Android如何自定义ToolBar和实现沉浸式

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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"?>

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

2）、在布局中使用

...

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

Android如何自定义ToolBar和实现沉浸式

注意：

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

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。

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