Question

我有一个Edittext，右侧有一个可绘制的[v]，使它看起来像一个微调器。现在，我该如何实现这一目标？我将edittext设置为可点击，然后当我点击它时，会弹出一个带有列表的对话框（看起来像一个微调器选项）

有可能吗？

   <android.support.design.widget.TextInputLayout
    android:id="@+id/tilAppCategory"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="15dp"
    >

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/edtAppCategory"
        android:hint="Category"
        android:fontFamily="sans-serif-light"
        android:textColorHint="@color/textColorHint"
        android:maxLines="1"
        android:gravity="center|start"
        android:inputType="textNoSuggestions"
        android:textColor="@color/colorPrimaryDark"
        android:textSize="14sp"
        android:drawableEnd="@drawable/icon_spinner_down"
        android:focusableInTouchMode="true"
        android:clickable="true"
        />

</android.support.design.widget.TextInputLayout>

Answer 1

您可以在XML文件中执行以下操作：在android:drawableRight EditText，您可以在TextView中设置左上方和下方的图标，在“andorid”中设置<EditText android:id="@+id/name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:inputType="text" android:drawableRight="@drawable/ic_menu_share"/>

AutoCompleteTextView

用于显示像微调器一样的列表/** * handle header listview onclick event */ private OnClickListener showPopupWindow() { return new OnClickListener() { @Override public void onClick(View v) { PopupWindow popUp = popupWindowsort(); popUp.showAsDropDown(v, 0, 0); // show popup like dropdown list } }; } /** * show popup window method reuturn PopupWindow */ private PopupWindow popupWindowsort() { // initialize a pop up window type popupWindow = new PopupWindow(this); ArrayList<String> sortList = new ArrayList<String>(); sortList.add("A to Z"); sortList.add("Z to A"); sortList.add("Low to high price"); ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, sortList); // the drop down list is a list view ListView listViewSort = new ListView(this); // set our adapter and pass our pop up window contents listViewSort.setAdapter(adapter); // set on item selected listViewSort.setOnItemClickListener(onItemClickListener()); // some other visual settings for popup window popupWindow.setFocusable(true); popupWindow.setWidth(250); // popupWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.white)); popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT); // set the listview as popup content popupWindow.setContentView(listViewSort); return popupWindow; }

Android AutoCompleteTextView根据保留字完成单词，因此无需编写单词的所有字符。

Android AutoCompleteTextView是一个可编辑的文本字段，它在下拉菜单中显示建议列表，用户只能从中选择一个建议或值。

Android AutoCompleteTextView是EditText类的子类。 MultiAutoCompleteTextView是AutoCompleteTextView类的子类。

Android AutoCompleteTextView Example Tutorial

或

您可以使用Android PopupWindow Listview示例。

(A1+B1+C1)/3*100

在以下链接中找到完整的实现：

Android PopupWindow Listview example .

Answer 2

您可以使用autocompletetextview（如

）实现此目的

<AutoCompleteTextView
                        android:id="@+id/acType"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:maxLines="1"
                        android:paddingBottom="@dimen/lef_margin"
                        android:paddingTop="@dimen/lef_margin"
                        android:singleLine="true"
                        android:textSize="@dimen/header_text_large"/>


ArrayAdapter arrayAdapter= new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_1, dataList);
    acType.setAdapter(arrayAdapter);
    acType.setInputType(0);



acType.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (hasFocus)
                acType.showDropDown();
        }
    });

Answer 3

借助@Chetan的答案，我构建了此小部件，可以帮助任何人请使用

提供选项列表

setOptions

方法

 public class DropDown extends AppCompatTextView implements View.OnClickListener {

        private ArrayList<String> options = new ArrayList<>();

        public DropDown(Context context) {
            super(context);
            initView();
        }

        public DropDown(Context context, AttributeSet attrs) {
            super(context, attrs);
            initView();
        }

        public DropDown(Context context, AttributeSet attrs, int defStyleAttr) {
            super(context, attrs, defStyleAttr);
            initView();
        }

        private void initView() {
            this.setOnClickListener(this);
        }

        private PopupWindow popupWindowsort(Context context) {

            // initialize a pop up window type
            PopupWindow popupWindow = new PopupWindow(context);
            popupWindow.setWidth(this.getWidth());

            ArrayAdapter<String> adapter = new ArrayAdapter<String>(context, android.R.layout.simple_dropdown_item_1line,
                    options);
            // the drop down list is a list view
            ListView listViewSort = new ListView(context);

            // set our adapter and pass our pop up window contents
            listViewSort.setAdapter(adapter);

            // set on item selected
            listViewSort.setOnItemClickListener((parent, view, position, id) -> {
                this.setText(options.get(position));
                popupWindow.dismiss();
            });

            // some other visual settings for popup window
            popupWindow.setFocusable(true);
            // popupWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.white));
            popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);

            // set the listview as popup content
            popupWindow.setContentView(listViewSort);

            return popupWindow;
        }

        @Override
        public void onClick(View v) {
            if (v == this) {
                PopupWindow window = popupWindowsort(v.getContext());
                window.showAsDropDown(v, 0, 0);
            }
        }

        public void setOptions(ArrayList<String> options) {
            this.options = options;
        }
}

在您的布局文件中

<com.yourdomian.app.DropDown
    style="@style/formDropDown"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/ship_to_address" />

在样式文件中

<style name="formDropDown">
    <item name="android:paddingRight">20dp</item>
    <item name="android:paddingLeft">24dp</item>
    <item name="android:paddingTop">20dp</item>
    <item name="android:paddingBottom">20dp</item>
    <item name="android:textSize">13sp</item>
    <item name="android:background">@drawable/edit_text_background_dark_round</item>
    <item name="android:layout_marginTop">10dp</item>
    <item name="android:elevation">5dp</item>
    <item name="android:drawableRight">@drawable/ic_down_arrow</item>
    <item name="android:gravity">center_vertical</item>
</style>

在您的Java文件中

ArrayList<String> options = new ArrayList<>();
    options.add("Option 1");
    options.add("Option 2");
    options.add("Option 3");
    options.add("Option 4");

    ((DropDown)findViewById(R.id.dropdown)).setOptions(options);

输出将是

Answer 4

public class DropDownEditText extends AutoCompleteTextView {
    private float x;

    public DropDownEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        setCompoundDrawablesWithIntrinsicBounds(null, null, context.getDrawable(R.drawable.ic_spinner_caret), null);
        setAdapter(new ArrayAdapter<String>(context, android.R.layout.simple_spinner_dropdown_item, new String[]{"one", "two", "three", "four"}));
    }

    @Override
    public boolean performClick() {
        if (x < (getRight() - getCompoundDrawables()[2].getBounds().width()))
            return super.performClick();
        showDropDown();
        return false;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_UP) {
            x = event.getX();
        }
        return super.onTouchEvent(event);
    }
}

Edittext中的微调器

4 个答案: