Canvas 绘制安卓机器人

话不多说，先上照片

MainActivity.class

package com.jsjrjsb1504.sdut.gesture;

import android.content.Context;
import android.graphics.*;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.*;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        FrameLayout mFrameLayout = findViewById(R.id.framelayout);
        //将当前的布局和内部类相关联
        mFrameLayout.addView(new Myview(this));
    }
    //内部类用于绘画
    public class Myview extends View{

        public Myview(Context context) {
            super(context);
        }

        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);
            //创建一支画笔
            Paint paint = new Paint();
            paint.setColor(Color.GREEN);
            paint.setAntiAlias(true);
            //设置画笔粗细
            paint.setStrokeWidth(2);
            //设置是否为空心
            paint.setStyle(Paint.Style.FILL_AND_STROKE);

            //绘制头部
            RectF mRectF_head = new RectF(110,110,canvas.getHeight()/2,canvas.getHeight()/2);
            mRectF_head.offset(100,10);
            canvas.drawArc(mRectF_head,-10,-160,false,paint);

            //天线
            paint.setColor(Color.GREEN);
            paint.setStrokeWidth(10);
            canvas.drawLine(220,115,435,300,paint);

            canvas.drawLine(900,115,685,300,paint);

            //眼睛
            paint.setColor(Color.WHITE);
            paint.setStrokeWidth(20);
            canvas.drawCircle(700,300,4,paint);
            canvas.drawCircle(400,300,4,paint);




            paint.setStrokeWidth(2);
            paint.setColor(Color.GREEN);

            //身体
            canvas.drawRect(220,450,885,900,paint);
            RectF rextf_body = new RectF(220,800,885,1200);
            canvas.drawRoundRect(rextf_body,50,50,paint);
            //胳膊
            RectF rectF_arm = new RectF(100,430,200,1000);
            canvas.drawRoundRect(rectF_arm,180,180,paint);
            rectF_arm.offset(805,0);
            canvas.drawRoundRect(rectF_arm,180,180,paint);



            //dialog
            paint.setColor(Color.BLACK);
            paint.setTextSize(30);
            paint.setTextAlign(Paint.Align.CENTER); //字体居中
            canvas.drawText("你是真牛逼",950,250,paint);

            //腿
            paint.setColor(Color.GREEN);
            RectF rectF_foot = new RectF(400,1100,500,1500);
            canvas.drawRoundRect(rectF_foot,180,180,paint);
            rectF_foot.offset(200,0);
            canvas.drawRoundRect(rectF_foot,180,180,paint);


        }
    }

}

activity_main.xml
这里只有一点需要注意，布局是帧布局—-FramLayout

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    android:id="@+id/framelayout"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"

    ></FrameLayout>

方法二，自适应

Main2Activity.java

package com.jsjrjsb1504.sdut.gesture;

import android.content.Context;
import android.graphics.*;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.*;

public class Main2Activity extends AppCompatActivity {

    float rationpieceOfWidth = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        FrameLayout mFrameLayout = findViewById(R.id.framelayout);
        //将当前的布局和内部类相关联
        mFrameLayout.addView(new Myview(this));
    }

    //内部类用于绘画
    public class Myview extends View {

//        //自定义测量
//        @Override
//        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//            int widthSize = MeasureSpec.getSize(widthMeasureSpec);
//            int widthMode = MeasureSpec.getMode(widthMeasureSpec);
//
//            int heightSize = MeasureSpec.getSize(heightMeasureSpec);
//            int heightMode = MeasureSpec.getMode(heightMeasureSpec);
//
//            int width = Math.min(heightSize, widthSize);
//
//            if (widthMode == MeasureSpec.UNSPECIFIED) {
//                width = heightSize;
//            } else if (heightMode == MeasureSpec.UNSPECIFIED) {
//                width = widthSize;
//            }
//            rationpieceOfWidth = width;
//
//            setMeasuredDimension(width, width);
//        }



        public Myview(Context context) {

            super(context);
        }

        @Override
        protected void onDraw(Canvas canvas) {
            rationpieceOfWidth = canvas.getWidth();
            super.onDraw(canvas);
            //创建一支画笔
            Paint paint = new Paint();
            paint.setColor(Color.GREEN);
            paint.setAntiAlias(true);
            //设置画笔粗细
            paint.setStrokeWidth(2);
            //设置是否为空心
            paint.setStyle(Paint.Style.FILL_AND_STROKE);

