我已经在自定义布局的CheckBox上设置了android:focusable =“ false”.我的后端SQLite数据库取决于是否选中了CheckBox. ListView中的每一行都对应于数据库中的一行.所以我的问题是,我应该在哪里放置CheckBox的OnClickListener,以便可以更新与该ListView行关联的项目?我需要将其放置在我可以访问ID的位置.也许onListItemClick?
更新:
这是我的自定义适配器:
package com.mohit.geo2do.adapters;import java.text.SimpleDateFormat;import java.util.Calendar;import android.content.Context;import android.database.Cursor;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.CheckBox;import android.widget.CursorAdapter;import android.widget.Filterable;import android.widget.TextView;import com.mohit.geo2do.R;import com.mohit.geo2do.provider.Task.Tasks;import com.mohit.geo2do.utils.Util;public class TasksAdapter extends CursorAdapter { private final Context context; public TasksAdapter(Context context, Cursor c) { super(context, c); this.context = context; } @Override public View newView(Context context, Cursor cursor, ViewGroup parent) { //Inflate the view LayoutInflater inflater = LayoutInflater.from(context); View v = inflater.inflate(R.layout.row_item, parent, false); return v; } @Override public void bindView(View view, Context context, Cursor cursor) { CheckBox checkbox = (CheckBox)view.findViewById(R.id.completed); TextView due_date = (TextView)view.findViewById(R.id.due_date); String title = cursor.getString(cursor.getColumnIndex(Tasks.TITLE)); boolean completed = Util.intToBool(cursor.getInt(cursor.getColumnIndex(Tasks.COMPLETED))); SimpleDateFormat format = new SimpleDateFormat("EEEEEE, MMM dd yyyy hh:mm aa"); long unixTime = cursor.getLong(cursor.getColumnIndex(Tasks.DUE_DATE)); Calendar due = Util.timestampToDate(unixTime); due_date.setText(format.format(due.getTime())); checkbox.setText(title); checkbox.setChecked(completed); }}
解决方法:
当我做类似的事情时,我创建了一个SimpleCursorAdapter并为其创建了一个ViewBinder.
在viewbinder的setViewValue()中,如果视图是Checkbox的实例,则为该复选框添加setOnCheckedChangeListener,以更新后端数据库.如果您需要更多信息,请告诉我.
也许如果您向我展示如何构造SimpleCursorAdapter,那么我可以向您展示如何进一步发展.
public void bindView(View view, Context context, Cursor cursor) { CheckBox checkbox = (CheckBox)view.findViewById(R.id.completed); TextView due_date = (TextView)view.findViewById(R.id.due_date); String title = cursor.getString(cursor.getColumnIndex(Tasks.TITLE)); boolean completed = Util.intToBool(cursor.getInt(cursor.getColumnIndex(Tasks.COMPLETED))); SimpleDateFormat format = new SimpleDateFormat("EEEEEE, MMM dd yyyy hh:mm aa"); long unixTime = cursor.getLong(cursor.getColumnIndex(Tasks.DUE_DATE)); Calendar due = Util.timestampToDate(unixTime); due_date.setText(format.format(due.getTime())); checkbox.setText(title); checkbox.setChecked(completed); // edit here .. checkbox.setOnCheckedChangeListener( new CompoundButton.OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) { // update your value in the db });
}
来源:https://www.icode9.com/content-2-590251.html联系客服