自定义标题返回

Posted 2021-06-08 天耀106

第一节：自定义TitleView

import android.app.Activity
import android.content.Context
import android.graphics.Color
import android.util.AttributeSet
import android.view.LayoutInflater
import android.view.View
import android.widget.ImageView
import android.widget.RelativeLayout
import android.widget.TextView
import androidx.core.content.ContextCompat
import com.tian.yao.R
import androidx.databinding.BindingAdapter

class TitleView(context: Context, attrs: AttributeSet?) : RelativeLayout(context, attrs) {

    var textView: TextView
    private var tvRight: TextView
    var ivArrow: ImageView

    init {
        LayoutInflater.from(context).inflate(R.layout.layout_title, this, true)
        val mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.TitleView)
        val title = mTypedArray.getString(R.styleable.TitleView_titleText)
        val textRight = mTypedArray.getString(R.styleable.TitleView_rightText)
        val arrowColorTint = mTypedArray.getColor(R.styleable.TitleView_arrowColor, Color.parseColor("#595959"))
        val textColor = mTypedArray.getColor(R.styleable.TitleView_titleColor, ContextCompat.getColor(context, R.color.color_171921))
        val textRightColor = mTypedArray.getColor(R.styleable.TitleView_rightColor, ContextCompat.getColor(context, R.color.color_FFFA2614))
        textView = findViewById(R.id.tv_title)
        textView.setTextColor(textColor)
        tvRight = findViewById(R.id.tv_right)
        tvRight.setTextColor(textRightColor)
        ivArrow = findViewById(R.id.iv_back)
        ivArrow.setColorFilter(arrowColorTint)
        ivArrow.setOnClickListener {
            if (context is Activity) {
                context.finish()
            }
        }
        textView.text = title
        tvRight.text = textRight
        mTypedArray.recycle()
    }

    fun setText(title: String) {
        textView.text = title
    }

    fun getText(): String {
        return textView.text.toString()
    }

    fun setRightText(right: String) {
        tvRight.text = right
    }

    fun setRightTextColor(color: Int) {
        tvRight.setTextColor(color)
    }

    fun setIvArrowListener(l: (View) -> Unit) {
        ivArrow.setOnClickListener(l)
    }

    fun setRightListener(l: (View) -> Unit) {
        tvRight.setOnClickListener(l)
    }

    fun setRightEnable(enabled: Boolean) {
        tvRight.isEnabled = enabled
    }

    companion object {
        @JvmStatic
        @BindingAdapter("onRightClick")
        fun onRightClick(titleView: TitleView, onClickListener: OnClickListener) {
            titleView.tvRight.setOnClickListener(onClickListener)
        }
    }
}

 布局文件 layout_title：

<?xml version="1.0" encoding="utf-8"?>
<merge 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="?actionBarSize"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/iv_back"
        android:layout_width="50dp"
        android:layout_height="?actionBarSize"
        android:layout_gravity="center"
        android:background="?attr/selectableItemBackground"
        android:scaleType="centerInside"
        app:srcCompat="@drawable/svg_back" />

    <TextView
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_toEndOf="@id/iv_back"
        android:gravity="center"
        android:textColor="#171921"
        android:textSize="19sp" />

    <TextView
        android:id="@+id/tv_right"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_centerVertical="true"
        android:paddingEnd="20dp"
        android:paddingStart="10dp"
        android:gravity="center"
        android:textColor="#3C3C3C"
        android:textSize="16sp" />
</merge>

布局引用：

 

<?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:tools="http://schemas.android.com/tools">
    <data>

        <variable
            name="listener"
            type="com.tian.yao.sectionone.SearchAction" />
    </data>
    
    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">
    
        <com.tian.yao.sectionone.TitleView
            android:id="@+id/titleView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:adjustViewBounds="true"
            android:scaleType="centerInside"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:onRightClick="@{v->listener.inquiry()}"
            app:rightText="查询"
            app:tint="#999999"
            app:titleText="" />
    
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>

定义接口：

interface SearchAction  {
    fun inquiry()
}

主布局调用：

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Toast
import com.tian.yao.sectionone.TitleView

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        findViewById<TitleView>(R.id.titleView).setRightListener { Toast.makeText(this,"查询",Toast.LENGTH_SHORT).show() }
    }
}

启用dataBinding，在app/build.gradle的android目录下：

buildFeatures {
    dataBinding true
}

 插件引用配合BindingAdapter

plugins {
    id 'com.android.application'
    id 'kotlin-android'
    id 'kotlin-kapt'
}

 定义颜色值：

<color name="color_171921">#171921</color>
<color name="color_FFFA2614">#FFFA2614</color>

代码链接：

链接: https://pan.baidu.com/s/1aqpcuhVgIkCr2rfnDV_6ng 提取码: rrea 复制这段内容后打开百度网盘手机App，操作更方便哦