可以看到标题栏的消息控件,以及底部三个菜单项都是通过MenuItemM来实现的
这里面只是演示菜单栏的子控件,我们将在下一篇博客中完成底部菜单栏的封装,这个控件里使用了上一篇博客介绍的一个控件ButtonExtendM,可以先看一下http://www.jb51.net/article/103920.htm
接下来看下实现过程
1 定义属性
<declare-styleable name="MenuItemM"> <attr name="backColor" /> <attr name="textColor" /> <attr name="textColorPress" /> <attr name="iconDrawable" /> <attr name="iconDrawablePress" /> <attr name="text" /> <attr name="textSize" /> <attr name="unReadCount" format="integer" /> <attr name="visibleMore"><enum name="visible" value="0x00000000" /><enum name="gone" value="0x00000008" /> </attr> <attr name="visibleNew"><enum name="visible" value="0x00000000" /><enum name="gone" value="0x00000008" /> </attr></declare-styleable>这里面重点看一下visibleMore和visibleNew里面的两个枚举值,这里面与View源码中的visible和gone保持一致。关于如何定义属性以及使用,可以参考我之前的博客。
<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:landptf="http://schemas.android.com/apk/res-auto" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center"> <com.landptf.view.ButtonExtendMandroid:id="@+id/bem_menu"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginRight="8dp"landptf:style="iconUp" /> <ImageViewandroid:id="@+id/iv_more"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="top|right"android:background="@drawable/icon_more"android:visibility="gone" /> <ImageViewandroid:id="@+id/iv_new"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="top|right"android:background="@drawable/icon_new"android:visibility="gone" /> <com.landptf.view.ButtonMandroid:id="@+id/btm_unread_count"android:layout_width="20dp"android:layout_height="20dp"android:layout_gravity="top|right"android:textSize="12sp"android:visibility="gone"landptf:backColor="#ff0000"landptf:fillet="true"landptf:shape="oval"landptf:textColor="@android:color/white" /></FrameLayout>这里面使用了FrameLayout,主要使用了ButtonExtendM上下结构的控件加上右上角的三种提示信息,数量提示,more提示,new提示
package com.landptf.view;import android.content.Context;import android.content.res.ColorStateList;import android.content.res.TypedArray;import android.graphics.drawable.Drawable;import android.util.AttributeSet;import android.util.Log;import android.view.Gravity;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.widget.FrameLayout;import android.widget.ImageView;import com.landptf.R;/** * Created by landptf on 2016/11/07. * 菜单按钮,例如底部菜单的item或者消息控件 */public class MenuItemM extends FrameLayout { private static final String TAG = MenuItemM.class.getSimpleName(); /*** 定义控件*/ private ButtonExtendM bemMenu; private ImageView ivMore; private ImageView ivNew; private ButtonM btmUnReadCount; private OnClickListener onClickListener = null; public interface OnClickListener {void onClick(View v); } /*** 设置View的Click事件** @param l*/ public void setOnClickListener(OnClickListener l) {this.onClickListener = l;//拦截ButtonExtendM控件的点击事件,使其指向this.onclickbemMenu.setOnClickListener(new ButtonExtendM.OnClickListener() { @Override public void onClick(View v) {onClickListener.onClick(v); }}); } public MenuItemM(Context context) {super(context); } public MenuItemM(Context context, AttributeSet attrs) {this(context, attrs, 0); } public MenuItemM(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);init(context, attrs, defStyleAttr); } private void init(Context context, AttributeSet attrs, int defStyle) {//加载布局LayoutInflater.from(context).inflate(R.layout.view_menu_item_m, this, true);//初始化控件bemMenu = (ButtonExtendM) findViewById(R.id.bem_menu);ivMore = (ImageView) findViewById(R.id.iv_more);ivNew = (ImageView) findViewById(R.id.iv_new);btmUnReadCount = (ButtonM) findViewById(R.id.btm_unread_count);btmUnReadCount.setGravity(Gravity.CENTER);TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.MenuItemM, defStyle, 0);if (a != null) { //设置背景色 ColorStateList colorList = a.getColorStateList(R.styleable.MenuItemM_backColor); if (colorList != null) {int backColor = colorList.getColorForState(getDrawableState(), 0);if (backColor != 0) { setBackColor(backColor);} } //设置icon Drawable iconDrawable = a.getDrawable(R.styleable.MenuItemM_iconDrawable); if (iconDrawable != null) {setIconDrawable(iconDrawable); } //记录View被按下时的icon的图片 Drawable iconDrawablePress = a.getDrawable(R.styleable.MenuItemM_iconDrawablePress); if (iconDrawablePress != null) {setIconDrawablePress(iconDrawablePress); } //设置文字的颜色 ColorStateList textColorList = a.getColorStateList(R.styleable.MenuItemM_textColor); if (textColorList != null) {int