如何根据android材料设计中的图像颜色更改工具栏和状态栏颜色的颜色？

Question

我开始学习 Android 材料设计。我学到了一些新东西 棒棒糖版本中的功能。今天我正在尝试根据图像的颜色更改工具栏和状态栏的颜色。谁能指导我或提供有关如何执行此操作的任何链接？

例如，此处状态栏和工具栏的颜色会在更改视图分页器选项卡时发生变化。先感谢您。

styles.xml：

   < style name="MyMaterialTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
            <item name="windowNoTitle">true</item>
            <item name="windowActionBar">false</item>
            <item name="colorPrimary">@color/colorPrimary</item>
            <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
            <item name="colorAccent">@color/colorAccent</item>
        </style>

主活动：

public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener,FragmentDrawerRight.FragmentDrawerListener1 {

    private static String TAG = MainActivity.class.getSimpleName();


    private Toolbar mToolbar;
    ViewPager viewPager;
    TabLayout tabLayout;
    private FragmentDrawer drawerFragment;
    private FragmentDrawerRight  drawerFragmentRight;
    private ImageView pone,ptwo;
    DrawerLayout drawer_layout;
    int mutedColor;
    private CollapsingToolbarLayout collapsing_toolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        collapsing_toolbar  = (CollapsingToolbarLayout)findViewById(R.id.collapsing_toolbar);
        mToolbar = (Toolbar) findViewById(R.id.toolbar);

        setSupportActionBar(mToolbar);

        ptwo=(ImageView)mToolbar.findViewById(R.id.ptwo);


        drawerFragment = (FragmentDrawer)
                getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
        drawerFragmentRight = (FragmentDrawerRight)
                getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer1);

        drawer_layout = (DrawerLayout) findViewById(R.id.drawer_layout);

        drawerFragment.setUp(R.id.fragment_navigation_drawer, drawer_layout, mToolbar);
        drawerFragmentRight.setUp(R.id.fragment_navigation_drawer1, drawer_layout, mToolbar);
        drawerFragment.setDrawerListener(this);
        drawerFragmentRight.setDrawerListener(this);

        viewPager = (ViewPager) findViewById(R.id.viewpager);
        setupViewPager(viewPager);

        tabLayout = (TabLayout) findViewById(R.id.tabs);
        tabLayout.setupWithViewPager(viewPager);

        ptwo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(!drawer_layout.isDrawerOpen(GravityCompat.END)){
                    drawer_layout.openDrawer(GravityCompat.END);
                    drawer_layout.closeDrawer(GravityCompat.START);
                }
            }
        });


    }

    private void setupViewPager(ViewPager viewPager) {
        ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
        adapter.addFrag(new OneFragment(), "ONE");
        adapter.addFrag(new TwoFragment(), "TWO");
        adapter.addFrag(new ThreeFragment(), "THREE");
        adapter.addFrag(new FourFragment(), "FOUR");
        adapter.addFrag(new FiveFragment(), "FIVE");
        adapter.addFrag(new SixFragment(), "SIX");
        adapter.addFrag(new SevenFragment(), "SEVEN");
        adapter.addFrag(new EightFragment(), "EIGHT");
        adapter.addFrag(new NineFragment(), "NINE");
        adapter.addFrag(new TenFragment(), "TEN");
        viewPager.setAdapter(adapter);
    }

    class ViewPagerAdapter extends FragmentPagerAdapter {
        private final List<Fragment> mFragmentList = new ArrayList<>();
        private final List<String> mFragmentTitleList = new ArrayList<>();

        public ViewPagerAdapter(FragmentManager manager) {
            super(manager);
        }

        @Override
        public Fragment getItem(int position) {
            return mFragmentList.get(position);
        }

        @Override
        public int getCount() {
            return mFragmentList.size();
        }

        public void addFrag(Fragment fragment, String title) {
            mFragmentList.add(fragment);
            mFragmentTitleList.add(title);
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return mFragmentTitleList.get(position);
        }
    }

