Android控件之使用ListView實現時間軸效果

 實現思路：

該View是通過ListView實現的，通過實體兩個字段內容content和時間time來展示每個ListItem

時間軸是使用上面一條線（20dp）和中間一個圓（15dp）和下面一條線（40dp）組裝成的

在ListView中，設置其分割線為空，並且沒有點擊效果

效果圖：

步驟一：使用xml畫出一個灰色的圓點（time_cycle.xml）

<?xml version="1.0" encoding="utf-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
android:shape="oval"> 
<solid android:color="#CBCBCB" /> 
<size 
android:width="15dp" 
android:height="15dp" /> 
</shape> 

步驟二：javabean的編寫

public class KuaiDi { 
private String content; 
private String time; 
public KuaiDi(String time, String content) { 
this.content = content; 
this.time = time; 
} 
public String getContent() { 
return content; 
} 
public void setContent(String content) { 
this.content = content; 
} 
public String getTime() { 
return time; 
} 
public void setTime(String time) { 
this.time = time; 
} 
}

步驟三：編寫子布局（time_item.xml）

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="75dp" 
android:orientation="horizontal"> 
<!--線條部分--> 
<LinearLayout 
android:layout_width="wrap_content" 
android:layout_height="match_parent" 
android:gravity="center_horizontal" 
android:orientation="vertical" 
android:paddingLeft="30dp"> 
<View 
android:layout_width="3dp" 
android:layout_height="20dp" 
android:background="#CBCBCB" /> 
<ImageView 
android:layout_width="15dp" 
android:layout_height="15dp" 
android:background="@drawable/time_cycle" /> 
<View 
android:layout_width="3dp" 
android:layout_height="40dp" 
android:background="#CBCBCB" /> 
</LinearLayout> 
<!--文字部分--> 
<LinearLayout 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
android:paddingLeft="30dp" 
android:paddingRight="30dp" 
android:paddingTop="20dp"> 
<TextView 
android:id="@+id/tv_content" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:text="【廣東省中國郵政集團公司深圳市龍華函件中心】已收寄" 
android:textColor="#ABABAB" /> 
<TextView 
android:id="@+id/tv_time" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:layout_below="@id/tv_content" 
android:text="2016-05-03 00:22:36" 
android:textColor="#ABABAB" /> 
</LinearLayout> 
</LinearLayout> 

其效果如圖：

步驟四：編寫父布局（activity_main.xml）

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent"> 
<ListView 
android:id="@+id/lv" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:divider="@null" 
android:listSelector="@android:color/transparent" /> 
</RelativeLayout> 

步驟五：編寫子布局的適配器（KuaiDiAdapter.java）

public class KuaiDiAdapter extends BaseAdapter { 
//印章數據 
private List<KuaiDi> list; 
private LayoutInflater mInflater; 
public KuaiDiAdapter(Context context, List<KuaiDi> list) { 
this.list = list; 
mInflater = LayoutInflater.from(context); 
} 
@Override 
public int getCount() { 
return list.size(); 
} 
@Override 
public Object getItem(int position) { 
return list.get(position); 
} 
@Override 
public long getItemId(int position) { 
return position; 
} 
@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
if (convertView == null) { 
convertView = mInflater.inflate(R.layout.time_item, null); 
} 
ViewHolder holder = getViewHolder(convertView); 
KuaiDi kd = list.get(position); 
holder.tv_content.setText(kd.getContent()); 
holder.tv_time.setText(kd.getTime()); 
return convertView; 
} 
/** 
* 獲得控件管理對象 
* 
* @param view 
* @return 
*/ 
private ViewHolder getViewHolder(View view) { 
ViewHolder holder = (ViewHolder) view.getTag(); 
if (holder == null) { 
holder = new ViewHolder(view); 
view.setTag(holder); 
} 
return holder; 
} 
/** 
* 控件管理類 
*/ 
private class ViewHolder { 
private TextView tv_content, tv_time; 
ViewHolder(View view) { 
tv_content = (TextView) view.findViewById(R.id.tv_content); 
tv_time = (TextView) view.findViewById(R.id.tv_time); 
} 
} 
}

步驟六：在父布局中設置適配器

public class MainActivity extends AppCompatActivity { 
private ListView lv; 
private KuaiDiAdapter adapter; 
private List<KuaiDi> list; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 
lv = (ListView) findViewById(R.id.lv); 
list =new ArrayList<>(); 
list.add(new KuaiDi("2016-09-18 08:33:50","您的訂單開始處理")); 
list.add(new KuaiDi("2016-09-18 08:40:23","您的訂單待配貨")); 
list.add(new KuaiDi("2016-09-18 08:51:33","您的包裹已出庫")); 
list.add(new KuaiDi("2016-09-18 21:12:53","【深圳市龍華函件中心】已收寄")); 
list.add(new KuaiDi("2016-09-18 17:44:20","到達【深圳】")); 
list.add(new KuaiDi("2016-09-18 21:26:51","離開【深圳市龍華函件中心】，下一站【深圳市】")); 
list.add(new KuaiDi("2016-09-18 23:18:21","到達【深圳市處理中心】")); 
list.add(new KuaiDi("2016-09-19 01:14:30","離開【深圳市處理中心】，下一站【廣州市】")); 
list.add(new KuaiDi("2016-09-19 04:42:11","到達【廣東省廣州郵件處理中心】")); 
adapter = new KuaiDiAdapter(this,list); 
lv.setAdapter(adapter); 
} 
}

以上所述是小編給大家介紹的Android控件之使用ListView實現時間軸效果，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對本站網站的支持！