前言

  ToolBar是Android 5.0推出的一个新的导航控件用于取代之前的ActionBar，由于其高度的可定制性、灵活性、具有Material Design风格等优点，越来越多的App也用上了ToolBar。

  沉浸式状态栏是从android Kitkat（Android 4.4）开始出现的,它可以被设置成与APP顶部相同的颜色，这就使得切换APP时，整个界面就好似切换到了与APP相同的风格样式一样。

依赖包：
  Toolbar, implementation 'androidx.appcompat:appcompat:1.1.0'

  沉浸式, implementation 'com.gyf.immersionbar:immersionbar:3.0.0'

1、自定义Toolbar步骤：

1）、定义 /values/styles.xml

<?xml version="1.0" encoding="utf-8"?><resources> <style name="TextAppearance_TitleBar_Title" parent="TextAppearance.AppCompat.Toolbar.Title"> ... </style> <style name="TextAppearance_TitleBar_subTitle" parent="TextAppearance.AppCompat.Toolbar.Subtitle"> .... </style></resources>

2）、自定义toolbar 继承 androidx.appcompat.widget.Toolbar

public class CustomToolBar extends Toolbar { private TextView mCenterTitle; private ImageView mCenterIcon; //中心icon private TextView mLeftText; private ImageButton mLeftIcon; private TextView mSettingText; private ImageButton mSettingIcon; public CustomToolBar(Context context) { super(context); } public CustomToolBar(Context context, AttributeSet attrs) { super(context, attrs); } public CustomToolBar(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public void setLeftText(@StringRes int id) { setLeftText(this.getContext().getText(id)); } public CustomToolBar setLeftText(CharSequence text) { Context context = this.getContext(); if (this.mLeftText == null) { this.mLeftText = new TextView(context); this.mLeftText.setGravity(Gravity.CENTER_VERTICAL); this.mLeftText.setSingleLine();// this.mLeftText.setEllipsize(TextUtils.TruncateAt.END); setLeftTextAppearance(getContext(), R.style.TextAppearance_TitleBar_subTitle); //textView in left// this.addMyView(this.mLeftText, Gravity.START); int i = dp2px(this, 16); this.addMyView(this.mLeftText, Gravity.START, 0, 0, i, 0, 48); } mLeftText.setText(text); return this; } public void setLeftTextAppearance(Context context, @StyleRes int resId) { if (this.mLeftText != null) { this.mLeftText.setTextAppearance(context, resId); } } public void setLeftTextColor(@ColorInt int color) { if (this.mLeftText != null) { this.mLeftText.setTextColor(color); } } public void setLeftTextOnClickListener(OnClickListener listener) { if (mLeftText != null) { mLeftText.setOnClickListener(listener); } } public CustomToolBar setLeftIcon(@DrawableRes int resId) { return setLeftIcon(ContextCompat.getDrawable(this.getContext(), resId)); } @TargetApi(Build.VERSION_CODES.JELLY_BEAN) public CustomToolBar setLeftIcon(Drawable drawable) { Context context = this.getContext(); if (this.mLeftIcon == null) { this.mLeftIcon = new ImageButton(context); ... this.addMyView(this.mLeftIcon, Gravity.START); } else { if (mLeftIcon.getVisibility() != VISIBLE) { mLeftIcon.setVisibility(VISIBLE); } } if (mLeftText != null && mLeftText.getVisibility() != GONE) { mLeftText.setVisibility(GONE); } mLeftIcon.setImageDrawable(drawable); return this; } public void setLeftIconOnClickListener(OnClickListener listener) { if (mLeftIcon != null) { mLeftIcon.setOnClickListener(listener); } } public void setLeftIconVisibility(int visibility) { if (mLeftIcon != null) { mLeftIcon.setVisibility(visibility); } } public CustomToolBar setMyCenterTitle(@StringRes int id, boolean center) { return setMyCenterTitle(this.getContext().getText(id), center); } public void setMyCenterTitle(@StringRes int Rid) { setMyCenterTitle(this.getContext().getText(Rid)); } public void setMyCenterTitle(CharSequence text) { Context context = this.getContext(); if (this.mCenterTitle == null) { this.mCenterTitle = new TextView(context); ... } else { if (this.mCenterTitle.getVisibility() != VISIBLE) { mCenterTitle.setVisibility(VISIBLE); } } if (mCenterIcon != null && mCenterIcon.getVisibility() != GONE) { mCenterIcon.setVisibility(GONE); } ... } public CustomToolBar setMyCenterTitle(CharSequence text, boolean center) { Context context = this.getContext(); if (this.mCenterTitle == null) { this.mCenterTitle = new TextView(context); ... } else { if (this.mCenterTitle.getVisibility() != VISIBLE) { mCenterTitle.setVisibility(VISIBLE); } } if (mCenterIcon != null && mCenterIcon.getVisibility() != GONE) { mCenterIcon.setVisibility(GONE); } if (!center) { setTitle(text); setTitleTextColor(getResources().getColor(R.color.black)); } else { mCenterTitle.setText(text); mCenterTitle.setTextColor(getResources().getColor(R.color.black)); mCenterTitle.setTextSize(16); } return this; } public void