android自定義倒計時控件示例

2020-04-11 11:55:35

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自定義TextView控件TimeTextView代碼：

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>