package com.xxx.widgets;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;
import com.sito.ioammcpv2.R;
/**
* Created by Yangzb on 2018/6/14 10:39
* E-mail:[email protected]
* Decsribe:
*/
public class CustomCircleView extends View {
private static final String TAG = CustomCircleView.class.getSimpleName();
/**
* 文本
*/
private String titleText ;
/**
* 字体颜色
*/
private int titleColor = Color.BLACK ;
/**
* 背景颜色,设置默认颜色
*/
private int backColor = Color.GRAY;
/**
* 色值
*/
private int titleSize ;
/**
*控制文本的范围
*/
private Rect mBound;
private Paint mPaint;
public CustomCircleView(Context context) {
this(context, null);
}
public CustomCircleView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, 0);
}
public CustomCircleView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
TypedArray a= context.getTheme().obtainStyledAttributes(attrs, R.styleable.CustomCircleView,defStyleAttr,0);
/**
* 这个获得是你实际在layout中设置的属性个数
*/
int n = a.getIndexCount();
for(int i = 0;i<n;i++)
{
int attr = a.getIndex(i);
switch (attr)
{
case R.styleable.CustomCircleView_titleText:
titleText = a.getString(attr);
break;
case R.styleable.CustomCircleView_titleTextColor:
titleColor = a.getColor(attr, Color.BLACK);
break;
case R.styleable.CustomCircleView_backColor:
backColor = a.getColor(attr,Color.GREEN);
break;
case R.styleable.CustomCircleView_titleTextSize:
titleSize = a.getDimensionPixelSize(attr,(int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_SP, 16, getResources().getDisplayMetrics()));
break;
}
}
a.recycle();
mPaint = new Paint();
mPaint.setTextSize(titleSize);
mBound = new Rect();
/**
* 获得绘制文本的宽和高
*/
mPaint.getTextBounds(titleText, 0, titleText.length(), mBound);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
//Log.e(TAG,"onDraw");
//圆的半径
int r = Math.min(getMeasuredWidth() / 2,getMeasuredHeight()/2);
//圆心的横坐标
int centerX =r;
//圆心的纵坐标
int centerY =r;
Paint paint = new Paint();
paint.setColor(Color.GREEN);
mPaint.setColor(backColor);
//绘制圆
canvas.drawCircle(centerX, centerY, r, mPaint);
mPaint.setColor(titleColor);
//绘制Text 解决文字布局中 向左偏移4dp
canvas.drawText(titleText, getWidth() / 2 - mBound.width() / 2-4, getHeight() / 2 + mBound.height() / 2, mPaint);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//Log.e(TAG,"onMeasure");
int width = getMySize(100,widthMeasureSpec);
int height = getMySize(100,heightMeasureSpec);
setMeasuredDimension(width, height);
}
/**
* 计算相应的宽高
* @param defaultSize 默认值
* @param measureSpec
* @return
*/
private int getMySize(int defaultSize, int measureSpec) {
int mySize = defaultSize;
int mode = MeasureSpec.getMode(measureSpec);
int size = MeasureSpec.getSize(measureSpec);
switch (mode) {
case MeasureSpec.UNSPECIFIED: {//如果没有指定大小,就设置为默认大小
mySize = defaultSize;
break;
}
case MeasureSpec.AT_MOST: {//如果测量模式是最大取值为size
//我们将自己计算View的大小
mPaint.setTextSize(titleSize);
mPaint.getTextBounds(titleText, 0, titleText.length(), mBound);
float textWidth = mBound.width();
int desired = (int) (getPaddingLeft() + textWidth + getPaddingRight());
mySize = desired;
break;
}
case MeasureSpec.EXACTLY: {//如果是固定的大小,那就不要去改变它
mySize = size;
break;
}
}
return mySize;
}
public void setTitleText(String str)
{
titleText = str ;
invalidate();
}
public void setTitleColor(int titleColor) {
this.titleColor = titleColor;
}
public void setBackColor(int backColor) {
this.backColor = backColor;
}
}
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转载自blog.csdn.net/yangzongbin/article/details/80908886
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