setMyCenterTextAppearance(Context context, @StyleRes int resId) { if (this.mCenterTitle != null) { this.mCenterTitle.setTextAppearance(context, resId); } } public void setMyCenterTextColor(@ColorInt int color) { if (this.mCenterTitle != null) { this.mCenterTitle.setTextColor(color); } } public void setMyCenterTextOnClickListener(OnClickListener listener) { if (mCenterTitle != null) { mCenterTitle.setOnClickListener(listener); } } public void setMyCenterIcon(@DrawableRes int resId) { setMyCenterIcon(ContextCompat.getDrawable(this.getContext(), resId)); } public void setMyCenterIcon(Drawable drawable) { Context context = this.getContext(); if (this.mCenterIcon == null) { ... } else { if (mCenterIcon.getVisibility() != VISIBLE) { mCenterIcon.setVisibility(VISIBLE); } } if (mCenterTitle != null && mCenterTitle.getVisibility() != GONE) { mCenterTitle.setVisibility(GONE); } setTitle(""); mCenterIcon.setImageDrawable(drawable); } public void setMySettingText(@StringRes int Rid) { setMySettingText(this.getContext().getText(Rid)); } public void setMySettingText(CharSequence text) { Context context = this.getContext(); if (this.mSettingText == null) { ... } else { if (mSettingText.getVisibility() != VISIBLE) { mSettingText.setVisibility(VISIBLE); } } if (mSettingIcon != null && mSettingIcon.getVisibility() != GONE) { mSettingIcon.setVisibility(GONE); } mSettingText.setText(text); mSettingText.setTextSize(14); mSettingText.setTextColor(getResources().getColor(R.color.toolbar_title)); } public void setMySettingTextAppearance(Context context, @StyleRes int resId) { if (mSettingText != null) { mSettingText.setTextAppearance(context, resId); } } public void setMySettingTextColor(@ColorInt int color) { if (mSettingText != null) { mSettingText.setTextColor(color); } } public void setSettingTextOnClickListener(OnClickListener listener) { if (mSettingText != null) { mSettingText.setOnClickListener(listener); } } public CustomToolBar setMySettingIcon(@DrawableRes int resId) { return setMySettingIcon(ContextCompat.getDrawable(this.getContext(), resId));// ViewConfiguration.get(this.getContext()).getScaledTouchSlop(); } @TargetApi(Build.VERSION_CODES.JELLY_BEAN) public CustomToolBar setMySettingIcon(Drawable drawable) { Context context = this.getContext(); if (this.mSettingIcon == null) { ... } else { if (mSettingIcon.getVisibility() != VISIBLE) { mSettingIcon.setVisibility(VISIBLE); } } if (mSettingText != null && mSettingText.getVisibility() != GONE) { mSettingText.setVisibility(GONE); } mSettingIcon.setImageDrawable(drawable); return this; } public void setSettingIconOnClickListener(OnClickListener listener) { if (mSettingIcon != null) { mSettingIcon.setOnClickListener(listener); } } private void addSimpleView(View v, int gravity) { addSimpleView(v, gravity, 0, 0, 0, 0); } private void addSimpleView(View v, int gravity, int left, int top, int right, int bottom) { LayoutParams lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, gravity); lp.setMargins(left, top, right, bottom); this.addView(v, lp); } private void addMyView(View v, int gravity) { addMyView(v, gravity, 0, 0, dp2px(this, 16), 0); } private void addMyView(View v, int gravity, int left, int top, int right, int bottom) { LayoutParams lp = new LayoutParams(dp2px(this, 20), dp2px(this, 20), gravity); lp.setMargins(left, top, right, bottom); this.addView(v, lp); } private void addMyView(View v, int gravity, int left, int top, int right, int bottom, int width) { LayoutParams lp = new LayoutParams(dp2px(this, width), 20, gravity); lp.setMargins(left, top, right, bottom); this.addView(v, lp); } public CustomToolBar setCenterTitleWithImg(CharSequence text, Drawable drawable, boolean center) { Context context = this.getContext(); if (this.mCenterTitle == null) { this.mCenterTitle = new TextView(context); ... if (this.mCenterTitle.getVisibility() != VISIBLE) { mCenterTitle.setVisibility(VISIBLE); } } if (this.mCenterIcon == null) { this.mCenterIcon = new ImageView(context); ... } else { if (mCenterIcon.getVisibility() != VISIBLE) { mCenterIcon.setVisibility(VISIBLE); } } mCenterTitle.setTextSize(18); mCenterTitle.setTextColor(getResources().getColor(R.color.black)); mCenterTitle.setText(text); mCenterIcon.setImageDrawable(drawable); return this; } public void setCenterTitleWithImgOnClickListener(OnClickListener listener) { if (mCenterTitle != null) { ((View) mCenterTitle.getParent()).setOnClickListener(listener); } }}

2、自定义Toolbar使用

1）、res/layout创建布局文件

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="wrap_content"> <com.ktx.view.CustomToolBar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?actionBarSize" android:background="@android:color/white" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" app:titleTextColor="@android:color/black" /></FrameLayout>

2）、在布局中使用

<?xml version="1.0" encoding="utf-8"?><layout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:binding="http://schemas.android.com/tools"> <data> <variable name="viewModel" type="com.android.playandroid.viewmodel.LoginViewModel" /> </data> <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/bkg" android:orientation="vertical"> <include layout="@layout/title_layout" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toTopOf="parent" /> ... </androidx.constraintlayout.widget.ConstraintLayout></layout>

3）、代码中使用

a、初始化：

mBinding.root.toolbar.setNavigationIcon(R.mipmap.register_close) mBinding.root.toolbar.setMyCenterTitle(getString(R.string.register), true) mBinding.root.toolbar.setMySettingText(getString(R.string.login))

b、点击事件：

mBinding.root.toolbar.setNavigationOnClickListener { .... } mBinding.root.toolbar.setSettingTextOnClickListener { ...}

4）、沉浸式，设置toolbar背景颜色、文字颜色，一般写在基类

protected open fun initImmersionBar() { //在BaseActivity里初始化 mImmersionBar = ImmersionBar.with(this) if (toolbar != null) { mImmersionBar.titleBar(toolbar) } mImmersionBar.statusBarDarkFont(true) // mImmersionBar.keyboardEnable(true).navigationBarWithKitkatEnable(false).init() // mImmersionBar.init() ImmersionBar.with(this).init() }

Google原生的效果，不必多说，可以实现类似这样的效果

注意：

1、配置整个app的toolbar风格，在/value/styles.xml文件修改代码

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"> <item name="colorPrimary">@android:color/white</item> <item name="colorPrimaryDark">@android:color/white</item> <item name="colorAccent">@android:color/white</item> ... </style>

2、修改了 toolbar的高度 ，怎么让navigationIcon显示在toolbar中心?

  只要设置如下，即可：android:minHeight="@dimen/toolbar_height"

3、toolbar布局文件位置

  如果在commonlibrary目录创建该文件，在app 下还需要复制一份，因为在app 使用toolbar，kotlin-android-extensions引用不到commonlibrary目录下的布局文件。

代码Github：https://github.com/AlbertShen0211/PlayAndroid

总结

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