Welcome

首页 / 移动开发 / Android / Android自定义控件实现底部菜单(下)

在app中经常会用到底部菜单的控件,每次都需要写好多代码,今天我们用到了前几篇博客里的控件来进一步封装底部菜单。先看效果图:


主要包括以下功能:
1 设置icon以及点击之后的icon
2 设置文字
3 设置文字颜色以及点击之后的文字颜色
4 设置未读数量、更多以及new
我们先看如何使用,然后再看如何实现的

1 在布局文件中引用MenuM

<com.landptf.view.MenuMandroid:id="@+id/mm_bottom"android:layout_width="match_parent"android:layout_height="56dp"android:layout_alignParentBottom="true"landptf:backColor="@color/content"landptf:textColor="@color/text"landptf:textColorPress="@color/colorPrimary"landptf:count="4"/>
这里主要说一下count属性,表示菜单项的个数。
2 在Activity中初始化
final MenuM mmBottom = (MenuM) findViewById(R.id.mm_bottom);mmBottom.setText(text);mmBottom.setIconDrawable(iconDrawable);mmBottom.setIconDrawablePress(iconDrawablePress);//设置默认选中第一项mmBottom.setPressState(0, MotionEvent.ACTION_DOWN);mmBottom.setOnItemClickListener(new MenuM.OnItemClickListener() {@Overridepublic void onItemClick(int position) {Toast.makeText(MenuMTestActivity.this, mmBottom.getText(position), Toast.LENGTH_SHORT).show();}});mmBottom.setUnReadCount(0, 100);mmBottom.setUnReadCount(1, 15);mmBottom.setVisibilityMore(2, View.VISIBLE);mmBottom.setVisibilityNew(3, View.VISIBLE);
有以下几个全局变量
text = new String[]{"首页", "通讯录", "发现", "我"};//为了演示方便我只找了两张icon,在实际开发中一般需要从网络上下载,然后在设置Drawable drawable = getResources().getDrawable(R.drawable.icon_home_page);Drawable drawablePress = getResources().getDrawable(R.drawable.icon_home_page_press);iconDrawable = new Drawable[]{drawable, drawable, drawable, drawable};iconDrawablePress = new Drawable[]{drawablePress, drawablePress, drawablePress, drawablePress};
以上就是全部代码是不是很方便呢!!!
接下来我们来看下如何实现的

