Android版DailyInsist（四）——业务逻辑和数据操作RecordFragment

统计界面RecordFragment中的业务逻辑涉及到三个方面：新建任务，每日签到和删除任务。有上面三个中的任何一个操作时，统计界面都要做出相应的更新。其中删除操作在统计界面中进行。

这里参考了文章中实现自定义ListView的形式。

TaskBean类在上一篇文章中已经介绍过了，下面定义一个接口ITaskFinder：

public interface ITaskFinder {     List<TaskBean> findAllTask();}

接口中只有一个方法findAllTask，获取所有任务的列表。

接口实现类ITaskFinderImpl如下：

@EBeanpublic class ITaskFinderImpl implements ITaskFinder {     @RootContext     Context context;     private MyDatabaseHelper dbHelper = null;     @Override     public List<TaskBean> findAllTask() {            if ( dbHelper == null) {                 dbHelper = new MyDatabaseHelper( context, "di.db3", 1);           }            return DailyInsistDao. getTasks(dbHelper, 0, -1);     }}

因为RecordFragment要列出所有的任务并统计它们的信息，所以我们需要一个TaskItemAdapter来绑定数据到视图上，TaskItemView是列表项的视图，如下：

@EViewGroup(R.layout.task_item )public class TaskItemView extends LinearLayout {     @ViewById     TextView tv_rate, tv_item_title, tv_start_to_end;     @ViewById     LinearLayout ll_rec_rate, ll_main;     @StringRes     String rate;     @DrawableRes     Drawable orange_rec, blue_rec, gray_rec, btn_up, btn_down;     @ViewById     Button btn_toggle;     /*      * set toggle button to control show or hide delete part      */     @ViewById     RelativeLayout rl_del;     /*      * for delete      */     private int taskId;     public TaskItemView(Context context) {            super(context);     }     public void bind(TaskBean task) {            taskId = task.getTaskId();            /*            * show rate view            */            tv_rate.setText(String. format(rate, task.getCompleted(),                     task.getDuring()));            /*            * show title view            */            tv_item_title.setText(task.getContent());            /*            * show rectangle rate            */            ll_rec_rate.removeAllViews();            /*            * the task is finished            */            if (task.getCompleted() == task.getDuring()) {                 for ( int i = 0, count = task.getDuring(); i < count; i++) {                      ll_rec_rate.addView(getRegBackgroundByDrawable( ll_rec_rate,                                 orange_rec));                }           } else {                 /*                 * if the task is not finished, completed parts use blue rectangle                 * and rest use gray one                 */                 for ( int i = 0, count = task.getCompleted(); i < count; i++) {                      ll_rec_rate.addView(getRegBackgroundByDrawable( ll_rec_rate,                                 blue_rec));                }                 for ( int i = 0, count = task.getDuring() - task.getCompleted(); i < count; i++) {                      ll_rec_rate.addView(getRegBackgroundByDrawable( ll_rec_rate,                                 gray_rec));                }           }            /*            * set start to end date view            */            tv_start_to_end                     .setText(task.getStartDate() + " - " + task.getEndDate());     }     @SuppressWarnings("deprecation")     private TextView getRegBackgroundByDrawable(LinearLayout ll_rec_rate,                Drawable rec) {            /*            * set width, height, background and layout            */           TextView tv_rec = new TextView(getContext());           tv_rec.setWidth(Util. dip2px(getContext(), 7));           tv_rec.setHeight(Util. dip2px(getContext(), 7));           tv_rec. setBackgroundDrawable(rec);           LayoutParams lp = new LayoutParams(LayoutParams.WRAP_CONTENT ,                     LayoutParams. WRAP_CONTENT);           lp.setMargins(0, 0, Util. dip2px(getContext(), 5), 0);           tv_rec.setLayoutParams(lp);            return tv_rec;     }     @Click     protected void btn_del() {            new AlertDialog.Builder(getContext())                     .setMessage( "Sure to DELETE?")                     .setNegativeButton( "Cancel", null)                     .setPositiveButton( "DELETE",                                 new DialogInterface.OnClickListener() {                                      @Override                                      public void onClick(DialogInterface dialog,                                                 int which) {                                           deleteTask();                                     }                                }).create().show();     }     @SuppressWarnings("deprecation")     @Click     void ll_main() {            if ( rl_del.getVisibility() == View. GONE) {                 rl_del.setVisibility(View. VISIBLE);                 btn_toggle. setBackgroundDrawable(btn_up);           } else {                 rl_del.setVisibility(View. GONE);                 btn_toggle. setBackgroundDrawable(btn_down);           }     }     protected void deleteTask() {           DailyInsistDao. deleteTask(new MyDatabaseHelper(getContext(), "di.db3" ,                     1), taskId);           getContext().sendBroadcast( new Intent(Actions.ACTION_UPDATE_INFO ));     }}

