Android自定义View 实现闹钟唤起播放闹钟铃声功能

先上图看一下闹钟唤期页面的效果

实现的功能：

1：转动的图片根据天气情况更换

2：转动时间可以设置，转动结束，闹铃声音就结束

3：光圈颜色渐变效果

直接上代码啦：

package com.yuekong.sirius.extension.customview; 
import Android.animation.Animator; 
import android.animation.ValueAnimator; 
import android.content.Context; 
import android.content.res.TypedArray; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.graphics.Rect; 
import android.graphics.RectF; 
import android.graphics.SweepGradient; 
import android.media.Ringtone; 
import android.media.RingtoneManager; 
import android.net.Uri; 
import android.util.AttributeSet; 
import android.util.TypedValue; 
import android.view.View; 
import android.view.animation.LinearInterpolator; 
import com.yuekong.sirius.extension.R; 
import com.yuekong.sirius.extension.util.ExtendUtil; 
import java.text.SimpleDateFORMat; 
 
public class ClockWakeView extends View { 
//最外一层圆的颜色 
private int mOutCircleColor; 
//最外一层圆的半径 
private int mOutCircleRadis; 
//内圆的颜色 
private int mInnerCircleColor; 
//内圆的半径 
private int mInnerCircleRadis; 
private int mWidth; 
private int mHeight; 
//默认宽度 
private final int DEFAULT_WIDTH = dp2px(240); 
//默认高度 
private final int DEFAULT_HEIGHT = dp2px(240); 
//最外圆的默认半径 
private int DEFAULT_OUT_RADIS = dp2px(120); 
//内圆的默认半径 
private int DeFAULT_INNER_RADIS = dp2px(105); 
//标题距离顶部的默认距离 
private int DEFAULT_TITLE_PADDING_TOP = dp2px(40); 
//最外层圆形的Paint 
private Paint mOutCirclePaint; 
//内圆的Paint 
private Paint mInnerCirclePaint; 
//标题Paint 
private Paint mTitlePaint; 
//渐变弧 
private Paint mGradientArcPaint; 
private SweepGradient mSweepGradient; 
//日期时间Paint 
private Paint mTimePaint; 
private Paint mDatePaint; 
//时间分隔的图片 
private Bitmap mDividerPic; 
//天气图片 
private Bitmap mWeatherPic; 
//标题 
private String mTitle; 
//当前时间 
private long mCurrentDate = 1481010829605L; 
private SimpleDateFormat mFormat; 
private Ringtone mRingTone; 
//图片在倒计时几分钟内走完一个周期 根据音乐时间来计算 
private long mCountDownTime; 
//倒计时转过的角度 
private float mCurrentAngle; 
//倒计时结束回调 
private CountdownFinishListener mCountdownListener; 
private Context mContext; 
public ClockWakeView(Context context) { 
this(context, null); 
mContext = context; 
} 
public ClockWakeView(Context context, AttributeSet attrs) { 
this(context, attrs, 0); 
mContext = context; 
} 
public ClockWakeView(Context context, AttributeSet attrs, int defStyleAttr) { 
super(context, attrs, defStyleAttr); 
mContext = context; 
TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.SiriusClockWakeView); 
mOutCircleColor = ta.getColor(R.styleable.SiriusClockWakeView_outColor, context.getResources().getColor(R.color.out_circle_color)); 
mOutCircleRadis = (int) ta.getDimension(R.styleable.SiriusClockWakeView_outCircleRadis, DEFAULT_OUT_RADIS); 
mInnerCircleColor = context.getResources().getColor(R.color.inner_circle_color); 
mInnerCircleRadis = DeFAULT_INNER_RADIS; 
mTitle = context.getResources().getString(R.string.clock); 
ta.recycle(); 
initPaint(); 
} 
private void initPaint() { 
mFormat = new SimpleDateFormat("MM月dd日_HH_mm_EEEE"); 
//获取分隔图片 
mDividerPic = BitmapFactory.decodeResource(getResources(), R.drawable.time_divider); 
mWeatherPic = BitmapFactory.decodeResource(getResources(), R.drawable.icon_weather); 
//外圆的paint 
mOutCirclePaint = new Paint(); 
mOutCirclePaint.setAntiAlias(true); 
mOutCirclePaint.setStyle(Paint.Style.STROKE); 
mOutCirclePaint.setStrokeWidth(dp2px(5)); 
