android自定義倒計時控件示例

這篇文章主要介紹了Android秒殺倒計時自定義TextView示例，大家參考使用吧

自定義TextView控件TimeTextView代碼：

復制代碼代碼如下:

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Paint;
import android.text.Html;
import android.util.AttributeSet;
import android.widget.TextView;

import com.new0315.R;
/**
?* 自定義倒計時文本控件
?* @author Administrator
?*
?*/
public class TimeTextView extends TextView implements Runnable{

??? Paint mPaint; //畫筆,包含了畫幾何圖形、文本等的樣式和顏色信息

??? private long[] times;

??? private long mday, mhour, mmin, msecond;//天，小時，分鐘，秒

??? private boolean run=false; //是否啟動了

??? public TimeTextView(Context context, AttributeSet attrs) {
??????? super(context, attrs);
??????? mPaint=new Paint();
??????? TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.TimeTextView);

??????? array.recycle(); //一定要調用，否則這次的設定會對下次的使用造成影響
??? }

??? public TimeTextView(Context context, AttributeSet attrs, int defStyle) {
??????? super(context, attrs, defStyle);
??????? mPaint=new Paint();
??????? TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.TimeTextView);

??????? array.recycle(); //一定要調用，否則這次的設定會對下次的使用造成影響
??? }

??? public TimeTextView(Context context) {
??????? super(context);
??? }

??? public long[] getTimes() {
??????? return times;
??? }

??? public void setTimes(long[] times) {
??????? this.times = times;
??????? mday = times[0];
??????? mhour = times[1];
??????? mmin = times[2];
??????? msecond = times[3];

??? }

??? /**
???? * 倒計時計算
???? */
??? private void ComputeTime() {
??????? msecond--;
??????? if (msecond < 0) {
??????????? mmin--;
??????????? msecond = 59;
??????????? if (mmin < 0) {
??????????????? mmin = 59;
??????????????? mhour--;
??????????????? if (mhour < 0) {
??????????????????? // 倒計時結束
??????????????????? mhour = 59;
??????????????????? mday--;

??????????????? }
??????????? }

??????? }

??? }

??? public boolean isRun() {
??????? return run;
??? }

??? public void setRun(boolean run) {
??????? this.run = run;
??? }

??? @Override
??? public void run() {
??????? //標示已經啟動
??????? run=true;

??????? ComputeTime();

??????? String strTime="還剩</pre>
"+mday+"
<pre>"+"天</pre>
"+mhour+"
<pre>小時</pre>
"+
?mmin+"
<pre>分鐘</pre>
"+msecond+"
<pre>秒";
??????? this.setText(Html.fromHtml(strTime));

??????? postDelayed(this, 1000);

??? }

}

屬性atts.xml

復制代碼代碼如下:

<declare-styleable name="TimeTextView">
</declare-styleable>

Adapter調用代碼：

復制代碼代碼如下:

import java.text.DecimalFormat;
import java.util.List;

import android.content.Context;
import android.graphics.Paint;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.new0315.R;
import com.new0315.entity.SpecialGoods;
import com.new0315.utils.CorrectSpecialDataFormHttp;
import com.new0315.utils.DateTools;
import com.new0315.widgets.TimeTextView;
import com.nostra13.universalimageloader.core.ImageLoader;

public class SpecialGoodsAdapter extends BaseAdapter {

??? private Context context;
??? private List list;
??? private long sumTime;

??? public SpecialGoodsAdapter(Context context) {

??????? this.context = context;
??? }

??? public void setList(List list) {
??????? this.list = list;
??? }

??? @Override
??? public int getCount() {
??????? // TODO Auto-generated method stub
??????? return list.size();
??? }

??? @Override
??? public Object getItem(int arg0) {
??????? // TODO Auto-generated method stub
??????? return null;
??? }

??? @Override
??? public long getItemId(int arg0) {
??????? // TODO Auto-generated method stub
??????? return 0;
??? }

??? @Override
??? public View getView(int arg0, View convertView, ViewGroup arg2) {
??????? //開始計時，性能測試用nanoTime會更精確，因為它是納秒級的
??????? long startTime = System.nanoTime();
??????? Log.d("position","getView " + arg0 + " " + convertView);
??????? ViewHolder viewHolder;
??????? if(convertView == null)
??????? {
??????????? convertView = LayoutInflater.from(context).inflate(
??????????????????? R.layout.item_temai_list, null);
??????????? viewHolder = new ViewHolder();
??????????? viewHolder.goodName = (TextView) convertView
??????????????????? .findViewById(R.id.temai_Name);
??????????? viewHolder.price = (TextView) convertView
??????????????????? .findViewById(R.id.temai_yuanjia_text);

