Android 通讯录索引效果
吴小龙同学
共 1256字，需浏览 3分钟
·
2020-06-14 23:23
通讯录索引效果，网上很多了，我这里做个记录。
效果预览
SideBar此类自定义索引的字母
public class SideBar extends View {
// 触摸事件
private OnTouchingLetterChangedListener onTouchingLetterChangedListener;
// 26个字母
public static String[] A_Z = {"A", "B", "C", "D", "E", "F", "G", "H", "I",
"J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V",
"W", "X", "Y", "Z", "#"};
private int choose = -1;// 选中
private Paint paint = new Paint();
private TextView mTextDialog;
/**
* 为SideBar设置显示字母的TextView
*
* @param mTextDialog
*/
public void setTextView(TextView mTextDialog) {
this.mTextDialog = mTextDialog;
}
public SideBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public SideBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SideBar(Context context) {
super(context);
}
/**
* 重写这个方法
*/
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// 获取焦点改变背景颜色.
int height = getHeight();// 获取对应高度
int width = getWidth(); // 获取对应宽度
int singleHeight = height / A_Z.length - 2;// 获取每一个字母的高度 (这里-2仅仅是为了好看而已)
for (int i = 0; i < A_Z.length; i++) {
paint.setColor(Color.rgb(33, 65, 98)); //设置字体颜色
paint.setTypeface(Typeface.DEFAULT_BOLD); //设置字体
paint.setAntiAlias(true); //设置抗锯齿
paint.setTextSize(30); //设置字母字体大小
// 选中的状态
if (i == choose) {
paint.setColor(Color.parseColor("#3399ff")); //选中的字母改变颜色
paint.setFakeBoldText(true); //设置字体为粗体
}
// x坐标等于中间-字符串宽度的一半.
float xPos = width / 2 - paint.measureText(A_Z[i]) / 2;
float yPos = singleHeight * i + singleHeight;
canvas.drawText(A_Z[i], xPos, yPos, paint); //绘制所有的字母
paint.reset();// 重置画笔
}
}
@Override
public boolean dispatchTouchEvent(MotionEvent event) {
final int action = event.getAction();
final float y = event.getY();// 点击y坐标
final int oldChoose = choose;
final OnTouchingLetterChangedListener listener = onTouchingLetterChangedListener;
final int c = (int) (y / getHeight() * A_Z.length);// 点击y坐标所占总高度的比例*b数组的长度就等于点击b中的个数.
switch (action) {
case MotionEvent.ACTION_UP:
setBackgroundDrawable(new ColorDrawable(0x00000000));
choose = -1;//
invalidate();
if (mTextDialog != null) {
mTextDialog.setVisibility(View.INVISIBLE);
}
break;
default:
setBackgroundResource(R.color.colorPrimary);
if (oldChoose != c) { //判断选中字母是否发生改变
if (c >= 0 && c < A_Z.length) {
if (listener != null) {
listener.onTouchingLetterChanged(A_Z[c]);
}
if (mTextDialog != null) {
mTextDialog.setText(A_Z[c]);
mTextDialog.setVisibility(View.VISIBLE);
}
choose = c;
invalidate();
}
}
break;
}
return true;
}
/**
* 向外公开的方法
*
* @param onTouchingLetterChangedListener
*/
public void setOnTouchingLetterChangedListener(
OnTouchingLetterChangedListener onTouchingLetterChangedListener) {
this.onTouchingLetterChangedListener = onTouchingLetterChangedListener;
}
/**
* 接口
*
* @author coder
*/
public interface OnTouchingLetterChangedListener {
public void onTouchingLetterChanged(String s);
}
}
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/mRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<TextView
android:id="@+id/textDialog"
android:layout_width="80dip"
android:layout_height="80dip"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:gravity="center"
android:textColor="#ffffffff"
android:background="@color/colorPrimary"
android:textSize="30.0dip"
android:visibility="invisible" />
<你的包名.SideBar
android:id="@+id/sidebar"
android:layout_width="20dip"
android:layout_height="wrap_content"
android:layout_alignParentRight="true" />
RelativeLayout>
public class ContactActivity extends BaseActivity {
@Bind(R.id.mRecyclerView)
RecyclerView mRecyclerView;
@Bind(R.id.sidebar)
SideBar sidebar;
@Bind(R.id.textDialog)
TextView textDialog;
private List data;
ContactAdapter mContactAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contact);
sidebar.setTextView(textDialog);
// 设置字母导航触摸监听
sidebar.setOnTouchingLetterChangedListener(new SideBar.OnTouchingLetterChangedListener() {
@Override
public void onTouchingLetterChanged(String s) {
// TODO Auto-generated method stub
// 该字母首次出现的位置
int position = mContactAdapter.getPositionForSelection(s.charAt(0));
if (position != -1) {
mRecyclerView.getLayoutManager().scrollToPosition(position);
}
}
});
data = getData(getResources().getStringArray(R.array.listpersons));
// 数据在放在adapter之前需要排序
Collections.sort(data, new PinyinComparator());
for (int i = 0; i < data.size(); i++) {
Log.i("wxl", "Fpinyin=" + data.get(i).getFirstPinYin());
}
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(linearLayoutManager);
mContactAdapter = new ContactAdapter(data);
mRecyclerView.setAdapter(mContactAdapter);
}
private List getData(String[] data) {
List listarray = new ArrayList();
for (int i = 0; i < data.length; i++) {
String pinyin = PinyinUtils.getPingYin(data[i]);
String Fpinyin = pinyin.substring(0, 1).toUpperCase();
PersonBean person = new PersonBean();
person.setName(data[i]);
person.setPinYin(pinyin);
// 正则表达式，判断首字母是否是英文字母
