Android 圆形颜色拾取器代码,Android颜色拾取Palette

た入场券 2022-10-17 11:23 269阅读 0赞

首先Palette是干嘛的？

Palette是从Bitmap中提取颜色，然后可以把这个颜色设置给背景色、toolbar、TextView等等控件，使界面保持颜色风格统一协调。

效果图：

![b32f6ffd7720bf94a4802736cc5b012b.png][]

![2c5f5bd2e2a3eaf018fff76221f73870.png][]

![ca8d9d7147dbe919e0c78fb00f80f1d4.png][]

![b17ce8c2be5b3d27c026dec0d15a93dd.png][]

![979a2919ddc7c8eaa7556c7239f0382b.png][]

![a493ef3779a63b68e6a779975d1b5973.png][]

使用流程：

首先添加依赖：    compile files('libs/android-support-v7-palette.jar')

![84cbeba77812e96e839220cae5e41629.png][]

添加jar包

接下来就是主界面代码：类中都有注释，界面就是4个fragment页面。

public class MainActivity extends AppCompatActivity \{

@Bind(R.id.tabs)

TabLayout tabs;

@Bind(R.id.viewPager)

ViewPager viewPager;

@Bind(R.id.bt)

Button bT;

List fragmentList;

@Override

protected void onCreate(Bundle savedInstanceState) \{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity\_main);

ButterKnife.bind(this);

setTabFragment();

bT.setOnClickListener(new View.OnClickListener() \{

@Override

public void onClick(View v) \{

Intent intent = new Intent(MainActivity.this, ListViewActivity.class);

startActivity(intent);

\});

private void setTabFragment() \{

//设置tabLayout

tabs.setTabMode(TabLayout.MODE\_FIXED);//设置tab模式，当前为系统默认模式

List tabList = new ArrayList<>();

tabList.add("Tab1");

tabList.add("Tab2");

tabList.add("Tab3");

tabList.add("Tab4");

tabs.addTab(tabs.newTab().setText(tabList.get(0)));

tabs.addTab(tabs.newTab().setText(tabList.get(1)));

tabs.addTab(tabs.newTab().setText(tabList.get(2)));

tabs.addTab(tabs.newTab().setText(tabList.get(3)));

//添加fragment

fragmentList = new ArrayList<>();

Tab1Fragment tab1Fragment = new Tab1Fragment();

Tab2Fragment tab2Fragment = new Tab2Fragment();

Tab3Fragment tab3Fragment = new Tab3Fragment();

Tab4Fragment tab4Fragment = new Tab4Fragment();

fragmentList.add(tab1Fragment);

fragmentList.add(tab2Fragment);

fragmentList.add(tab3Fragment);

fragmentList.add(tab4Fragment);

//设置adapter

TabFragmentAdapter adapter = new TabFragmentAdapter(getSupportFragmentManager(), fragmentList, tabList);

viewPager.setAdapter(adapter);

tabs.setupWithViewPager(viewPager);//将TabLayout和ViewPager关联

tabs.setTabsFromPagerAdapter(adapter);//给Tabs设置适配器

//监听tabs页面切换

tabs.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() \{

@Override

public void onTabSelected(TabLayout.Tab tab) \{

//页面切换时提取页面颜色

colorChange(tab.getPosition());

@Override

public void onTabUnselected(TabLayout.Tab tab) \{

@Override

public void onTabReselected(TabLayout.Tab tab) \{

\});

//默认第一页时提取页面颜色

colorChange(0);

private static final int\[\] drawables = \{R.mipmap.a3, R.mipmap.a2, R.mipmap.a3, R.mipmap.a2\};

private void colorChange(int position) \{

// 用来提取颜色的Bitmap

Bitmap bitmap = BitmapFactory.decodeResource(getResources(), drawables\[position\]);

// 使用Palette来设置从Bitmap中提取出的颜色

Palette.generateAsync(bitmap, new Palette.PaletteAsyncListener() \{

@Override

public void onGenerated(Palette palette) \{

Palette.Swatch vibrantSwatch = palette.getVibrantSwatch();

if (vibrantSwatch == null) return;

if (android.os.Build.VERSION.SDK\_INT >= 21) \{

Window window = getWindow();

//顶部状态栏颜色加深

window.setStatusBarColor(colorBurn(vibrantSwatch.getRgb()));

tabs.setBackgroundColor(vibrantSwatch.getRgb());

\});

/\*

\* 颜色加深处理

\* \*/

private int colorBurn(int RGBValues) \{

int red = RGBValues >> 16 & 0xFF;

int green = RGBValues >> 8 & 0xFF;

int blue = RGBValues & 0xFF;

red = (int) Math.floor(red \* (1 - 0.1));

green = (int) Math.floor(green \* (1 - 0.1));

blue = (int) Math.floor(blue \* (1 - 0.1));

return Color.rgb(red, green, blue);

项目下载地址：想了解的可以下载Demo来看一下

标签：Palette,tabs,void,拾取,int,add,new,Android,tabList

来源： https://blog.csdn.net/zhangkaiyazky/article/details/88049591

[b32f6ffd7720bf94a4802736cc5b012b.png]: /images/20221014/3ea02c4f1c934b658e6d506f18680784.png
[2c5f5bd2e2a3eaf018fff76221f73870.png]: /images/20221014/1d623a48eacd46c6a1f6e3010b694f18.png
[ca8d9d7147dbe919e0c78fb00f80f1d4.png]: /images/20221014/ab623df0b714492a8d52d1fcbb54cb56.png
[b17ce8c2be5b3d27c026dec0d15a93dd.png]: /images/20221014/c817674005ad44f8a245755d014be9c0.png
[979a2919ddc7c8eaa7556c7239f0382b.png]: /images/20221014/2b1a1db330ac4186be620f7be0708757.png
[a493ef3779a63b68e6a779975d1b5973.png]: /images/20221014/97f555e6bc724785a797d8e5231c22c4.png
[84cbeba77812e96e839220cae5e41629.png]: /images/20221014/0135ef196f5c4f738ba1af48ebcddb31.png