Android仿小米安全中心檢測(cè)進(jìn)度條效果

更新時(shí)間：2016年10月12日 11:32:28 作者：_deadline

這篇文章主要介紹了Android仿小米安全中心檢測(cè)進(jìn)度條效果,具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

模仿小米安全中心檢測(cè)效果

廢話少說，咱們先上效果圖：

github地址： https://github.com/niniloveyou/GradeProgressView

這個(gè)效果的使用場(chǎng)景并不多，主要是各種檢測(cè)的時(shí)候，比如垃圾清理，手機(jī)安全檢測(cè)，當(dāng)然如果你不嫌棄這個(gè)效果丑，也可以用作進(jìn)度條。哈哈。

下面說點(diǎn)干貨分析下這個(gè)效果怎么實(shí)現(xiàn)：

拿到這個(gè)效果首先想想主要有哪些技術(shù)難點(diǎn)：

1.進(jìn)度條

2.中間的指針怎么弄

1.進(jìn)度條

有人說進(jìn)度條還不容易嗎？就這樣寫：

mPaint.setPathEffect(new DashPathEffect(new float[]{dashWith, dashSpace}, 。。。));


canvas.drawArc(mRectF, 135, 270, false, mPaint);
mPaint.setColor(Color.WHITE);
canvas.drawArc(mRectF, 135, degree, false, mPaint);

設(shè)置個(gè)PathEffect
然后畫個(gè)圓弧，給畫筆設(shè)置顏色然后根據(jù)進(jìn)度，算出角度，然后再畫出一個(gè)圓弧，覆蓋第一個(gè)圓弧的部分不就行了。廢話這么多。
不過我想說的too young too simple. 當(dāng)時(shí)我也是這樣想的，于是就實(shí)現(xiàn)吧！做好了先畫個(gè)50% （也就是第二個(gè)圓弧覆蓋第一個(gè)圓弧的一半）試試，不錯(cuò)啊perfect看來是這樣的，再來個(gè)30%試試尼瑪不對(duì)啊，怎么小格子沒有重合，有點(diǎn)錯(cuò)位啊。MDZZ

后來想了一個(gè)簡(jiǎn)單點(diǎn)的辦法，不覆蓋，畫兩個(gè)圓弧，但是這兩個(gè)圓弧是對(duì)接起來的。比如第一個(gè)圓弧，畫一半，第二個(gè)畫一半。

//draw background arc
canvas.drawArc(mRectF, 135 + degree, 270 - degree, false, mPaint);

//draw progress arc
canvas.drawArc(mRectF, 135, degree, false, mProgressPaint);

2.中間的指針怎么弄

先畫出指針的路徑

mPointerPath = new Path();
mPointerPath.moveTo(centerX + pointRadius, centerY - 7);
mPointerPath.lineTo(centerX + pointRadius, centerY + 7);
mPointerPath.lineTo(mRectF.right - pointGap - lineWidth / 2,centerY);
mPointerPath.lineTo(centerX + pointRadius, centerY - 7);
mPointerPath.close();

在中心draw一個(gè)小圓
然后draw指針,這樣當(dāng)畫布旋轉(zhuǎn)時(shí)指針自然也就旋轉(zhuǎn)了，不懂得要去看看canvas.save(), canvas.restore()的作用

 //draw pointer
canvas.drawCircle(centerX, centerY, pointRadius,mInnerCirclePaint);
canvas.save();
canvas.rotate(135 + degree, centerX, centerY);
canvas.drawPath(mPointerPath, mPointerPaint);
canvas.restore();

下面上完整代碼：

package deadline.grade;

import android.animation.ValueAnimator;
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.os.Build;
import android.support.annotation.IntRange;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;

/**
 * @author deadline
 * @time 2016/9/24
 */
public class GradeProgressView extends View {


 private static final String TAG = GradeProgressView.class.getSimpleName();

 private static final int DEFAULT_PROGRESS_COLOR = Color.WHITE;
 private static final int DEFAULT_BACKGROUND_COLOR = 0x5AFFFFFF;

 private int mBackgroundColor = DEFAULT_BACKGROUND_COLOR;
 private int mProgressColor = DEFAULT_PROGRESS_COLOR;

