android - 如何在 Android 中将图像添加到微调器

Question

我想向我尝试过的微调器添加图像：

<Spinner
    android:id="@+id/spinner1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/myImage" />

但是使用此代码，微调器上的向下箭头符号变得不可见，请告诉我如何解决该问题！我想做与这张图片中的完全一样的事

Answer 1

在. _ /res/layout/_ 设置每一行的布局。

  <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
    <ImageView
    android:id="@+id/icon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/icon"/>
    <TextView
    android:id="@+id/weekofday"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>
</LinearLayout>

并在 Java 文件中将此代码添加为

 Spinner mySpinner = (Spinner)findViewById(R.id.spinner);
  ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
    R.layout.row, R.id.weekofday, YourArrayHere);
  mySpinner.setAdapter(adapter);

Answer 2

在我的例子中，我刚刚对微调器项目使用了标准布局，并且只覆盖了一点 ArrayAdapter。

private class PaymentTypeArrayAdapter extends ArrayAdapter<PaymentType> {

    public PaymentTypeArrayAdapter(Context context) {
        super(context, android.R.layout.simple_spinner_item);

        addAll(PaymentType.getPaymentTypes());
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        TextView label = (TextView) super.getView(position, convertView, parent);

        PaymentType paymentType = getItem(position);
        label.setText(paymentType.getStringResourceId());
        label.setCompoundDrawablesWithIntrinsicBounds(0, 0, paymentType.
                getImageResourceId(), 0);

        return label;
    }

    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        TextView label = (TextView) super.getDropDownView(position, convertView, parent);

        PaymentType paymentType = getItem(position);
        label.setText(paymentType.getStringResourceId());
        label.setCompoundDrawablesWithIntrinsicBounds(0, 0, paymentType.
                getImageResourceId(), 0);

        return label;
    }
}

然后为您的微调器设置适配器：

mPaymentTypeArrayAdapter = new PaymentTypeArrayAdapter(getContext());
    setAdapter(mPaymentTypeArrayAdapter);

在这种方法中，关键是使用setCompoundDrawablesWithIntrinsicBounds作为标签