    @Override
    public void onDrawerItemSelected(View view, int position) {
        displayView(position);
    }

    private void displayView(int position) {
        viewPager.setCurrentItem(position);
        getSupportActionBar().setTitle(getResources().getStringArray(R.array.nav_drawer_labels)[position]);
    }

    private void displayView1(int position) {
        Fragment fragment = null;
        String title = getString(R.string.app_name);
        switch (position) {
            case 0:
                fragment = new OneFragment();
                title = getString(R.string.title_home);
                break;
            case 1:
                fragment = new TwoFragment();
                if (Build.VERSION.SDK_INT >= 21) {
                    getWindow().setNavigationBarColor(getResources().getColor(R.color.colorAccent));

                }
                title = getString(R.string.title_friends);


                break;
            case 2:
                fragment = new ThreeFragment();
                title = getString(R.string.title_messages);
                break;
            case 3:
                fragment = new FourFragment();
                title = getString(R.string.title_home);
                break;
            case 4:
                fragment = new FiveFragment();
                title = getString(R.string.title_friends);
                break;
            case 5:
                fragment = new SixFragment();
                title = getString(R.string.title_messages);
                break;
            default:
                break;
        }

        if (fragment != null) {

            getSupportActionBar().setTitle(title);
        }
    }
}

activty_main：

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

            <android.support.design.widget.CollapsingToolbarLayout
                android:id="@+id/collapsing_toolbar"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:fitsSystemWindows="true"
                app:contentScrim="?attr/colorPrimary"
                app:expandedTitleMarginBottom="32dp"
                app:expandedTitleMarginEnd="64dp"
                app:expandedTitleMarginStart="48dp"
                app:layout_scrollFlags="scroll|exitUntilCollapsed">
                <ImageView
                    android:id="@+id/header"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="@drawable/ic_profile"
                    android:fitsSystemWindows="true"
                    android:scaleType="centerCrop"
                    app:layout_collapseMode="parallax" />
                <android.support.v7.widget.Toolbar
                    android:id="@+id/toolbar"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"
                    android:background="?attr/colorPrimary"
                    app:layout_scrollFlags="scroll|enterAlways"
                    app:popupTheme="@style/ThemeOverlay.AppCompat.Light" >
                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:paddingRight="15dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:gravity="center"
                            android:visibility="invisible"
                            android:textSize="20sp"
                            android:textColor="@android:color/white"
                            android:layout_weight="1"
                            android:text="Reload"
                            />
                        <ImageView
                            android:id="@+id/ptwo"
                            android:layout_width="25dp"
                            android:layout_height="25dp"
                            android:layout_gravity="right|center_vertical"
                            android:src="@drawable/ic_profile"/>
                    </LinearLayout>

                </android.support.v7.widget.Toolbar>
            </android.support.design.widget.CollapsingToolbarLayout>




            <android.support.design.widget.TabLayout
                android:id="@+id/tabs"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:tabMode="scrollable"/>
        </android.support.design.widget.AppBarLayout>

        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior" />
        <!--<LinearLayout
            android:id="@+id/container_toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <include
                android:id="@+id/toolbar"
                layout="@layout/toolbar" />
        </LinearLayout>

        <FrameLayout
            android:id="@+id/container_body"
            android:layout_width="fill_parent"
            android:layout_height="0dp"
            android:layout_weight="1" />
-->

    </LinearLayout>


    <fragment
        android:id="@+id/fragment_navigation_drawer"
        android:name="info.androidhive.materialdesign.activity.FragmentDrawer"
        android:layout_width="@dimen/nav_drawer_width"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:layout="@layout/fragment_navigation_drawer"
        tools:layout="@layout/fragment_navigation_drawer" />
    <fragment
        android:id="@+id/fragment_navigation_drawer1"
        android:name="info.androidhive.materialdesign.activity.FragmentDrawerRight"
        android:layout_width="@dimen/nav_drawer_width"
        android:layout_height="match_parent"
        android:layout_gravity="end"
        app:layout="@layout/fragment_navigation_drawer_right"
        tools:layout="@layout/fragment_navigation_drawer_right" />






