Android Launcher 时钟、日历图标随时间动态变更
转载自：http://blog.csdn.net/pinsengjixuhezhou/article/details/45890569
注：这篇文章 主要内容和思路还是转自上面链接中博主的文章，我在实际使用过程中根据自己的需求有些调整。
主要要的逻辑就是想办法替换掉应用icon的drawable，然后通过自定义drawable的方式来实现动态Icon。
直接贴代码吧，没什么难的。
首先在IconCache.java 中的修改
ShortcutInfo.java
BubbleTextView.java
@Override
public void setCompoundDrawables(Drawable left, Drawable top,
Drawable right, Drawable bottom) {
// TODO Auto-generated method stub
if(top != null){
if(mScript != null){
top = mScript;
Rect rect = new Rect();
rect.set(0, 0, LauncherAppState.getInstance().getInvariantDeviceProfile().iconBitmapSize,
LauncherAppState.getInstance().getInvariantDeviceProfile().iconBitmapSize);
mScript.setBounds(rect);
if(!mScript.isRuning){
mScript.run(this);
}
}
}
super.setCompoundDrawables(left, top, right, bottom);
}
</pre><pre code_snippet_id="1674198" snippet_file_name="blog_20160506_3_9573334" name="code" class="java">/**
* dynamic calendar Icon
*
*/
public class CalendarScript extends IconScript {
Time mTime = new Time();
Rect mSrcRect = new Rect();
Rect mDestRect = new Rect();
Context mContext;
public CalendarScript() {
super();
mContext = LauncherAppState.getInstance().getContext();
}
@Override
public void draw(Canvas canvas) {
super.draw(canvas);
mTime.setToNow();
// canvas.drawBitmap(getRes(mTime.monthDay), null, getBounds(), mPaint);
Bitmap calendarBackground = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.calendar);
Bitmap dayOfMonthRes = getCalendarDataRes(mTime.monthDay);
Bitmap dayOfWeekRes = getCalendarWeekDayRes(mTime.weekDay);
int width = LauncherAppState.getInstance().getInvariantDeviceProfile().iconBitmapSize;
int height = width;
mDestRect.set(0, 0, width, height);
mSrcRect.set(0, 0, calendarBackground.getWidth(), calendarBackground.getHeight());
canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG));
canvas.drawBitmap(calendarBackground, mSrcRect, mDestRect, null);
canvas.drawBitmap(dayOfMonthRes, (width - dayOfMonthRes.getWidth()) / 2 , (height - dayOfMonthRes.getHeight()) / 2 + 10, null);
canvas.drawBitmap(dayOfWeekRes, (width - dayOfWeekRes.getWidth()) / 2, dayOfWeekRes.getHeight(), null);
canvas.save(Canvas.ALL_SAVE_FLAG);
canvas.restore();
}
@Override
public void run(final View view) {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_DATE_CHANGED);
filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
filter.addAction("android.intent.action.TIME_SET");
view.getContext().registerReceiver(new BroadcastReceiver() {
@Override
public void onReceive(Context arg0, Intent arg1) {
view.postInvalidate();
}
}, filter);
super.run(view);
}
private Bitmap getCalendarDataRes(int monthDay){
int res = mContext.getResources().getIdentifier("calendar_data_" + monthDay, "drawable", mContext.getPackageName());
BitmapDrawable bitmapDrawable = (BitmapDrawable)mContext.getResources().getDrawable(res);
return bitmapDrawable.getBitmap();
}
private Bitmap getCalendarWeekDayRes(int weekDay){
int res = mContext.getResources().getIdentifier("calendar_week_" + weekDay, "drawable", mContext.getPackageName());
BitmapDrawable bitmapDrawable = (BitmapDrawable)mContext.getResources().getDrawable(res);
return bitmapDrawable.getBitmap();
}
}
/**
* dynamic Clock Icon
*
*/
public class ClockScript extends IconScript {
Rect mSrcRect = new Rect();
Rect mDestRect = new Rect();
private int mIconSize;
private Context mContext;
private Time mTime;
private Bitmap mSecond, mMinute, mHour, mBackground;
private int mHiegtOffset, mWidthOffset;
/**
* Results show target View
*/
private View mView;
/**
* notify System to invalidate
*/
private ClockThread mClockThread = null;
/**
* is showen on the screen now
*/
private boolean mIsShowInScreen = false;
public ClockScript(){
super();
mContext = LauncherAppState.getInstance().getContext();
mIconSize = LauncherAppState.getInstance().getInvariantDeviceProfile().iconBitmapSize;
}
public void run(View view) {
mView = view;
mTime = new Time();
mBackground = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.launcher_theme_ic_app_clock_bg);//getBounds();
mSecond = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.launcher_theme_ic_app_clock_second_draw_by_pic);
mMinute = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.launcher_theme_ic_app_clock_minute_draw_by_pic);
mHour = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.launcher_theme_ic_app_clock_hour_draw_by_pic);
mDestRect.set(0, 0, mIconSize, mIconSize);
