Android 之BottomsheetDialogFragment仿抖音评论底部弹出对话框效果(实例代码)
作者:可乐猫哈 时间:2023-08-06 01:01:56
实现的效果图:
自定义Fragment继承BottomSheetDialogFragment
重写它的三个方法:
onCreateDialog()
onCreateView()
onStart()
他们的执行顺序是从上到下
import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ImageView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.google.android.material.bottomsheet.BottomSheetBehavior;
import com.google.android.material.bottomsheet.BottomSheetDialog;
import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
import java.util.ArrayList;
import java.util.List;
/**
* @Author: david.lvfujiang
* @Date: 2019/11/14
* @Describe:
*/
public class BaseFullBottomSheetFragment extends BottomSheetDialogFragment {
private List<ShareItem> mShareList = new ArrayList<>();
private int[] imgArry= {R.mipmap.five,R.mipmap.four,R.mipmap.one,R.mipmap.three};
private Context mContext;
private View view;
public static BaseFullBottomSheetFragment getInstance() {
return new BaseFullBottomSheetFragment();
}
@NonNull
@Override
public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
Log.e("TAG", "onCreateDialog: ");
//返回BottomSheetDialog的实例
return new BottomSheetDialog(this.getContext());
}
@Override
public void onStart() {
Log.e("TAG", "onStart: ");
super.onStart();
//获取dialog对象
BottomSheetDialog dialog = (BottomSheetDialog) getDialog();
//把windowsd的默认背景颜色去掉,不然圆角显示不见
dialog.getWindow().findViewById(R.id.design_bottom_sheet).setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
//获取diglog的根部局
FrameLayout bottomSheet = dialog.getDelegate().findViewById(R.id.design_bottom_sheet);
if (bottomSheet != null) {
//获取根部局的LayoutParams对象
CoordinatorLayout.LayoutParams layoutParams = (CoordinatorLayout.LayoutParams) bottomSheet.getLayoutParams();
layoutParams.height = getPeekHeight();
//修改弹窗的最大高度,不允许上滑(默认可以上滑)
bottomSheet.setLayoutParams(layoutParams);
final BottomSheetBehavior<FrameLayout> behavior = BottomSheetBehavior.from(bottomSheet);
//peekHeight即弹窗的最大高度
behavior.setPeekHeight(getPeekHeight());
// 初始为展开状态
behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
ImageView mReBack = view.findViewById(R.id.re_back_img);
//设置监听
mReBack.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//关闭弹窗
behavior.setState(BottomSheetBehavior.STATE_HIDDEN);
}
});
}
}
/**
* 弹窗高度,默认为屏幕高度的四分之三
* 子类可重写该方法返回peekHeight
*
* @return height
*/
protected int getPeekHeight() {
int peekHeight = getResources().getDisplayMetrics().heightPixels;
//设置弹窗高度为屏幕高度的3/4
return peekHeight - peekHeight / 3;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
mContext = getContext();
Log.e("TAG", "onCreateView: ");
view = inflater.inflate(R.layout.layoyt_bottomsheet, container, false);
initData();
initViews(view);
return view;
}
private void initViews(View view) {
RecyclerView recyclerView = view.findViewById(R.id.fragment_share_recyclerView);
recyclerView.setLayoutManager(new GridLayoutManager(mContext, 3));
RecyclerCommonAdapter adapter = new RecyclerCommonAdapter(R.layout.recyclear_item, mShareList);
recyclerView.setAdapter(adapter);
}
private void initData() {
for (int i = 0; i < 30; i++) {
ShareItem item = new ShareItem();
item.setIcon(imgArry[i%4]);
mShareList.add(item);
}
}
}
有以下几点需要注意:
1.去掉窗口的background,窗口的background默认是白色的,如果不处理我们的根部局设置圆角背景的时候是没有效果的
dialog.getWindow().findViewById(R.id.design_bottom_sheet).setBackgroundDrawable
(new ColorDrawable
(Color.TRANSPARENT));
2.固定窗口的高度,窗口默认可以向上滑动直到铺满整个屏幕RecyclerView才开始滑动
BottomSheetDialog dialog = (BottomSheetDialog) getDialog();
//把windowsd的默认背景颜色去掉,不然圆角显示不见
dialog.getWindow().findViewById(R.id.design_bottom_sheet).setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
//获取diglog的根部局
FrameLayout bottomSheet = dialog.getDelegate().findViewById(R.id.design_bottom_sheet);
if (bottomSheet != null) {
//获取根部局的LayoutParams对象
CoordinatorLayout.LayoutParams layoutParams = (CoordinatorLayout.LayoutParams) bottomSheet.getLayoutParams();
layoutParams.height = getPeekHeight();
//修改弹窗的最大高度,不允许上滑(默认可以上滑)
bottomSheet.setLayoutParams(layoutParams);
final BottomSheetBehavior<FrameLayout> behavior = BottomSheetBehavior.from(bottomSheet);
//peekHeight即弹窗的最大高度
behavior.setPeekHeight(getPeekHeight());
// 初始为展开状态
behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
ImageView mReBack = view.findViewById(R.id.re_back_img);
//设置监听
mReBack.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//关闭弹窗
behavior.setState(BottomSheetBehavior.STATE_HIDDEN);
}
});
}
3.Fragment加载的布局文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/leave_message_radiobutton_background"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="@dimen/dp_40">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="100条评论"
android:textSize="15dp"
android:textStyle="bold"></TextView>
<ImageView
android:id="@+id/re_back_img"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="20dp"
android:src="@mipmap/back"></ImageView>
</RelativeLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/fragment_share_recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp" />
</LinearLayout>
4.Fragment布局的圆角背景
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<!-- 填充 -->
<solid android:color="#ffffff" />
<!-- 圆角 -->
<corners android:radius="15dp" />
</shape>
5.RecyclerView的item布局
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="140dp"
android:layout_margin="8dp"
app:cardCornerRadius="8dp"
app:cardElevation="4dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="8dp">
<ImageView
android:id="@+id/img_recy_item_1_pic"
android:layout_width="140dp"
android:src="@mipmap/three"
android:layout_height="match_parent"
android:scaleType="centerCrop" />
</RelativeLayout>
</androidx.cardview.widget.CardView>
6.RecyclerView适配器是用BaseRecyclerViewAdapterHelper
Android 中RecyclerView通用适配器的实现
package com.example.bottomsheetdialogapplication;
import androidx.annotation.Nullable;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import java.util.List;
import java.util.Map;
/**
* @Author: david.lvfujiang
* @Date: 2019/10/30
* @Describe:
*/
public class RecyclerCommonAdapter extends BaseQuickAdapter<ShareItem, BaseViewHolder> {
public RecyclerCommonAdapter(int layoutResId, @Nullable List<ShareItem> data) {
super(layoutResId, data);
}
@Override
protected void convert(BaseViewHolder helper, ShareItem item) {
helper.setImageResource(R.id.img_recy_item_1_pic, item.getIcon());
helper.addOnClickListener(R.id.img_recy_item_1_pic);
}
}
7. 调用
Button button = findViewById(R.id.on); button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) { new BaseFullBottomSheetFragment().show(getSupportFragmentManager(), "dialog"); } });
来源:https://blog.csdn.net/qq_39027256/article/details/103073173
标签:android,底部,对话框


