废话少说 直接上码：
自定义view部分。
``` java
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.text.Layout;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import java.lang.reflect.Method;
/**
* TODO: document your custom view class.
*/
public class CircleView extends View {
//大圆属性
private boolean mGradientAble = false;//颜色渐变
private int mBigCircleRadius;//大圆半径
private int mBigCircleColor;//大圆颜色
private boolean mRotationFunction = false;//是否显示小圈转动
private boolean mBigHollow = false;//是否空心
private int mPaintSize = 4;//大圆画笔大小
// 小圆属性
private int mSmallCircleColor;//小圆颜色
private int mSmallCircleRadius;//小圆半径
private boolean mSmallHollow = false;//是否空心
private int mSmallPaintSize = 2;//小圆画笔大小
private Paint mSmallCirclePaint;//小圆画笔
private Paint mBigCirclePaint;//大圆画笔
private int mBigCircleX, mBigCircleY, mSmallCircleX, mSmallCircleY;
private String mContentStr;//字内容
private int mTextColor = Color.GRAY;//字的颜色
private int mTextSize;//字大小
private int mWrapNumber;//换行字数
private boolean mRunSmallBallLogic = true;
private int mRunDegree = 0;
private int mTimeSleep = 10;
private int mRunDegreeAdd=2;
private final int UPDATE_VIEW_MSG=1;
private TextPaint mTextPaint;
private float mTextWidth;
private float mTextHeight;
private Handler mHandler = new Handler(Looper.getMainLooper()) {
@Override
public void dispatchMessage(Message msg) {
super.dispatchMessage(msg);
if (msg.what == UPDATE_VIEW_MSG) {
calculatCenterPoint();
}
}
};
/**
* 计算圆点中心
*/
private void calculatCenterPoint(){
double cos = Math.cos(mRunDegree * Math.PI / 180);
double sin = Math.sin(mRunDegree * Math.PI / 180);
mSmallCircleX = (int) (mBigCircleX + mBigCircleRadius * cos);
mSmallCircleY = (int) (mBigCircleY - mBigCircleRadius * sin);
mRunDegree += mRunDegreeAdd;
invalidate();
mHandler.sendEmptyMessageDelayed(UPDATE_VIEW_MSG, mTimeSleep);
}
public CircleView(Context context) {
super(context);
init(null, 0);
}
public CircleView(Context context, AttributeSet attrs) {
super(context, attrs);
init(attrs, 0);
}
public CircleView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(attrs, defStyle);
}
private void init(AttributeSet attrs, int defStyle) {
// Load attributes
final TypedArray a = getContext().obtainStyledAttributes(
attrs, R.styleable.CircleView, defStyle, 0);
mGradientAble = a.getBoolean(R.styleable.CircleView_mGradientAble, false);
mBigCircleRadius = (int) a.getDimension(R.styleable.CircleView_mBigCircleRadius, 0);//大圆半径
mBigCircleColor = a.getColor(R.styleable.CircleView_mBigCircleColor, Color.GRAY);//大圆颜色
mRotationFunction = a.getBoolean(R.styleable.CircleView_mRotationFunction, false);//是否显示小圈转动
mBigHollow = a.getBoolean(R.styleable.CircleView_mBigHollow, true);//是否空心
mPaintSize = (int) a.getDimension(R.styleable.CircleView_mPaintSize, 4);//大圆画笔大小
// 小圆属性
mSmallCircleColor = a.getColor(R.styleable.CircleView_mSmallCircleColor, Color.GRAY);//大圆颜色;//小圆颜色
mSmallCircleRadius = (int) a.getDimension(R.styleable.CircleView_mSmallCircleRadius, 0);//小圆半径
mSmallHollow = a.getBoolean(R.styleable.CircleView_mSmallHollow, false);//是否空心
mSmallPaintSize = (int) a.getDimension(R.styleable.CircleView_mSmallPaintSize, 2);//小圆画笔大小
mContentStr = a.getString(R.styleable.CircleView_mContentStr);//字内容
mTextColor = a.getColor(R.styleable.CircleView_mTextColor, Color.GRAY);//字的颜色
mTextSize = (int) a.getDimension(R.styleable.CircleView_mTextSize, 10);//字大小
mWrapNumber = a.getInt(R.styleable.CircleView_mWrapNumber, 2);//字大小
a.recycle();
mSmallCirclePaint = new Paint();
mBigCirclePaint = new Paint();
mTextPaint = new TextPaint();
setPaint();
}
private void logicSmallBall() {
// mRunSmallBallLogic = true;
// new Thread() {
// @Override
// public void run() {
// super.run();
// while (mRunSmallBallLogic) {
// mSmallCircleX = (int) (mBigCircleX + (mBigCircleRadius + mPaintSize / 2f) * Math.cos(mRunDegree));
// mSmallCircleY = (int) (mBigCircleY - (mBigCircleRadius + mPaintSize / 2f) * Math.sin(mRunDegree));
// mRunDegree++;
// try {
// Thread.sleep(mTimeSleep);
// } catch (InterruptedException e) {
