android自定义控件实现简易时间轴(2)
这篇做了一个简单的时间轴控件。右侧的数据就是一个简单的字符串。问题还是有的，当右侧的文字长度不一样的时候就会有问题了。现在可以修改一下适配右侧的文字。
效果如下：
代码：
private paint bgpaint, linepaint, borderpaint,textpaint;
private rect bgrect, textrect;
//基本属性
private int mtextsize;
private int mtextcolor;
private string mtexttitle="默认文本内容";
private int linecolr = color.parsecolor("#aaaaaa");
private int bordercolor = color.parsecolor("#aaaaaa");
private int bgcolor = color.parsecolor("#138ddd");
private int mbordercolor=0xffdddddd;
private int mborderwidth = 10;
private int mlinecolor=color.parsecolor("#ff000000");
private int mlinewidth = 2;
private int mlineheight;
private int mbgcolor;
private int mwidth =0;
private int mheight =300;//整个控件的宽和高
//line绘制
private int linelocation = -1;//0 上方 1 下方 2 上下两个
private int mradius = 90;//直径,最终会被宽高限制
//设置line的位置 0 上方 1 下方 2 上下两个
public void setlinelocation(int linelocation) {
this.linelocation = linelocation;
}
//设置纯色的整圆形，包括背景
public void setbgandbordercolor(int color) {
this.mbgcolor = color;
}
public void setmheight(int mheight) {
this.mheight = mheight;
}
public void setmbordercolor(int mbordercolor) {
this.mbordercolor = mbordercolor;
}
public void setmtexttitle(string mtexttitle) {
this.mtexttitle = mtexttitle;
}
public void setmradius(int mradius) {
this.mradius = mradius;
}
public void setmlineheight(int mlineheight) {
this.mlineheight = mlineheight;
}
public timelinesingleview(context context) {
this(context,null);
}
public timelinesingleview(context context, attributeset attrs) {
this(context, attrs,0);
}
public timelinesingleview(context context, attributeset attrs, int defstyleattr) {
super(context, attrs, defstyleattr);
typedarray a = context.gettheme().obtainstyledattributes(attrs, r.styleable.customcicleview, defstyleattr, 0);
int n = a.getindexcount();
for (int i = 0; i < n; i++) {
int attr = a.getindex(i);
switch (attr) {
case r.styleable.customcicleview_textsize:
// 默认设置为16sp，typevalue也可以把sp转化为px
mtextsize = a.getdimensionpixelsize(attr, (int) typedvalue.applydimension(
typedvalue.complex_unit_dip, 14, getresources().getdisplaymetrics()));
break;
case r.styleable.customcicleview_textcolor:
mtextcolor = a.getcolor(attr, color.black);
break;
case r.styleable.customcicleview_texttitle:
mtexttitle = a.getstring(attr);
break;
case r.styleable.customcicleview_linewidth:
mlinewidth = a.getdimensionpixelsize(attr, (int) typedvalue.applydimension(
typedvalue.complex_unit_dip, 2, getresources().getdisplaymetrics()));
break;
case r.styleable.customcicleview_linecolor:
mlinecolor = a.getcolor(attr, linecolr);
break;
case r.styleable.customcicleview_mradius:
mradius=a.getdimensionpixelsize(attr, (int) typedvalue.applydimension(
typedvalue.complex_unit_dip, 100, getresources().getdisplaymetrics()));
break;
case r.styleable.customcicleview_borderwidth:
mborderwidth = a.getdimensionpixelsize(attr, (int) typedvalue.applydimension(
typedvalue.complex_unit_dip, 10, getresources().getdisplaymetrics()));
break;
case r.styleable.customcicleview_bordercolor:
mbordercolor = a.getcolor(attr, bordercolor);
break;
case r.styleable.customcicleview_bgcolor:
