab.setIsTitleless(isTitleless);
144 | break;
145 | }
146 | }
147 |
148 | return workingTab;
149 | }
150 |
151 | @NonNull
152 | private BottomBarTab tabWithDefaults() {
153 | BottomBarTab tab = new BottomBarTab(context);
154 | tab.setConfig(defaultTabConfig);
155 |
156 | return tab;
157 | }
158 |
159 | @NonNull
160 | private String getTitleValue(@NonNull XmlResourceParser parser, @IntRange(from = 0) int attrIndex) {
161 | int titleResource = parser.getAttributeResourceValue(attrIndex, 0);
162 | return titleResource == RESOURCE_NOT_FOUND
163 | ? parser.getAttributeValue(attrIndex) : context.getString(titleResource);
164 | }
165 |
166 | @ColorInt
167 | private int getColorValue(@NonNull XmlResourceParser parser, @IntRange(from = 0) int attrIndex) {
168 | int colorResource = parser.getAttributeResourceValue(attrIndex, 0);
169 |
170 | if (colorResource == RESOURCE_NOT_FOUND) {
171 | try {
172 | String colorValue = parser.getAttributeValue(attrIndex);
173 | return Color.parseColor(colorValue);
174 | } catch (Exception ignored) {
175 | return COLOR_NOT_SET;
176 | }
177 | }
178 |
179 | return ContextCompat.getColor(context, colorResource);
180 | }
181 |
182 | @Retention(RetentionPolicy.SOURCE)
183 | @StringDef({
184 | ID,
185 | ICON,
186 | TITLE,
187 | INACTIVE_COLOR,
188 | ACTIVE_COLOR,
189 | BAR_COLOR_WHEN_SELECTED,
190 | BADGE_BACKGROUND_COLOR,
191 | BADGE_HIDES_WHEN_ACTIVE,
192 | IS_TITLELESS
193 | })
194 | @interface TabAttribute {
195 | String ID = "id";
196 | String ICON = "icon";
197 | String TITLE = "title";
198 | String INACTIVE_COLOR = "inActiveColor";
199 | String ACTIVE_COLOR = "activeColor";
200 | String BAR_COLOR_WHEN_SELECTED = "barColorWhenSelected";
201 | String BADGE_BACKGROUND_COLOR = "badgeBackgroundColor";
202 | String BADGE_HIDES_WHEN_ACTIVE = "badgeHidesWhenActive";
203 | String IS_TITLELESS = "iconOnly";
204 | }
205 |
206 | @SuppressWarnings("WeakerAccess")
207 | public static class TabParserException extends RuntimeException {
208 | // This class is just to be able to have a type of Runtime Exception that will make it clear where the error originated.
209 | }
210 | }
211 |
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/bottom-bar/src/main/java/com/roughike/bottombar/TabSelectionInterceptor.java:
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1 | package com.roughike.bottombar;
2 |
3 | import android.support.annotation.IdRes;
4 |
5 | /*
6 | * BottomBar library for Android
7 | * Copyright (c) 2016 Iiro Krankka (http://github.com/roughike).
8 | *
9 | * Licensed under the Apache License, Version 2.0 (the "License");
10 | * you may not use this file except in compliance with the License.
11 | * You may obtain a copy of the License at
12 | *
13 | * http://www.apache.org/licenses/LICENSE-2.0
14 | *
15 | * Unless required by applicable law or agreed to in writing, software
16 | * distributed under the License is distributed on an "AS IS" BASIS,
17 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 | * See the License for the specific language governing permissions and
19 | * limitations under the License.
20 | */
21 | public interface TabSelectionInterceptor {
22 | /**
23 | * The method being called when currently visible {@link BottomBarTab} is about to change.
24 | *
25 | * This listener is fired when the current {@link BottomBar} is about to change. This gives
26 | * an opportunity to interrupt the {@link BottomBarTab} change.
27 | *
28 | * @param oldTabId the currently visible {@link BottomBarTab}
29 | * @param newTabId the {@link BottomBarTab} that will be switched to
30 | * @return true if you want to override/stop the tab change, false to continue as normal
31 | */
32 | boolean shouldInterceptTabSelection(@IdRes int oldTabId, @IdRes int newTabId);
33 | }
34 |
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/bottom-bar/src/main/java/com/roughike/bottombar/VerticalScrollingBehavior.java:
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1 | package com.roughike.bottombar;
2 |
3 | import android.content.Context;
4 | import android.os.Parcelable;
5 | import android.support.annotation.IntDef;
6 | import android.support.annotation.NonNull;
7 | import android.support.design.widget.CoordinatorLayout;
8 | import android.support.v4.view.WindowInsetsCompat;
9 | import android.util.AttributeSet;
10 | import android.view.View;
11 |
12 | import java.lang.annotation.Retention;
13 | import java.lang.annotation.RetentionPolicy;
14 |
15 | /**
16 | * Created by Nikola D. on 11/22/2015.
