我正在使用这个Github库https://github.com/lzyzsd/CircleProgress。
但是我不知道如何增加弧的大小或调整弧的周长意味着弧的起点和终点。
我无法解决，请提供帮助。
这是我的xml代码。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:custom="http://schemas.android.com/apk/res-auto"
android:background="#4a4a4a" xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Player Header -->
<!-- Progress Bar/Seek bar -->
<com.androidhive.musicplayer.equalizer.ArcProgress
android:id="@+id/songProgressBar"
android:background="#214193"
android:layout_marginLeft="50dp"
android:layout_width="100dp"
android:layout_height="100dp"
custom:arc_progress="55"
custom:arc_bottom_text="MEMORY"/>
</RelativeLayout>
这是ArcProgress.java
package com.androidhive.musicplayer.equalizer;
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.os.Bundle;
import android.os.Parcelable;
import android.text.TextPaint;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.View;
import com.androidhive.musicplayer.R;
/**
* Created by bruce on 11/6/14.
*/
public class ArcProgress extends View {
private Paint paint;
protected Paint textPaint;
private RectF rectF = new RectF();
private float strokeWidth;
private float suffixTextSize;
private float bottomTextSize;
private String bottomText;
private float textSize;
private int textColor;
private int progress = 0;
private int max;
private int finishedStrokeColor;
private int unfinishedStrokeColor;
private float arcAngle;
private String suffixText = "%";
private float suffixTextPadding;
private float arcBottomHeight;
private final int default_finished_color = Color.WHITE;
private final int default_unfinished_color = Color.rgb(72, 106, 176);
private final int default_text_color = Color.rgb(66, 145, 241);
private final float default_suffix_text_size;
private final float default_suffix_padding;
private final float default_bottom_text_size;
private final float default_stroke_width;
private final String default_suffix_text;
private final int default_max = 100;
private final float default_arc_angle = 360 * 0.8f;
private float default_text_size;
private final int min_size;
private static final String INSTANCE_STATE = "saved_instance";
private static final String INSTANCE_STROKE_WIDTH = "stroke_width";
private static final String INSTANCE_SUFFIX_TEXT_SIZE = "suffix_text_size";
private static final String INSTANCE_SUFFIX_TEXT_PADDING = "suffix_text_padding";
private static final String INSTANCE_BOTTOM_TEXT_SIZE = "bottom_text_size";
private static final String INSTANCE_BOTTOM_TEXT = "bottom_text";
private static final String INSTANCE_TEXT_SIZE = "text_size";
private static final String INSTANCE_TEXT_COLOR = "text_color";
private static final String INSTANCE_PROGRESS = "progress";
private static final String INSTANCE_MAX = "max";
private static final String INSTANCE_FINISHED_STROKE_COLOR = "finished_stroke_color";
private static final String INSTANCE_UNFINISHED_STROKE_COLOR = "unfinished_stroke_color";
private static final String INSTANCE_ARC_ANGLE = "arc_angle";
private static final String INSTANCE_SUFFIX = "suffix";
public ArcProgress(Context context) {
this(context, null);
}
public ArcProgress(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ArcProgress(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
default_text_size = Utils.sp2px(getResources(), 18);
min_size = (int) Utils.dp2px(getResources(), 100);
default_text_size = Utils.sp2px(getResources(), 40);
default_suffix_text_size = Utils.sp2px(getResources(), 15);
default_suffix_padding = Utils.dp2px(getResources(), 4);
default_suffix_text = "%";
default_bottom_text_size = Utils.sp2px(getResources(), 10);
default_stroke_width = Utils.dp2px(getResources(), 4);
TypedArray attributes = context.getTheme().obtainStyledAttributes(attrs, R.styleable.ArcProgress, defStyleAttr, 0);
initByAttributes(attributes);
attributes.recycle();
initPainters();
}
protected void initByAttributes(TypedArray attributes) {
finishedStrokeColor = attributes.getColor(R.styleable.ArcProgress_arc_finished_color, default_finished_color);
unfinishedStrokeColor = attributes.getColor(R.styleable.ArcProgress_arc_unfinished_color, default_unfinished_color);
