由于项目中经常用到此种组合控件,就封装了下,具体效果看下图,老司机可以绕道哈!

Image.png

一、主要功能

  • 支持左右图标动态设置
  • 支持左右、中间文字动态修改
  • 支持字体大小、颜色修改
  • 支持左右图标,左中右文字隐藏显示
  • 支持左右图标和文案的点击监听

二、基本使用方式

<com.example.android.customvView.CustomNavigatorBar
        android:id="@+id/customView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:leftImage="@drawable/leftarrow"
        app:rightImage="@drawable/rightarrow"
        app:leftImageVisiable="true"
        app:rightImageVisible="true"
        app:leftText="左边"
        app:rightText="右边"
        app:midText="标题"
        app:midTextFontColor="#ffffff"
        app:leftTextColor="#ffffff"
        app:rightTextColor="@color/colorAccent"
        app:titleBarBackground="@color/colorPrimary"
        app:midTextFontSize="18px"
        app:leftTextVisibale="true"
        app:rightTextVisible="true"
        app:leftTextFontSize="16px"
        app:rightTextFontSize="16px"
        />

三、基本属性介绍

属性名 属性说明 属性值
titleBarBackground 标题栏背景色 color,reference,默认为white
leftImage 左边图片 reference
leftImageVisiable 左边图片是否可见 boolean,默认为true,显示控件
leftText 左边文案 string,reference
leftTextVisibale 左边文案是否可见 boolean,默认为true,显示控件
leftTextFontSize 左边文案字体大小 dimension,reference,默认为16sp
leftTextColor 左边文案字体颜色 color,reference
midText 中间文案 string,reference
midTextVisiable 中间文案是否可见 boolean,默认为true,显示控件
midTextFontSize 中间文案字体大小 dimension,reference,默认为18sp
midTextFontColor 中间文案字体颜色 color,reference
rightText 右边文案 color,reference
rightTextVisible 右边文案是否可见 boolean,默认为true,显示控件
rightTextFontSize 右边文案字体大小 dimension,reference,默认为16sp
rightTextColor 右边文案字体颜色 color,reference
rightImage 右边图片 reference
rightImageVisible 右边图片是否可见 boolean,默认为true,显示控件

四、组合控件类

package com.example.android.customvView;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.example.android.R;

/**
 * Created by WangLu on 2016/12/6.
 * E-mail:[email protected]
 */

public class CustomNavigatorBar extends RelativeLayout implements View.OnClickListener {

    private ImageView leftImage;
    private TextView leftText;
    private TextView midText;
    private ImageView rightImage;
    private TextView rightText;
    private OnCustomClickListener customClickListener ;

    public CustomNavigatorBar(Context context) {
        this(context,null);
    }

    public CustomNavigatorBar(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }

    public CustomNavigatorBar(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        iniView(context);
        /**
         * 两种初始化的不通,请看下面注释讲解
         */
        initOneType(context, attrs);//第一种初始化
//        initTwoType(context, attrs);//第二种初始化
    }

    private void iniView(Context context) {
        View view = LayoutInflater.from(context).inflate(R.layout.custom_title_bar, this, true);
        leftImage = (ImageView) view.findViewById(R.id.left_image);
        leftText = (TextView) view.findViewById(R.id.left_text);
        midText = (TextView) view.findViewById(R.id.mid_text);
        rightText = (TextView) view.findViewById(R.id.right_text);
        rightImage = (ImageView) view.findViewById(R.id.right_image);

