target, DataSource dataSource, boolean isFirstResource) {
51 | setColorList(resource, imgObj.toString());
52 | return false;
53 | }
54 | }).apply(RequestOptions.bitmapTransform(new RoundedCorners(20))).into(imageView);
55 | }
56 | }
57 |
58 |
59 | private void setColorList(Bitmap bitmap, String imgUrl) {
60 | if (colorList == null) {
61 | return;
62 | }
63 | palette = Palette.from(bitmap).generate();
64 | for (int i = 0; i < colorList.size(); i++) {
65 | if (colorList.get(i).getImgUrl().equals(imgUrl)) {// imgUrl作为识别标志
66 | if (palette.getVibrantSwatch() != null) {
67 | colorList.get(i).setVibrantColor(palette.getVibrantSwatch().getRgb());
68 | }
69 | if (palette.getDarkVibrantSwatch() != null) {
70 | colorList.get(i).setVibrantDarkColor(palette.getDarkVibrantSwatch().getRgb());
71 | }
72 | if (palette.getLightVibrantSwatch() != null) {
73 | colorList.get(i).setVibrantLightColor(palette.getLightVibrantSwatch().getRgb());
74 | }
75 | if (palette.getMutedSwatch() != null) {
76 | colorList.get(i).setMutedColor(palette.getMutedSwatch().getRgb());
77 | }
78 | if (palette.getDarkMutedSwatch() != null) {
79 | colorList.get(i).setMutedDarkColor(palette.getDarkMutedSwatch().getRgb());
80 | }
81 | if (palette.getLightVibrantSwatch() != null) {
82 | colorList.get(i).setMutedLightColor(palette.getLightVibrantSwatch().getRgb());
83 | }
84 | }
85 | }
86 | }
87 |
88 |
89 | /**
90 | * Vibrant （有活力）
91 | * Vibrant dark（有活力 暗色）
92 | * Vibrant light（有活力 亮色）
93 | * Muted （柔和）
94 | * Muted dark（柔和 暗色）
95 | * Muted light（柔和 亮色）
96 | */
97 |
98 | public int getVibrantColor(int position) {
99 | return colorList.get(position).getVibrantColor();
100 | }
101 |
102 | public int getVibrantDarkColor(int position) {
103 | return colorList.get(position).getVibrantDarkColor();
104 | }
105 |
106 | public int getVibrantLightColor(int position) {
107 | return colorList.get(position).getVibrantLightColor();
108 | }
109 |
110 | public int getMutedColor(int position) {
111 | return colorList.get(position).getMutedColor();
112 | }
113 |
114 | public int getMutedDarkColor(int position) {
115 | return colorList.get(position).getMutedDarkColor();
116 | }
117 |
118 | public int getMutedLightColor(int position) {
119 | return colorList.get(position).getMutedLightColor();
120 | }
121 | }
122 |
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/app/src/main/java/com/example/administrator/colorfulbanner/ColorInfo.java:
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1 | package com.example.administrator.colorfulbanner;
2 |
3 | /**
4 | * 作者：Zhout
5 | * 时间：2019/3/12 13:33
6 | * 描述：banner图片颜色渐变Bean
7 | *
8 | * Vibrant （有活力）
9 | * Vibrant dark（有活力 暗色）
10 | * Vibrant light（有活力 亮色）
11 | * Muted （柔和）
12 | * Muted dark（柔和 暗色）
13 | * Muted light（柔和 亮色）
14 | */
15 | public class ColorInfo {
16 | private String imgUrl;
17 | private int vibrantColor = 0xFF999999;
18 | private int vibrantDarkColor = 0xFF999999;
19 | private int vibrantLightColor = 0xFF999999;
20 | private int mutedColor = 0xFF999999;
21 | private int mutedDarkColor = 0xFF999999;
22 | private int mutedLightColor = 0xFF999999;
23 |
24 | public String getImgUrl() {
25 | return imgUrl;
26 | }
27 |
28 | public void setImgUrl(String imgUrl) {
29 | this.imgUrl = imgUrl;
30 | }
31 |
