Question

我遇到ListView的问题。我有ListView一些项目（例如，两个有绿色背景颜色，其余有白色。当我点击项目时，其余项目将颜色更改为白色。

例1：

Item1(white)
Item2(green)
Item3(white)
Item4(green)

当我点击Item3时，它看起来像：

Item1(green)
Item2(white)
Item3(green)
Item4(white)

例2：

Item1(white)
Item2(green)
Item3(white)
Item4(white)

当我点击Item3时，它看起来像：

Item1(white)
Item2(white)
Item3(green)
Item4(white)

我该怎么做才能修复它？

编辑：这是我的代码 onCreate（）方法：

    protected void onCreate(Bundle savedInstanceState) {
    System.out.println("onCreate");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_paired_devices);
    devicesList = (ListView) findViewById(R.id.pairedDevicesListView);
    devices = DatabaseHandler.getInstance().getCounters(false);
    adapter = new ArrayAdapter(this, R.layout.text_view_layout, devices);
    devicesList.setAdapter(adapter);

    devicesList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
            System.out.println("Click " + devicesList.getItemAtPosition(i));
        }
    });
}

将项目添加到ListView：

    private final BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        System.out.println("Broadcast Receiver");
        String action = intent.getAction();
        if(BluetoothDevice.ACTION_FOUND.equals(action)) {
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            System.out.println(device.getName());

            for(int i = 0; i < devicesList.getCount(); i++) {
                if(device.getName().equals(devices.get(i))) {
                    View v = devicesList.getChildAt(getItemPosition(device.getName()));
                    v.setBackgroundColor(Color.GREEN);
                }
            }

        }
    }
};

EDIT2 ListView xml

    <ListView
    android:layout_width="match_parent"
    android:layout_height="167dp"
    android:id="@+id/pairedDevicesListView"
    android:layout_gravity="center_horizontal"
    android:layout_weight="0.66"
    android:choiceMode="singleChoice" />

text_view_layout

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/textviewlayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="30sp"></TextView>

Answer 1

您可以这样做：

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            if(dbManager.toggleCheck(list,parent.getItemAtPosition(position).toString()) == 1){
                parent.getChildAt(position).setBackgroundColor(Color.parseColor("#2196f3"));
            }
            else {
                parent.getChildAt(position).setBackgroundColor(Color.parseColor("#e3f2fd"));
            }
        }
    });

Android：ListView上的项目在单击后更改背景颜色

1 个答案: