我写写使用步骤

自定义view(CircleProgress )的代码

package com.hysmarthotel.view;

import com.hysmarthotel.roomcontrol.R;

import com.hysmarthotel.util.EaseInOutCubicInterpolator;

import android.animation.TimeInterpolator;

import android.content.Context;

import android.content.res.TypedArray;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.graphics.Point;

import android.util.AttributeSet;

import android.view.View;

import android.view.animation.AnimationUtils;

public class CircleProgress extends View {

private static final int RED = 0xFFE5282C;

private static final int YELLOW = 0xFF1F909A;

private static final int BLUE = 0xFFFC9E12;

private static final int COLOR_NUM = 3;

private int[] COLORS;

private TimeInterpolator mInterpolator = new EaseInOutCubicInterpolator();

private final double DEGREE = Math.PI / 180;

private Paint mPaint;

private int mViewSize;

private int mPointRadius;

private long mStartTime;

private long mPlayTime;

private boolean mStartAnim = false;

private Point mCenter = new Point();

private ArcPoint[] mArcPoint;

private static final int POINT_NUM = 15;

private static final int DELTA_ANGLE = 360 / POINT_NUM;

private long mDuration = 3600;

public CircleProgress(Context context) {

super(context);

init(null, 0);

}

public CircleProgress(Context context, AttributeSet attrs) {

super(context, attrs);

init(attrs, 0);

}

public CircleProgress(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

init(attrs, defStyle);

}

private void init(AttributeSet attrs, int defStyle) {

mArcPoint = new ArcPoint[POINT_NUM];

mPaint = new Paint();

mPaint.setAntiAlias(true);

mPaint.setStyle(Paint.Style.FILL);

TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.CircleProgress, defStyle, 0);

int color1 = a.getColor(R.styleable.CircleProgress_color1, RED);

int color2 = a.getColor(R.styleable.CircleProgress_color2, YELLOW);

int color3 = a.getColor(R.styleable.CircleProgress_color3, BLUE);

a.recycle();

COLORS = new int[]{color1, color2, color3};

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

int defaultSize = getResources().getDimensionPixelSize(R.dimen.default_circle_view_size);

int width = getDefaultSize(defaultSize, widthMeasureSpec);

int height = getDefaultSize(defaultSize, heightMeasureSpec);

mViewSize = Math.min(width, height);

setMeasuredDimension(mViewSize, mViewSize);

mCenter.set(mViewSize / 2, mViewSize / 2);

calPoints(1.0f);

}

@Override

protected void onDraw(Canvas canvas) {

canvas.save();

canvas.translate(mCenter.x, mCenter.y);

float factor = getFactor();

canvas.rotate(36 * factor);

float x, y;

for (int i = 0; i < POINT_NUM; ++i) {

mPaint.setColor(mArcPoint[i].color);

float itemFactor = getItemFactor(i, factor);

x = mArcPoint[i].x - 2 * mArcPoint[i].x * itemFactor;

y = mArcPoint[i].y - 2 * mArcPoint[i].y * itemFactor;

canvas.drawCircle(x, y, mPointRadius, mPaint);

}

canvas.restore();

if (mStartAnim) {

postInvalidate();

}

}

private void calPoints(float factor) {

int radius = (int) (mViewSize / 3 * factor);

mPointRadius = radius / 12;

for (int i = 0; i < POINT_NUM; ++i) {

float x = radius * -(float) Math.sin(DEGREE * DELTA_ANGLE * i);

float y = radius * -(float) Math.cos(DEGREE * DELTA_ANGLE * i);

ArcPoint point = new ArcPoint(x, y, COLORS[i % COLOR_NUM]);

mArcPoint[i] = point;

}

}

private float getFactor() {

if (mStartAnim) {

mPlayTime = AnimationUtils.currentAnimationTimeMillis() - mStartTime;

}

float factor = mPlayTime / (float) mDuration;

return factor % 1f;

}

private float getItemFactor(int index, float factor) {

float itemFactor = (factor - 0.66f / POINT_NUM * index) * 3;

if (itemFactor < 0f) {

itemFactor = 0f;

} else if (itemFactor > 1f) {

itemFactor = 1f;

}

return mInterpolator.getInterpolation(itemFactor);

}

public void startAnim() {

mPlayTime = mPlayTime % mDuration;

mStartTime = AnimationUtils.currentAnimationTimeMillis() - mPlayTime;

mStartAnim = true;

postInvalidate();

}

public void reset() {

stopAnim();

mPlayTime = 0;

postInvalidate();

}

public void stopAnim() {

mStartAnim = false;

}

public void setInterpolator(TimeInterpolator interpolator) {

mInterpolator = interpolator;

}

public void setDuration(long duration) {

mDuration = duration;

}

public void setRadius(float factor) {

stopAnim();

calPoints(factor);

startAnim();

}

static class ArcPoint {

float x;

float y;

int color;

ArcPoint(float x, float y, int color) {

this.x = x;

this.y = y;

this.color = color;

}

}

}

EaseInOutCubicInterpolator是自定义view(CircleProgress )中要是用的一个工具

package com.hysmarthotel.util;

import android.animation.TimeInterpolator;

public class EaseInOutCubicInterpolator implements TimeInterpolator {

@Override

public float getInterpolation(float input) {

if ((input *= 2) < 1.0f) {

return 0.5f * input * input * input;

}

input -= 2;

return 0.5f * input * input * input + 1;

}

}

在activity中的调用(还有一些其他用法可以自己看看github上的源代码)

mProgressView = (CircleProgress)findViewById(R.id.progress_vie);

mProgressView.startAnim(); //开始

mProgressView.stopAnim(); //结束

mProgressView.setRadius(factor); //半径

mProgressView.reset(); //复原

在xml文件中的布局

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:circleprogress="http://schemas.android.com/apk/res/com.hysmarthotel.roomcontrol" //这个地方记得要加 //包名

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="@drawable/bg1" >

android:id="@+id/progress_vie"

android:layout_x="350.5px"

android:layout_y="150.0px"

android:layout_width="1140.0px"

android:layout_height="700.0px"

circleprogress:color1="@android:color/holo_red_light" //这些参数就是通过xmlns:circleprogress，和attrs文件相关联的 　　　　circleprogress:color2="@android:color/holo_green_light" 　　　　circleprogress:color3="@android:color/holo_blue_light" />

自己在values目录中新建的attrs文件，这是与自定义view中自定义参数相关的

自己在values目录中新建的dimens文件，这个只是几个颜色参数

16dp

16dp

200dp

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。