1 在style里定义了几个属性这里就不贴出来了,大家可以查看源码,在本文的最后会给出全部源码的下载地址
2 MenuM.java

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.support.annotation.Nullable;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.LinearLayout;import android.widget.RelativeLayout;import com.landptf.R;import java.util.ArrayList;import java.util.List;/** * Created by landptf on 2017/01/15. * 菜单,可用于底部导航菜单,以及内容区的菜单列表 */public class MenuM extends LinearLayout {private static final String TAG = MenuM.class.getSimpleName();private Context mContext;private List<MenuItemM> menuList;private List<RelativeLayout> rlList;private OnItemClickListener mOnItemClickListener;private int count = 0;public MenuM(Context context) {this(context, null, 0);}public MenuM(Context context, AttributeSet attrs) {this(context, attrs, 0);}public MenuM(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);mContext = context;init(attrs, defStyle);}private void init(AttributeSet attrs, int defStyle) {setOrientation(LinearLayout.HORIZONTAL);TypedArray a = mContext.obtainStyledAttributes(attrs, R.styleable.menuM, defStyle, 0);if (a != null) {//初始化菜单数量count = a.getInteger(R.styleable.menuM_count, 0);if (count > 0) {initControl();}//设置背景色ColorStateList colorList = a.getColorStateList(R.styleable.menuM_backColor);if (colorList != null) {int backColor = colorList.getColorForState(getDrawableState(), 0);if (backColor != 0) {setBackColor(backColor);}}//设置文字的颜色ColorStateList textColorList = a.getColorStateList(R.styleable.menuM_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.menuM_textColorPress);if (textColorPressList != null) {int textColorPress = textColorPressList.getColorForState(getDrawableState(), 0);if (textColorPress != 0) {setTextColorPress(textColorPress);}}//设置文本字体大小float textSize = a.getFloat(R.styleable.menuM_textSize, 0);if (textSize != 0) {setTextSize(textSize);}a.recycle();}}/** * 由于MenuItemM是有ButtonExtendM扩展而来,为了适应上下左右不同的样式 * 需要在MenuItemM外层嵌套一层RelativeLayout,暂时没有找到更好的替代方案 */private void initControl() {rlList = new ArrayList<>(count);menuList = new ArrayList<>(count);for (int i = 0; i < count; i++) {RelativeLayout rlPanel = new RelativeLayout(mContext);LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.MATCH_PARENT);lp.weight = 1;rlPanel.setLayoutParams(lp);final MenuItemM menuItem = new MenuItemM(mContext);RelativeLayout.LayoutParams lpR = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);lpR.addRule(RelativeLayout.CENTER_IN_PARENT);menuItem.setLayoutParams(lpR);menuItem.setOnClickListener(new MenuItemM.OnClickListener() {@Overridepublic void onClick(View v) {//此处需要根据view获取positionMenuM.this.onClick(getPosition(menuItem));}});rlPanel.addView(menuItem);menuList.add(menuItem);rlList.add(rlPanel);addView(rlPanel);}}/** * 设置View的背景色 * * @param backColor */public void setBackColor(int backColor) {if (backColor == 0) return;if (!checkCount()) {return;}for (RelativeLayout item : rlList) {item.setBackgroundColor(backColor);}for (MenuItemM item : menuList) {item.setBackColor(backColor);}}/** * 设置文字的颜色 * * @param textColor */public void setTextColor(int textColor) {if (textColor == 0) return;if (!checkCount()) {return;}for (MenuItemM item : menuList) {item.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;if (!checkCount()) {return;}for (MenuItemM item : menuList) {item.setTextColorPress(textColorPress);}}/** * 设置icon的图片 * * @param iconDrawable */public void setIconDrawable(Drawable[] iconDrawable) {if (count != iconDrawable.length) {Log.e(TAG, "the iconDrawable length do not equals count");return;}for (int i = 0; i < count; i++) {if (iconDrawable[i] != null) {menuList.get(i).setIconDrawable(iconDrawable[i]);}}}/** * 设置icon的图片 * * @param iconDrawable */public void setIconDrawable(List<Drawable> iconDrawable) {if (count != iconDrawable.size()) {Log.e(TAG, "the iconDrawable length do not equals count");return;}for (int i = 0; i < count; i++) {if (iconDrawable.get(i) != null) {menuList.get(i).setIconDrawable(iconDrawable.get(i));}}}/** * 设置View被按下时的icon的图片 * * @param iconDrawablePress */public void setIconDrawablePress(Drawable[] iconDrawablePress) {if (count != iconDrawablePress.length) {Log.e(TAG, "the iconDrawablePress length do not equals count");return;}for (int i = 0; i < count; i++) {if (iconDrawablePress[i] != null) {menuList.get(i).setIconDrawablePress(iconDrawablePress[i]);}}}/** * 设置View被按下时的icon的图片 * * @param iconDrawablePress */public void setIconDrawablePress(List<Drawable> iconDrawablePress) {if (count != iconDrawablePress.size()) {Log.e(TAG, "the iconDrawablePress length do not equals count");return;}for (int i = 0; i < count; i++) {if (iconDrawablePress.get(i) != null) {menuList.get(i).setIconDrawablePress(iconDrawablePress.get(i));}}}/** * 设置显示的文本内容 * * @param text */public void setText(CharSequence[] text) {for (int i = 0; i < count; i++) {menuList.get(i).setText(text[i]);}}/** * 设置显示的文本内容 * * @param text */public void setText(List<CharSequence> text) {if (count != text.size()) {Log.e(TAG, "the text length do not equals count");return;}for (int i = 0; i < count; i++) {menuList.get(i).setText(text.get(i));}}/** * 获取显示的文本 * * @return */public String getText(int index) {if (!checkIndex(index)) {return "";}return menuList.get(index).getText();}/** * 设置文本字体大小 * * @param size */public void setTextSize(float size) {if (!checkCount()) {return;}for (MenuItemM item : menuList) {item.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 index, int visibleMore) {if (!checkIndex(index)) {return;}menuList.get(index).setVisibilityMore(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 index, int visibleNew) {if (!checkIndex(index)) {return;}menuList.get(index).setVisibilityNew(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 index, int unReadCount) {if (!checkIndex(index)) {return;}menuList.get(index).setUnReadCount(unReadCount);}/** * 设置为被选中状态 * * @param index * @param state in MotionEvent.ACTION_DOWN or MotionEvent.ACTION_UP */public void setPressState(int index, int state) {if (!checkIndex(index)) {return;}menuList.get(index).setPressState(state);}/** * 设置菜单点击事件 * * @param listener */public void setOnItemClickListener(@Nullable OnItemClickListener listener) {mOnItemClickListener = listener;}private void onClick(int position) {for (int i = 0; i < count; i++) {if (i == position) {setPressState(i, MotionEvent.ACTION_DOWN);} else {setPressState(i, MotionEvent.ACTION_UP);}}mOnItemClickListener.onItemClick(position);}/** * 获取点击菜单项的位置 * @param item * @return */private int getPosition(MenuItemM item) {for (int i = 0; i < count; i++) {if (item == menuList.get(i)) {return i;}}return -1;}/** * 检查是否设置了Count参数 * * @return */private boolean checkCount() {if (count == 0) {Log.e(TAG, "You must set the count first");return false;}return true;}/** * 校验输入参数是否合法 * * @param index * @return */private boolean checkIndex(int index) {if (!checkCount()) {return false;}if (index < 0 || index >= count) {Log.e(TAG, "the index is wrong");return false;}return true;}public interface OnItemClickListener {void onItemClick(int position);}}
代码比较简单,相信大家看一遍都可以理解,这里面使用了MenuItemM自定义控件,有不了解的可以参考以前的博客http://www.jb51.net/article/103913.htm或者查看源码。
全部代码已托管到开源中国的码云上,欢迎下载,地址:https://git.oschina.net/landptf/landptf.git
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。