删除任务后将发广播通知RecordFragment界面更新数据和界面。

列表项的布局task_item.xml如下：

<?xml version="1.0" encoding= "utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/ll_main"    android:layout_width= "match_parent"    android:layout_height= "wrap_content"    android:background="@android:color/white"    android:clickable="true"    android:orientation="vertical" >    <RelativeLayout        android:layout_width= "match_parent"        android:layout_height= "wrap_content"        android:layout_marginBottom="10dp" >        <TextView            android:id= "@+id/tv_rate"            android:layout_width= "wrap_content"            android:layout_height= "wrap_content"            android:layout_marginLeft= "30dp"            android:layout_marginTop= "10dp"            android:text= "@string/rate"            android:textColor= "@color/record_title_text_dark"            android:textSize= "@dimen/text_title" />        <TextView            android:id= "@+id/tv_item_title"            android:layout_width= "wrap_content"            android:layout_height= "wrap_content"            android:layout_alignBaseline="@+id/tv_rate"            android:layout_alignBottom= "@+id/tv_rate"            android:layout_marginLeft= "16dp"            android:layout_toRightOf= "@+id/tv_rate"            android:text= "@string/str_title"            android:textColor= "@color/record_title_text_dark"            android:textSize= "@dimen/text_subtitle" />        <Button            android:id= "@+id/btn_toggle"            android:layout_width= "25dp"            android:layout_height= "25dp"            android:layout_alignParentRight="true"            android:layout_centerVertical="true"            android:layout_marginRight= "25dp"            android:background= "@drawable/btn_down" />        <LinearLayout            android:id= "@+id/ll_rec_rate"            android:layout_width= "wrap_content"            android:layout_height= "wrap_content"            android:layout_below= "@+id/tv_rate"            android:layout_marginLeft= "30dp"            android:layout_marginTop= "7dp" >            <!-- <TextView -->            <!-- android:layout_width="7dp" -->            <!-- android:layout_height="7dp" -->            <!-- android:layout_marginRight="5dp" -->            <!-- android:background="@drawable/gray_rec" /> -->        </LinearLayout >    </RelativeLayout >    <RelativeLayout        android:id= "@+id/rl_del"        android:layout_width= "match_parent"        android:layout_height= "wrap_content"        android:layout_marginBottom="10dp"        android:visibility= "gone" >        <TextView            android:id= "@+id/tv_start_to_end"            android:layout_width= "wrap_content"            android:layout_height= "wrap_content"            android:layout_alignParentLeft="true"            android:layout_centerVertical="true"            android:layout_marginLeft= "30dp"            android:text= "@string/str_something"            android:textColor= "@color/record_title_text_dark"            android:textSize= "@dimen/text_subtitle" />        <Button            android:id= "@+id/btn_del"            style= "@style/btn_del_style"            android:layout_width= "81dp"            android:layout_height= "37dp"            android:layout_alignParentRight="true"            android:layout_centerVertical="true"            android:layout_marginRight= "30dp"            android:background= "@drawable/orange_del_button"            android:text= "@string/str_delete" />    </RelativeLayout ></LinearLayout>

