经常使用的自己定义UI组件- 一：TimeView

近期做蛋疼的机顶盒项目，以后遇到哪些经常使用的组件，记录于此。

反编译 youku视频TV偷来的。。也希望各位童鞋多学习别人的代码，为己所用。

当然还有其它的办法，比方监听系统发出的广播等等。等有时间再把那个贴上来。

效果图：右上角的时间

http://img.blog.csdn.net/20140630144648750?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGVlaHUxOTg3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center

TimeView.java

package com.youku.tv.widget;

import android.content.Context;

import android.os.Handler;

import android.os.Message;

import android.util.AttributeSet;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.LinearLayout;

import android.widget.TextView;

import java.util.Calendar;

import java.util.Date;

public class TimeView extends LinearLayout{

class ClockHandler extends Handler {

private void post()

        {

            sendMessageDelayed(obtainMessage(0), 1000 * (60 - Calendar.getInstance().get(13)));

        }

public void handleMessage(Message message){

            super.handleMessage(message);

            if(!mStopped){

                updateClock();

                post();

            }

        }

public void startScheduleUpdate(){

            mStopped = false;

            post();

        }

public void stopScheduleUpdate(){

            mStopped = true;

            removeMessages(0);

        }

private boolean mStopped;

final TimeView this$0;

ClockHandler(){

            super();

            this$0 = TimeView.this;

        }

    }

public TimeView(Context context, AttributeSet attributeset){

        super(context, attributeset);

        mContext = getContext();

        ((LayoutInflater)context.getSystemService("layout_inflater")).inflate(R.layout.time_simple, this);

        mHour = (TextView)findViewById(R.id.system_hour);

        mMinute = (TextView)findViewById(R.id.system_minute);

        mClockUpdater = new ClockHandler();

    }

protected void onAttachedToWindow(){

        super.onAttachedToWindow();

        updateClock();

        mClockUpdater.startScheduleUpdate();

    }

protected void onDetachedFromWindow(){

        super.onDetachedFromWindow();

        mClockUpdater.stopScheduleUpdate();

    }

protected void onVisibilityChanged(View view, int i)

    {

        super.onVisibilityChanged(view, i);

    }

void updateClock()

    {

        Calendar calendar = Calendar.getInstance();

        calendar.setTime(new Date());

        int k = calendar.get(5);

        int l = calendar.get(11);

        int i1 = calendar.get(12);

        if(mHour != null)

        {

            TextView textview2 = mHour;

            Object aobj2[] = new Object[1];

            aobj2[0] = Integer.valueOf(l);

            textview2.setText(String.format("%2d:", aobj2));

        }

        if(mMinute != null)

            if(i1 < 10)

            {

                TextView textview1 = mMinute;

                Object aobj1[] = new Object[1];

                aobj1[0] = Integer.valueOf(i1);

                textview1.setText(String.format("0%d", aobj1));

            } else

            {

                TextView textview = mMinute;

                Object aobj[] = new Object[1];

                aobj[0] = Integer.valueOf(i1);

                textview.setText(String.format("%2d", aobj));

            }

        invalidate();

    }

private static final String TAG = "TimeView";

    private ClockHandler mClockUpdater;

    private Context mContext;

    private TextView mHour;

    private TextView mMinute;

}

time_simple.xml布局文件

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="wrap_content"

android:layout_height="wrap_content" >

</RelativeLayout>