android高仿微信联系人选择

标签： android微信

2016-01-09 16:38 1899人阅读 评论(0) 收藏 举报

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自定义控件（4） 

版权声明：本文为博主原创文章，未经博主允许不得转载。

如题，仿造微信联系人选择。

实现起来也是相当的简单。

ChineseToEnglish为网上找的中文转拼音的类， 
CompareSort是实现联系人list的排序类 
SideBarView右侧的字母条 
User UserAdapter 测试数据类

主要看下SideBarView

package com.jadyn.contactslist.contact;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Typeface;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.View;import com.jadyn.contactslist.R;/** * Created by Administrator on 2016/1/8. */public class SideBarView extends View{    public static String[] b = { "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 selectPos = -1;    private final int defaultNormalColor = Color.TRANSPARENT;    private final int defaultPressColor = Color.parseColor("#1F000000");    private final int defaultTextSize = 30;    private final int defaultNorTextColor = Color.parseColor("#cc181818");    private final int defaultPressTextColor = Color.parseColor("#ff000000");    private int sideBarBgNorColor;    private int sideBarBgPressColor;    private int sideBarTextSize;    private int sideBarNorTextColor;    private int sideBarPressTextColor;    public SideBarView(Context context) {        this(context, null);    }    public SideBarView(Context context, AttributeSet attrs) {        this(context, attrs, 0);        init();    }    public SideBarView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.SideBarView, defStyleAttr, 0);        sideBarBgNorColor = typedArray.getColor(R.styleable.SideBarView_sidebar_nor_background,defaultNormalColor);        sideBarBgPressColor = typedArray.getColor(R.styleable.SideBarView_sidebar_press_background,defaultPressColor);        sideBarTextSize = typedArray.getInt(R.styleable.SideBarView_sidebar_text_size, defaultTextSize);        sideBarNorTextColor = typedArray.getColor(R.styleable.SideBarView_sidebar_text_color_nor, defaultNorTextColor);        sideBarPressTextColor = typedArray.getColor(R.styleable.SideBarView_sidebar_text_color_press, defaultPressTextColor);        typedArray.recycle();        init();    }    Paint paint;    Paint paintSelect;    private void init() {        paint= new Paint() ;        paint.setAntiAlias(true);        paint.setColor(sideBarNorTextColor);        paint.setTypeface(Typeface.DEFAULT_BOLD);        paint.setTextSize(sideBarTextSize);        paintSelect= new Paint() ;        paintSelect.setAntiAlias(true);        paintSelect.setTypeface(Typeface.DEFAULT_BOLD);        paintSelect.setTextSize(sideBarTextSize);        paintSelect.setColor(sideBarPressTextColor);    }    int height;    int width;    int perHeight;    @Override    public boolean onTouchEvent(MotionEvent event) {        float x = event.getY();        //计算点击位置所在的position        int position = (int) (x / perHeight);        switch (event.getAction()){            case MotionEvent.ACTION_DOWN:                //点击字母条变色                setBackgroundColor(sideBarBgPressColor);                //点击时回调                selectPos = position;                if(listener != null)                    listener.onLetterSelected(b[selectPos]);                invalidate();                break;            case MotionEvent.ACTION_MOVE:                //切换到其他字母时执行                if(position != selectPos){                    selectPos = position;                    if(listener != null)                        listener.onLetterChanged(b[selectPos]);                    invalidate();                }                break;            case MotionEvent.ACTION_UP:            case MotionEvent.ACTION_CANCEL:                setBackgroundColor(sideBarBgNorColor);                if(listener != null){                    listener.onLetterReleased(b[selectPos]);                }                break;        }        return true;    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        height = getHeight();        width = getWidth();        perHeight = height / b.length;        for (int i = 0; i < b.length; i++) {            //画字母            canvas.drawText(b[i],width/2 - paint.measureText(b[i])/2,perHeight * i+perHeight,paint);            //选中的字母变色            if(selectPos == i){                canvas.drawText(b[i],width/2 - paint.measureText(b[i])/2,perHeight * i+perHeight,paintSelect);            }        }    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int width = resolveMeasure(widthMeasureSpec, true);        int height = resolveMeasure(heightMeasureSpec,false);        setMeasuredDimension(width,height);    }    private int resolveMeasure(int measureSpec ,boolean isWidth) {        int result = 0 ;        int padding = isWidth ? getPaddingLeft() + getPaddingRight() : getPaddingTop() + getPaddingBottom();        // 获取宽度测量规格中的mode        int mode = MeasureSpec.getMode(measureSpec);        // 获取宽度测量规格中的size        int size = MeasureSpec.getSize(measureSpec);        switch (mode){            case MeasureSpec.EXACTLY:                result = size;                break;            case MeasureSpec.AT_MOST:                case MeasureSpec.UNSPECIFIED:                    float textWidth = paint.measureText(b[0]);                    if(isWidth){                        result = getSuggestedMinimumWidth() > textWidth ? getSuggestedMinimumWidth() : (int) textWidth;                        result += padding;                        result = Math.min(result,size);                    }else{                        result = size;                        result = Math.max(result,size);                    }                break;        }        return result;    }    public float dp2px(float dp) {        final float scale = getResources().getDisplayMetrics().density;        return dp * scale + 0.5f;    }    @Override    protected int getSuggestedMinimumWidth() {        return (int) dp2px(25);    }    public interface LetterSelectListener{        void onLetterSelected(String letter);        void onLetterChanged(String letter);        void onLetterReleased(String letter);    }    private LetterSelectListener listener;    public void setOnLetterSelectListen(LetterSelectListener listen){        this.listener = listen;    }}
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然后写一个排序的Comparator

