自定义View android 像支付宝支付界面的progress

成功打钩

失败打X

其主要用于自定义View 的ondraw方法来实现，然后利用 

postInvalidateDelayed(time);来实现刷新动态；

先来看自定义View类：

package com.example.administrator.myapplication.views;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;

import com.example.administrator.myapplication.R;


public class MyView extends View {

    private float width = 5;
    private int color = Color.BLUE;
    //绘制圆弧的进度值
    private int progress = 0;
    //线1的x轴
    private int line1_x = 0;
    //线1的y轴
    private int line1_y = 0;
    //线2的x轴
    private int line2_x = 0;
    //线2的y轴
    private int line2_y = 0;
    private Paint paint;
    private boolean isFish = false;
    private int newI;
    private long time = 5;
    private boolean isSucces = true;

    public MyView(Context context) {
        this(context, null);
    }

    public MyView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public MyView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyView);
        color = typedArray.getColor(R.styleable.MyView_paintColor, color);
        width = typedArray.getFloat(R.styleable.MyView_strokeWidth, width);
        time = (long) typedArray.getFloat(R.styleable.MyView_time, time);
        typedArray.recycle();
        paint = new Paint();
        //设置画笔颜色
        paint.setColor(color);
        //设置圆弧的宽度
        paint.setStrokeWidth(width);
        //设置圆弧为空心
        paint.setStyle(Paint.Style.STROKE);
        //消除锯齿
        paint.setAntiAlias(true);
    }


    public int getProgress() {
        return progress;
    }

    public void setProgress(int progress) {
        this.progress = progress;
    }
//设置颜色
    public void setColor(int color) {
        this.color = color;
    }
//设置宽度
    public void setWidth(float width) {
        this.width = width;
    }

    //设置动画的结束
    public void setFish(boolean fish) {
        isFish = fish;
    }
//设置刷新频率
    public void setTime(long time) {
        this.time = time;
    }
//设置是否成功
    public void setSucces(boolean succes) {
        isSucces = succes;
    }

    //绘制
    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        refresh(canvas);
    }

    private void refresh(Canvas canvas) {
        progress++;
        //获取圆弧形的x坐标
        int center = getWidth() / 2;
        int height = getHeight();
        int lineCenter = center - getWidth() / 5;
        int lineCenter2 = center + getWidth() / 5;
        //圆弧半径
        int radius = getWidth() / 2 - 5;
        //定义的圆弧大小
        RectF rectF = new RectF(center - radius - 1, center - radius - 1, center + radius + 1, center + radius + 1);
        int i = -360 * progress / 100;
        newI = 235;
        if (i != -360) {
            newI = i;
            //根据进度画圆弧
            canvas.drawArc(rectF, newI, newI + 50, false, paint);
        } else {
            if (!isFish) {
                //根据进度画圆弧
                progress = 0;
                canvas.drawArc(rectF, newI, newI + 50, false, paint);

            } else {
                progress = 100;
            }
        }
        if (progress >= 100) {
            if (isSucces) {
                if (line1_x < radius / 3) {
                    line1_x++;
                    line1_y++;
                }
                //画第一根线
                canvas.drawLine(lineCenter, center, lineCenter + line1_x, center + line1_y, paint);

                if (line1_x == radius / 3) {
                    line2_x = line1_x;
                    line2_y = line1_y;
                    line1_x++;
                    line1_y++;
                }
                if (line1_x >= radius / 3 && line2_x <= radius) {
                    line2_x++;
                    line2_y--;
                }
                //画第二根线
                canvas.drawLine(lineCenter + line1_x - 1, center + line1_y, lineCenter + line2_x, center + line2_y, paint);
            } else {
                if (line1_x < radius / 2 + 40) {
                    line1_x++;
                    line1_y++;
                    line2_x++;
                    line2_y++;
                }
                //画第一根线
                canvas.drawLine(lineCenter, height / 3, lineCenter + line1_x, height / 3 + 10 + line1_y, paint);
                canvas.drawLine(lineCenter2, height / 3, lineCenter2 - line2_x, height / 3 + 20 + line2_y, paint);


            }
        }

        //每隔指定毫秒界面刷新
        postInvalidateDelayed(time);
    }

}

当请求网络完成后可以调用：

setFish(boolean fish)  结束旋转动画 
setSucces(boolean succes) 根据回调来设置是否成功
 
   
 
   
setColor(int color) 设置画笔的颜色 也可以在布局中设置
 
   
 来看看属性文件
 
   


    
         //画笔的颜色
        
 
   
         //宽度
        
 
   
           //刷新的频率
        
    
 
   布局文件 
  

MainActivity.java

package com.example.administrator.myapplication;

import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;

import com.example.administrator.myapplication.views.MyView;

public class MainActivity extends AppCompatActivity {

    private MyView myView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myView = (MyView) findViewById(R.id.myView);
        //设置失败
        myView.setSucces(false);

        //模拟请求网络操作
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                myView.setFish(true);
            }
        }, 4000);
    }
}