// e.printStackTrace();
// }
// mHandler.sendEmptyMessage(1);
// }
// }
// }.start();
mHandler.removeMessages(1);
mHandler.sendEmptyMessageDelayed(1, mTimeSleep);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
}
//设置画笔
public void setPaint() {
mSmallCirclePaint.setAntiAlias(true);//去锯齿
mSmallCirclePaint.setColor(mSmallCircleColor);
mSmallCirclePaint.setStrokeWidth(mSmallPaintSize);
mBigCirclePaint.setAntiAlias(true);
mBigCirclePaint.setColor(mBigCircleColor);
mBigCirclePaint.setStrokeWidth(mPaintSize);
mTextPaint.setFlags(Paint.ANTI_ALIAS_FLAG);
mTextPaint.setTextAlign(Paint.Align.CENTER);
if (mBigHollow) {
mBigCirclePaint.setStyle(Paint.Style.STROKE);
} else {
mBigCirclePaint.setStyle(Paint.Style.FILL);
}
if (mSmallHollow) {
mSmallCirclePaint.setStyle(Paint.Style.STROKE);
} else {
mSmallCirclePaint.setStyle(Paint.Style.FILL);
}
invalidateTextPaintAndMeasurements();
}
private void invalidateTextPaintAndMeasurements() {
mTextPaint.setTextSize(mTextSize);
mTextPaint.setColor(mTextColor);
mTextWidth = mTextPaint.measureText(mContentStr);
Paint.FontMetrics fontMetrics = mTextPaint.getFontMetrics();
mTextHeight = fontMetrics.bottom;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.save();
StaticLayout layout = new StaticLayout(mContentStr, mTextPaint, 10000, Layout.Alignment.ALIGN_NORMAL, 1, 0, false);
canvas.translate(mBigCircleX, mBigCircleY - 3 * mTextHeight);//从100，100开始画
layout.draw(canvas);
canvas.restore();
canvas.drawCircle(mBigCircleX, mBigCircleY, mBigCircleRadius, mBigCirclePaint);
if (mRotationFunction) {
canvas.drawCircle(mSmallCircleX, mSmallCircleY, mSmallCircleRadius, mSmallCirclePaint);
}
// Log.e("TAG", "mBigCircleRadius:" + mBigCircleRadius + " mTextHeight:" + mTextHeight + " mContentStr" + mContentStr.length());
}
@Override
public void onWindowFocusChanged(boolean hasWindowFocus) {
super.onWindowFocusChanged(hasWindowFocus);
if (hasWindowFocus) {
mBigCircleX = this.getWidth() / 2;
mBigCircleY = this.getHeight() / 2;
if (mBigCircleRadius == 0) {
mBigCircleRadius = this.getWidth() / 2 - 2 * mPaintSize;
}
if (mRotationFunction) {//显示旋转小球
mHandler.removeMessages(UPDATE_VIEW_MSG);
calculatCenterPoint();
}
invalidate();
}
}
public void setmRunDegreeAdd(int mRunDegreeAdd) {
this.mRunDegreeAdd = mRunDegreeAdd;
}
public void setmTimeSleep(int mTimeSleep) {
this.mTimeSleep = mTimeSleep;
}
public void setmTextSize(int mTextSize) {
this.mTextSize = mTextSize;
mTextPaint.setTextSize(mTextSize);
}
public void setmTextColor(int mTextColor) {
this.mTextColor = mTextColor;
mTextPaint.setColor(mTextColor);
}
public void setmContentStr(String mContentStr) {
this.mContentStr = mContentStr;
}
public void setmGradientAble(boolean mGradientAble) {
this.mGradientAble = mGradientAble;
}
public void setmBigCircleRadius(int mBigCircleRadius) {
this.mBigCircleRadius = mBigCircleRadius;
}
public void setmBigCircleColor(int mBigCircleColor) {
this.mBigCircleColor = mBigCircleColor;
mBigCirclePaint.setColor(mBigCircleColor);
}
public void setmRotationFunction(boolean mRotationFunction) {
this.mRotationFunction = mRotationFunction;
}
public void setmBigHollow(boolean mBigHollow) {
this.mBigHollow = mBigHollow;
}
public void setmPaintSize(int mPaintSize) {
this.mPaintSize = mPaintSize;
mBigCirclePaint.setStrokeWidth(mPaintSize);
}
public void setmSmallCircleColor(int mSmallCircleColor) {
this.mSmallCircleColor = mSmallCircleColor;
mSmallCirclePaint.setColor(mSmallCircleColor);
}
public void setmSmallCircleRadius(int mSmallCircleRadius) {
this.mSmallCircleRadius = mSmallCircleRadius;
}
public void setmSmallHollow(boolean mSmallHollow) {
this.mSmallHollow = mSmallHollow;
}
public void setmSmallPaintSize(int mSmallPaintSize) {
this.mSmallPaintSize = mSmallPaintSize;
mSmallCirclePaint.setStrokeWidth(mSmallPaintSize);
}
public void setmTextWidth(float mTextWidth) {
this.mTextWidth = mTextWidth;
}
public void setmTextHeight(float mTextHeight) {
this.mTextHeight = mTextHeight;
}
}```
需要在attrs中定义属性
为什么粘不了代码：？？？？？