textColor = attributes.getColor(R.styleable.ArcProgress_arc_text_color, default_text_color);
textSize = attributes.getDimension(R.styleable.ArcProgress_arc_text_size, default_text_size);
arcAngle = attributes.getFloat(R.styleable.ArcProgress_arc_angle, default_arc_angle);
setMax(attributes.getInt(R.styleable.ArcProgress_arc_max, default_max));
setProgress(attributes.getInt(R.styleable.ArcProgress_arc_progress, 0));
strokeWidth = attributes.getDimension(R.styleable.ArcProgress_arc_stroke_width, default_stroke_width);
suffixTextSize = attributes.getDimension(R.styleable.ArcProgress_arc_suffix_text_size, default_suffix_text_size);
suffixText = TextUtils.isEmpty(attributes.getString(R.styleable.ArcProgress_arc_suffix_text)) ? default_suffix_text : attributes.getString(R.styleable.ArcProgress_arc_suffix_text);
suffixTextPadding = attributes.getDimension(R.styleable.ArcProgress_arc_suffix_text_padding, default_suffix_padding);
bottomTextSize = attributes.getDimension(R.styleable.ArcProgress_arc_bottom_text_size, default_bottom_text_size);
bottomText = attributes.getString(R.styleable.ArcProgress_arc_bottom_text);
}
protected void initPainters() {
textPaint = new TextPaint();
textPaint.setColor(textColor);
textPaint.setTextSize(textSize);
textPaint.setAntiAlias(true);
paint = new Paint();
paint.setColor(default_unfinished_color);
paint.setAntiAlias(true);
paint.setStrokeWidth(strokeWidth);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeCap(Paint.Cap.ROUND);
}
@Override
public void invalidate() {
initPainters();
super.invalidate();
}
public float getStrokeWidth() {
return strokeWidth;
}
public void setStrokeWidth(float strokeWidth) {
this.strokeWidth = strokeWidth;
this.invalidate();
}
public float getSuffixTextSize() {
return suffixTextSize;
}
public void setSuffixTextSize(float suffixTextSize) {
this.suffixTextSize = suffixTextSize;
this.invalidate();
}
public String getBottomText() {
return bottomText;
}
public void setBottomText(String bottomText) {
this.bottomText = bottomText;
this.invalidate();
}
public int getProgress() {
return progress;
}
public void setProgress(int progress) {
this.progress = progress;
if (this.progress > getMax()) {
this.progress %= getMax();
}
invalidate();
}
public int getMax() {
return max;
}
public void setMax(int max) {
if (max > 0) {
this.max = max;
invalidate();
}
}
public float getBottomTextSize() {
return bottomTextSize;
}
public void setBottomTextSize(float bottomTextSize) {
this.bottomTextSize = bottomTextSize;
this.invalidate();
}
public float getTextSize() {
return textSize;
}
public void setTextSize(float textSize) {
this.textSize = textSize;
this.invalidate();
}
public int getTextColor() {
return textColor;
}
public void setTextColor(int textColor) {
this.textColor = textColor;
this.invalidate();
}
public int getFinishedStrokeColor() {
return finishedStrokeColor;
}
public void setFinishedStrokeColor(int finishedStrokeColor) {
this.finishedStrokeColor = finishedStrokeColor;
this.invalidate();
}
public int getUnfinishedStrokeColor() {
return unfinishedStrokeColor;
}
public void setUnfinishedStrokeColor(int unfinishedStrokeColor) {
this.unfinishedStrokeColor = unfinishedStrokeColor;
this.invalidate();
}
public float getArcAngle() {
return arcAngle;
}
public void setArcAngle(float arcAngle) {
this.arcAngle = arcAngle;
this.invalidate();
}
public String getSuffixText() {
return suffixText;
}
public void setSuffixText(String suffixText) {
this.suffixText = suffixText;
this.invalidate();
}
public float getSuffixTextPadding() {
return suffixTextPadding;
}
public void setSuffixTextPadding(float suffixTextPadding) {
this.suffixTextPadding = suffixTextPadding;
this.invalidate();
}
@Override
protected int getSuggestedMinimumHeight() {
return min_size;
}
@Override
protected int getSuggestedMinimumWidth() {
return min_size;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
rectF.set(strokeWidth / 2f, strokeWidth / 2f, width - strokeWidth / 2f, MeasureSpec.getSize(heightMeasureSpec) - strokeWidth / 2f);
float radius = width / 2f;
float angle = (360 - arcAngle) / 2f;
arcBottomHeight = radius * (float) (1 - Math.cos(angle / 180 * Math.PI));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