</android.support.v4.widget.DrawerLayout>

一个片段：

公共类 OneFragment 扩展片段 {

 public HomeFragment() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_home, container, false);


        // Inflate the layout for this fragment
        return rootView;
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
    }

    @Override
    public void onDetach() {
        super.onDetach();
    }
}

fragment_home.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="info.androidhive.materialdesign.activity.HomeFragment">


    <TextView
        android:id="@+id/label"
        android:layout_alignParentTop="true"
        android:layout_marginTop="100dp"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:textSize="45dp"
        android:text="HOME"
        android:textStyle="bold"/>

    <TextView
        android:layout_below="@id/label"
        android:layout_centerInParent="true"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="12dp"
        android:layout_marginTop="10dp"
        android:gravity="center_horizontal"
        android:text="Edit fragment_home.xml to change the appearance" />

</RelativeLayout>

colors.xml：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#303f95</color>
    <color name="colorPrimaryDark">#3f5185</color>
    <color name="textColorPrimary">#FFFFFF</color>
    <color name="windowBackground">#FFFFFF</color>
    <color name="navigationBarColor">#000000</color>
    <color name="colorAccent">#FF80AB</color>
    <color name="colorAccentt">#b6b6b6</color>
    <color name="primary">@color/blue_500</color>
    <color name="primaryDark">@color/blue_700</color>
    <color name="textPrimary">@color/text_white_text_icons_100</color>
</resources>

Answer 1

在style.xml 中创建您的自定义主题。然后在您的清单中为您想要的每个活动设置每个主题：

style.xml：

<style name="Activity1Theme" parent="MyMaterialTheme.Base">
     <item name="colorPrimary">@color/blue</item>
     <item name="colorPrimaryDark">@color/darkblue</item>
</style>

<style name="Activity2Theme" parent="MyMaterialTheme.Base">
     <item name="colorPrimary">@color/green</item>
     <item name="colorPrimaryDark">@color/darkgreen</item>
</style>

清单：

<activity
        android:name=".Activity1Theme"
        android:theme="@style/Activity1Theme"></activity>
<activity
        android:name=".Activity2Theme"
        android:theme="@style/Activity2Theme"></activity>

编辑：

如果您需要为片段设置它们，请尝试片段中的以下代码：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

// create ContextThemeWrapper from the original Activity Context with the custom theme
final Context contextThemeWrapper = new ContextThemeWrapper(getActivity(), R.style.yourCustomTheme);

// clone the inflater using the ContextThemeWrapper
LayoutInflater localInflater = inflater.cloneInContext(contextThemeWrapper);

// inflate the layout using the cloned inflater, not default inflater
return localInflater.inflate(R.layout.yourLayout, container, false);
}

Answer 2

使用Pallete API

 Palette.from(myBitmap).generate(new Palette.PaletteAsyncListener() {
                @Override
                public void onGenerated(Palette palette) {

                    toolbar.setBackgroundColor(palette.getVibrantColor(getResources().getColor(R.color.primary)));
                    getWindow().setStatusBarColor(palette.getVibrantColor(getResources().getColor(R.color.primary)));
                }
            });

myBitmap 是您要从中提取颜色的图像。 同样对于 API 21 及更高版本，如果您打算为状态栏和导航栏着色，则需要添加以下标志：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
    }

Answer 3

我不确定您是要针对此问题寻求程序化解决方案，还是只想了解步骤。

您基本上可以分两步完成。

1. 找到图片中最主要/最显眼的颜色。
2. 获得该颜色稍深的阴影。

这两个问题已经在 stackoverflow 上提出并回答了。

对于问题1，您可以关注 https://stackoverflow.com/a/10530562/5512274

问题2，可以关注https://stackoverflow.com/a/4928826/5512274

一切顺利:)