//@标签代表A前面的那些，#代表除了A-Z以外的其他标签public class CompareSort implements Comparator<User> {    @Override    public int compare(User user1, User user2) {        if(user1.getLetter().equals("@") || user2.getLetter().equals("@")){            //通讯录前面的ｉｔｅｍ(公众号，标签......)            return user1.getLetter().equals("@") ? -1:1;        }        //user1属于#标签，放到最后面        else if(!user1.getLetter().matches("[A-z]+")){            return 1;        //user2属于#标签，放到最后面        }else if(!user2.getLetter().matches("[A-z]+")){            return -1;        }else {            return user1.getLetter().compareTo(user2.getLetter());        }    }}
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public class UserAdapter extends BaseAdapter{    private Context mContext;    private ArrayList<User> users;    public UserAdapter(Context context) {        this.mContext = context;        users = new ArrayList<>();    }    public void setData(List<User> data){        this.users.clear();        this.users.addAll(data);    }    @Override    public int getCount() {        return users.size();    }    @Override    public Object getItem(int position) {        return users.get(position);    }    @Override    public long getItemId(int position) {        return 0;    }    @Override    public View getView(final int position, View convertView, ViewGroup parent) {        ViewHolder viewHolder = null;        if (convertView == null) {            viewHolder = new ViewHolder();            convertView = LayoutInflater.from(mContext).inflate(R.layout.item, null);            viewHolder.tvTitle = (TextView) convertView.findViewById(R.id.title);            viewHolder.tvName = (TextView) convertView.findViewById(R.id.name);            viewHolder.tvItem = (LinearLayout) convertView.findViewById(R.id.item);            convertView.setTag(viewHolder);        } else {            viewHolder = (ViewHolder) convertView.getTag();        }        viewHolder.tvName.setText(users.get(position).getName());        viewHolder.tvItem.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Toast.makeText(mContext,users.get(position).getName(),Toast.LENGTH_SHORT).show();            }        });        //当前的item的title与上一个item的title不同的时候回显示title(A,B,C......)        if(position == getFirstLetterPosition(position) && !users.get(position).getLetter().equals("@")){            viewHolder.tvTitle.setVisibility(View.VISIBLE);            viewHolder.tvTitle.setText(users.get(position).getLetter().toUpperCase());        }else {            viewHolder.tvTitle.setVisibility(View.GONE);        }        return convertView;    }    /**     * 顺序遍历所有元素．找到position对应的title是什么（A,B,C?）然后找这个title下的第一个item对应的position     *     * @param position     * @return     */    private int getFirstLetterPosition(int position) {        String letter = users.get(position).getLetter();        int cnAscii = ChineseToEnglish.getCnAscii(letter.toUpperCase().charAt(0));        int size = users.size();        for (int i = 0; i < size; i++) {            if(cnAscii == users.get(i).getLetter().charAt(0)){                return i;            }        }        return -1;    }    /**     * 顺序遍历所有元素．找到letter下的第一个item对应的position     * @param letter     * @return     */    public int getFirstLetterPosition(String letter){        int size = users.size();        for (int i = 0; i < size; i++) {            if(letter.charAt(0) == users.get(i).getLetter().charAt(0)){                return i;            }        }        return -1;    }    class ViewHolder {        TextView tvName;        TextView tvTitle;        LinearLayout tvItem;    }}
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public class MainActivity extends ActionBarActivity implements SideBarView.LetterSelectListener {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        init();    }    ListView mListview;    UserAdapter mAdapter;    TextView mTip;    private void init() {        mListview = (ListView) findViewById(R.id.listview);        SideBarView sideBarView = (SideBarView) findViewById(R.id.sidebarview);        String[] contactsArray = getResources().getStringArray(R.array.data);        String[] headArray = getResources().getStringArray(R.array.head);        mTip = (TextView) findViewById(R.id.tip);        //模拟添加数据到Arraylist        int length = contactsArray.length;        ArrayList<User> users = new ArrayList<>();        for (int i = 0; i < length; i++) {            User user = new User();            user.setName(contactsArray[i]);            String firstSpell = ChineseToEnglish.getFirstSpell(contactsArray[i]);            String substring = firstSpell.substring(0, 1).toUpperCase();            if(substring.matches("[A-Z]")){                user.setLetter(substring);            }else {                user.setLetter("#");            }            users.add(user);        }        for (int i = 0; i < headArray.length; i++) {            User user = new User();            user.setName(headArray[i]);            user.setLetter("@");            users.add(user);        }        //排序        Collections.sort(users, new CompareSort());        //设置数据        mAdapter = new UserAdapter(this);        mAdapter.setData(users);        mListview.setAdapter(mAdapter);        //设置回调        sideBarView.setOnLetterSelectListen(this);    }    @Override    public void onLetterSelected(String letter) {        setListviewPosition(letter);        mTip.setText(letter);        mTip.setVisibility(View.VISIBLE);    }    @Override    public void onLetterChanged(String letter) {        setListviewPosition(letter);        mTip.setText(letter);    }    @Override    public void onLetterReleased(String letter) {        mTip.setVisibility(View.GONE);    }    private void setListviewPosition(String letter){        int firstLetterPosition = mAdapter.getFirstLetterPosition(letter);        if(firstLetterPosition != -1){            mListview.setSelection(firstLetterPosition);        }    }}
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上面代码比较少，所以就懒得说了。有兴趣的可以下载来看看

代码下载 
https://github.com/JadynChan/ContactsList 
http://download.csdn.net/detail/recall2012/9397297