    }

    /**
     * 有兴趣的请参考鸿洋大神的自定义讲解
     *
     * 初始化属性值:这种写法,不管你在布局中有没有使用该属性,都会执行getXXX方法赋值
     *假设一个场景:
     *    private int attr_mode = 1;//默认为1
     *   //然后你在写getXXX方法的时候,是这么写的:
     *   attr_mode = array.getInt(i, 0);
     *
     *   可能你的自定义属性有个默认的值,然后你在写赋值的时候,一看是整形,就默默的第二个参数就给了个0,
     *   然而用户根本没有在布局文件里面设置这个属性,你却在运行时将其变为了0(而不是默认值),而第二种就不存在这个问题。
     *   当然这个场景可以由规范的书写代码的方式来避免,(把默认值提取出来,都设置对就好了)。
     *
     * 场景二:
     *
     *   其实还有个场景,假设你是继承自某个View,父类的View已经对该成员变量进行赋值了,然后你这边需要根据用户的设置情况,
     *   去更新这个值,第一种写法,如果用户根本没有设置,你可能就将父类的赋值给覆盖了。
     *
     * @param context
     * @param attrs
     */
    private void initTwoType(Context context, AttributeSet attrs) {
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomNavigatorBar);
        if (null != typedArray) {
            Drawable leftDrawable = typedArray.getDrawable(R.styleable.CustomNavigatorBar_leftImage);
            leftImage.setImageDrawable(leftDrawable);

            boolean leftImageVisible = typedArray.getBoolean(R.styleable.CustomNavigatorBar_leftImageVisiable, false);
            if (leftImageVisible) {
                leftImage.setVisibility(View.VISIBLE);
            } else {
                leftImage.setVisibility(View.GONE);
            }

            typedArray.recycle();
        }
    }

    /**注:如果switch报错,请改为if-else
     * 初始化属性值:这种写法,只有在布局中设置了该属性值后,才会调用getXXX()方法赋值
     * @param context
     * @param attrs
     */
    private void initOneType(Context context, AttributeSet attrs) {
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomNavigatorBar);
        int totalAttributes = typedArray.getIndexCount();
        for (int i = 0 ; i<totalAttributes ;i++) {
            int index = typedArray.getIndex(i);
            switch (index) {
                case R.styleable.CustomNavigatorBar_leftImage:
                    leftImage.setImageDrawable(typedArray.getDrawable(index));
                    break ;
                case R.styleable.CustomNavigatorBar_leftImageVisiable:
                    getVisible(typedArray,leftImage,index);
                    break ;
                case R.styleable.CustomNavigatorBar_leftText:
                    leftText.setText(typedArray.getString(index));
                    break ;
                case R.styleable.CustomNavigatorBar_leftTextFontSize:
                    leftText.setTextSize(typedArray.getDimensionPixelSize(index, (int) sp2px(context,16)));
                    break ;
                case R.styleable.CustomNavigatorBar_leftTextColor:
                    leftText.setTextColor(typedArray.getColor(index, Color.WHITE));
                    break ;
                case R.styleable.CustomNavigatorBar_leftTextVisibale:
                    getVisible(typedArray,leftText,index);
                    break ;
                case R.styleable.CustomNavigatorBar_midText:
                    midText.setText(typedArray.getString(index));
                    break ;
                case R.styleable.CustomNavigatorBar_midTextVisiable:
                    getVisible(typedArray,midText,index);
                    break ;
                case R.styleable.CustomNavigatorBar_midTextFontSize:
                    midText.setTextSize(typedArray.getDimensionPixelSize(index,(int) sp2px(context,18)));
                    break ;
                case R.styleable.CustomNavigatorBar_midTextFontColor:
                    midText.setTextColor(typedArray.getColor(index,Color.WHITE));
                case R.styleable.CustomNavigatorBar_rightImage:
                    rightImage.setImageDrawable(typedArray.getDrawable(index));
                    break ;
                case R.styleable.CustomNavigatorBar_rightImageVisible:
                    getVisible(typedArray,rightImage,index);
                    break ;
                case R.styleable.CustomNavigatorBar_rightText:
                    rightText.setText(typedArray.getString(index));
                    break ;
                case R.styleable.CustomNavigatorBar_rightTextFontSize:
                    rightText.setTextSize(typedArray.getDimensionPixelSize(index,(int) sp2px(context,16)));
                    break ;
                case R.styleable.CustomNavigatorBar_rightTextColor:
                    rightText.setTextColor(typedArray.getColor(index, Color.WHITE));
                    break ;
                case R.styleable.CustomNavigatorBar_rightTextVisible:
                    getVisible(typedArray,rightText,index);
                    break ;
                case R.styleable.CustomNavigatorBar_titleBarBackground:
                    int titleBarBackgroundColor = typedArray.getColor(index, Color.GREEN);
                    setBackgroundColor(titleBarBackgroundColor);
                    break ;
            }
        }
        typedArray.recycle();
    }