 //進(jìn)度條的每格線寬，間距，長(zhǎng)度
 private int dashWith = 4;
 private int dashSpace = 6;
 private int lineWidth = 60;

 //最外圈線的寬度和與進(jìn)度條之間的間距
 private int outLineWidth = 5;
 private int gapWidth = 25;

 //指針的線寬度， 半徑， 以及指針與進(jìn)度條的間距
 private int pointLineWidth = 10;
 private int pointRadius = 25;
 private int pointGap = 20;

 private int mProgress = 0;

 //外線
 private RectF mOuterRectF;
 private Paint mOuterPaint;

 //進(jìn)度條
 private RectF mRectF;
 private Paint mPaint;
 private Paint mProgressPaint;

 //指針
 private Paint mInnerCirclePaint;
 private Paint mPointerPaint;
 private Path mPointerPath;

 private float centerX;
 private float centerY;

 private ValueAnimator animator;

 private OnProgressChangeListener mListener;

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

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

 public GradeProgressView(Context context, AttributeSet attrs, int defStyleAttr) {
 super(context, attrs, defStyleAttr);
 setup();
 }

 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
 public GradeProgressView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
 super(context, attrs, defStyleAttr, defStyleRes);
 }


 private void setup() {

 mRectF = new RectF();
 mOuterRectF = new RectF();

 mOuterPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 mOuterPaint.setStrokeWidth(outLineWidth);
 mOuterPaint.setColor(mBackgroundColor);
 mOuterPaint.setStyle(Paint.Style.STROKE);

 mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 mPaint.setStrokeWidth(lineWidth);
 mPaint.setColor(mBackgroundColor);
 mPaint.setStyle(Paint.Style.STROKE);
 mPaint.setPathEffect(new DashPathEffect(new float[]{dashWith, dashSpace}, dashSpace));

 mProgressPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 mProgressPaint.setStrokeWidth(lineWidth);
 mProgressPaint.setColor(mProgressColor);
 mProgressPaint.setStyle(Paint.Style.STROKE);
 mProgressPaint.setPathEffect(new DashPathEffect(new float[]{dashWith, dashSpace}, dashSpace));

 mPointerPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 mPointerPaint.setStrokeWidth(pointLineWidth / 2);
 mPointerPaint.setColor(mProgressColor);
 mPointerPaint.setStyle(Paint.Style.FILL_AND_STROKE);
 mPointerPaint.setStrokeCap(Paint.Cap.ROUND);
 mPointerPaint.setShadowLayer(4, 3, 0, 0x20000000);

 mInnerCirclePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 mInnerCirclePaint.setStrokeWidth(pointLineWidth);
 mInnerCirclePaint.setColor(mProgressColor);
 mInnerCirclePaint.setStyle(Paint.Style.STROKE);
 mInnerCirclePaint.setShadowLayer(4, 3, 0, 0x20000000);
 }


 @Override
 protected void onSizeChanged(int w, int h, int oldw, int oldh) {
 super.onSizeChanged(w, h, oldw, oldh);

 int value = outLineWidth / 2;
 mOuterRectF.set(value, value, w - value, h - value);

 int gap = lineWidth / 2 + outLineWidth + gapWidth;

 mRectF.set(mOuterRectF.left + gap,
  mOuterRectF.top + gap,
  mOuterRectF.right - gap,
  mOuterRectF.bottom - gap);

 centerX = mRectF.centerX();
 centerY = mRectF.centerY();

 mPointerPath = new Path();
 mPointerPath.moveTo(centerX + pointRadius, centerY - 7);
 mPointerPath.lineTo(centerX + pointRadius, centerY + 7);
 mPointerPath.lineTo(mRectF.right - pointGap - lineWidth / 2, centerY);
 mPointerPath.lineTo(centerX + pointRadius, centerY - 7);
 mPointerPath.close();
 }

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

 float degree = 2.7f * mProgress;

 //draw out arc
 canvas.drawArc(mOuterRectF, 135, 270, false, mOuterPaint);

 //draw background arc
 canvas.drawArc(mRectF, 135 + degree, 270 - degree, false, mPaint);

