关于android自定义日期输出格式的例子

最新推荐文章于 2022-09-07 20:51:54 发布

转载最新推荐文章于 2022-09-07 20:51:54 发布 · 3.6k 阅读

文章标签：

#android #string #calendar #resources #class #system

本文介绍了一种在Android中自定义数字时钟显示格式的方法，包括12小时制和24小时制两种格式的切换，并提供了完整的代码实现。

关于android自定义日期输出格式的例子，很不错。

只作自己学习之用，详细请访问原出处。

本文转自： http://tech.cncms.com/shouji/android/50490.html

package com.test; import java.util.Calendar; import android.content.Context; import android.content.res.Resources; import android.database.ContentObserver; import android.os.Handler; import android.os.SystemClock; import android.provider.Settings; import android.text.format.DateFormat; import android.util.AttributeSet; /** * * 自定义DigitalClock输出格式 * * @author 农民伯伯 * * */ public class DigitalClock extends android.widget.DigitalClock { Calendar mCalendar; private final static String m12 = "h:mm aa";// h:mm:ss aa private final static String m24 = "k:mm";// k:mm:ss private FormatChangeObserver mFormatChangeObserver; private Runnable mTicker; private Handler mHandler; private boolean mTickerStopped = false; String mFormat; public DigitalClock(Context context) { super(context); initClock(context); } public DigitalClock(Context context, AttributeSet attrs) { super(context, attrs); initClock(context); } private void initClock(Context context) { Resources r = context.getResources(); if (mCalendar == null) { mCalendar = Calendar.getInstance(); } mFormatChangeObserver = new FormatChangeObserver(); getContext().getContentResolver().registerContentObserver( Settings.System.CONTENT_URI, true, mFormatChangeObserver); setFormat(); } @Override protected void onAttachedToWindow() { mTickerStopped = false; super.onAttachedToWindow(); mHandler = new Handler(); /** * * requests a tick on the next hard-second boundary */ mTicker = new Runnable() { public void run() { if (mTickerStopped) return; mCalendar.setTimeInMillis(System.currentTimeMillis()); invalidate(); long now = SystemClock.uptimeMillis(); long next = now + (1000 - now % 1000); mHandler.postAtTime(mTicker, next); } }; mTicker.run(); } @Override protected void onDetachedFromWindow() { super.onDetachedFromWindow(); mTickerStopped = true; } /** * * Pulls 12/24 mode from system settings */ private boolean get24HourMode() { return android.text.format.DateFormat.is24HourFormat(getContext()); } private void setFormat() { if (get24HourMode()) { mFormat = m24; } else { mFormat = m12; } } private class FormatChangeObserver extends ContentObserver { public FormatChangeObserver() { super(new Handler()); } @Override public void onChange(boolean selfChange) { setFormat(); } } }