自定义View android 像支付宝支付界面的progress
16lz
2021-12-04
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); }}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<?xml version="1.0" encoding="utf-8"?> //画笔的颜色 //宽度 //刷新的频率 <?xml version="1.0" encoding="utf-8"?> 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); }}更多相关文章
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