TaskItemAdapter适配器直接操作ITaskFinder接口的实现类获取任务列表，然后绑定数据，创建相应视图：

@EBeanpublic class TaskItemAdapter extends BaseAdapter {     @RootContext     Context context;     @Bean(ITaskFinderImpl. class)     ITaskFinder iTaskFinder;     private List<TaskBean> taskList;     @AfterInject     void initAdapter() {            taskList = iTaskFinder.findAllTask();     }     /**      *      * @Method: getView      * @Description: The adapter directly manipulates task list to bind its data      *               and create the corresponding views      * @param pos      * @param convertView      * @param parent      * @return      * @see android.widget.Adapter#getView(int, android.view.View,      *      android.view.ViewGroup)      */     @Override     public View getView( int pos, View convertView, ViewGroup parent) {           TaskItemView taskItemView;            if (convertView == null) {                taskItemView = TaskItemView_. build(context);           } else {                taskItemView = (TaskItemView) convertView;           }           taskItemView.bind(getItem(pos));            return taskItemView;     }     @Override     public int getCount() {            return taskList.size();     }     @Override     public TaskBean getItem( int pos) {            return taskList.get(pos);     }     @Override     public long getItemId( int pos) {            return pos;     }     /**      *      * @Method: resetTaskList      * @Description: reset the task list to update the listview      * @param @param taskList      * @return void      * @throws      */     public void resetTaskList(List<TaskBean> taskList) {            this. taskList.clear();            this. taskList.addAll(taskList);            this.notifyDataSetChanged();     }}

使用这种方法的话就不需要View Holder 模式了

resetTaskList方法用来重置数据后刷新界面。

最后就是RecordFragment了，实现了具体的功能：

@EFragment(R.layout.frag_record )public class RecordFragment extends BaseFragment {     private MyDatabaseHelper dbHelper = null;     @ViewById     TextView tv_rounds, tv_completed_tasks, tv_days;     @ViewById     ListView lv_task_list;     @Bean     TaskItemAdapter adapter;     @AfterViews     void initAdapter() {            if ( dbHelper == null) {                 dbHelper = new MyDatabaseHelper(this.getActivity(), "di.db3" , 1);           }            lv_task_list.setAdapter( adapter);           updateInfo();           registerUpdateInfoReceiver();     }     @Override     public void show() {            initView();     }     @Pref     GlobalPrefBean_ globalPrefBean;     void initView () {            boolean changed = globalPrefBean.changed().get();            if (changed) {                 /*                 * update Fragment                 */                updateInfo();           }     }     private void updateInfo() {            /*            * get data from local database            */           List<TaskBean> taskList = DailyInsistDao.getTasks(dbHelper, 0, -1);            /*            * update UI            */            tv_rounds.setText(taskList.size() + "");            int completedTasks = 0, completedDays = 0;            for (TaskBean task : taskList) {                 if (task.getCompleted() == task.getDuring()) {                     completedTasks++;                }                completedDays += task.getCompleted();           }            tv_completed_tasks.setText(completedTasks + "");            tv_days.setText(completedDays + "");            /*            * reset adapter            */            adapter.resetTaskList(taskList);     }     /**      *      * @ClassName UpdateInfoReceiver      * @Description when delete a task, this broadcast receiver will receive it      * @author kiyonlin@163. com      * @date 2014- 1- 17 下午2:31:02      */     public class UpdateInfoReceiver extends BroadcastReceiver {            @Override            public void onReceive(Context context, Intent intent) {                 if (intent == null) {                      return;                }                 if (com.kiyonlin.utils.Actions.ACTION_UPDATE_INFO .equals(intent                           .getAction())) {                     updateInfo();                }           }     }     protected UpdateInfoReceiver updateInfoReceiver;     protected void registerUpdateInfoReceiver() {            if ( updateInfoReceiver == null) {                 updateInfoReceiver = new UpdateInfoReceiver();           }           IntentFilter filter = new IntentFilter(Actions.ACTION_UPDATE_INFO );           getActivity().registerReceiver( updateInfoReceiver, filter);     }     @UiThread     void showShortToastMsg(String msg) {           Toast. makeText(getActivity(), msg, Toast.LENGTH_SHORT).show();     }     @UiThread     void showLongToastMsg(String msg) {           Toast. makeText(getActivity(), msg, Toast.LENGTH_LONG).show();     }}

使用了一个全局的SharePreference，由changed变量保存数据改变状态（使用AndroidAnnotation）：

@SharedPref(value = SharedPref .Scope.UNIQUE)public interface GlobalPrefBean {     boolean changed();}

MainFragment和NewTaskActivity中也作了相应的改变，有兴趣请查看源码。

为了方便起见，测试任务持续日期都是1天，运行效果图：

 

目前为止源码：

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