自定义控件

太极

package bwie.com.zidongyi.view;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;

/**
 * Created by lenovo on 2017/12/27.
 */

public class TaiJi extends View{

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

    public TaiJi(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public TaiJi(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        Paint paint = new Paint();
        paint.setAntiAlias(true);
        paint.setStrokeWidth(5);
        paint.setStyle(Paint.Style.FILL);
        RectF leftRectF = new RectF(100, 100, 500, 500);
        paint.setColor(Color.WHITE);
        canvas.drawArc(leftRectF, 90, 180, false, paint);

        paint.setStyle(Paint.Style.STROKE);
        paint.setColor(Color.BLACK);
        canvas.drawArc(leftRectF, 90, 180, false, paint);



        paint.setColor(Color.BLACK);
        paint.setStyle(Paint.Style.FILL_AND_STROKE);
        RectF rightRectF = new RectF(100, 100, 500, 500);
        canvas.drawArc(rightRectF, -90, 180, false, paint);

        RectF upRectF = new RectF(200, 100, 400, 300);
        canvas.drawArc(upRectF, 90, 180, false, paint);

        paint.setColor(Color.WHITE);
        RectF downRectF = new RectF(200, 300, 400, 500);
        canvas.drawArc(downRectF, -90, 180, false, paint);

        paint.setColor(Color.BLACK);
        paint.setStyle(Paint.Style.STROKE);
        canvas.drawArc(downRectF, -90, 180, false, paint);

        paint.setStyle(Paint.Style.FILL);
        paint.setColor(Color.WHITE);
        canvas.drawCircle(300, 200, 20, paint);

        paint.setColor(Color.BLACK);
        canvas.drawCircle(300, 400, 20, paint);

    }
}

五角星

package bwie.com.zidongyi.view;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;

/**
 * Created by lenovo on 2017/12/27.
 */

public class WuJiaoXing extends View{

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

    public WuJiaoXing(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public WuJiaoXing(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        Paint paint = new Paint();
        paint.setColor(Color.YELLOW);
        paint.setStrokeWidth(1);
        Path path = new Path();
        path.moveTo(103,49);
        path.lineTo(141,164);//第一个脚 最上面的
        path.lineTo(43,92);//第二个脚  右下角的
        path.lineTo(164,92);//第三个脚  左面的
        path.lineTo(66,164);//第四个脚   右面的
        path.lineTo(103,49);//第五个脚  左下的
        canvas.drawPath(path,paint);
    }
}

五星红旗

package bwie.com.zidongyi.view;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;

/**
 * Created by lenovo on 2017/12/27.
 */

public class WuXingHongQi extends View{
    public WuXingHongQi(Context context) {
        super(context);
    }

    public WuXingHongQi(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public WuXingHongQi(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);


        //定义画笔
        Paint paint = new Paint();
        paint.setColor(Color.YELLOW);
        paint.setStrokeWidth(1);//线的宽度
        //定义路径
        Path path = new Path();
        //最大的星星
        path.moveTo(103,49);
        path.lineTo(141,164);//第一个脚 最上面的
        path.lineTo(43,92);//第二个脚  右下角的
        path.lineTo(164,92);//第三个脚  左面的
        path.lineTo(66,164);//第四个脚   右面的
        path.lineTo(103,49);//第五个脚  左下的
        canvas.drawPath(path,paint);
        //第一个小星星
        path.moveTo(186,61);
        path.lineTo(216,26);
        path.lineTo(214,72);
        path.lineTo(189,33);
        path.lineTo(231,50);
        path.lineTo(186,61);
        canvas.drawPath(path,paint);
        //第二个小星星
        path.moveTo(228,96);
        path.lineTo(269,76);
        path.lineTo(247,117);
        path.lineTo(241,71);
        path.lineTo(273,104);
        path.lineTo(244,99);
        canvas.drawPath(path,paint);
        //第三个小星星
        path.moveTo(224,148);
        path.lineTo(273,148);
        path.lineTo(236,175);
        path.lineTo(249,131);
        path.lineTo(265,175);
        path.lineTo(224,148);
        canvas.drawPath(path,paint);
        //第四个小星星
        path.moveTo(189,182);
        path.lineTo(231,199);
        path.lineTo(186,211);
        path.lineTo(216,175);
        path.lineTo(213,221);
        path.lineTo(189,182);
        canvas.drawPath(path,paint);

    }
}

触摸移动

package bwie.com.zidongyi.view;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;

/**
 * Created by lenovo on 2017/12/27.
 */

public class YiDong extends View {
    private float cx = 100;
    private float cy = 100;
    public YiDong(Context context) {
        super(context);
    }

    public YiDong(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public YiDong(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }


    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        Paint paint = new Paint();
        paint.setColor(Color.RED);
        paint.setAntiAlias(true);
        paint.setStyle(Paint.Style.FILL);

        canvas.drawCircle(cx,cy,100,paint);

    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {

        switch (event.getAction()){
            case MotionEvent.ACTION_DOWN://按下
                cx = event.getX();
                cy = event.getY();

                break;
            case MotionEvent.ACTION_MOVE://移动
                cx = event.getX();
                cy = event.getY();

                break;
            case MotionEvent.ACTION_UP://抬起
                cx = event.getX();
                cy = event.getY();

                break;
        }

        //需要重新绘制一下图形
        //invalidate();//但是只能在主线程进行图形的绘制
        postInvalidate();//主线程和子线程都可以....调用这两个方法的时候,会自动调用onDraw方法

        //触摸事件自己处理
        return true;
    }
}