32 |
33 | public int getVibrantColor() {
34 | return vibrantColor;
35 | }
36 |
37 | public void setVibrantColor(int vibrantColor) {
38 | this.vibrantColor = vibrantColor;
39 | }
40 |
41 | public int getVibrantDarkColor() {
42 | return vibrantDarkColor;
43 | }
44 |
45 | public void setVibrantDarkColor(int vibrantDarkColor) {
46 | this.vibrantDarkColor = vibrantDarkColor;
47 | }
48 |
49 | public int getVibrantLightColor() {
50 | return vibrantLightColor;
51 | }
52 |
53 | public void setVibrantLightColor(int vibrantLightColor) {
54 | this.vibrantLightColor = vibrantLightColor;
55 | }
56 |
57 | public int getMutedColor() {
58 | return mutedColor;
59 | }
60 |
61 | public void setMutedColor(int mutedColor) {
62 | this.mutedColor = mutedColor;
63 | }
64 |
65 | public int getMutedDarkColor() {
66 | return mutedDarkColor;
67 | }
68 |
69 | public void setMutedDarkColor(int mutedDarkColor) {
70 | this.mutedDarkColor = mutedDarkColor;
71 | }
72 |
73 | public int getMutedLightColor() {
74 | return mutedLightColor;
75 | }
76 |
77 | public void setMutedLightColor(int mutedLightColor) {
78 | this.mutedLightColor = mutedLightColor;
79 | }
80 | }
81 |
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/app/src/main/java/com/example/administrator/colorfulbanner/MainActivity.java:
--------------------------------------------------------------------------------
1 | package com.example.administrator.colorfulbanner;
2 |
3 | import android.app.Activity;
4 | import android.os.Build;
5 | import android.os.Handler;
6 | import android.support.v4.graphics.ColorUtils;
7 | import android.support.v4.view.ViewPager;
8 | import android.support.v7.app.AppCompatActivity;
9 | import android.os.Bundle;
10 | import android.util.Log;
11 | import android.view.Window;
12 | import android.view.WindowManager;
13 | import android.widget.ImageView;
14 |
15 | import com.youth.banner.Banner;
16 | import com.youth.banner.listener.OnBannerListener;
17 |
18 | import java.util.ArrayList;
19 | import java.util.List;
20 |
21 | public class MainActivity extends AppCompatActivity {
22 |
23 | private String TAG = "AAA";
24 | private List bannerList = new ArrayList<>();
25 | private List colorList = new ArrayList<>();
26 | private BannerImageLoader imageLoader;
27 | private ImageView ivBannerHeadBg;
28 | private Banner banner;
29 | private int count;
30 | private boolean isInit = true;
31 |
32 | @Override
33 | protected void onCreate(Bundle savedInstanceState) {
34 | super.onCreate(savedInstanceState);
35 | requestWindowFeature(Window.FEATURE_NO_TITLE);
36 | setContentView(R.layout.activity_main);
37 |
38 | initView();
39 | initBanner();
40 | }
41 |
42 | private void initView() {
43 | ivBannerHeadBg = (ImageView) findViewById(R.id.iv_banner_head_bg);
44 | banner = (Banner) findViewById(R.id.banner);
45 |
46 | banner.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
47 | @Override
48 | public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
49 | if (positionOffset > 1) {//会出现极个别大于1的数据
50 | return;
51 | }
52 | //修正position，解决两头颜色错乱，来自Banner控件源码
53 | if (position == 0) {
54 | position = count;
55 | }
56 | if (position > count) {
57 | position = 1;
58 | }
59 | int pos = (position + 1) % count;//很关键
60 |