??????????? viewHolder.specialPrice = (TextView) convertView
??????????????????? .findViewById(R.id.temai_xiajia_text);
??????????? //特賣倒計時控件
??????????? viewHolder.mTimeText = (TimeTextView) convertView
??????????????????? .findViewById(R.id.temai_timeTextView);

??????????? viewHolder.showDate = (TextView) convertView
??????????????????? .findViewById(R.id.index_temai_day);
??????????? viewHolder.showDate_l = (LinearLayout) convertView
??????????????????? .findViewById(R.id.temai_weikaishi);
??????????? viewHolder.showTime = (LinearLayout) convertView
??????????????????? .findViewById(R.id.temai_yikaishi);
??????????? viewHolder.koukou = (TextView) convertView
??????????????????? .findViewById(R.id.temai_zhekou_text);
??????????? viewHolder.image = (ImageView) convertView
??????????????????? .findViewById(R.id.index_temai_image);
??????????? Log.d("GoogleIO","new position:"+viewHolder.goodName.getText());

??????????? convertView.setTag(viewHolder);

??????? }else {
??????????? viewHolder = (ViewHolder) convertView.getTag();
??????????? resetViewHolder(viewHolder);
??????? }
??????? //setData
??????? String off = getOff(list.get(arg0).getGoods_Price(), list.get(arg0)
??????????????? .getGoods_SpecialPrice());
??????? viewHolder.goodName.setText(list.get(arg0).getGoods_Name());
??????? viewHolder.price.setText(list.get(arg0).getGoods_Price());
??????? viewHolder.price.getPaint().setFlags(
??????????????? Paint.STRIKE_THRU_TEXT_FLAG | Paint.ANTI_ALIAS_FLAG);
??????? viewHolder.specialPrice.setText(list.get(arg0).getGoods_SpecialPrice());
??????? viewHolder.koukou.setText(off + "折");

??????? if (DateTools.isStart(list.get(arg0).getSpecialFrom())) {
??????????? //特賣倒計時開始
??????????? viewHolder.mTimeText.setTimes(DateTools.getDate(CorrectSpecialDataFormHttp
??????????????????? .correctData((list.get(arg0).getSpecialEnd()))));
??????????? //已經在倒計時的時候不再開啟計時
??????????? if(!viewHolder.mTimeText.isRun())
??????????? {
??????????????? viewHolder.mTimeText.run();
??????????? }
??????????? viewHolder.showDate_l.setVisibility(View.GONE);
??????????? viewHolder.showTime.setVisibility(View.VISIBLE);
??????? } else {
??????????? viewHolder.showTime.setVisibility(View.GONE);
??????????? viewHolder.showDate_l.setVisibility(View.VISIBLE);
??????????? viewHolder.showDate.setText(DateTools.getDay(list.get(arg0).getSpecialFrom())
??????????????????? + "");
??????? }

??????? ImageLoader.getInstance().displayImage(list.get(arg0).getGoods_Pic(),viewHolder.image);

??????? //停止計時
??????? long endTime = System.nanoTime();
??????? //耗時
??????? long spendTime = (endTime - startTime);

??????? sumTime += spendTime;
//??????? Log.d("GoogleIO", "position at:"+arg0+"--sumTime:"+String.valueOf(sumTime));
??????? return convertView;
??? }

??? public String getOff(String price, String specialPrice) {

??????? double off = Double.parseDouble(specialPrice)
??????????????? / Double.parseDouble(price) * 10;

??????? DecimalFormat df = new DecimalFormat("0.0");
??????? String off_String = df.format(off);

??????? if (off_String.equals("NaN") || off_String.equals("1")) {
??????????? off_String = "10";
??????? }
??????? return off_String;
??? }

??? static class ViewHolder {
??????? ImageView image;
??????? TextView goodName;
??????? TextView price;
??????? TextView specialPrice;
??????? TextView koukou;
??????? TimeTextView mTimeText;
??????? TextView showDate;
??????? LinearLayout showDate_l;
??????? LinearLayout showTime;

??? }

??? protected void resetViewHolder(ViewHolder viewHolder) {
??????? viewHolder.image.setImageBitmap(null);
??????? viewHolder.goodName.setText("");
??????? viewHolder.price.setText("");
??????? viewHolder.specialPrice.setText("");
??????? viewHolder.koukou.setText("");
??????? viewHolder.mTimeText.setText("");
??????? viewHolder.showDate.setText("");

??? }
}

layout使用代碼

復制代碼代碼如下:

<com.new0315.widgets.TimeTextView
android:id="@+id/temai_timeTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@android:color/black"
android:textSize="@dimen/small_text_size"
/>

</LinearLayout>
</RelativeLayout>