Answer 4

我在 Kitkat 上尝试了这段代码，效果很好：

 void getAverageColor(){
        Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.aaa); //here put your drawable 

        int height=bitmap.getHeight();
        int width=bitmap.getWidth();
        int pixelCount = height * width;
        int[] pixels = new int[pixelCount];
        bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0, width, height);

        int redBucket = 0;
        int greenBucket = 0;
        int blueBucket = 0;

        for (int y = 0; y < height; y++)
        {
            for (int x = 0; x < width; x++)
            {
                int color = pixels[x + y * width];
                redBucket += (color >> 16) & 0xFF; // Color.red
                greenBucket += (color >> 8) & 0xFF; // Color.greed
                blueBucket += (color & 0xFF); // Color.blue
                // does alpha matter?
            }
        }
        String color = String.format("#FF%02x%02x%02x",
                redBucket / pixelCount, greenBucket /pixelCount, blueBucket/pixelCount); //gets the average color in hex form
        setStatusBarColor(findViewById(R.id.statusBarBackground), color);
    }


    public void setStatusBarColor(View statusBar,String color){

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
           Window w = getWindow();
    w.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    w.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

            w.setStatusBarColor(Color.parseColor(color));
        } else{
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            Window w =  activity.getWindow();
            w.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            //status bar height
            statusBar.getLayoutParams().height = getStatusBarHeight();
            statusBar.setBackgroundColor(Color.parseColor(color));
        }
    }


    }

    public int getStatusBarHeight() {
        int result = 0;
        int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            result = getResources().getDimensionPixelSize(resourceId);
        }
        return result;
    }

将此视图添加到要更改其状态栏的每个活动的 xml 布局中，这是针对棒棒糖之前的设备：

<View
        android:id="@+id/statusBarBackground"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        />

当然这不是唯一一个获取图像平均颜色的计算，但我选择它是因为它简单易懂，它不包括 alpha 值，如果需要检查可以添加一个 alpha 桶每个像素的透明度。 希望这会有所帮助。

编辑： 还在 sdk 5.1 上尝试过，效果很好:)

Answer 5

对于您的情况，您需要在 ViewPagerAdapter 类中进行一些更改，这适用于 5.0 sdk 及更高版本：

将此添加到类中：

 String colorArray[]={"ffccff"//color for fragment1,
"#ffffeeff"//color for fragment2,
"#ffeeffee" //color for fragment3,
"#ffeebbcc"//color for fragment4,
"#ffeebbcc" //color for fragment5};

//这里将每个片段的所有颜色以十六进制格式（按顺序）。 //此数组必须与您拥有的片段数相同

改变这个方法

@Override
    public void onDrawerItemSelected(View view, int position) {
        displayView(position);
    setStatusBarColor(colorArray[position]); //added this line, this will change the status bar depending on the selected fragment
    }

在 ViewpagerAdapter 类的最后添加这段代码：

public void setStatusBarColor(String color){

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
        Window w = getWindow();
        w.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        w.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            w.setStatusBarColor(Color.parseColor(color));
        }
    }

Answer 6

如果您想更改Toolbar 和StatusBar 的颜色，以下步骤会帮助您：

1- 将addOnPageChangeListener 添加到您的 ViewPager。

2- 在onPageScrolled 打电话updateBackground

viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                // define two variable in your activity/fragment
                // call them position & positionOffset
                IntroActivity.this.position = (int) Math.floor(position + positionOffset);
                IntroActivity.this.positionOffset = (((position + positionOffset) % 1) + 1) % 1;
                updateBackground();
            }

            @Override
            public void onPageSelected(int position) {

            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });

