Android实现底部菜单 Android自定义控件实现底部菜单(下)
landptf 人气:0想了解Android自定义控件实现底部菜单(下)的相关内容吗,landptf在本文为您仔细讲解Android实现底部菜单的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:Android,底部菜单,下面大家一起来学习吧。
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.MenuM android: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() { @Override public 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() { @Override public void onClick(View v) { //此处需要根据view获取position MenuM.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
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