Android实现简单实用的垂直进度条
本文实例为大家分享了android实现简单垂直进度条的具体代码，供大家参考，具体内容如下
代码注释特别清晰，就不多解释了
支持属性：
- progress_radius 进度条圆角大小
- progress_border_enable 进度条是否有边框
- progress_gradient_enable 进度条颜色是否渐变
- progress_start_color 从上到下进度条开始的渐变色
- progress_end_color 从上到下进度条结束的渐变色
- progress_solid_color 带边框进度条的背景填充色
- progress_border_color 进度条边框的颜色
- progress_border_width 进度条边框的宽度
有需要定义其他属性的，可以进行扩充下面是效果图
上代码
verticalprogress
public class verticalprogress extends view {
//进度条圆角
private int mradius;
//进度条是否有边框
private boolean mborderenable;
//是否有渐变色
private boolean mgradientenable;
//渐变色
private int mstartresid;
private int mendresid;
//边框的颜色
private int mbordercolorresid;
//进度条背景填充色
private int mprogressbgcolorid;
//边框宽度
private int mborderwidth;
private int mprogress = 10;
private int max = 100;
private int mwidth;
private int mheight;
private rectf mrectf;
private paint mpaint;
public verticalprogress(context context) {
super(context);
init(context, null);
}
public verticalprogress(context context, @nullable attributeset attrs) {
super(context, attrs);
init(context, attrs);
}
@override
protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {
super.onmeasure(widthmeasurespec, heightmeasurespec);
mwidth = getmeasuredwidth() - 1;// 宽度值
mheight = getmeasuredheight() - 1;// 高度值
}
private void init(context context, attributeset attrs) {
typedarray typedarray = null;
if (attrs != null) {
typedarray = context.obtainstyledattributes(attrs, r.styleable.verticalprogress);
mradius = typedarray.getint(r.styleable.verticalprogress_progress_radius, 0);
mborderenable = typedarray.getboolean(r.styleable.verticalprogress_progress_border_enable, false);
mgradientenable = typedarray.getboolean(r.styleable.verticalprogress_progress_gradient_enable, true);
mstartresid = typedarray.getresourceid(r.styleable.verticalprogress_progress_start_color, r.color.colorprimary);
mprogressbgcolorid = typedarray.getresourceid(r.styleable.verticalprogress_progress_solid_color, r.color.white);
mendresid = typedarray.getresourceid(r.styleable.verticalprogress_progress_end_color, r.color.color_4ea6fd);
mbordercolorresid = typedarray.getresourceid(r.styleable.verticalprogress_progress_border_color, r.color.color_4ea6fd);
mborderwidth = typedarray.getresourceid(r.styleable.verticalprogress_progress_border_width, 10);
}
if (typedarray != null) {
typedarray.recycle();
}
mrectf = new rectf();
mpaint = new paint();
mpaint.setantialias(true);
}
@suppresslint("drawallocation")
@override
protected void ondraw(canvas canvas) {
super.ondraw(canvas);
if (mradius == 0) {
//弧度为高度的一半
mradius = mwidth / 2;
}
if (mborderenable) {
//第一层矩形(描边层)
mrectf.set(0, 0, mwidth, mheight);
//第一层矩形颜色(进度条描边的颜色)
mpaint.setcolor(getresources().getcolor(mbordercolorresid));
//画第一层圆角矩形
canvas.drawroundrect(mrectf, mradius, mradius, mpaint);
//第二层矩形颜色(背景层颜色)
mpaint.setcolor(getresources().getcolor(mprogressbgcolorid));
//第二层矩形(背景层)
mrectf.set(mborderwidth, mborderwidth, mwidth - mborderwidth, mheight - mborderwidth);
//画背景层圆角矩形(盖在描边层之上)
canvas.drawroundrect(mrectf, mradius, mradius, mpaint);
}
if (mprogress == 0)//进度为 0不画进度
return;
float section = mprogress / max;
//进度层底层
mrectf.set(+8, mheight - mprogress / 100f * mheight + 10, mwidth - 8, mheight - 8);
if (mgradientenable) {
//渐变器
lineargradient shader = new lineargradient(0, 0, mwidth * section, mheight,
getresources().getcolor(mstartresid), getresources().getcolor(mendresid), shader.tilemode.clamp);
//第三层矩形颜色(进度渐变色)
mpaint.setshader(shader);
}
//画第三层(进度层)圆角矩形(盖在背景层之上)
canvas.drawroundrect(mrectf, mradius, mradius, mpaint);
//清除之前传递的shader
mpaint.setshader(null);
}
public void setprogress(int currentcount) {
this.mprogress = currentcount > max ? max : currentcount;
postinvalidate();
}
}attr.xml样式
<declare-styleable name="verticalprogress"> <attr name="progress_radius" format="dimension" /> <attr name="progress_border_width" format="dimension" /> <attr name="progress_gradient_enable" format="boolean" /> <attr name="progress_border_enable" format="boolean" /> <attr name="progress_start_color" format="color" /> <attr name="progress_solid_color" format="color" /> <attr name="progress_end_color" format="color" /> <attr name="progress_border_color" format="boolean" /> </declare-styleable>
最后调用示例
<com.widget.verticalprogress android:id="@+id/vp_progress" android:layout_width="20dp" android:layout_height="match_parent" app:progress_border_enable="true" app:progress_solid_color="@color/white" android:layout_centerinparent="true" />
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