textColor = textColorList.getColorForState(getDrawableState(), 0);if (textColor != 0) { setTextColor(textColor);} } //记录View被按下时文字的颜色 ColorStateList textColorPressList = a.getColorStateList(R.styleable.MenuItemM_textColorPress); if (textColorPressList != null) {int textColorPress = textColorPressList.getColorForState(getDrawableState(), 0);if (textColorPress != 0) { setTextColorPress(textColorPress);} } //设置显示的文本内容 String text = a.getString(R.styleable.MenuItemM_text); if (text != null) {setText(text); } //设置文本字体大小 float textSize = a.getFloat(R.styleable.MenuItemM_textSize, 0); if (textSize != 0) {setTextSize(textSize); } //设置更多提示是否显示 int visibleMore = a.getInt(R.styleable.MenuItemM_visibleMore, -1); if (visibleMore != -1){setVisibilityMore(visibleMore); } //设置new提示是否显示 int visibleNew = a.getInt(R.styleable.MenuItemM_visibleNew, -1); if (visibleNew != -1){setVisibilityNew(visibleNew); } //设置消息未读数量 int unReadCount = a.getInt(R.styleable.MenuItemM_unReadCount, -1); if (unReadCount != -1){setUnReadCount(unReadCount); } a.recycle();}setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {if (onClickListener != null) { onClickListener.onClick(v);} }}); } /*** 设置为被选中状态* @param state in MotionEvent.ACTION_DOWN or MotionEvent.ACTION_UP*/ public void setPressState(int state){if (state != MotionEvent.ACTION_DOWN && state != MotionEvent.ACTION_UP){ Log.w(TAG, "无效参数"); return;}bemMenu.setPressState(state); } /*** 设置View的背景色** @param backColor*/ public void setBackColor(int backColor) {bemMenu.setBackColor(backColor); } /*** 设置icon的图片** @param iconDrawable*/ public void setIconDrawable(Drawable iconDrawable) {bemMenu.setIconDrawable(iconDrawable); } /*** 设置View被按下时的icon的图片** @param iconDrawablePress*/ public void setIconDrawablePress(Drawable iconDrawablePress) {bemMenu.setIconDrawablePress(iconDrawablePress); } /*** 设置文字的颜色** @param textColor*/ public void setTextColor(int textColor) {if (textColor == 0) return;bemMenu.setTextColor(textColor); } /*** 设置View被按下时文字的颜色** @param textColorPress*/ public void setTextColorPress(int textColorPress) {if (textColorPress == 0) return;bemMenu.setTextColorPress(textColorPress); } /*** 设置显示的文本内容** @param text*/ public void setText(CharSequence text) {bemMenu.setText(text); } /*** 获取显示的文本** @return*/ public String getText() {return bemMenu.getText(); } /*** 设置文本字体大小** @param size*/ public void setTextSize(float size) {bemMenu.setTextSize(size); } /*** 设置更多提示是否显示* 如果显示则先重置new和未读数量图标* @param visibleMore*/ public void setVisibilityMore(int visibleMore) {if (visibleMore == VISIBLE) { resetTip();}ivMore.setVisibility(visibleMore); } /*** 设置New提示是否显示* 如果显示则先重置更多和未读数量图标* @param visibleNew*/ public void setVisibilityNew(int visibleNew) {if (visibleNew == VISIBLE) { resetTip();}ivNew.setVisibility(visibleNew); } /*** 设置未读数量* 如果小于等于0,表示隐藏* 如果大于99,则将其隐藏,同时显示更多的提示* 如果在0-99区间,则隐藏更多和new图标* @param unReadCount*/ public void setUnReadCount(int unReadCount){if (unReadCount <= 0){ btmUnReadCount.setVisibility(GONE); //如果先设置100(此时会显示ivMore),再设置0,因此此处应将ivMore同时置为GONE if (ivMore.getVisibility() == VISIBLE){ivMore.setVisibility(GONE); } return;}if (unReadCount > 99){ setVisibilityMore(VISIBLE); return;}resetTip();btmUnReadCount.setVisibility(VISIBLE);btmUnReadCount.setText(unReadCount + ""); } /*** 重置提示信息*/ private void resetTip(){setVisibilityMore(GONE);setVisibilityNew(GONE);setUnReadCount(0); }}代码有点长,逻辑比较简单,本身自定义控件的过程都是类似的,比较多的是对外提供的接口。
<com.landptf.view.MenuItemM android:id="@+id/mim_home_page" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="32dp" landptf:iconDrawable="@drawable/icon_home_page" landptf:iconDrawablePress="@drawable/icon_home_page_press" landptf:textColor="#696969" landptf:textColorPress="#303f9f" landptf:text="首页" />这里面主要使用了以下四个属性,分别表示默认图标和按下后显示的图标,以及文字颜色和按下后的文字颜色
landptf:iconDrawable="@drawable/icon_home_page"landptf:iconDrawablePress="@drawable/icon_home_page_press"landptf:textColor="#696969"landptf:textColorPress="#303f9f"
final MenuItemM mimHomePage = (MenuItemM) findViewById(R.id.mim_home_page);if (mimHomePage != null){ //默认为选中状态 mimHomePage.setPressState(MotionEvent.ACTION_DOWN); mimHomePage.setVisibilityMore(View.VISIBLE); mimHomePage.setOnClickListener(new MenuItemM.OnClickListener() {@Overridepublic void onClick(View v) { //按下后隐藏提示信息 mimHomePage.setVisibilityMore(View.GONE);} });}好了,就介绍到这里了,更多的使用方法可以参考源码MenuItemMTestActivity.java。