17 | *
18 | * Credit goes to Nikola Despotoski:
19 | * https://github.com/NikolaDespotoski
20 | */
21 | abstract class VerticalScrollingBehavior extends CoordinatorLayout.Behavior {
22 |
23 | private int totalDyUnconsumed = 0;
24 | private int totalDy = 0;
25 | @ScrollDirection
26 | private int overScrollDirection = ScrollDirection.SCROLL_NONE;
27 | @ScrollDirection
28 | private int scrollDirection = ScrollDirection.SCROLL_NONE;
29 |
30 | VerticalScrollingBehavior(Context context, AttributeSet attrs) {
31 | super(context, attrs);
32 | }
33 |
34 | VerticalScrollingBehavior() {
35 | super();
36 | }
37 |
38 | @Retention(RetentionPolicy.SOURCE)
39 | @IntDef({ScrollDirection.SCROLL_DIRECTION_UP, ScrollDirection.SCROLL_DIRECTION_DOWN, ScrollDirection.SCROLL_NONE})
40 | @interface ScrollDirection {
41 | int SCROLL_DIRECTION_UP = 1;
42 | int SCROLL_DIRECTION_DOWN = -1;
43 | int SCROLL_NONE = 0;
44 | }
45 |
46 |
47 | /*
48 | @return Overscroll direction: SCROLL_DIRECTION_UP, CROLL_DIRECTION_DOWN, SCROLL_NONE
49 | */
50 | @ScrollDirection
51 | int getOverScrollDirection() {
52 | return overScrollDirection;
53 | }
54 |
55 |
56 | /**
57 | * @return Scroll direction: SCROLL_DIRECTION_UP, SCROLL_DIRECTION_DOWN, SCROLL_NONE
58 | */
59 |
60 | @ScrollDirection
61 | int getScrollDirection() {
62 | return scrollDirection;
63 | }
64 |
65 |
66 | /**
67 | * @param coordinatorLayout
68 | * @param child
69 | * @param direction Direction of the overscroll: SCROLL_DIRECTION_UP, SCROLL_DIRECTION_DOWN
70 | * @param currentOverScroll Unconsumed value, negative or positive based on the direction;
71 | * @param totalOverScroll Cumulative value for current direction
72 | */
73 | abstract void onNestedVerticalOverScroll(CoordinatorLayout coordinatorLayout, V child, @ScrollDirection int direction, int currentOverScroll, int totalOverScroll);
74 |
75 | /**
76 | * @param scrollDirection Direction of the overscroll: SCROLL_DIRECTION_UP, SCROLL_DIRECTION_DOWN
77 | */
78 | abstract void onDirectionNestedPreScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dx, int dy, int[] consumed, @ScrollDirection int scrollDirection);
79 |
80 | @Override
81 | public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, V child, View directTargetChild, View target, int nestedScrollAxes) {
82 | return (nestedScrollAxes & View.SCROLL_AXIS_VERTICAL) != 0;
83 | }
84 |
85 | @Override
86 | public void onNestedScrollAccepted(CoordinatorLayout coordinatorLayout, V child, View directTargetChild, View target, int nestedScrollAxes) {
87 | super.onNestedScrollAccepted(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
88 | }
89 |
90 | @Override
91 | public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target) {
92 | super.onStopNestedScroll(coordinatorLayout, child, target);
93 | }
94 |
95 | @Override
96 | public void onNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
97 | super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
98 | if (dyUnconsumed > 0 && totalDyUnconsumed < 0) {
99 | totalDyUnconsumed = 0;
100 | overScrollDirection = ScrollDirection.SCROLL_DIRECTION_UP;
101 | } else if (dyUnconsumed < 0 && totalDyUnconsumed > 0) {
102 | totalDyUnconsumed = 0;
103 | overScrollDirection = ScrollDirection.SCROLL_DIRECTION_DOWN;
104 | }
105 | totalDyUnconsumed += dyUnconsumed;
106 | onNestedVerticalOverScroll(coordinatorLayout, child, overScrollDirection, dyConsumed, totalDyUnconsumed);
107 | }
108 |
109 | @Override
110 | public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dx, int dy, int[] consumed) {
111 | super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed);
112 | if (dy > 0 && totalDy < 0) {
113 | totalDy = 0;
114 | scrollDirection = ScrollDirection.SCROLL_DIRECTION_UP;
115 | } else if (dy < 0 && totalDy > 0) {
116 | totalDy = 0;
117 | scrollDirection = ScrollDirection.SCROLL_DIRECTION_DOWN;
118 | }
119 | totalDy += dy;
120 | onDirectionNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, scrollDirection);
121 | }
122 |
123 |
124 | @Override
125 | public boolean onNestedFling(CoordinatorLayout coordinatorLayout, V child, View target, float velocityX, float velocityY, boolean consumed) {
126 | super.onNestedFling(coordinatorLayout, child, target, velocityX, velocityY, consumed);
