Android侧边栏滑动切换的view效果

概述废话不多说了，直接给大家贴代码了，具体代码如下所示：importandroid.content.Context;

废话不多说了，直接给大家贴代码了，具体代码如下所示：

import androID.content.Context;import androID.graphics.Canvas;import androID.graphics.Paint;import androID.graphics.drawable.BitmapDrawable;import androID.util.AttributeSet;import androID.vIEw.MotionEvent;import androID.vIEw.VIEw;public class SIDebar extends VIEw {  private static final int margin_BottOM = 2;  private int mItemHeight = 18;  private OnLettertouchListener mOnLettertouchListener;  private Paint mPaint;  private float mWIDthCenter;  private int backgroundcolor = 0x00F0F0F0;  private char[] chars = AppCommon.INDEXER_CHARS;  public interface OnLettertouchListener {    public abstract voID onpressedDown(int index,char ch);    public abstract voID onpressedUp(int index,char ch);  }  public SIDebar(Context context) {    this(context,null);  }  public SIDebar(Context context,AttributeSet attrs) {    this(context,attrs,-1);  }  public SIDebar(Context context,AttributeSet attrs,int defStyle) {    super(context,defStyle);    init();  }  private int startY = 0;//其实位置的y轴坐标  public SIDebar setChars(char[] chars) {    this.chars = chars;//   for(int i = 0 ; i < (26 - chars.length) / 2 ; i++){//     startY += i * mItemHeight;//   }    init();    postInvalIDate();    return this;  }  private voID init() {    mPaint = new Paint();    mPaint.setcolor(0xFFCFCFD0);    mPaint.setAntiAlias(true);    mPaint.setFakeBoldText(true);    mPaint.setTextSize(32);    mPaint.setcolor(getResources().getcolor(R.color.blue));    mPaint.setSubpixelText(true);    mPaint.setTextAlign(Paint.Align.CENTER);    setBackgroundcolor(backgroundcolor);  }  public boolean ontouchEvent(MotionEvent event) {    super.ontouchEvent(event);    int IDx = (int) event.getY() / mItemHeight;    if (IDx >= chars.length) {      IDx = chars.length - 1;    } else if (IDx < 0) {      IDx = 0;    }    if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_MOVE) {      setBackgroundResource(R.color.sIDebar_select_background);      if (mOnLettertouchListener != null) {        mOnLettertouchListener.onpressedDown(IDx,chars[IDx]);      }    } else if (event.getAction() == MotionEvent.ACTION_UP) {      setBackgroundDrawable(new BitmapDrawable());      setBackgroundcolor(backgroundcolor);      if (mOnLettertouchListener != null) {        mOnLettertouchListener.onpressedUp(IDx,chars[IDx]);      }    }    return true;  }  @OverrIDe  protected voID onSizeChanged(int w,int h,int olDW,int oldh) {    mItemHeight = (h - margin_BottOM) / 26;    mWIDthCenter = getMeasureDWIDth() / 2;    super.onSizeChanged(w,h,olDW,oldh);  }  protected voID onDraw(Canvas canvas) {    for (int i = 0; i < chars.length; i++) {      canvas.drawText(String.valueOf(chars[i]),mWIDthCenter,startY + mItemHeight + (i * mItemHeight),mPaint);    }    super.onDraw(canvas);  }  public voID setonLettertouchListener(OnLettertouchListener Listener) {    mOnLettertouchListener = Listener;  }}

以上所述是小编给大家介绍的AndroID侧边栏滑动切换的vIEw效果,希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对编程小技巧网站的支持！

总结

以上是内存溢出为你收集整理的Android侧边栏滑动切换的view效果全部内容，希望文章能够帮你解决Android侧边栏滑动切换的view效果所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。