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Android基于CountDownView的時(shí)間控件擴(kuò)展

更新時(shí)間：2017年02月08日 14:21:14 作者：騎蝸?？词澜?

這篇文章主要為大家詳細(xì)介紹了Android基于CountDownView的時(shí)間控件擴(kuò)展，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

首先，新年的一年里祝大家，心想事成，雞年大吉。去年的時(shí)候，我們做時(shí)間控件的時(shí)候一直遺留一個(gè)問題那就是正計(jì)時(shí)控件一直沒有好的解決方案，我們很想把CountDownView既支持正計(jì)時(shí)又能支持倒計(jì)時(shí)?；谶@個(gè)想法，便有了今天這篇文章，原理不在介紹，其實(shí)很簡(jiǎn)單，主要是我們知道怎么用，此控件的優(yōu)點(diǎn)有：

* 實(shí)現(xiàn)了正計(jì)時(shí)倒計(jì)時(shí)的統(tǒng)一
* 優(yōu)化了Adapter,不再綁定控件Id
* 一個(gè)屬性實(shí)現(xiàn)正倒計(jì)時(shí)
* 不在為具體的時(shí)間屬性設(shè)置別名

具體用法

1、xml文件

屬性 app:isCountUp=”false”代表倒計(jì)時(shí) true為正計(jì)時(shí)

<com.delta.library.CountTimeView
    android:id="@+id/cv_countView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_gravity="center_horizontal"
    android:layout_marginTop="20dp"
    app:isCountUp="false"
    app:isShowDay="true"
    app:isShowHour="true"
    app:isShowMillisecond="false"
    app:isShowMinute="true"
    app:isShowSecond="true"
    app:suffixDay="天"
    app:suffixDayRightMargin="10dp"
    app:suffixGravity="center"
    app:suffixHour=":"
    app:suffixMinute=":"
    app:suffixTextColor="#e61010"
    app:suffixTextSize="17sp"
    app:timeTextColor="#e60b0b"
    app:timeTextSize="20sp" />

2、實(shí)體類

要繼承TimeEntity
eg:

package com.delta.counttimeview;

/**
 * @description :正計(jì)時(shí)的
 * @autHor : V.Wenju.Tian
 * @date : 2017/2/6 15:31
 */


public class ItemEntity extends TimeEntity {

  private String title;

  private Long time;

  public ItemEntity() {
  }

  public ItemEntity(int id, long endTime, long createTime, String title, Long upTime) {
    super(id, endTime, createTime);
    this.title = title;
    this.time = upTime;
  }

  public Long getTime() {
    return time;
  }

  public void setTime(Long time) {
    this.time = time;
  }

  public void setTitle(String title) {
    this.title = title;
  }

  public String getTitle() {
    return title;
  }
}

3、Adapter如下

倒計(jì)時(shí) 主要是==要注意在數(shù)據(jù)源的時(shí)候初始化endTime屬性，也就是截止時(shí)間還有相應(yīng)的EntityId==

public class CountDownActivity extends AppCompatActivity {


  private RecyclerView rv;
  private List<ItemEntity> datas = new ArrayList<>();
  private ItemCountViewAdapter<ItemEntity> mMyAdapter;

  @Override
  public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_count_down);
    rv = ((RecyclerView) findViewById(R.id.rv));
    long time =System.currentTimeMillis();
    for (int i = 0; i < 100; i++) {
      ItemEntity entity = new ItemEntity();
      entity.setEntityId(i);
      entity.setTitle("第" + i);
      entity.setTime(i *60 *1000l);
      entity.setEndTime(time + entity.getTime());
      datas.add(entity);
    }
    mMyAdapter = new ItemCountViewAdapter<ItemEntity>(this, datas) {
      @Override
      protected int getCountViewId() {
        return R.id.cv_countView;
      }

      @Override
      protected int getLayoutId() {
        return R.layout.item_count_down;
      }

      @Override
      protected void convert(ItemTimeViewHolder holder, ItemEntity itemEntity, int position) {

        holder.setText(R.id.tv_title, itemEntity.getTitle());
      }
    };
    rv.setLayoutManager(new LinearLayoutManager(this));
    rv.setAdapter(mMyAdapter);

  }

  @Override
  protected void onResume() {
    super.onResume();
    if (null != mMyAdapter) {
      mMyAdapter.startRefreshTime();
    }
  }

  @Override
  protected void onPause() {
    super.onPause();
    if (null != mMyAdapter) {
      mMyAdapter.cancelRefreshTime();
    }
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    if (null != mMyAdapter) {
      mMyAdapter.cancelRefreshTime();
    }
  }
}

正計(jì)時(shí) ==主要是在獲得數(shù)據(jù)源的時(shí)候初始化createTime,也就是起始時(shí)間和EntityId==

public class CountUpActivity extends AppCompatActivity {


  private RecyclerView rv;
  private List<ItemEntity> datas = new ArrayList<>();
  private ItemCountViewAdapter<ItemEntity> mMyAdapter;

  @Override
  public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_count_up);
    rv = ((RecyclerView) findViewById(R.id.rv));

    for (int i = 0; i < 100; i++) {
      ItemEntity entity = new ItemEntity();
      entity.setEntityId(i);
      entity.setTitle("第" + i);
      entity.setTime(i * 60 * 60 * 1000l);
      entity.setCreateTime(System.currentTimeMillis() - entity.getTime());
      datas.add(entity);
    }
    mMyAdapter = new ItemCountViewAdapter<ItemEntity>(this, datas) {
      @Override
      protected int getCountViewId() {
        return R.id.cv_countView;
      }

      @Override
      protected int getLayoutId() {
        return R.layout.list_item;
      }

      @Override
      protected void convert(ItemTimeViewHolder holder, ItemEntity itemEntity, int position) {

        holder.setText(R.id.tv_title, itemEntity.getTitle());
      }
    };
    rv.setLayoutManager(new LinearLayoutManager(this));
    rv.setAdapter(mMyAdapter);

  }
  @Override
  protected void onResume() {
    super.onResume();
    if (null != mMyAdapter) {
      mMyAdapter.startRefreshTime();
    }
  }

  @Override
  protected void onPause() {
    super.onPause();
    if (null != mMyAdapter) {
      mMyAdapter.cancelRefreshTime();
    }
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    if (null != mMyAdapter) {
      mMyAdapter.cancelRefreshTime();
    }
  }
}

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