61 | int vibrantColor = ColorUtils.blendARGB(imageLoader.getVibrantColor(pos), imageLoader.getVibrantColor(pos + 1), positionOffset);
62 | ivBannerHeadBg.setBackgroundColor(vibrantColor);
63 | setStatusBarColor(MainActivity.this, vibrantColor);
64 | }
65 |
66 | @Override
67 | public void onPageSelected(final int position) {
68 | if(isInit){// 第一次,延时加载才能拿到颜色
69 | isInit = false;
70 | new Handler().postDelayed(new Runnable() {
71 | @Override
72 | public void run() {
73 | int vibrantColor = imageLoader.getVibrantColor(1);
74 | ivBannerHeadBg.setBackgroundColor(vibrantColor);
75 | setStatusBarColor(MainActivity.this, vibrantColor);
76 | }
77 | }, 200);
78 |
79 | }
80 | }
81 |
82 | @Override
83 | public void onPageScrollStateChanged(int i) {
84 |
85 | }
86 | });
87 | }
88 |
89 | /**
90 | * 初始化banner
91 | */
92 | private void initBanner() {
93 | bannerList.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1556532613936&di=3769695217e3424f18c3d23966ecd4dc&imgtype=0&src=http%3A%2F%2Fpic.90sjimg.com%2Fback_pic%2Fqk%2Fback_origin_pic%2F00%2F04%2F19%2F70e2846ebc02ae10161f25bf7f5461a1.jpg");
94 | bannerList.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1556532665664&di=9ead9eb8a9fe2af9a01b0dd39f3e41f4&imgtype=0&src=http%3A%2F%2Fbpic.588ku.com%2Fback_pic%2F05%2F37%2F28%2F475a43591370453.jpg");
95 | bannerList.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1556532613934&di=0be1c6bbf0441bd19ef6d4e3ce799263&imgtype=0&src=http%3A%2F%2Fpic96.nipic.com%2Ffile%2F20160430%2F7036970_215739900000_2.jpg");
96 | bannerList.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1556532613936&di=4dd453940f49d9801826e6b820490957&imgtype=0&src=http%3A%2F%2Fpic161.nipic.com%2Ffile%2F20180410%2F26429156_154754410034_2.jpg");
97 | bannerList.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1556532613935&di=39c387012e3d8fa2eef90129eaf83c5c&imgtype=0&src=http%3A%2F%2Fpic25.nipic.com%2F20121211%2F7031681_170238437383_2.jpg");
98 | count = bannerList.size();
99 | colorList.clear();
100 | for (int i = 0; i <= count + 1; i++) {
101 | ColorInfo info = new ColorInfo();
102 | if (i == 0) {
103 | info.setImgUrl(bannerList.get(count - 1));
104 | } else if (i == count + 1) {
105 | info.setImgUrl(bannerList.get(0));
106 | } else {
107 | info.setImgUrl(bannerList.get(i - 1));
108 | }
109 | colorList.add(info);
110 | }
111 |
112 | imageLoader = new BannerImageLoader(colorList);
113 | banner.setImageLoader(imageLoader);
114 | //设置图片集合
115 | banner.setImages(bannerList);
116 | //设置banner动画效果
117 | // banner.setBannerAnimation(Transformer.DepthPage);
118 | //设置轮播时间
119 | banner.setDelayTime(3000);
120 | banner.setOnBannerListener(new OnBannerListener() {
121 | @Override
122 | public void OnBannerClick(int position) {
123 |
124 | }
125 | });
126 | //banner设置方法全部调用完毕时最后调用
127 | banner.start();
128 |
129 | }
130 |
131 | /**
132 | * 设置状态栏颜色
133 | *
134 | * @param activity
135 | */
136 | public static void setStatusBarColor(Activity activity, int color) {
137 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
138 | Window window = activity.getWindow();
139 | //状态栏改变颜色。
140 | window.setStatusBarColor(color);
141 | }
142 | }
143 | }
144 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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1 |
7 |
12 |
13 |
19 |