if (Fpinyin.matches("[A-Z]")) {
person.setFirstPinYin(Fpinyin);
} else {
person.setFirstPinYin("#");
}
listarray.add(person);
}
return listarray;
}
}
模拟数据
"1.0" encoding="utf-8"?>
<resources>
<string-array name="listpersons">
<item> 马云item>
<item> 马化腾item>
<item> 佩兰item>
<item> 奥巴马item>
<item> 普京item>
<item> 金三胖item>
<item> 暗影军团item>
<item> 141特遣队item>
<item> 冲锋号item>
<item> +胜利号item>
<item> 超级赛亚人item>
<item> 金克拉item>
<item> 亚古兽item>
<item> 数码宝贝大冒险item>
<item> 大胜归来item>
<item> 道士下山item>
<item> A利亚克item>
<item> 胜利冲锋龙卷风item>
<item> 走在冷风中item>
<item> 外面的世界item>
<item> 烦恼歌item>
<item> 如果没有你item>
<item> 四季歌item>
<item> 南山南item>
<item> +胜利号item>
<item> 光能使者item>
<item> 铁甲小宝item>
<item> 皮卡丘item>
<item> 奥特曼item>
<item> 开普勒452bitem>
<item> 神舟20号item>
<item> 屌炸天的结尾item>
string-array>
resources>
public class PersonBean {
private String Name;
private String PinYin;
private String FirstPinYin;
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getPinYin() {
return PinYin;
}
public void setPinYin(String pinYin) {
PinYin = pinYin;
}
public String getFirstPinYin() {
return FirstPinYin;
}
public void setFirstPinYin(String firstPinYin) {
FirstPinYin = firstPinYin;
}
public String toString() {
return "姓名：" + getName() + " 拼音：" + getPinYin() + " 首字母："
+ getFirstPinYin();
}
}
这里需要 pinyin4j 包，下载地址：http://pinyin4j.sourceforge.net/
public class PinyinUtils {
/**
* 汉字转拼音
*/
public static String getPingYin(String inputString) {
HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat();
format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
format.setVCharType(HanyuPinyinVCharType.WITH_V);
char[] input = inputString.trim().toCharArray();
String output = "";
try {
for (char curchar : input) {
if (java.lang.Character.toString(curchar).matches("[\\u4E00-\\u9FA5]+")) {
String[] temp = PinyinHelper.toHanyuPinyinStringArray(curchar, format);
output += temp[0];
} else
output += java.lang.Character.toString(curchar);
}
} catch (BadHanyuPinyinOutputFormatCombination e) {
e.printStackTrace();
}
return output;
}
}
按照字母排序类
public class PinyinComparator implements Comparator<PersonBean> {
@Override
public int compare(PersonBean lhs, PersonBean rhs) {
return sort(lhs, rhs);
}
private int sort(PersonBean lhs, PersonBean rhs) {
// 获取ascii值
int lhs_ascii = lhs.getFirstPinYin().toUpperCase().charAt(0);
int rhs_ascii = rhs.getFirstPinYin().toUpperCase().charAt(0);
// 判断若不是字母，则排在字母之后
if (lhs_ascii < 65 || lhs_ascii > 90)
return 1;
else if (rhs_ascii < 65 || rhs_ascii > 90)
return -1;
else
return lhs.getPinYin().compareTo(rhs.getPinYin());
}
}
public class ContactAdapter extends RecyclerView.Adapter<ContactAdapter.ViewHolder> {
List data;
public ContactAdapter(List data) {
this.data = data;
}
class ViewHolder extends RecyclerView.ViewHolder {
TextView nickname;
TextView tag;
public ViewHolder(View itemView) {
super(itemView);
nickname = (TextView) itemView.findViewById(R.id.nickname);
tag = (TextView) itemView.findViewById(R.id.tag);
}
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = View.inflate(parent.getContext(), R.layout.contact_item, null);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
PersonBean person = data.get(position);
// 获取首字母的assii值
int selection = person.getFirstPinYin().charAt(0);
// 通过首字母的assii值来判断是否显示字母
int positionForSelection = getPositionForSelection(selection);
if (position == positionForSelection) {// 相等说明需要显示字母
holder.tag.setVisibility(View.VISIBLE);
holder.tag.setText(person.getFirstPinYin());
} else {
holder.tag.setVisibility(View.GONE);
}
holder.nickname.setText(data.get(position).getName());
}
public int getPositionForSelection(int selection) {
for (int i = 0; i < data.size(); i++) {
String Fpinyin = data.get(i).getFirstPinYin();
char first = Fpinyin.toUpperCase().charAt(0);
if (first == selection) {
return i;
}
}
return -1;
}
@Override
public int getItemCount() {
return data.size();
}
}
contact_item.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/tag"
android:layout_width="match_parent"
android:layout_height="20dp"
android:background="#e6e6e6"
android:gravity="center_vertical"
android:paddingLeft="10dip"
android:text="Z"
android:visibility="visible" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:id="@+id/view_lv_item_line"
android:layout_width="match_parent"
android:layout_height="0.5dip"
android:layout_marginLeft="10dip"
android:layout_marginRight="20dip"
android:background="#174465" />
<ImageView
android:id="@+id/iv_lv_item_head"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/view_lv_item_line"
android:layout_marginLeft="5dp"
android:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/nickname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="5dip"
android:layout_toRightOf="@id/iv_lv_item_head"
android:text="周华健" />
RelativeLayout>
LinearLayout>
- End -
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