安卓：DigitalClock删除秒 [英] Android: DigitalClock remove seconds

问题描述

我用这个code增加一个时钟，我的应用程序：

I used this code for adding a clock to my app:

  <DigitalClock 
android:id="@+id/digitalclock"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:textSize = "30sp"
/>

现在的问题是，它也显示了seconds..there被用于隐藏那些简单而快速的方式？我需要在HH几个小时和分钟：mm格式，而不是HH：MM：SS！有什么建议么？谢谢！

The problem is that it shows also seconds..there is a simple and fast way for hide those? I need just hours and minutes in hh:mm format instead of hh:mm:ss! any suggestions? Thanks!

推荐答案

在这里找到了答案 < /一>，为别人找工作的答案，那就是：

Found the answer here, for anyone else looking for a working answer, here it is:

1. 克隆/复制 DigitalClock.java 从Android源

2. 中的新变化格式字符串 CustomDigitalClock

1. Clone/copy DigitalClock.java from android source

2. Change format strings within new CustomDigitalClock

package com.example;

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;
import android.widget.TextView;

import java.util.Calendar;

/**
 * You have to make a clone of the file DigitalClock.java to use in your application, modify in the following manner:-
 *      private final static String m12 = "h:mm aa";
 *      private final static String m24 = "k:mm";
 */

public class CustomDigitalClock extends TextView {

    Calendar mCalendar;
    private final static String m12 = "h:mm aa";
    private final static String m24 = "k:mm";
    private FormatChangeObserver mFormatChangeObserver;

    private Runnable mTicker;
    private Handler mHandler;

    private boolean mTickerStopped = false;

    String mFormat;

    public CustomDigitalClock(Context context) {
        super(context);
        initClock(context);
    }

    public CustomDigitalClock(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());
                    setText(DateFormat.format(mFormat, mCalendar));
                    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();
        }
    }

}

在布局XML参考定制类

Reference custom class within in layout xml

<com.example.CustomDigitalClock
    android:id="@+id/fragment_clock_digital"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="DigitalClock" />

活动/片段中加载CustomDigitalClock

Load CustomDigitalClock within activity/fragment

CustomDigitalClock dc = (CustomDigitalClock)
mFragmentView.findViewById(R.id.fragment_clock_digital);

这篇关于安卓：DigitalClock删除秒的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！