mSrcRect.set(0, 0, mBackground.getWidth(), mBackground.getHeight());
mHiegtOffset = (mIconSize - mBackground.getHeight()) / 2;
mWidthOffset = (mIconSize - mSecond.getWidth()) / 2;
if(mClockThread == null){
mClockThread = new ClockThread();
mClockThread.start();
}
}
@Override
public void onPause() {
mClockThread.pauseRun();
super.onPause();
}
@Override
public void onResume() {
mClockThread.resumeRun();
super.onResume();
}
@Override
public void onStop() {
mClockThread.stopRun();
super.onStop();
}
@Override
public void draw(Canvas canvas) {
super.draw(canvas);
mIsShowInScreen = true;
// mPaint.setColor(Color.WHITE);
// canvas.drawCircle(mRect.centerX(), mRect.centerY(), mRect.height()/2, mPaint);
// mPaint.setColor(Color.BLACK);
// canvas.drawLine(mRect.centerX(), 0, mRect.centerX(), 10, mPaint);
// canvas.drawLine(mRect.centerX(), mRect.height(), mRect.centerX(), mRect.height()-10, mPaint);
// canvas.drawLine(mRect.left, mRect.centerY(), mRect.left + 10, mRect.centerY(), mPaint);
// canvas.drawLine(mRect.right, mRect.centerY(), mRect.right-10, mRect.centerY(), mPaint);
drawIndicator(canvas);
// mPaint.setColor(Color.MAGENTA);
// canvas.drawCircle(mRect.centerX(), mRect.centerY(), 3, mPaint);
if(mClockThread.wait){
mClockThread.resumeRun();
}
}
/**
* draw Indicator
* @param canvas
* @param centerX
* @param centerY
* @param p
*/
private void drawIndicator(Canvas canvas){
mTime.setToNow();
// p.setStrokeWidth(2);
// p.setColor(Color.BLACK);
float hourAngle = (float)mTime.hour / 12 * 360 + (float)mTime.minute / 60 * (360 / 12);
float minAngle = (float)mTime.minute / 60 * 360;
float secAngle = (float)mTime.second / 60 * 360;
canvas.save();
canvas.drawBitmap(mBackground, mSrcRect, mDestRect, null);
canvas.restore();
canvas.save();
canvas.rotate(hourAngle, mIconSize / 2, mIconSize / 2);
canvas.drawBitmap(mHour, mWidthOffset, mHiegtOffset, null);
canvas.restore();
canvas.save();
canvas.rotate(minAngle, mIconSize / 2, mIconSize / 2);
canvas.drawBitmap(mMinute, mWidthOffset, mHiegtOffset, null);
canvas.restore();
canvas.save();
canvas.rotate(secAngle, mIconSize / 2, mIconSize / 2);
canvas.drawBitmap(mSecond, mWidthOffset, mHiegtOffset, null);
canvas.restore();
// canvas.drawLine(centerX, centerY,
// (int)(centerX + (mRect.width()/2-35) * Math.cos((mTime.hour+(float)mTime.minute/60) * (Math.PI / 6) - Math.PI / 2)),
// (int)(centerY + (mRect.width()/2-35) * Math.sin((mTime.hour+(float)mTime.minute/60) * (Math.PI / 6) - Math.PI / 2)), p);
// canvas.drawLine(centerX, centerY,
// (int)(centerX + (mRect.width()/2-50) * Math.cos((mTime.hour+(float)mTime.minute/60) * (Math.PI / 6) + Math.PI / 2)),
// (int)(centerY + (mRect.width()/2-50) * Math.sin((mTime.hour+(float)mTime.minute/60) * (Math.PI / 6) + Math.PI / 2)), p);
//// p.setColor(Color.GREEN);
// //分针
// canvas.drawLine(centerX, centerY,
// (int)(centerX + (mRect.width()/2-27) * Math.cos(mTime.minute * (Math.PI / 30) - Math.PI / 2)),
// (int)(centerY + (mRect.width()/2-27) * Math.sin(mTime.minute * (Math.PI / 30) - Math.PI / 2)),p);
// canvas.drawLine(centerX, centerY,
// (int)(centerX + (mRect.width()/2-48) * Math.cos(mTime.minute * (Math.PI / 30) + Math.PI / 2)),
// (int)(centerY + (mRect.width()/2-48) * Math.sin(mTime.minute * (Math.PI / 30) + Math.PI / 2)),p);
//// p.setColor(Color.RED);
// //秒针
// canvas.drawLine(centerX, centerY,
// (int)(centerX + (mRect.width()/2-24) * Math.cos(mTime.second * (Math.PI / 30) - Math.PI / 2)),
// (int)(centerY + (mRect.width()/2-24) * Math.sin(mTime.second * (Math.PI / 30) - Math.PI / 2)),p);
//// p.setStrokeWidth(3);
// canvas.drawLine(centerX, centerY,
// (int)(centerX + (mRect.width()/2-45) * Math.cos(mTime.second * (Math.PI / 30) + Math.PI/2)),
// (int)(centerY + (mRect.width()/2-45) * Math.sin(mTime.second * (Math.PI / 30) + Math.PI/2)),p);
}
class ClockThread extends Thread {
int times = 0;
boolean running = true;
public boolean wait = false;
public void stopRun() {
running = false;
synchronized (this) {
this.notify();
}
};
public void pauseRun() {
this.wait = true;
synchronized (this) {
this.notify();
}
}
public void resumeRun() {
this.wait = false;
synchronized (this) {
this.notify();
}
}
public void run() {
while (running) {
synchronized (mView) {
mView.postInvalidate();
}
if(!mIsShowInScreen){
pauseRun();
}
mIsShowInScreen = false;
try {
Thread.sleep(500);
} catch (Exception e) {
System.out.println(e);
}
synchronized (this) {
if (wait) {
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
}
}