mOutCirclePaint.setColor(mOutCircleColor); 
//内圆的Paint 
mInnerCirclePaint = new Paint(); 
mInnerCirclePaint.setAntiAlias(true); 
mInnerCirclePaint.setStyle(Paint.Style.STROKE); 
mInnerCirclePaint.setStrokeWidth(dp2px(5)); 
mInnerCirclePaint.setColor(mInnerCircleColor); 
//标题的Paint 
mTitlePaint = new Paint(); 
mTitlePaint.setAntiAlias(true); 
mTitlePaint.setStyle(Paint.Style.FILL); 
mTitlePaint.setColor(mContext.getResources().getColor(R.color.nav_highlighted)); 
mTitlePaint.setTextSize(sp2px(14)); 
//时间的Paint 
mTimePaint = new Paint(); 
mTimePaint.setAntiAlias(true); 
mTimePaint.setColor(Color.WHITE); 
mTimePaint.setStyle(Paint.Style.FILL); 
mTimePaint.setTextSize(sp2px(70)); 
//日期的Paint 
mDatePaint = new Paint(); 
mDatePaint.setAntiAlias(true); 
mDatePaint.setColor(Color.WHITE); 
mDatePaint.setStyle(Paint.Style.FILL); 
mDatePaint.setTextSize(sp2px(14)); 
//渐变弧的Paint 
mGradientArcPaint = new Paint(); 
mGradientArcPaint.setAntiAlias(true); 
mGradientArcPaint.setStyle(Paint.Style.STROKE); 
mGradientArcPaint.setStrokeWidth(dp2px(5)); 
mGradientArcPaint.setStrokeCap(Paint.Cap.BUTT); 
mGradientArcPaint.setStrokeJoin(Paint.Join.MITER); 
//设置渐变的颜色 
int[] colors = {0x00AEA1FF, 0x40AEA1FF, 0xFFAEA1FF, 0xFFAEA1FF}; 
//渐变色 
mSweepGradient = new SweepGradient(0, 0, colors, null); 
mGradientArcPaint.setShader(mSweepGradient); 
} 
@Override 
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
super.onMeasure(widthMeasureSpec, heightMeasureSpec); 
mWidth = startMeasure(widthMeasureSpec); 
mHeight = startMeasure(heightMeasureSpec); 
setMeasuredDimension(mWidth, mHeight); 
} 
@Override 
protected void onDraw(Canvas canvas) { 
super.onDraw(canvas); 
//移动画布到中间 
canvas.translate(mWidth / 2, mHeight / 2); 
//绘制最外层的圆形 
drawOutCircle(canvas); 
//绘制内圆 
drawInnerCircle(canvas); 
//绘制中间的分隔图片 
drawDividerPic(canvas); 
//绘制标题 
drawTitle(canvas); 
//绘制时间 
drawDateTime(canvas); 
//绘制旋转图片 
drawLightArc(canvas); 
} 
private void drawOutCircle(Canvas canvas) { 
canvas.save(); 
canvas.drawCircle(0, 0, mOutCircleRadis, mOutCirclePaint); 
canvas.restore(); 
} 
private void drawInnerCircle(Canvas canvas) { 
canvas.save(); 
canvas.drawCircle(0, 0, mInnerCircleRadis, mInnerCirclePaint); 
canvas.restore(); 
} 
private void drawDividerPic(Canvas canvas) { 
canvas.save(); 
canvas.drawBitmap(mDividerPic, null, new Rect(-dp2px(3), -dp2px(14), dp2px(3), dp2px(14)), null); 
canvas.restore(); 
} 
private void drawTitle(Canvas canvas) { 
canvas.save(); 
if (mTitle == null || mTitle.length() <= 0) { 
return; 
} 
float textWidth = mTitlePaint.measureText(mTitle); 
float baseLine = DeFAULT_INNER_RADIS - DEFAULT_TITLE_PADDING_TOP; 
canvas.drawText(mTitle, -textWidth / 2, -baseLine, mTitlePaint); 
canvas.restore(); 
} 
private void drawLightArc(Canvas canvas) { 
canvas.save(); 
canvas.rotate(mCurrentAngle); 
RectF rect = new RectF(-mInnerCircleRadis, -mInnerCircleRadis, mInnerCircleRadis, mInnerCircleRadis); 
canvas.drawArc(rect, -270, 180, false, mGradientArcPaint); 
canvas.drawBitmap(mWeatherPic, null, new Rect(-dp2px(12), -mInnerCircleRadis - dp2px(12), dp2px(12), dp2px(12) - mInnerCircleRadis), null); 
canvas.restore(); 
} 
private void drawDateTime(Canvas canvas) { 
canvas.save(); 
String timeStr = ExtendUtil.getAllFormatStr(mFormat, mCurrentDate); 
String[] array = timeStr.split("_"); 
String date = array[0]; 
String hour = array[1]; 
String minute = array[2]; 
