Android 滚动选择器

使用方法

1. 添加依赖

注：${latestVersion}请替换为当前最新版本号，见releases。

gradle：

implementation 'com.github.duanhong169:picker-view:${latestVersion}'

maven：

<dependency>
    <groupId>com.github.duanhong169</groupId>
    <artifactId>picker-view</artifactId>
    <version>${latestVersion}</version>
    <type>pom</type>
</dependency>

2. 集成到项目中

2.1 集成 PickerView

添加到 layout 文件中：

<top.defaults.view.PickerView
    android:id="@+id/pickerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

使用列表作为数据源

List<Item> items = new ArrayList<>();
for (int i = 0; i < 42; i++) {
    items.add(new Item("Item " + i));
}

pickerView.setItems(Item.sampleItems(), item -> textView.setText(item.getText()));

实现 Adapter 作为数据源

配置数据源：

PickerView.Adapter adapter = new PickerView.Adapter() {

    @Override
    public int getItemCount() {
        return 42;
    }

    @Override
    public String getText(int index) {
        return "Item " + index;
    }
};
pickerView.setAdapter(adapter);

监听选择事件：

pickerView.setOnSelectedItemChangedListener((pickerView, previousPosition, selectedItemPosition) -> 
        textView.setText(pickerView.getAdapter().getText(selectedItemPosition)));

2.2 集成 DivisionPickerView

添加到 layout 文件中：

<top.defaults.view.DivisionPickerView
    android:id="@+id/divisionPicker"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:preferredMaxOffsetItemCount="4"
    android:background="#e7e7e7"/>

构建省市区数据源：

参考Divisions.java

设置数据源并监听选择事件

final List<DivisionModel> divisions = Divisions.get(this);
divisionPicker.setDivisions(divisions);
divisionPicker.setOnSelectedDateChangedListener(division -> textView.setText(Division.Helper.getCanonicalName(division)));

2.3 集成 DateTimePickerView

添加到 layout 文件中：

<top.defaults.view.DateTimePickerView
    android:id="@+id/datePickerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:preferredMaxOffsetItemCount="3"
    app:textSize="18sp"
    app:type="dateTime"
    app:minutesInterval="fifteen"
    app:curved="true"
    android:background="#e7e7e7"/>

设置初始日期：

dateTimePickerView.setStartDate(Calendar.getInstance());
// 注意：月份是从 0 开始计数的
dateTimePickerView.setSelectedDate(new GregorianCalendar(2017, 6, 27, 21, 30));

监听选择事件：

dateTimePickerView.setOnSelectedDateChangedListener(new DateTimePickerView.OnSelectedDateChangedListener() {
    @Override
    public void onSelectedDateChanged(Calendar date) {
        int year = date.get(Calendar.YEAR);
        int month = date.get(Calendar.MONTH);
        int dayOfMonth = date.get(Calendar.DAY_OF_MONTH);
        int hour = date.get(Calendar.HOUR_OF_DAY);
        int minute = date.get(Calendar.MINUTE);
        String dateString = String.format(Locale.getDefault(), "%d 年%02d 月%02d 日%02d 时%02d 分", year, month + 1, dayOfMonth, hour, minute);
        textView.setText(dateString);
        Log.d(TAG, "new date: " + dateString);
    }
});

更详细的使用方法请参见示例。

License

Copyright 2018 Hong Duan

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.