Android 实现底部弹框多选TextView，并返回选中的值

• 先看看效果
  
  选中后背景变白，字体变红，点击取消收起(取消可以换成确定)
  控制台输出选中
  

• 以下是代码
  – DialogFragment.java

package com.example.myfirstapp.web.fragment;

import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.util.SparseBooleanArray;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ListView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import com.example.myfirstapp.R;
import com.example.myfirstapp.web.adapter.DialogAdapter;

/**
 * 底部弹框Fragment
 */
public class DialogFragment extends androidx.fragment.app.DialogFragment {
    private String[] arrs = {"看电影", "去唱歌", "吃吃喝喝", "旅游", "夜蒲聚会", "玩游戏", "运动", "其他",};
    private DialogAdapter dialogAdapter;
    private ListView listView;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        //去掉dialog的标题，需要在setContentView()之前
        this.getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);
        Window window = this.getDialog().getWindow();
        //去掉dialog默认的padding
        window.getDecorView().setPadding(0, 0, 0, 0);
        WindowManager.LayoutParams lp = window.getAttributes();
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
        //设置dialog的位置在底部
        lp.gravity = Gravity.BOTTOM;
        //设置dialog的动画
        lp.windowAnimations = R.style.BottomDialogAnimation;
        window.setAttributes(lp);
        window.setBackgroundDrawable(new ColorDrawable());

        View view = inflater.inflate(R.layout.dialog_fragment_bottom, null);

        dialogAdapter = new DialogAdapter(getContext(), arrs);
        listView = view.findViewById(R.id.listview);
        listView.setAdapter(dialogAdapter);

        listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);

        //点击监听
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                SparseBooleanArray checkedItemPositions = listView.getCheckedItemPositions();
                int size = checkedItemPositions.size();
                String result = "";
                for (int i1 = 0; i1 < size; i1++) {
                    if (checkedItemPositions.valueAt(i1)) {
                        result += checkedItemPositions.keyAt(i1) + "*";
                    }
                }
                System.out.println("点击：" + result);
            }
        });

        //取消消除底部弹框
        View viewById = view.findViewById(R.id.quxiao);
        viewById.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                dismiss();
            }
        });
        return view;
    }
}

– DialogAdapter.java

package com.example.myfirstapp.web.adapter;

import android.content.Context;
import android.os.Build;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import androidx.annotation.RequiresApi;

import com.example.myfirstapp.R;

/**
 *  动态新增数据
 */
public class DialogAdapter extends BaseAdapter {
    private Context context;
    private String[] text_list;
    int tvSelect = 0;   //选中项

    public DialogAdapter(Context context, String[] text_list) {
        this.context = context;
        this.text_list = text_list;
    }

    @Override
    public int getCount() {
        return text_list.length;//添加条数
    }

    @Override
    public Object getItem(int i) {
        return null;
    }

    @Override
    public long getItemId(int i) {
        return 0;
    }

    @Override
    public View getView(int i, View convertView, ViewGroup viewGroup) {
//        System.out.println("**********"+tvSelect);
//        //获取对应数据
        String text = text_list[i];
        View view = View.inflate(context, R.layout.dialog_item, null);

        TextView textView = view.findViewById(R.id.tv_1);
        textView.setText(text);

        return view;
    }
}

– dialog_fragment_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

        <TextView
            android:id="@+id/tv_1"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:gravity="center"
            android:text="约会项目  (可多选)"
            android:textColor="@color/font_color"
            android:textSize="15sp"
            android:background="@drawable/dialog_item_bg"/>

        <ListView
            android:id="@+id/listview"
            android:layout_width="match_parent"
            android:layout_height="250dp"
            android:scrollbars="none"/>

        <TextView
            android:id="@+id/quxiao"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="取消"
            android:gravity="center"
            android:textColor="#FF4E6D"
            android:textSize="15sp"
            android:background="@color/white"/>
</LinearLayout>

– dialog_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/item_layout"
    android:layout_width="match_parent"
    android:layout_height="250dp"
    android:orientation="vertical"
    android:background="#E9E9E9">

    <TextView
        android:id="@+id/tv_1"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:gravity="center"
        android:textColor="@drawable/dialog_tv_text_color"
        android:textSize="14sp"
        android:background="@drawable/dialog_tv_bg"/>
</LinearLayout>

– dialog_tv_text_color.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item  android:color="@color/dialog_red" android:state_activated="true"/>
    <item android:color="@color/font_color"/>

</selector>

– dialog_tv_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_activated="true" android:drawable="@color/white"/>
</selector>

– dialog_item_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <!-- 输入框的圆角矩形背景 两边圆角-->
    <corners android:topLeftRadius="18dp"
        android:topRightRadius="18dp"/>
    <solid android:color="@color/white"/>
</shape>

• 调用

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
		       case R.id.btn:
		           DialogFragment dialogFragment = new DialogFragment();
		           dialogFragment.show(getSupportFragmentManager(),"age");
		           break;
        }
    }

本文地址：https://blog.csdn.net/BlowMoons/article/details/108705293