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

概述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

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, Cursor cursor, 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));    }}

解决方法:

试试这个.希望这能解决你的问题.

 public class vIEw_items_CursorAdapter extends CursorAdapter { boolean[] checkBox; public vIEw_items_CursorAdapter(Context context, Cursor cursor, int flags)      {    super(context, cursor, 0);    checkBox = new boolean[cursor.getCount()];}@OverrIDepublic VIEw newVIEw(Context context, Cursor cursor, VIEwGroup parent) {    return LayoutInflater.from(context).inflate(R.layout.act_vIEw_items_vIEw, parent, false);}@OverrIDepublic voID bindVIEw(VIEw vIEw, Context context, 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;       }});}

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