3- updateBackground 就像下面的一样

 private static final int COLOR_PRIMARY[] = {R.color.green_primary, R.color.purple_primary, R.color.red_primary};
 private static final int COLOR_PRIMARY_DARK[] = {R.color.green_primary_dark, R.color.purple_primary_dark, R.color.red_primary_dark};

private void updateBackground() {
        @ColorInt
        int background;
        @ColorInt
        int backgroundNext;
        @ColorInt
        int backgroundDark;
        @ColorInt
        int backgroundDarkNext;

        if (position == adapter.getCount()) {
            background = Color.TRANSPARENT;
            backgroundNext = Color.TRANSPARENT;
            backgroundDark = Color.TRANSPARENT;
            backgroundDarkNext = Color.TRANSPARENT;
        } else {
            background = ContextCompat.getColor(IntroActivity.this,
                    color[(position)]);
            backgroundNext = ContextCompat.getColor(IntroActivity.this,
                    color[(Math.min(position + 1, adapter.getCount() - 1))]);

            background = ColorUtils.setAlphaComponent(background, 0xFF);
            backgroundNext = ColorUtils.setAlphaComponent(backgroundNext, 0xFF);

            try {
                backgroundDark = ContextCompat.getColor(IntroActivity.this,
                        color_darks[(position)]);
            } catch (Resources.NotFoundException e) {
                backgroundDark = ContextCompat.getColor(IntroActivity.this,
                        R.color.mi_status_bar_background);
            }
            try {
                backgroundDarkNext = ContextCompat.getColor(IntroActivity.this,
                        color_darks[(Math.min(position + 1, adapter.getCount() - 1))]);
            } catch (Resources.NotFoundException e) {
                backgroundDarkNext = ContextCompat.getColor(IntroActivity.this,
                        R.color.mi_status_bar_background);
            }
        }

        if (position + positionOffset >= adapter.getCount() - 1) {
            backgroundNext = ColorUtils.setAlphaComponent(background, 0x00);
            backgroundDarkNext = ColorUtils.setAlphaComponent(backgroundDark, 0x00);
        }

        background = (Integer) evaluator.evaluate(positionOffset, background, backgroundNext);
        backgroundDark = (Integer) evaluator.evaluate(positionOffset, backgroundDark, backgroundDarkNext);

        toolbar.setBackgroundColor(background);

        float[] backgroundDarkHsv = new float[3];
        Color.colorToHSV(backgroundDark, backgroundDarkHsv);
        //Slightly darken the background color a bit for more contrast
        backgroundDarkHsv[2] *= 0.95;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            getWindow().setStatusBarColor(backgroundDark);

            if (position == adapter.getCount()) {
                getWindow().setNavigationBarColor(Color.TRANSPARENT);
            } else if (position + positionOffset >= adapter.getCount() - 1) {
                TypedValue typedValue = new TypedValue();
                TypedArray a = obtainStyledAttributes(typedValue.data, new int[]{android.R.attr.navigationBarColor});

                int defaultNavigationBarColor = a.getColor(0, Color.BLACK);

                a.recycle();

                int navigationBarColor = (Integer) evaluator.evaluate(positionOffset, defaultNavigationBarColor, Color.TRANSPARENT);
                getWindow().setNavigationBarColor(navigationBarColor);
            }

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                int systemUiVisibility = getWindow().getDecorView().getSystemUiVisibility();
                int flagLightStatusBar = View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
                if (ColorUtils.calculateLuminance(backgroundDark) > 0.4) {
                    //Light background
                    systemUiVisibility |= flagLightStatusBar;
                } else {
                    //Dark background
                    systemUiVisibility &= ~flagLightStatusBar;
                }
                getWindow().getDecorView().setSystemUiVisibility(systemUiVisibility);
            }
        }
    }

现在你有这样的东西：

4- 只剩下一步，在 updateBackground 中，而不是 COLOR_PRIMARY 和 COLOR_PRIMARY_DARK，使用 Pallete 来获取图像的颜色。