float startAngle = 270 - arcAngle / 2f;
float finishedSweepAngle = progress / (float) getMax() * arcAngle;
float finishedStartAngle = startAngle;
paint.setColor(unfinishedStrokeColor);
canvas.drawArc(rectF, startAngle, arcAngle, false, paint);
paint.setColor(finishedStrokeColor);
canvas.drawArc(rectF, finishedStartAngle, finishedSweepAngle, false, paint);
String text = String.valueOf(getProgress());
if (!TextUtils.isEmpty(text)) {
textPaint.setColor(textColor);
textPaint.setTextSize(textSize);
float textHeight = textPaint.descent() + textPaint.ascent();
float textBaseline = (getHeight() - textHeight) / 2.0f;
canvas.drawText(text, (getWidth() - textPaint.measureText(text)) / 2.0f, textBaseline, textPaint);
textPaint.setTextSize(suffixTextSize);
float suffixHeight = textPaint.descent() + textPaint.ascent();
canvas.drawText(suffixText, getWidth() / 2.0f + textPaint.measureText(text) + suffixTextPadding, textBaseline + textHeight - suffixHeight, textPaint);
}
if (!TextUtils.isEmpty(getBottomText())) {
textPaint.setTextSize(bottomTextSize);
float bottomTextBaseline = getHeight() - arcBottomHeight - (textPaint.descent() + textPaint.ascent()) / 2;
canvas.drawText(getBottomText(), (getWidth() - textPaint.measureText(getBottomText())) / 2.0f, bottomTextBaseline, textPaint);
}
}
@Override
protected Parcelable onSaveInstanceState() {
final Bundle bundle = new Bundle();
bundle.putParcelable(INSTANCE_STATE, super.onSaveInstanceState());
bundle.putFloat(INSTANCE_STROKE_WIDTH, getStrokeWidth());
bundle.putFloat(INSTANCE_SUFFIX_TEXT_SIZE, getSuffixTextSize());
bundle.putFloat(INSTANCE_SUFFIX_TEXT_PADDING, getSuffixTextPadding());
bundle.putFloat(INSTANCE_BOTTOM_TEXT_SIZE, getBottomTextSize());
bundle.putString(INSTANCE_BOTTOM_TEXT, getBottomText());
bundle.putFloat(INSTANCE_TEXT_SIZE, getTextSize());
bundle.putInt(INSTANCE_TEXT_COLOR, getTextColor());
bundle.putInt(INSTANCE_PROGRESS, getProgress());
bundle.putInt(INSTANCE_MAX, getMax());
bundle.putInt(INSTANCE_FINISHED_STROKE_COLOR, getFinishedStrokeColor());
bundle.putInt(INSTANCE_UNFINISHED_STROKE_COLOR, getUnfinishedStrokeColor());
bundle.putFloat(INSTANCE_ARC_ANGLE, getArcAngle());
bundle.putString(INSTANCE_SUFFIX, getSuffixText());
return bundle;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if(state instanceof Bundle) {
final Bundle bundle = (Bundle) state;
strokeWidth = bundle.getFloat(INSTANCE_STROKE_WIDTH);
suffixTextSize = bundle.getFloat(INSTANCE_SUFFIX_TEXT_SIZE);
suffixTextPadding = bundle.getFloat(INSTANCE_SUFFIX_TEXT_PADDING);
bottomTextSize = bundle.getFloat(INSTANCE_BOTTOM_TEXT_SIZE);
bottomText = bundle.getString(INSTANCE_BOTTOM_TEXT);
textSize = bundle.getFloat(INSTANCE_TEXT_SIZE);
textColor = bundle.getInt(INSTANCE_TEXT_COLOR);
setMax(bundle.getInt(INSTANCE_MAX));
setProgress(bundle.getInt(INSTANCE_PROGRESS));
finishedStrokeColor = bundle.getInt(INSTANCE_FINISHED_STROKE_COLOR);
unfinishedStrokeColor = bundle.getInt(INSTANCE_UNFINISHED_STROKE_COLOR);
suffixText = bundle.getString(INSTANCE_SUFFIX);
initPainters();
super.onRestoreInstanceState(bundle.getParcelable(INSTANCE_STATE));
return;
}
super.onRestoreInstanceState(state);
}
}
我想增加圆弧半径并增加其圆周。
任何麻将不胜感激。
提前感谢:)
最佳答案
我想增加圆弧半径并增加其周长
根据您发布的代码，大小由onMeasure决定
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
rectF.set(strokeWidth / 2f, strokeWidth / 2f, width - strokeWidth / 2f, MeasureSpec.getSize(heightMeasureSpec) - strokeWidth / 2f);
float radius = width / 2f;
float angle = (360 - arcAngle) / 2f;
arcBottomHeight = radius * (float) (1 - Math.cos(angle / 180 * Math.PI));
}
因此，为了增加半径，您必须增加布局中提供的宽度和高度。如果要更改圆弧的颜色，可以在xml中静态提供
arc_finished_color和arc_unfinished_color例如。
<com.androidhive.musicplayer.equalizer.ArcProgress
android:id="@+id/songProgressBar"
android:background="#214193"
android:layout_marginLeft="50dp"
android:layout_width="100dp"
android:layout_height="100dp"
custom:arc_progress="55"
custom:arc_bottom_text="MEMORY"
custom:arc_finished_color="@color/finished_color"
custom:arc_unfinished_color="@color/unfinished_color"/>
关于java - 改变圆弧半径，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/34237756/