127 | scrollDirection = velocityY > 0 ? ScrollDirection.SCROLL_DIRECTION_UP : ScrollDirection.SCROLL_DIRECTION_DOWN;
128 | return onNestedDirectionFling(coordinatorLayout, child, target, velocityX, velocityY, scrollDirection);
129 | }
130 |
131 | abstract boolean onNestedDirectionFling(CoordinatorLayout coordinatorLayout, V child, View target, float velocityX, float velocityY, @ScrollDirection int scrollDirection);
132 |
133 | @Override
134 | public boolean onNestedPreFling(CoordinatorLayout coordinatorLayout, V child, View target, float velocityX, float velocityY) {
135 | return super.onNestedPreFling(coordinatorLayout, child, target, velocityX, velocityY);
136 | }
137 |
138 | @NonNull
139 | @Override
140 | public WindowInsetsCompat onApplyWindowInsets(CoordinatorLayout coordinatorLayout, V child, WindowInsetsCompat insets) {
141 | return super.onApplyWindowInsets(coordinatorLayout, child, insets);
142 | }
143 |
144 | @Override
145 | public Parcelable onSaveInstanceState(CoordinatorLayout parent, V child) {
146 | return super.onSaveInstanceState(parent, child);
147 | }
148 |
149 | }
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/bottom-bar/src/main/res/drawable/bb_bottom_bar_top_shadow.xml:
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/bottom-bar/src/main/res/layout-v21/bb_bottom_bar_item_container.xml:
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/bottom-bar/src/main/res/layout/bb_bottom_bar_item_container.xml:
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/bottom-bar/src/main/res/layout/bb_bottom_bar_item_container_tablet.xml:
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/bottom-bar/src/main/res/layout/bb_bottom_bar_item_fixed.xml:
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/bottom-bar/src/main/res/layout/bb_bottom_bar_item_fixed_tablet.xml:
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/bottom-bar/src/main/res/layout/bb_bottom_bar_item_shifting.xml:
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/bottom-bar/src/main/res/layout/bb_bottom_bar_item_titleless.xml:
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9 |
10 |
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/bottom-bar/src/main/res/values-land/bools.xml:
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1 |
2 |
3 | false
4 |
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/bottom-bar/src/main/res/values/attrs.xml:
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2 |
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/bottom-bar/src/main/res/values/bools.xml:
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1 |
2 |
3 | false
4 | true
5 |
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/bottom-bar/src/main/res/values/colors.xml:
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1 |
2 |
3 | #747474
4 | #212121
5 | #505050
6 |
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/bottom-bar/src/main/res/values/dimensions.xml:
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1 |
2 |
3 | 56dp
4 | 8dp
5 | 4dp
6 |
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/bottom-bar/src/main/res/values/ids.xml:
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1 |
2 |
3 |
10 |
11 | ## Version 2.0 released!
12 |
13 | [The latest version before that can be found in the v1 branch](https://github.com/roughike/BottomBar/tree/v1)
14 |
15 | * Cleaner code and better APIs
16 | * No more unnecessary stuff or spaghetti mess
17 | * Now the look, feel and behavior is defined in XML, as it should be
18 | * No more nasty regressions, thanks to the automated tests
19 | * **Everything is a little different compared to earlier, but it's for the greater good!**
20 |
21 | [How to contribute](https://github.com/roughike/BottomBar/blob/master/README.md#contributions)
22 |
23 | [Changelog](https://github.com/roughike/BottomBar/blob/master/CHANGELOG.md)
24 |
25 | ## What?
26 |
27 | A custom view component that mimics the new [Material Design Bottom Navigation pattern](https://www.google.com/design/spec/components/bottom-navigation.html).
28 |
29 | ## Does it work on my Grandpa Gary's HTC Dream?
30 |
31 | Nope. The minSDK version is **API level 11 (Honeycomb).**
32 |
33 | ## Gimme that Gradle sweetness, pls?
34 |
35 | ```groovy
36 | compile 'com.roughike:bottom-bar:2.3.1'
37 | ```
38 |
39 | **Maven:**
40 | ```xml
41 |