    /**
     * 用来隐藏显示View,只有gone 和 visible两种情况,因为inVisible感到在这里用不到,就没有封装
     * @param typedArray
     * @param view
     * @param index
     */
    private void getVisible(TypedArray typedArray ,View view,int index) {
        boolean visible = typedArray.getBoolean(index, false);
        if (visible) {
            view.setVisibility(View.VISIBLE);
        } else {
            view.setVisibility(View.GONE);
        }
    }

    private void setVisible(View view ,boolean visible) {
        if (visible) {
            view.setVisibility(View.VISIBLE);
        } else {
            view.setVisibility(View.GONE);
        }
    }

    /**
     * 两种监听只能使用其中一种,不能同时使用
     *
     * ----------------------------第一种点击监听开始处----------------------------------------
     * @param clickListener
     */
    public void setLeftImageOnClickListener(View.OnClickListener clickListener) {
        if (null != clickListener) {
            leftImage.setOnClickListener(clickListener);
        }
    }

    public void setLeftTextOnClickListener(View.OnClickListener clickListener) {
        if (null != clickListener) {
            leftText.setOnClickListener(clickListener);
        }
    }
    public void setRightImageOnClickListener(View.OnClickListener clickListener) {
        if (null != clickListener) {
            rightImage.setOnClickListener(clickListener);
        }
    }

    public void setRightTextOnClickListener(View.OnClickListener clickListener) {
        if (null != clickListener) {
            rightText.setOnClickListener(clickListener);
        }
    }

    /**
     * ----------------------------第二种点击监听开始处----------------------------------------
     * @return
     */
    public void addViewClickListener(OnCustomClickListener listener) {
        leftText.setOnClickListener(this);
        leftImage.setOnClickListener(this);
        rightImage.setOnClickListener(this);
        rightText.setOnClickListener(this);
        this.customClickListener = listener ;
    }

    public interface OnCustomClickListener{
        void onClickListener(View rootView);
    }

    @Override
    public void onClick(View view) {
        customClickListener.onClickListener(view);
    }

    /**
     * ----------------------------第二种点击监听结束处----------------------------------------
     * @return
     */

    public ImageView getLeftImageView(){
        return leftImage;
    }
    public ImageView getRightImage(){
        return rightImage;
    }

    public TextView getLeftText(){
        return leftText;
    }

    public TextView getRightText(){
        return rightText;
    }

    public TextView getMidText(){
        return midText;
    }

    /**
     * 设置textView的标题内容
     * @param textDescribe
     */
    public void setLeftText(String textDescribe) {
        if (null != textDescribe) {
            leftText.setText(textDescribe);
        }
    }
    public void setMidText(String textDescribe) {
        if (null != textDescribe) {
            midText.setText(textDescribe);
        }
    }

    public void setRightText(String textDescribe) {
        if (null != textDescribe) {
            rightText.setText(textDescribe);
        }
    }

    /**
     * 设置textView的字体颜色
     * @param textColor
     */
    public void setLeftTextColor(int textColor) {
        leftText.setTextColor(textColor);
    }
    public void setMidTextColor(int textColor) {
        midText.setText(textColor);
    }

    public void setRightTextColor(int textColor) {
        rightText.setText(textColor);
    }

    /**
     * 设置title栏背景色
     * @param color
     */
    public void setTitleBarBackground(int color) {
        setBackgroundColor(color);
    }

    /**
     * 左右控件的隐藏显示
     * @param visible
     */
    public void setLeftImageVisible(boolean visible) {
        setVisible(leftImage, visible);
    }
    public void setLeftTextVisible(boolean visible) {
        setVisible(leftText, visible);
    }
    public void setRifhtImageVisible(boolean visible) {
        setVisible(rightImage, visible);
    }
    public void setRightTextVisible(boolean visible) {
        setVisible(rightText, visible);
    }


    private float sp2px(Context context, float defaultVal) {
        float applyDimension = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, defaultVal, context.getResources().getDisplayMetrics());
        return applyDimension ;
    }

    private float dp2px(Context context, float defaultVal) {
        float applyDimension = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, defaultVal, context.getResources().getDisplayMetrics());
        return applyDimension ;
    }

    private float dp2px(Context context, int defultVal) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (float) (defultVal*scale + 0.5);
    }

}

五、attrs.xml

<?xml version="1.0" encoding="utf-8" ?>
<resources>
    <declare-styleable name = "CustomNavigatorBar">
        <attr name="titleBarBackground" format="reference|color" />
        <attr name="leftImage" format="reference" />
        <attr name="leftImageVisiable" format="boolean" />
        <attr name="leftText" format="string|reference" />
        <attr name="leftTextVisibale" format="boolean" />
        <attr name="leftTextFontSize" format="dimension|reference" />
        <attr name="leftTextColor" format="color|reference" />
        <attr name="midText" format="string|reference" />
        <attr name="midTextVisiable" format="boolean" />
        <attr name="midTextFontSize" format="dimension|reference" />
        <attr name="midTextFontColor" format="color|reference" />
        <attr name="rightText" format="string|reference" />
        <attr name="rightTextVisible" format="boolean" />
        <attr name="rightTextFontSize" format="dimension|reference" />
        <attr name="rightTextColor" format="color|reference" />
        <attr name="rightImage" format="reference" />
        <attr name="rightImageVisible" format="boolean" />
    </declare-styleable>
</resources>

六、组合控件布局(custom_title_bar.xml)

为什么使用merge,因为组合控件已经extends RelativeLayout,如果根布局还是用viewGroup的话,会使布局重复嵌套,影响View的绘制性能;
<?xml version = "1.0" encoding = "utf-8" ?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">

    <ImageView
        android:id="@+id/left_image"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_centerVertical="true"
        android:minHeight="20dp"
        android:minWidth="20dp"
        android:layout_marginLeft="10dp"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/left_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_marginLeft="5dp"
        android:layout_toRightOf="@+id/left_image"
        android:gravity="center"
        android:minHeight="45dp"
        android:text="left" />

    <TextView
        android:id="@+id/mid_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:gravity="center"
        android:minHeight="45dp"
        android:text="mid"
        android:textSize="17sp" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:gravity="center"
        android:minHeight="45dp"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/right_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="5dp"
            android:layout_toLeftOf="@+id/right_image"
            android:gravity="center"
            android:minHeight="45dp"
            android:text="right" />

        <ImageView
            android:id="@+id/right_image"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:minHeight="20dp"
            android:minWidth="20dp"
            android:src="@drawable/ic_launcher" />
    </LinearLayout>
</merge>

七、具体使用

CustomNavigatorBar customNavigatorBar = (CustomNavigatorBar) findViewById(R.id.customView);
        /**
         * 第一种监听的具体实现
         */
        customNavigatorBar.setLeftImageOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this,"left",Toast.LENGTH_SHORT).show();
            }
        });

        /**
         * 第二种监听的具体实现
         */
        customNavigatorBar.addViewClickListener(new CustomNavigatorBar.OnCustomClickListener() {
            @Override
            public void onClickListener(View rootView) {
                switch (rootView.getId()) {
                    case R.id.right_image:
                        Toast.makeText(MainActivity.this,"right_image is clicked",Toast.LENGTH_SHORT).show();
                        break ;
                    case R.id.left_image:
                        Toast.makeText(MainActivity.this,"left_image is clicked",Toast.LENGTH_SHORT).show();
                        break ;
                }
            }
        });

 

 

来自:http://www.jianshu.com/p/b693d5ca29fd