Android自定义带动画的半圆环型进度效果

2024-02-18 11:26:03 262
本文实例为大家分享了Android半圆环型进度效果的具体代码，供大家参考，具体内容如下
packagecom.newair.ondrawtext;

importandroid.animation.ValueAnimator;
importandroid.annotation.TargetApi;
importandroid.content.Context;
importandroid.content.res.TypedArray;
importandroid.graphics.Canvas;
importandroid.graphics.Color;
importandroid.graphics.Paint;
importandroid.graphics.RectF;
importandroid.graphics.Typeface;
importandroid.os.Build;
importandroid.util.AttributeSet;
importandroid.view.View;
importandroid.view.animation.OvershootInterpolator;

/**
*Createdbyouhimehimeon16/6/15.
*--------自定义控件-------
*/
publicclassCustomViewextendsView{


//画笔
privatePaintpaint;
privateRectFoval;


//圆弧颜色
privateintroundColor;
//进度颜色
privateintprogressColor;
//文字内容
privatebooleantextIsShow;
//字体大小
privatefloattextSize=14;
//文字颜色
privateinttextColor;
//最大进度
privateintmax=1000;
//当前进度
privateintprogress=300;
//圆弧宽度
privateintroundWidth=30;

privateintviewWidth;//宽度--控件所占区域

privatefloatnowPro=0;//用于动画

privateValueAnimatoranimator;

publicCustomView(Contextcontext){
super(context);
}

publicCustomView(Contextcontext,AttributeSetattrs){
super(context,attrs);
initAttrs(attrs,context);
}

publicCustomView(Contextcontext,AttributeSetattrs,intdefStyleAttr){
super(context,attrs,defStyleAttr);
initAttrs(attrs,context);
}

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
publicCustomView(Contextcontext,AttributeSetattrs,intdefStyleAttr,intdefStyleRes){
super(context,attrs,defStyleAttr,defStyleRes);
initAttrs(attrs,context);
}


privatevoidinitAttrs(AttributeSetattr,Contextcontext){
TypedArrayarray=context.obtainStyledAttributes(attr,R.styleable.CustomView);


roundColor=array.getColor(R.styleable.CustomView_roundColor,Color.BLACK);//环形颜色
progressColor=array.getColor(R.styleable.CustomView_progressColor,Color.RED);//进度颜色
textIsShow=array.getBoolean(R.styleable.CustomView_textIsShow,false);//文字
textSize=array.getDimension(R.styleable.CustomView_textSize,14);//文字大小
textColor=array.getColor(R.styleable.CustomView_textColor,Color.BLACK);//文字颜色
roundWidth=array.getInt(R.styleable.CustomView_roundWidth,30);//圆环宽度

array.recycle();

//动画
animator=ValueAnimator.ofFloat(0,progress);
animator.setDuration(1800);
animator.setInterpolator(newOvershootInterpolator());
animator.addUpdateListener(newValueAnimator.AnimatorUpdateListener(){
@Override
publicvoidonAnimationUpdate(ValueAnimatoranimation){
nowPro=(float)animation.getAnimatedValue();
postInvalidate();
}
});
animator.start();

}

@Override
protectedvoidonMeasure(intwidthMeasureSpec,intheightMeasureSpec){

finalintwidthSpecMode=MeasureSpec.getMode(widthMeasureSpec);
finalintwidthSpecSize=MeasureSpec.getSize(widthMeasureSpec);

if(widthSpecMode==MeasureSpec.AT_MOST){//可获得最大空间
setMeasuredDimension(widthMeasureSpec,(widthSpecSize/2)+(int)(Math.cos(20)*(widthSpecSize/2)));
}elseif(widthMeasureSpec==MeasureSpec.EXACTLY){//一般指精确值
setMeasuredDimension(widthMeasureSpec,(widthSpecSize/2)+(int)(Math.cos(20)*(widthSpecSize/2)));
}else{
setMeasuredDimension(widthMeasureSpec,(viewWidth/2)+(int)(Math.cos(20)*(viewWidth/2)));
}
}

@Override
protectedvoidonSizeChanged(intw,inth,intoldw,intoldh){
super.onSizeChanged(w,h,oldw,oldh);

viewWidth=w;//得到宽度以此来计算控件所占实际大小

//计算画布所占区域
oval=newRectF();
oval.left=roundWidth+getPaddingLeft();
oval.top=roundWidth+getPaddingTop();
oval.right=viewWidth-roundWidth-getPaddingRight();
oval.bottom=viewWidth-roundWidth-getPaddingBottom();

}


@Override
protectedvoidonDraw(Canvascanvas){
super.onDraw(canvas);

Paintpaint=newPaint();
paint.setAntiAlias(true);//设置画笔为无锯齿
paint.setColor(roundColor);//设置画笔颜色
paint.setStrokeWidth(roundWidth);//线宽
paint.setStyle(Paint.Style.STROKE);//空心
canvas.drawArc(oval,160,220,false,paint);//绘制圆弧

//画进度层
paint.setColor(progressColor);
paint.setStrokeWidth(roundWidth+1);
canvas.drawArc(oval,160,220*nowPro/max,false,paint);//绘制圆弧


if(textIsShow){
paint.setColor(textColor);
paint.setStrokeWidth(0);
paint.setTypeface(Typeface.DEFAULT);
paint.setTextSize(textSize*2);
floattextWidth=paint.measureText((int)((nowPro/(float)max)*100)+"%");
canvas.drawText((int)((nowPro/(float)max)*100)+"%",viewWidth/2-textWidth/2,viewWidth/2,paint);
}

}


privateintgetDefaultHeight(){
return0;
}

privateintgetDefaultWidth(){
return0;
}


publicintgetRoundColor(){
returnroundColor;
}

publicvoidsetRoundColor(introundColor){
this.roundColor=roundColor;
}

publicintgetProgressColor(){
returnprogressColor;
}

publicvoidsetProgressColor(intprogressColor){
this.progressColor=progressColor;
}

publicbooleangetText(){
returntextIsShow;
}

publicvoidsetText(booleantext){
this.textIsShow=text;
}

publicfloatgetTextSize(){
returntextSize;
}

publicvoidsetTextSize(floattextSize){
this.textSize=textSize;
}

publicintgetTextColor(){
returntextColor;
}

publicvoidsetTextColor(inttextColor){
this.textColor=textColor;
}

publicintgetMax(){
returnmax;
}

publicvoidsetMax(intmax){
this.max=max;
}

publicintgetProgress(){
returnprogress;
}

publicvoidsetProgress(intprogress){
this.progress=progress;
}
}
自定义属性
用法
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Android自定义带动画的半圆环型进度效果

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