beifencode

package com.hesheng.myapplication;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.widget.ImageView;

/**
 * Created by wangchaomac on 2017/11/27.
 */
public class CenterImage extends ImageView {
    private Paint paint;
    private boolean isCenterImgShow;
    private Bitmap bitmap;
    public void setCenterImgShow(boolean centerImgShow) {
        isCenterImgShow = centerImgShow;
        if (isCenterImgShow) {
            bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
            invalidate();
        }
    }
    public CenterImage(Context context) {
        super(context);
        init();
    }
    public CenterImage(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }
    public CenterImage(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }
    private void init() {
        paint = new Paint();
    }
    private boolean isInit = false;
    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        if ( bitmap != null) {

            Paint paint2 = new Paint();
            paint2.setStyle(Paint.Style.FILL);
            paint2.setColor(Color.RED);
            canvas.drawCircle(  getMeasuredWidth()/2 , 20 ,10, paint2);
            canvas.drawBitmap(bitmap, getMeasuredWidth() / 2 - bitmap.getWidth() / 2, getMeasuredHeight() / 2 - bitmap.getHeight() / 2, paint);
            Paint paint3 = new Paint();
            paint3.setStyle(Paint.Style.FILL);
            paint3.setColor(Color.BLACK);
            if(isInit){
                canvas.drawCircle(  getMeasuredWidth()/2+50, getMeasuredHeight()-20   ,10, paint3);
                isInit = false;
                return;
            }

            canvas.drawCircle(  getMeasuredWidth()/2 , getMeasuredHeight()-20,10, paint3);
        }
    }
}