Android PickerView底部选择框实现流程详解

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity"
    android:gravity="center">
    <TextView
        android:id="@ id/tv_pickerview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:textColor="@color/black"
        android:textSize="30sp"/>
   <com.google.android.material.button.MaterialButton
       android:id="@ id/btn"
       android:layout_width="120dp"
       android:layout_height="60dp"
       android:backgroundTint="@color/teal_200"
       app:cornerRadius="10dp"
       android:text="获取日期"
       android:textColor="@color/black"
       android:textSize="20sp"
       />
    <com.google.android.material.button.MaterialButton
        android:id="@ id/btn_1"
        android:layout_width="120dp"
        android:layout_height="60dp"
        android:backgroundTint="@color/teal_200"
        app:cornerRadius="10dp"
        android:text="自定义弹窗"
        android:textColor="@color/black"
        android:textSize="20sp"
        />
</LinearLayout>

                TimePickerView pvTime = new TimePickerBuilder(MainActivity.this, new OnTimeSelectListener() {
                    @Override
                    public void onTimeSelect(Date date, View v) {
                        tv_pickerview.setText(getTime(date));
                    }
                })
                        .setTimeSelectChangeListener(new OnTimeSelectChangeListener() {
                            @Override
                            public void onTimeSelectChanged(Date date) {
 
                            }
                        })
                        .setType(new boolean[]{true, true, true, true, true, true})
                        .setItemVisibleCount(6)
                        .setLineSpacingMultiplier(2.0f)
                        .isAlphaGradient(true)
                        .build();
                pvTime.show();
private String getTime(Date date) {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return format.format(date);
    }

//自定义底部弹窗
        btn_1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                initData();
                OptionsPickerView pvOptions = new OptionsPickerBuilder(MainActivity.this, new OnOptionsSelectListener() {
                    @Override
                    public void onOptionsSelect(int options1, int options2, int options3, View v) {
                        String date = options1Items.get(options1)   " "   options2   "时 "   options3   "分";
                        //在此获取选择到的内容
                        tv_pickerview.setText(date);
                    }
                })
                        .setTitleText("选择时间")
                        .setContentTextSize(16)
                        .build();
                pvOptions.setPicker(options1Items, options2Items, options3Items);
                pvOptions.show();
            }
        });
private void initData() {
        options1Items.clear();
        //加入第一个列表数据
        options1Items.add("上午");
        options1Items.add("下午");
        List<String> a = new ArrayList<>();
        List<String> b = new ArrayList<>();
        List<List<String>> c = new ArrayList<>();
        //创建最后一个列表数据（分）
        for (int i = 0; i < 60; i  ) {
            if (i < 10) {
                a.add("0"   i   "分");
            } else {
                a.add(i   "分");
            }
        }
        //创建第二个列表数据（时）,同时将最后一个列表数据加入c,加入次数为第二个列表的大小
        for (int i = 0; i <= 12; i  ) {
            if (i < 10) {
                b.add("0"   i   "时");
            } else {
                b.add(i   "时");
            }
            c.add(a);
        }
        //将第二个列表数据加入options2Itmes,加入次数为options1Items的大小
        for (int j = 0; j < options1Items.size(); j  ) {
            options2Items.add(b);
        }
        //将第三个列表数据加入options3Items,加入次数为第二个列表数据的长度
        for (int i = 0; i < b.size(); i  ) {
            options3Items.add(c);
        }
    }

package com.example.pickerviewtest;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.bigkoo.pickerview.builder.OptionsPickerBuilder;
import com.bigkoo.pickerview.builder.TimePickerBuilder;
import com.bigkoo.pickerview.listener.OnOptionsSelectListener;
import com.bigkoo.pickerview.listener.OnTimeSelectChangeListener;
import com.bigkoo.pickerview.listener.OnTimeSelectListener;
import com.bigkoo.pickerview.view.OptionsPickerView;
import com.bigkoo.pickerview.view.TimePickerView;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class MainActivity extends AppCompatActivity {
    TextView tv_pickerview;
    Button btn;
    Button btn_1;
    private final List<String> options1Items = new ArrayList<>();
    private final List<List<String>> options2Items = new ArrayList<>();
    private final List<List<List<String>>> options3Items = new ArrayList<>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv_pickerview = findViewById(R.id.tv_pickerview);
        btn = findViewById(R.id.btn);
        btn_1 = findViewById(R.id.btn_1);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                TimePickerView pvTime = new TimePickerBuilder(MainActivity.this, new OnTimeSelectListener() {
                    @Override
                    public void onTimeSelect(Date date, View v) {
                        tv_pickerview.setText(getTime(date));
                    }
                })
                        .setTimeSelectChangeListener(new OnTimeSelectChangeListener() {
                            @Override
                            public void onTimeSelectChanged(Date date) {
                            }
                        })
                        .setType(new boolean[]{true, true, true, true, true, true})
                        .setItemVisibleCount(6)
                        .setLineSpacingMultiplier(2.0f)
                        .isAlphaGradient(true)
                        .build();
                pvTime.show();
            }
        });
        //自定义底部弹窗
        btn_1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                initData();
                OptionsPickerView pvOptions = new OptionsPickerBuilder(MainActivity.this, new OnOptionsSelectListener() {
                    @Override
                    public void onOptionsSelect(int options1, int options2, int options3, View v) {
                        String date = options1Items.get(options1)   " "   options2   "时 "   options3   "分";
                        //在此获取选择到的内容
                        tv_pickerview.setText(date);
                    }
                })
                        .setTitleText("选择时间")
                        .setContentTextSize(16)
                        .build();
                pvOptions.setPicker(options1Items, options2Items, options3Items);
                pvOptions.show();
            }
        });
    }
    private String getTime(Date date) {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return format.format(date);
    }
    private void initData() {
        options1Items.clear();
        //加入第一个列表数据
        options1Items.add("上午");
        options1Items.add("下午");
        List<String> a = new ArrayList<>();
        List<String> b = new ArrayList<>();
        List<List<String>> c = new ArrayList<>();
        //创建最后一个列表数据（分）
        for (int i = 0; i < 60; i  ) {
            if (i < 10) {
                a.add("0"   i   "分");
            } else {
                a.add(i   "分");
            }
        }
        //创建第二个列表数据（时）,同时将最后一个列表数据加入c,加入次数为第二个列表的大小
        for (int i = 0; i <= 12; i  ) {
            if (i < 10) {
                b.add("0"   i   "时");
            } else {
                b.add(i   "时");
            }
            c.add(a);
        }
        //将第二个列表数据加入options2Itmes,加入次数为options1Items的大小
        for (int j = 0; j < options1Items.size(); j  ) {
            options2Items.add(b);
        }
        //将第三个列表数据加入options3Items,加入次数为第二个列表数据的长度
        for (int i = 0; i < b.size(); i  ) {
            options3Items.add(c);
        }
    }
}