java – Android – Checkbox在listview中每10次重复一次

您好我一直在尝试使用自定义适配器创建列表视图,以在其中放置两个textview和一个复选框.列表视图工作正常,但复选框开始每10秒重复一次,所以如果你检查第一个复选框,第10个复选框也会检查,依此类推.我对此进行了研究,但找不到具体的答案,这个答案得到了很好的解释,我可以理解我必须做些什么来解决它.那么如何修复复选框以便它们不重复？

act_view_items_view.xml
????

<RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="New Text"
        android:id="@+id/workout_items_textView"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:textSize="20dp"
        android:gravity="center_vertical"
        android:layout_toStartOf="@+id/workout_items_textView2"
        android:layout_toLeftOf="@+id/workout_items_textView2"
        android:textIsSelectable="false"
        android:height="50dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="New Text"
        android:id="@+id/workout_items_textView2"
        android:textSize="20dp"
        android:gravity="center_vertical"
        android:layout_toLeftOf="@+id/workout_items_CheckBox"
        android:layout_alignParentTop="true"
        android:height="50dp"/>

    <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/workout_items_CheckBox"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:height="40dp"
        android:layout_alignBottom="@+id/workout_items_textView2"
        android:focusable="false"/>

</RelativeLayout>

view_items.java

public class view_items extends ListActivity {
    private ListAdapter listAdapter;
    private ListAdapter listAdapter2;
    private TaskDBHelper helper;
    private TextView taskTextView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.act_view_items);

        updateUI2();


    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu,menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.action_add_task:
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setTitle("Add a Workout");
                builder.setMessage("Enter the name of the workout");
                final EditText inputField = new EditText(this);
                builder.setView(inputField);
                builder.setPositiveButton("Next",new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialogInterface,int i) {

                        AlertDialog.Builder builder2 = new AlertDialog.Builder(view_items.this);
                        builder2.setTitle("Add a Workout");
                        builder2.setMessage("Enter the reps for the workout");
                        final EditText inputField2 = new EditText(view_items.this);
                        builder2.setView(inputField2);
                        builder2.setPositiveButton("Next",new DialogInterface.OnClickListener() {


                            @Override
                            public void onClick(DialogInterface dialogInterface,int i) {
                                String task = inputField.getText().toString();
                                String reps = inputField2.getText().toString();
                                String workoutID = TaskContract.UNSTABLE_WORKOUT_ID;

                                helper = new TaskDBHelper(view_items.this);
                                SQLiteDatabase db = helper.getWritableDatabase();
                                ContentValues values = new ContentValues();

                                values.clear();
                                values.put(TaskContract.Columns.TASK,task);
                                values.put(TaskContract.Columns.REPS,reps);
                                values.put(TaskContract.Columns.WORKOUT_ID,workoutID);

                                db.insertWithOnConflict(TaskContract.TABLE,null,values,SQLiteDatabase.CONFLICT_IGNORE);
                                updateUI2();
                            }


                        });
                        builder2.setNegativeButton("Cancel",null);

                        builder2.create().show();

                    }


                });

                builder.setNegativeButton("Cancel",null);

                builder.create().show();
                return true;

            default:
                return false;
        }
    }


    public void updateUI2(){

        // TodoDatabaseHandler is a SQLiteOpenHelper class connecting to SQLite
        TaskDBHelper handler = new TaskDBHelper(this);
        // Get access to the underlying writeable database
        SQLiteDatabase db = handler.getWritableDatabase();
        // Query for items from the database and get a cursor back
        String sql2 = String.format("SELECT  * FROM workout_items WHERE %s = '%s'",TaskContract.Columns.WORKOUT_ID,TaskContract.UNSTABLE_WORKOUT_ID);


        Cursor todoCursor = db.rawQuery(sql2,null);

        // Find ListView to populate
        setContentView(R.layout.act_view_items);
        ListView lvItems = (ListView) findViewById(android.R.id.list);
        // Setup cursor adapter using cursor from last step
        view_items_CursorAdapter todoAdapter = new view_items_CursorAdapter(this,todoCursor,0);
        // Attach cursor adapter to the ListView
        lvItems.setAdapter(todoAdapter);




    }

    public void onDoneButtonClick(View view) {
        View v = (View) view.getParent();
        TextView taskTextView = (TextView) v.findViewById(R.id.taskTextView);
        String task = taskTextView.getText().toString();

        String sql = String.format("DELETE FROM %s WHERE %s = '%s'",TaskContract.TABLE,TaskContract.Columns.TASK,task);


        helper = new TaskDBHelper(view_items.this);
        SQLiteDatabase sqlDB = helper.getWritableDatabase();
        sqlDB.execSQL(sql);
        updateUI2();
    }

}

view_items_CursorAdapter.java

public class view_items_CursorAdapter extends CursorAdapter {

    public view_items_CursorAdapter(Context context,Cursor cursor,int flags) {
        super(context,cursor,0);
    }


    @Override
    public View newView(Context context,ViewGroup parent) {
        return LayoutInflater.from(context).inflate(R.layout.act_view_items_view,parent,false);
    }


    @Override
    public void bindView(View view,Context context,Cursor cursor) {


        TextView tvBody = (TextView) view.findViewById(R.id.workout_items_textView);
        TextView tvPriority = (TextView) view.findViewById(R.id.workout_items_textView2);

        String body = cursor.getString(cursor.getColumnIndexOrThrow("task"));
        int priority = cursor.getInt(cursor.getColumnIndexOrThrow("reps"));

        tvBody.setText(body);
        tvPriority.setText(String.valueOf(priority));
    }



}

public class view_items_CursorAdapter extends CursorAdapter {
 boolean[] checkbox;
 public view_items_CursorAdapter(Context context,int flags)      
{
    super(context,0);
    checkbox = new boolean[cursor.getCount()];
}


@Override
public View newView(Context context,ViewGroup parent) {
    return LayoutInflater.from(context).inflate(R.layout.act_view_items_view,false);
}


@Override
public void bindView(View view,Cursor cursor) {

    final int position = cursor.getPosition();
    TextView tvBody = (TextView) view.findViewById(R.id.workout_items_textView);
    TextView tvPriority = (TextView) view.findViewById(R.id.workout_items_textView2);
    CheckBox tvCheck = (CheckBox) view.findViewById(R.id.checkbox1);

    String body = cursor.getString(cursor.getColumnIndexOrThrow("task"));
    int priority = cursor.getInt(cursor.getColumnIndexOrThrow("reps"));

    tvBody.setText(body);
    tvPriority.setText(String.valueOf(priority));
    tvCheck.setChecked(checkbox[position]);
    tvCheck.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
         checkbox[position] = isChecked;
       }});
}