猜你喜欢
教你创建一个带诊断工具的.NET镜像
2021-09-28 03:11:11

SpringDataJPA在Entity中常用的注解介绍
2023-11-27 09:40:36
JAVA发送http get/post请求,调用http接口、方法详解
2021-11-02 16:41:19
C++ OpenCV单峰三角阈值法Thresh_Unimodal详解
2022-06-09 14:36:46

使用JPA自定义VO类型转换(EntityUtils工具类)
2023-08-26 14:56:17
IKAnalyzer结合Lucene实现中文分词(示例讲解)
2022-10-13 03:24:44
Java NIO和IO的区别
2023-07-15 22:53:46

Unity实现鼠标或者手指点击模型播放动画
2023-11-30 23:06:01

C#函数式程序设计之用闭包封装数据的实现代码
2021-06-30 01:44:34
C#递归算法之快速排序
2021-08-16 21:13:37

C# 删除字符串中的中文(实例分享)
2021-12-30 12:55:48
Spring Boot Security 结合 JWT 实现无状态的分布式API接口
2021-06-04 05:01:17
java 遍历request中的所有表单数据的实例代码
2021-10-21 11:19:26
java代理模式(静态代理、动态代理、cglib代理)
2022-11-22 16:12:49

Java Springboot 重要知识点整理汇总
2022-03-17 01:06:57
java虚拟机原理:类加载过程详解
2023-08-09 11:35:37
JavaWeb ServletContext基础与应用详细讲解
2021-12-20 22:13:10
android I/0流操作文件(文件存储)
2021-11-13 19:42:37

cmd中javac和java使用及注意事项详解
2022-03-25 10:37:36

Android自定义View实现天气预报折线图
2023-08-22 14:37:50