String wake = array[3]; 
float width = mTimePaint.measureText(hour); 
RectF targetRect = new RectF(-(width + dp2px(40)), -sp2px(70) / 2, -dp2px(40), sp2px(70) / 2); 
Paint.FontMetricsInt fontMetrics = mTimePaint.getFontMetricsInt(); 
int baseline = (int) (targetRect.top + (targetRect.bottom - targetRect.top - fontMetrics.bottom + fontMetrics.top) / 2 - fontMetrics.top); 
canvas.drawText(hour, -width - dp2px(15), baseline, mTimePaint); 
float minuteWidth = mTimePaint.measureText(minute); 
RectF minuteRect = new RectF(dp2px(15), -sp2px(70) / 2, dp2px(15) + minuteWidth, sp2px(70) / 2); 
Paint.FontMetricsInt minuteMetrics = mTimePaint.getFontMetricsInt(); 
int minuteLine = (int) (minuteRect.top + (minuteRect.bottom - minuteRect.top - minuteMetrics.bottom + minuteMetrics.top) / 2 - minuteMetrics.top); 
canvas.drawText(minute, dp2px(15), minuteLine, mTimePaint); 
String dateStr = date + " " + wake; 
float dateWidth = mDatePaint.measureText(dateStr); 
RectF dateRect = new RectF(-dateWidth / 2, sp2px(30), dateWidth / 2, sp2px(30) + sp2px(14)); 
Paint.FontMetricsInt dateMetrics = mTimePaint.getFontMetricsInt(); 
int dateLine = (int) (dateRect.top + (dateRect.bottom - dateRect.top - dateMetrics.bottom + dateMetrics.top) / 2 - dateMetrics.top); 
canvas.drawText(dateStr, -dateWidth / 2, dateLine, mDatePaint); 
canvas.restore(); 
} 
private int startMeasure(int whSpec) { 
int result = 0; 
int size = MeasureSpec.getSize(whSpec); 
int mode = MeasureSpec.getMode(whSpec); 
if (mode == MeasureSpec.EXACTLY) { 
result = size; 
} else { 
result = DEFAULT_WIDTH; 
} 
return result; 
} 
//开始倒计时计算闹钟结束 
public void startCountDown() { 
ValueAnimator animator = ValueAnimator.ofFloat(0, 1.0f); 
animator.setDuration(mCountDownTime); 
//匀速 
animator.setInterpolator(new LinearInterpolator()); 
//不循环 
animator.setRepeatCount(0); 
//监听动画过程中值得实时变化 
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 
@Override 
public void onAnimationUpdate(ValueAnimator valueAnimator) { 
mCurrentAngle = (float) valueAnimator.getAnimatedValue() * 360; 
invalidate(); 
} 
}); 
animator.addListener(new Animator.AnimatorListener() { 
@Override 
public void onAnimationStart(Animator animator) { 
} 
@Override 
public void onAnimationEnd(Animator animator) { 
if (mRingTone != null && mRingTone.isPlaying()) { 
mRingTone.stop(); 
} 
if (mCountdownListener != null) { 
mCountdownListener.countdownFinished(); 
} 
} 
@Override 
public void onAnimationCancel(Animator animator) { 
} 
@Override 
public void onAnimationRepeat(Animator animator) { 
} 
}); 
animator.start(); 
//播放闹钟铃声 
Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE); 
mRingTone = RingtoneManager.getRingtone(mContext, notification); 
if (mRingTone != null && !mRingTone.isPlaying()) { 
mRingTone.play(); 
} 
} 
//提供设置倒计时的方法 
public void setCountDownTime(long time, CountdownFinishListener listener) { 
mCountDownTime = time; 
mCountdownListener = listener; 
} 
//设置当前日期时间 
public void setCurrentTime(long currentTime) { 
mCurrentDate = currentTime; 
invalidate(); 
} 
private int dp2px(int dp) { 
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics()); 
} 
private int sp2px(int sp) { 
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, getResources().getDisplayMetrics()); 
} 
public interface CountdownFinishListener { 
//倒计时结束操作 
void countdownFinished(); 
} 
}

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