            //绘制头部
            RectF mRectF_head = new RectF(rationpieceOfWidth / 4, rationpieceOfWidth / 8, rationpieceOfWidth / 4 + rationpieceOfWidth / 2, rationpieceOfWidth / 8 + rationpieceOfWidth / 2);

            canvas.drawArc(mRectF_head, -10, -160, false, paint); //顺时针旋转


            //天线
            paint.setColor(Color.GREEN);
            paint.setStrokeWidth(10);
            canvas.drawLine(rationpieceOfWidth / 4, 0, (rationpieceOfWidth / 4 + rationpieceOfWidth / 2) * 2 / 3, (rationpieceOfWidth / 2) * 2 / 3, paint);
            canvas.drawLine(rationpieceOfWidth / 4 + rationpieceOfWidth / 2, 0, (rationpieceOfWidth / 4 + rationpieceOfWidth / 2) * 2 / 3, (rationpieceOfWidth / 2) * 2 / 3, paint);


//            //眼睛
            paint.setColor(Color.WHITE);
            paint.setStrokeWidth(20);

            canvas.drawCircle(rationpieceOfWidth * 3 / 8, rationpieceOfWidth / 4, 4, paint);
            canvas.drawCircle(rationpieceOfWidth * 5 / 8, rationpieceOfWidth / 4, 4, paint);


            paint.setStrokeWidth(2);
            paint.setColor(Color.GREEN);

            //身体
            canvas.drawRect(rationpieceOfWidth / 4,
                    rationpieceOfWidth / 3 + rationpieceOfWidth / 20,
                    rationpieceOfWidth / 4 + rationpieceOfWidth / 2,
                    rationpieceOfWidth * 5 / 7, paint);
            RectF rextf_body = new RectF(rationpieceOfWidth / 4, rationpieceOfWidth / 3 + rationpieceOfWidth / 10, rationpieceOfWidth / 4 + rationpieceOfWidth / 2, rationpieceOfWidth);
            canvas.drawRoundRect(rextf_body, 50, 50, paint);
            //胳膊
            RectF rectF_arm = new RectF(rationpieceOfWidth / 5 - rationpieceOfWidth / 15,
                    rationpieceOfWidth / 3,
                    rationpieceOfWidth / 4-rationpieceOfWidth/50 ,
                    rationpieceOfWidth * 5 / 7);

            canvas.drawRoundRect(rectF_arm, 180, 180, paint);
            rectF_arm.offset(rationpieceOfWidth/2+rationpieceOfWidth/5-rationpieceOfWidth/15,0);
            canvas.drawRoundRect(rectF_arm,180,180,paint);
//
//
//
            //dialog
            paint.setColor(Color.BLACK);
            paint.setTextSize(30);
            paint.setTextAlign(Paint.Align.CENTER); //字体居中
            canvas.drawText("你是真牛逼",950,250,paint);
//
            //腿
            paint.setColor(Color.GREEN);
            RectF rectF_foot = new RectF(rationpieceOfWidth/3,rationpieceOfWidth-rationpieceOfWidth/20,rationpieceOfWidth/3+rationpieceOfWidth/10,rationpieceOfWidth+rationpieceOfWidth/3);
            canvas.drawRoundRect(rectF_foot,180,180,paint);
            rectF_foot.offset(rationpieceOfWidth/4,0);
            canvas.drawRoundRect(rectF_foot,180,180,paint);


        }
    }

}