经常使用的自己定义UI组件- 一：TimeView

大家好，又见面了，我是全栈君，祝每个程序员都可以多学几门语言。

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

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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(“-:”, 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(“-”, 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” >

<TextView android:id=”@id/system_minute” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_alignParentRight=”true” android:text=”01″ android:textColor=”@color/timecolor” android:textSize=”@dimen/px42″ />

<TextView android:id=”@id/system_hour” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_toLeftOf=”@id/system_minute” android:text=”55″ android:textColor=”@color/timecolor” android:textSize=”@dimen/px42″ />

</RelativeLayout>

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