 //draw progress arc
 canvas.drawArc(mRectF, 135, degree, false, mProgressPaint);


 //draw pointer
 canvas.drawCircle(centerX, centerY, pointRadius, mInnerCirclePaint);

 canvas.save();
 canvas.rotate(135 + degree, centerX, centerY);
 canvas.drawPath(mPointerPath, mPointerPaint);
 canvas.restore();
 }


 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);

 int measureWidth = MeasureSpec.getSize(widthMeasureSpec);
 int measureHeight = MeasureSpec.getSize(heightMeasureSpec);
 setMeasuredDimension(Math.min(measureHeight, measureWidth), Math.min(measureHeight, measureWidth));
 }

 public void setOnProgressChangeListener(OnProgressChangeListener listener){
 this.mListener = listener;
 }

 public int getProgressColor() {
 return mProgressColor;
 }

 public void setProgressColor(int progressColor) {
 this.mProgressColor = progressColor;
 if(mProgressPaint != null){
  mProgressPaint.setColor(mProgressColor);
 }

 if(mPointerPaint != null){
  mPointerPaint.setColor(mProgressColor);
 }

 if(mInnerCirclePaint != null){
  mInnerCirclePaint.setColor(mProgressColor);
 }
 postInvalidate();
 }

 public int getBackgroundColor() {
 return mBackgroundColor;
 }

 public void setBackgroundColor(int backgroundColor) {

 this.mBackgroundColor = backgroundColor;
 if(mPaint != null){
  mPaint.setColor(mBackgroundColor);
 }

 if(mOuterPaint != null){
  mOuterPaint.setColor(mBackgroundColor);
 }
 postInvalidate();
 }

 public int getLineWidth() {
 return lineWidth;
 }

 public void setLineWidth(int lineWidth) {
 this.lineWidth = lineWidth;
 if(mPaint != null){
  mPaint.setStrokeWidth(lineWidth);
 }

 if(mProgressPaint != null){
  mProgressPaint.setStrokeWidth(lineWidth);
 }
 postInvalidate();
 }

 public int getOutLineWidth() {
 return outLineWidth;
 }

 public void setOutLineWidth(int outLineWidth) {
 this.outLineWidth = outLineWidth;
 if(mOuterPaint != null){
  mOuterPaint.setStrokeWidth(outLineWidth);
 }
 postInvalidate();
 }

 public int getGapWidth() {
 return gapWidth;
 }

 public void setGapWidth(int gapWidth) {
 this.gapWidth = gapWidth;
 }

 public int getProgress() {
 return mProgress;
 }

 public void setProgress(@IntRange(from = 0, to = 100) int progress) {
 if(progress > 100){
  progress = 100;
 }

 if(progress < 0){
  progress = 0;
 }
 this.mProgress = progress;
 if(mListener != null){
  mListener.onProgressChanged(GradeProgressView.this, mProgress);
 }
 postInvalidate();
 }

 public void setProgressWidthAnimation(@IntRange(from = 0, to = 100) int progress){

 if(progress > 100){
  progress = 100;
 }

 if(progress < 0){
  progress = 0;
 }

 if(animator != null && animator.isRunning()){
  animator.cancel();
  animator = null;
 }

 animator = ValueAnimator.ofInt(mProgress, progress);
 int duration = 10 * Math.abs(progress - mProgress);
 animator.setDuration(duration);

 animator.setInterpolator(new AccelerateDecelerateInterpolator());
 animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
  @Override
  public void onAnimationUpdate(ValueAnimator valueAnimator) {
  int value = (int)valueAnimator.getAnimatedValue();
  if(mProgress != value) {
   mProgress = value;
   if(mListener != null){
   mListener.onProgressChanged(GradeProgressView.this, mProgress);
   }
   postInvalidate();
  }
  }
 });
 animator.start();

 }


 @Override
 protected void onDetachedFromWindow() {
 super.onDetachedFromWindow();

 if(animator != null){
  animator.cancel();
  animator = null;
 }

 }


 public interface OnProgressChangeListener{

 void onProgressChanged(GradeProgressView gradeProgressView, int progress);
 }
}

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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