自定义控件实现提示信息类

很多时候，需要在一些锁屏，动态墙纸，启动器中加入提示信息，比如时间，日期，短信，电话，电池等信息，封装成一个全屏的ＶＩＥＷ类，既可以当控件在静态布局中使用，也可以在动态布局中使用addＶiew加入，十分方便。支持文字和图片两种方式显示。

package com.example.scr;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import android.content.Context;import android.database.ContentObserver;import android.database.Cursor;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Typeface;import android.graphics.Paint.FontMetrics;import android.graphics.Paint.Style;import android.net.Uri;import android.os.Handler;import android.provider.CallLog.Calls;import android.util.Log;import android.view.MotionEvent;import android.view.View;class PromptMessageView extends View {private static final boolean isImg = false;private int scr_w = 0, scr_h = 0;Context mContext = null;ArrayList<Bitmap> BmWeek = new ArrayList<Bitmap>(12);ArrayList<Bitmap> BmTime = new ArrayList<Bitmap>(11);ArrayList<Bitmap> BmDate = new ArrayList<Bitmap>(8);protected String mcallstr = "未接电话：";protected String msmsstr = "未读短信：";protected int m_callcount = 0;// findMissedCallCount();protected int m_smscount = 0;// findNewSmsCount() + findNewMmsCount();// 圆心g_x, g_y,半径g_r, 手指位移m_lx, m_lypublic int g_r = 0;public void moveView(int gr) {g_r = gr;invalidate();}public PromptMessageView(Context context) {super(context);mContext = context;m_callcount = findMissedCallCount();m_smscount = findNewSmsCount() + findNewMmsCount();if (isImg) {decodeDate();decodeTime();decodeWeek();}context.getApplicationContext().getContentResolver().registerContentObserver(Uri.parse("content://mms-sms/"),true,new newMmsContentObserver(context.getApplicationContext(), new Handler()));context.getApplicationContext().getContentResolver().registerContentObserver(/* content://call_log/calls */android.provider.CallLog.Calls.CONTENT_URI,true,new MissedCallContentObserver(context.getApplicationContext(), new Handler()));}public PromptMessageView(Context context, int w, int h) {super(context);scr_w = w;scr_h = h;mContext = context;m_callcount = findMissedCallCount();m_smscount = findNewSmsCount() + findNewMmsCount();if (isImg) {decodeDate();decodeTime();decodeWeek();}context.getApplicationContext().getContentResolver().registerContentObserver(Uri.parse("content://mms-sms/"),true,new newMmsContentObserver(context.getApplicationContext(), new Handler()));context.getApplicationContext().getContentResolver().registerContentObserver(/* content://call_log/calls */android.provider.CallLog.Calls.CONTENT_URI,true,new MissedCallContentObserver(context.getApplicationContext(), new Handler()));}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {// TODO Auto-generated method stubsuper.onMeasure(widthMeasureSpec, heightMeasureSpec);}@Overrideprotected void onDraw(Canvas canvas) {// TODO Auto-generated method stubsuper.onDraw(canvas);if (!isImg) {// 设置字体Paint p = new Paint();p.setColor(Color.WHITE);p.setStrokeWidth(1);p.setStyle(Style.FILL);p.setTextSize(26);Typeface font = Typeface.create("黑体", Typeface.BOLD);p.setTypeface(font);// 显示时间boolean isFontMid = false; // 是否居中显示float str_left = 10.0f;p.setTextSize(120);SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");String time = sdf.format(new Date());time = time.substring(0, time.length() - 3);int fw = (int) p.measureText(time);FontMetrics fm = p.getFontMetrics();int fh = (int) Math.ceil(fm.descent - fm.top) + 2;if (isFontMid) {canvas.drawText(time, (scr_w - fw) / 2, 200 - g_r, p);} else {canvas.drawText(time, str_left, 200 - g_r, p);}// 显示星期sdf = new SimpleDateFormat("EEEE");String week = sdf.format(new Date());// 显示日期+星期p.setTextSize(20);sdf = new SimpleDateFormat("yyyy-MM-dd");String date = sdf.format(new Date());date = date.substring(5, date.length());date = date + "," + week;fw = (int) p.measureText(date);if (isFontMid) {canvas.drawText(date, (scr_w - fw) / 2, 200 + 30 - g_r, p);} else {canvas.drawText(date, str_left, 200 + 30 - g_r, p);}// 显示未接电话p.setTextSize(15);if (isFontMid) {canvas.drawText(mcallstr + String.valueOf(m_callcount),(scr_w - fw) / 2, 300 - g_r, p);} else {canvas.drawText(mcallstr + String.valueOf(m_callcount),str_left, 300 - g_r, p);}// 显示未读短信if (isFontMid) {canvas.drawText(msmsstr + String.valueOf(m_smscount),(scr_w - fw) / 2, 350 - g_r, p);} else {canvas.drawText(msmsstr + String.valueOf(m_smscount), str_left,320 - g_r, p);}} else {// 贴图实现// drawDate(tmpCanvas, 100, 500);// drawTime(tmpCanvas, 100, 400);// drawWeek(tmpCanvas, 300, 500);newDrawDate(canvas, 100, 500 - g_r);newDrawTime(canvas, 100, 400 - g_r);newDrawWeek(canvas, 300, 500 - g_r);}}// 监控电话数目private int findMissedCallCount() {int missedCallCount = 0;StringBuilder where = new StringBuilder("type = ");where.append(Calls.MISSED_TYPE);where.append(" AND new = 1");// start the queryCursor cur = null;try {cur = mContext.getApplicationContext().getContentResolver().query(Calls.CONTENT_URI, new String[] { Calls._ID },where.toString(), null, Calls.DEFAULT_SORT_ORDER);if (cur != null) {missedCallCount = cur.getCount();}} catch (Exception ex) {} finally {if (cur != null) {cur.close();}}return missedCallCount;}// 监控短信，彩信数目变化private int findNewSmsCount() {Cursor csr = null;int newSmsCount = 0;try {csr = mContext.getApplicationContext().getContentResolver().query(Uri.parse("content://sms"), null,"type = 1 and read = 0", null, null);newSmsCount = csr.getCount(); // 未读短信数目} catch (Exception e) {e.printStackTrace();} finally {if (csr != null)csr.close();}return newSmsCount;}// 监控短信，短信数目变化private int findNewMmsCount() {Cursor csr = null;int newMmsCount = 0;try {csr = mContext.getApplicationContext().getContentResolver().query(Uri.parse("content://mms/inbox"), null, "read = 0",null, null);newMmsCount = csr.getCount();// 未读彩信数目} catch (Exception e) {e.printStackTrace();} finally {if (csr != null)csr.close();}return newMmsCount;}// 监控信息数据库public class newMmsContentObserver extends ContentObserver {private Context ctx;private Handler m_handler;int newMmsCount = 0;int newSmsCount = 0;public newMmsContentObserver(Context context, Handler handler) {super(handler);ctx = context;m_handler = handler;}@Overridepublic void onChange(boolean selfChange) {newMmsCount = findNewSmsCount();newSmsCount = findNewMmsCount();Log.i("@@@@@", "newSmsCount = " + (newSmsCount + newMmsCount));m_smscount = newMmsCount + newSmsCount;postInvalidate();}}// 监控电话数据库public class MissedCallContentObserver extends ContentObserver {private Context ctx;int missedCallCount = 0;private Handler m_handler;private static final String TAG = "MissedCallContentObserver";public MissedCallContentObserver(Context context, Handler handler) {super(handler);ctx = context;m_handler = handler;}@Overridepublic void onChange(boolean selfChange) {missedCallCount = findMissedCallCount();Log.i("@@@@@", "missedCallCount = " + missedCallCount);m_callcount = missedCallCount;postInvalidate();}}public void decodeDate() {Bitmap bm = null;int[] imgIds = { R.drawable.r011, R.drawable.r111, R.drawable.r211,R.drawable.r311, R.drawable.r411, R.drawable.r511,R.drawable.r611, R.drawable.r711, R.drawable.r811,R.drawable.r911, R.drawable.hy11, R.drawable.h711, };for (int i = 0; i < imgIds.length; i++) {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[i]);BmDate.add(bm);// BmDate[i] = bm;}}public void newDrawDate(Canvas canvas, int x, int y) {Bitmap bm = null;int pos = x;SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");String date = sdf.format(new Date());date = date.substring(5, date.length());// canvas.drawText(date, x, y, null);for (int i = 0; i < date.length(); i++) {if (date.charAt(i) == '-') {bm = BmDate.get(10);// bm = BmDate[10];} else {bm = BmDate.get(date.charAt(i) - '0');// bm = BmDate[date.charAt(i) - '0'];}canvas.drawBitmap(bm, pos, y, null);pos += bm.getWidth();}bm = BmDate.get(11);// bm = BmDate[11];canvas.drawBitmap(bm, pos, y, null);}public void drawDate(Canvas canvas, int x, int y) {Bitmap bm = null;int[] imgIds = { R.drawable.r011, R.drawable.r111, R.drawable.r211,R.drawable.r311, R.drawable.r411, R.drawable.r511,R.drawable.r611, R.drawable.r711, R.drawable.r811,R.drawable.r911, R.drawable.hy11, R.drawable.h711, };int pos = x;SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");String date = sdf.format(new Date());date = date.substring(5, date.length());// canvas.drawText(date, x, y, null);for (int i = 0; i < date.length(); i++) {if (date.charAt(i) == '-') {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[10]);} else {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[date.charAt(i) - '0']);}canvas.drawBitmap(bm, pos, y, null);pos += bm.getWidth();}bm = BitmapFactory.decodeResource(mContext.getResources(), imgIds[11]);canvas.drawBitmap(bm, pos, y, null);}public void decodeTime() {Bitmap bm = null;int[] imgIds = { R.drawable.time_0, R.drawable.time_1,R.drawable.time_2, R.drawable.time_3, R.drawable.time_4,R.drawable.time_5, R.drawable.time_6, R.drawable.time_7,R.drawable.time_8, R.drawable.time_9, R.drawable.time_dot };for (int i = 0; i < imgIds.length; i++) {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[i]);BmTime.add(bm);}}public void newDrawTime(Canvas canvas, int x, int y) {Bitmap bm = null;int pos = x;SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");String date = sdf.format(new Date());date = date.substring(5, date.length());// canvas.drawText(date, x, y, null);for (int i = 0; i < date.length(); i++) {if (date.charAt(i) == '-') {bm = BmTime.get(10);} else {bm = BmTime.get(date.charAt(i) - '0');}canvas.drawBitmap(bm, pos, y, null);pos += bm.getWidth();}}public void drawTime(Canvas canvas, int x, int y) {Bitmap bm = null;int[] imgIds = { R.drawable.time_0, R.drawable.time_1,R.drawable.time_2, R.drawable.time_3, R.drawable.time_4,R.drawable.time_5, R.drawable.time_6, R.drawable.time_7,R.drawable.time_8, R.drawable.time_9, R.drawable.time_dot };int pos = x;SimpleDateFormat sdf = new SimpleDateFormat("HH-mm-ss");String time = sdf.format(new Date());time = time.substring(0, time.length() - 3);// canvas.drawText(time, x, y, null);for (int i = 0; i < time.length(); i++) {if (time.charAt(i) == '-') {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[10]);} else {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[time.charAt(i) - '0']);}canvas.drawBitmap(bm, pos, y, null);pos += bm.getWidth();}}public void decodeWeek() {Bitmap bm = null;int[] imgIds = { R.drawable.h111, R.drawable.h211, R.drawable.h311,R.drawable.h411, R.drawable.h511, R.drawable.h611,R.drawable.h711, R.drawable.hxq11 };for (int i = 0; i < imgIds.length; i++) {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[i]);BmWeek.add(bm);}}public void newDrawWeek(Canvas canvas, int x, int y) {Bitmap bm = null;String[] weeks = { "星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日" };int pos = x;SimpleDateFormat sdf = new SimpleDateFormat("EEEE");String week = sdf.format(new Date());// canvas.drawText(week, x, y, null);bm = BmWeek.get(7);canvas.drawBitmap(bm, pos, y, null);pos += bm.getWidth();for (int i = 0; i < weeks.length; i++) {if (weeks[i].equals(week)) {bm = BmWeek.get(i);canvas.drawBitmap(bm, pos, y, null);break;}}}public void drawWeek(Canvas canvas, int x, int y) {Bitmap bm = null;String[] weeks = { "星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日" };int[] imgIds = { R.drawable.h111, R.drawable.h211, R.drawable.h311,R.drawable.h411, R.drawable.h511, R.drawable.h611,R.drawable.h711, R.drawable.hxq11 };int pos = x;SimpleDateFormat sdf = new SimpleDateFormat("EEEE");String week = sdf.format(new Date());// canvas.drawText(week, x, y, null);bm = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.hxq11);canvas.drawBitmap(bm, pos, y, null);pos += bm.getWidth();for (int i = 0; i < weeks.length; i++) {if (weeks[i].equals(week)) {bm = BitmapFactory.decodeResource(mContext.getResources(),imgIds[i]);canvas.drawBitmap(bm, pos, y, null);break;}}}public void onViewDestroy() {// TODO Auto-generated method stubmContext.getContentResolver().unregisterContentObserver(new newMmsContentObserver(mContext.getApplicationContext(),new Handler()));mContext.getContentResolver().unregisterContentObserver(new MissedCallContentObserver(mContext.getApplicationContext(),new Handler()));}}