Android使用NumberPicker实现年月滚动选择器

た入场券 2023-10-09 19:08 35阅读 0赞

效果截图：

![cc1a46f998dc4987b61a988a88415b9e.png][]

![807bb2b236aa42bc83fe60a076e30f38.png][]

在XML布局文件中添加两个NumberPicker

<?xml version="1.0" encoding="utf-8"?>
    <FrameLayout
            xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:layout_width="match_parent"
            android:layout_gravity="bottom"
            android:layout_height="330dp"
            tools:context=".MainActivity" android:background="@android:color/background_light">
    
    
        <LinearLayout
                android:id="@+id/linearLayout"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:layout_gravity="center">
    
            <NumberPicker
                    android:id="@+id/yearPicker"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"/>
    
            <NumberPicker
                    android:id="@+id/monthPicker"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"/>
        </LinearLayout>
    
        <LinearLayout
                android:id="@+id/btnGroup"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:layout_marginBottom="15dp"
                android:layout_gravity="bottom|center">
    
            <Button
                    android:id="@+id/btnCancel"
                    android:text="取消"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="center" android:layout_marginRight="25dp"/>
    
            <Button
                    android:id="@+id/btnOK"
                    android:text="确定"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="15dp"
                    android:layout_gravity="bottom"/>
    
    
        </LinearLayout>
        <TextView
                android:id="@+id/textView"
                android:text="请选择账单月份"
                android:layout_margin="10dp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
    
    </FrameLayout>

在Java代码中获取两个NumberPicker控件，并设置其滚动范围和滚动监听器：

package com.example.mouthpicker;
    
    import android.app.AlertDialog;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.NumberPicker;
    import androidx.appcompat.app.AppCompatActivity;
    import android.os.Bundle;
    
    import java.util.Arrays;
    import java.util.Calendar;
    import java.util.List;
    
    public class MainActivity extends AppCompatActivity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            final NumberPicker yearPicker = findViewById(R.id.yearPicker);
            final NumberPicker monthPicker = findViewById(R.id.monthPicker);
    
            // 设置年份范围
            int curYear = Calendar.getInstance().get(Calendar.YEAR);
            yearPicker.setMinValue(curYear - 10);
            yearPicker.setMaxValue(curYear + 10);
    
            // 设置月份范围
            String[] months = new String[]{"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"};
            monthPicker.setDisplayedValues(months);
            monthPicker.setMinValue(0);
            monthPicker.setMaxValue(11);
    
            // 设置滚动监听器
            yearPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
                @Override
                public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
                    int year = picker.getValue();
                    int month = monthPicker.getValue() + 1; // 加1是因为数组下标从0开始
                    Log.d("TAG", "Selected year: " + year + ", month: " + month);
                }
            });
    
            monthPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
                @Override
                public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
                    int year = yearPicker.getValue();
                    int month = picker.getValue() + 1; // 加1是因为数组下标从0开始
                    Log.d("TAG", "Selected year: " + year + ", month: " + month);
                }
            });
    
    
            Button button = findViewById(R.id.btnOK);
            //点击事件
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    int year = yearPicker.getValue();
                    int month = monthPicker.getValue() + 1; // 加1是因为数组下标从0开始
                    Log.d("TAG", "Selected year: " + year + ", month: " + month);
                    new AlertDialog.Builder(MainActivity.this)
                            .setTitle("提示信息")
                            .setMessage("您选择的是：" + year + "年" + month + "月")
                            .setPositiveButton("确定", null)
                            .show();
                }
            });
    
    
        }
    }

[cc1a46f998dc4987b61a988a88415b9e.png]: https://img-blog.csdnimg.cn/cc1a46f998dc4987b61a988a88415b9e.png
[807bb2b236aa42bc83fe60a076e30f38.png]: https://img-blog.csdnimg.cn/807bb2b236aa42bc83fe60a076e30f38.png