由于項(xiàng)目中經(jīng)常用到此種組合控件,就封裝了下，具體效果看下圖，老司機(jī)可以繞道哈！

Image.png

一、主要功能

• 支持左右圖標(biāo)動(dòng)態(tài)設(shè)置
• 支持左右、中間文字動(dòng)態(tài)修改
• 支持字體大小、顏色修改
• 支持左右圖標(biāo)，左中右文字隱藏顯示
• 支持左右圖標(biāo)和文案的點(diǎn)擊監(jiān)聽(tīng)

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="左邊"
        app:rightText="右邊"
        app:midText="標(biāo)題"
        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、基本屬性介紹

四、組合控件類(lèi)

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);
        /**
         * 兩種初始化的不通，請(qǐng)看下面注釋講解
         */
        initOneType(context, attrs);//第一種初始化
//        initTwoType(context, attrs);//第二種初始化
    }

    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);

    }

    /**
     * 有興趣的請(qǐng)參考鴻洋大神的自定義講解
     *
     * 初始化屬性值：這種寫(xiě)法，不管你在布局中有沒(méi)有使用該屬性，都會(huì)執(zhí)行g(shù)etXXX方法賦值
     *假設(shè)一個(gè)場(chǎng)景：
     *    private int attr_mode = 1;//默認(rèn)為1
     *   //然后你在寫(xiě)getXXX方法的時(shí)候，是這么寫(xiě)的：
     *   attr_mode = array.getInt(i, 0);
     *
     *   可能你的自定義屬性有個(gè)默認(rèn)的值，然后你在寫(xiě)賦值的時(shí)候，一看是整形，就默默的第二個(gè)參數(shù)就給了個(gè)0，
     *   然而用戶(hù)根本沒(méi)有在布局文件里面設(shè)置這個(gè)屬性，你卻在運(yùn)行時(shí)將其變?yōu)榱?（而不是默認(rèn)值），而第二種就不存在這個(gè)問(wèn)題。
     *   當(dāng)然這個(gè)場(chǎng)景可以由規(guī)范的書(shū)寫(xiě)代碼的方式來(lái)避免，（把默認(rèn)值提取出來(lái)，都設(shè)置對(duì)就好了）。
     *
     * 場(chǎng)景二：
     *
     *   其實(shí)還有個(gè)場(chǎng)景，假設(shè)你是繼承自某個(gè)View，父類(lèi)的View已經(jīng)對(duì)該成員變量進(jìn)行賦值了，然后你這邊需要根據(jù)用戶(hù)的設(shè)置情況，
     *   去更新這個(gè)值，第一種寫(xiě)法，如果用戶(hù)根本沒(méi)有設(shè)置，你可能就將父類(lèi)的賦值給覆蓋了。
     *
     * @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報(bào)錯(cuò)，請(qǐng)改為if-else
     * 初始化屬性值：這種寫(xiě)法，只有在布局中設(shè)置了該屬性值后，才會(huì)調(diào)用getXXX()方法賦值
     * @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();
    }

    /**
     * 用來(lái)隱藏顯示View，只有g(shù)one 和 visible兩種情況，因?yàn)閕nVisible感到在這里用不到，就沒(méi)有封裝
     * @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);
        }
    }

    /**
     * 兩種監(jiān)聽(tīng)只能使用其中一種，不能同時(shí)使用
     *
     * ----------------------------第一種點(diǎn)擊監(jiān)聽(tīng)開(kāi)始處----------------------------------------
     * @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);
        }
    }

    /**
     * ----------------------------第二種點(diǎn)擊監(jiān)聽(tīng)開(kāi)始處----------------------------------------
     * @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);
    }

    /**
     * ----------------------------第二種點(diǎn)擊監(jiān)聽(tīng)結(jié)束處----------------------------------------
     * @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;
    }

    /**
     * 設(shè)置textView的標(biāo)題內(nèi)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);
        }
    }

    /**
     * 設(shè)置textView的字體顏色
     * @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);
    }

    /**
     * 設(shè)置title欄背景色
     * @param color
     */
    public void setTitleBarBackground(int color) {
        setBackgroundColor(color);
    }

    /**
     * 左右控件的隱藏顯示
     * @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、組合控件布局（custom_title_bar.xml）

為什么使用merge，因?yàn)榻M合控件已經(jīng)extends RelativeLayout，如果根布局還是用viewGroup的話(huà)，會(huì)使布局重復(fù)嵌套，影響View的繪制性能；

<?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、具體使用

CustomNavigatorBar customNavigatorBar = (CustomNavigatorBar) findViewById(R.id.customView);
        /**
         * 第一種監(jiān)聽(tīng)的具體實(shí)現(xiàn)
         */
        customNavigatorBar.setLeftImageOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this,"left",Toast.LENGTH_SHORT).show();
            }
        });

        /**
         * 第二種監(jiān)聽(tīng)的具體實(shí)現(xiàn)
         */
        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 ;
                }
            }
        });

來(lái)自：http://www.jianshu.com/p/b693d5ca29fd

標(biāo)簽： isp 代碼

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