Android程序研发源码Android 自定义时钟.rar

package com.sky_dreaming.analogic_clock.view; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.BroadcastReceiver; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.os.Handler; import android.os.Message; import android.text.format.Time; import android.util.AttributeSet; import android.util.Log; import android.view.View; import android.widget.RemoteViews.RemoteView; import java.io.InputStream; import java.util.TimeZone; import java.util.Timer; import java.util.TimerTask; import com.sky_dreaming.analogic_clock.R; /** * This widget display an analogic clock with three hands for hours ,minutes and * seconds. * 实现秒针功能：Handler + Message传递 + Timer + TimerTask实现 */ @RemoteView public class TimerClock extends View { private Time mCalendar; /** * 表盘Bitmap对象 */ private Bitmap mDial; /** * 表盘，时针，分针，秒针BitmapDrawable对象 */ private BitmapDrawable mDialDrawable; private BitmapDrawable mHourHandDrawable; private BitmapDrawable mMinuteHandDrawable; private BitmapDrawable mSecondHandDrawable; /** * 表盘有效像素宽高 */ private int mDialWidth; private int mDialHeight; /** * 附着状态 */ private boolean mAttached = false; /** * 时，分，秒 */ private float mHours; private float mMinutes; private float mSeconds; /** * 时区 */ private String time_zone; public String getTime_zone() { return time_zone; } public void setTime_zone(String timeZone) { time_zone = timeZone; } /** * 标志时间、时区、时钟布局大小等是否有改变 */ private boolean mChanged; private Handler mHandler = new Handler(){ public void handleMessage(Message msg) { switch (msg.what) { case 1: invalidate(); break; } super.handleMessage(msg); } }; /** * 标志页面刷新线程尚未执行 */ private boolean isRun = false; private void run() { timer.schedule(clockTask,1000, 1000); } private Timer timer = new Timer(true); private TimerTask clockTask = new TimerTask(){ @Override public void run() { Message message = new Message(); message.what = 1; mHandler.sendMessage(message); } }; /** * 构造方法 */ public TimerClock(Context context) { this(context, null); } public TimerClock(Context context, AttributeSet attrs) { this(context, attrs, 0); } public TimerClock(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); /** * 初始化日历对象 */ mCalendar = new Time(); time_zone = mCalendar.timezone; Resources r = this.getContext().getResources(); InputStream is =null; /** * 初始化表盘，时针，分针， 秒针 */ is = r.openRawResource(R.drawable.clock); mDialDrawable = new BitmapDrawable(is); mDial = mDialDrawable.getBitmap(); is = r.openRawResource(R.drawable.hands); mHourHandDrawable = new BitmapDrawable(is); is = r.openRawResource(R.drawable.hands); mMinuteHandDrawable = new BitmapDrawable(is); is = r.openRawResource(R.drawable.hands); mSecondHandDrawable = new BitmapDrawable(is); /** * 获取表盘有效像素宽高 */ mDialWidth = mDialDrawable.getIntrinsicWidth(); mDialHeight = mDialDrawable.getIntrinsicHeight(); } /** * 该方法在view附着于window时候调用，这时，界面将要绘制，也就是说该方法必定于onDraw(Canvas)之前调用 * 然而，该方法会在onDraw(Canvas)之前的任意时间调用，不一定在onMeasure(int, int)前后 */ @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); if (!mAttached) { mAttached = true; /** * 注册一个消息过滤器，获取时间重置或者时区改变的action */ IntentFilter filter = new IntentFilter(); // filter.addAction(Intent.ACTION_TIME_TICK); filter.addAction(Intent.ACTION_TIME_CHANGED); filter.addAction(Intent.ACTION_TIMEZONE_CHANGED); /** * 注册广播接收器，通过loopHandler接收信息 */ getContext().registerReceiver(mIntentReceiver, filter, null, mHandler); } mCalendar = new Time(); /** * 确保将时间调到当前时间 */ onTimeChanged(); } /** * 当view脱离window时候调用，此时界面不再需要绘制 */ @Override protected void onDetachedFromWindow() { super.onDetachedFromWindow(); if (mAttached) { getContext().unregisterReceiver(mIntentReceiver); mAttached = false; } } /** * 1、onMeasure方法在控件的父元素正要放置它的子控件时调用。它会问一个问题，“你想要用多大地方啊？”，然后传入两个 * 参数 ——widthMeasureSpec 和heightMeasureSpec。它们指明控件可获得的空间以及关于这个空间描述的元数据。 * * 2、默认的onMeasure提供的大小是１００*１００所以你想设置自己ｖｉｅｗ的大小，需要重写onMeasure和onDraw方法 * * 3、如何重写onMeasure。注意，调用的本地空方法是来计算高度和宽度的。 * 它们会译解 widthHeightSpec和heightMeasureSpec值，并计算出合适的高度和宽度值。 */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int widthMode = MeasureSpec.getMode(widthMeasureSpec); int widthSize = MeasureSpec.getSize(widthMeasureSpec); int heightMode = MeasureSpec.getMode(heightMeasureSpec); int heightSize = MeasureSpec.getSize(heightMeasureSpec); float hScale = 1.0f; float vScale = 1.0f; if (widthMode != MeasureSpec.UNSPECIFIED && widthSize < mDialWidth) { hScale = (float) widthSize / (float) mDialWidth; } if (heightMode != MeasureSpec.UNSPECIFIED && heightSize < mDialHeight) { vScale = (float )heightSize / (float) mDialHeight; } float scale = Math.min(hScale, vScale); setMeasuredDimension(resolveSize((int) (mDialWidth * scale), widthMeasureSpec), resolveSize((int) (mDialHeight * scale), heightMeasureSpec)); } /** * 当视图大小改变 * @param w * @param h * @param oldw * @param oldh */ @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); mChanged = true; } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if(!isRun) { run(); isRun = true; return; } onTimeChanged(); boolean changed = mChanged; if (changed) { mChanged = false; } int availableWidth = mDial.getWidth(); int availableHeight = mDial.getHeight(); int x = availableWidth / 2; int y = availableHeight / 2; final Drawable dial = mDialDrawable; int w = dial.getIntrinsicWidth(); int h = dial.getIntrinsicHeight(); boolean scaled = false; if (availableWidth < w || availableHeight < h) { scaled = true; float scale = Math.min((float) availableWidth / (float) w, (float) ava