mbgcolor = a.getcolor(attr, bgcolor);
break;
}
}
a.recycle();
bgpaint = new paint();
borderpaint = new paint();
linepaint = new paint();
textpaint = new paint();
textrect = new rect();
textpaint.settextsize(mtextsize);
}
//exactly :在准确的数值和match_parent的状态是这个值 列表中，wrap_content的状态下必须计算一个合适的值
@override
protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {
super.onmeasure(widthmeasurespec, heightmeasurespec);
int w = 0;
int h =0;
int widthmode=measurespec.getmode(widthmeasurespec);
int heightmode=measurespec.getmode(heightmeasurespec);
int widthsize = measurespec.getsize(widthmeasurespec);
int heightsize = measurespec.getsize(heightmeasurespec);
if(widthmode==measurespec.exactly){
w=widthsize;
}else{
w=math.max(mheight,mradius+getpaddingright()+getpaddingleft());
}
if(heightmode==measurespec.exactly){
h=heightsize;
}else{
h=math.max(mheight,mradius+getpaddingtop()+getpaddingbottom());
}
setmeasureddimension(w,h);
}
@override
protected void ondraw(canvas canvas) {
super.ondraw(canvas);
int centrex = getwidth()/ 2; // 获取圆心的x坐标
int centrey=getheight()/2;
//半径比较
mborderwidth =(mborderwidth>=mradius/10)?(mradius/10):mborderwidth;//半径的1/5
int radius = mradius/2 - mborderwidth / 2;// 半径
if(mlineheight<=0){
mlineheight=math.abs(getheight()/2-radius);//这个地方要判断设置正负
}
//绘制圆
bgpaint.setantialias(true); // 消除锯齿
bgpaint.setcolor(mbgcolor);
bgpaint.setstyle(paint.style.fill); // 设置实心
canvas.drawcircle(centrex, centrey, radius, bgpaint);
//绘制圆环
borderpaint.setstrokewidth(mborderwidth); // 设置圆环的宽度
borderpaint.setantialias(true); // 消除锯齿
if (mbordercolor != 0) {
borderpaint.setcolor(mbordercolor);
} else {
borderpaint.setcolor(bordercolor);
}
borderpaint.setstyle(paint.style.stroke); // 设置实心
canvas.drawcircle(centrex,centrey, radius - mborderwidth / 2+mlinewidth/2, borderpaint);
//绘制文本
textpaint.settextsize(mtextsize);
textpaint.setcolor(mtextcolor);
textpaint.gettextbounds(mtexttitle, 0, mtexttitle.length(), textrect);
canvas.drawtext(mtexttitle, centrex -textrect.width()/2-mborderwidth/2, centrey + textrect.height() / 2, textpaint);
//绘制线条
drawlineall(canvas,centrex,centrey,radius);
}
//上下都绘制不用
//1 上方 0 下方 2 上下两个
private void drawlineall(canvas canvas, float centrex, float centrey,int radius) {
if(linelocation==-1){
linepaint.setcolor(bordercolor);
linepaint.setstrokewidth(mlinewidth);
canvas.drawline(centrex, 0, centrex, centrey-radius, linepaint);//上方的
canvas.drawline(centrex, centrey+radius, centrex, getheight(), linepaint);//下方的
}else{
//这个可以绘制不同的line
linepaint.setcolor(linecolr);
linepaint.setstrokewidth(mlinewidth);
if (linelocation == 0) {
canvas.drawline(centrex, centrey+radius, centrex, getheight(), linepaint);
} else if (linelocation == 1) {
canvas.drawline(centrex, 0, centrex, centrey -radius , linepaint);
} else if (linelocation == 2) {
canvas.drawline(centrex, centrey+radius, centrex, getheight(), linepaint);
canvas.drawline(centrex, 0, centrex, centrey -radius , linepaint);
}
}
}其他代码和之前文章一样就不贴了，但是还有一个问题就是，这个控件是放在一个列表里面的，你在适配器中使用的时候布局要是wrap的状态下要计算一个合适的高度，比如listview 的item的高度。这里我没有实现，还是在match和固定高度中，后期更改。
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萬仟网。
版权声明：34楼发布
