前言
BottomSheetDialogFragment是基于DialogFragment封装的，如果你不太了解DialogFragment，可以参考另一篇博客Android开发 DialogFragment对话框详解
基本使用代码
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import com.google.android.material.bottomsheet.BottomSheetDialogFragment
import com.lwlx.ui.main.databinding.MainDialogSelectBinding
class MyBottomSheetDialogFragment: BottomSheetDialogFragment() {
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val binding = MainDialogSelectBinding.inflate(inflater)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
}
}
显示对话框
private fun showDeleteTipsDialog(){
val dialog = MyBottomSheetDialogFragment()
dialog.show(supportFragmentManager, "a")
}
自定义DialogFragment实现底部弹出对话框
这个例子其实之前这个博客原来的内容，但是因为后续有了BottomSheetDialogFragment，所以自己实现其实没有意义了。但是保留代码可以大家一个参考，你可以举一反三实现其他位置的对话框弹出。
效果图
代码部分
dialog_bottom_single.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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="wrap_content"
android:id="@+id/root_layout"
android:background="@drawable/bg_while_rectangle_radius">
<TextView
android:id="@+id/left_btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="left|center_vertical"
android:paddingLeft="25dp"
android:paddingTop="13dp"
android:paddingBottom="13dp"
android:textColor="@color/color_181818"
android:textSize="18sp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@id/title" />
<TextView
android:id="@+id/title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingTop="13dp"
android:paddingBottom="13dp"
android:singleLine="true"
android:textColor="@color/color_181818"
android:textSize="18sp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toRightOf="@id/left_btn"
app:layout_constraintRight_toLeftOf="@id/right_btn" />
<TextView
android:id="@+id/right_btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="right|center_vertical"
android:paddingTop="13dp"
android:paddingRight="25dp"
android:paddingBottom="13dp"
android:textColor="@color/color_181818"
android:textSize="18sp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toRightOf="@id/title"
app:layout_constraintRight_toRightOf="parent" />
<View
android:id="@+id/line"
android:layout_width="0dp"
android:layout_height="1dp"
android:background="@color/color_72"
app:layout_constraintTop_toBottomOf="@id/title"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"/>
<ListView
android:id="@+id/content_list"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="@id/line"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
bg_while_rectangle_radius.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@color/ColorWhite"/>
<corners android:topLeftRadius="10dp" android:topRightRadius="10dp"/>
</shape>
Java代码部分
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.fragment.app.DialogFragment;
import net.wt.gate.R;
import java.util.List;
/**
* content: 底部显示的单选对话框
* time: 2020-3-16
*
* @author: zhouqiang
*/
public class BottomSingleDialog<T> extends DialogFragment {
private ConstraintLayout mRootLayout;
private TextView mLeftBtn;
private TextView mTitle;
private TextView mRightBtn;
private ListView mContentList;
private OnBuildView mOnBuildView;
private OnBottomSingleDialogListener<T> mListener;
private BottomSingleDialogAdapter<T> mAdapter;
private String mTitleContent;
private String mLeftContent;
private String mRightContent;
private int mSelectedPosition;
private BottomSingleDialog() {
}
public BottomSingleDialog(Context context, String title, String left, String right, int resource, @NonNull List<T> dataList, OnBuildView<T> onBuildView) {
mTitleContent = title;
mLeftContent = left;
mRightContent = right;
mOnBuildView = onBuildView;
mAdapter = new BottomSingleDialogAdapter<T>(context, resource, dataList);
}
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.dialog_bottom_single, container, false);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mRootLayout = (ConstraintLayout) view.findViewById(R.id.root_layout);
mLeftBtn = (TextView) view.findViewById(R.id.left_btn);
mTitle = (TextView) view.findViewById(R.id.title);
mRightBtn = (TextView) view.findViewById(R.id.right_btn);
mContentList = (ListView) view.findViewById(R.id.content_list);
mContentList.setAdapter(mAdapter);
if (!TextUtils.isEmpty(mTitleContent)) {
mTitle.setText(mTitleContent);
}
if (!TextUtils.isEmpty(mLeftContent)) {
mLeftBtn.setText(mLeftContent);
}
if (!TextUtils.isEmpty(mRightContent)) {
mRightBtn.setText(mRightContent);
}
initListener();
if (mListener != null) {
mListener.onViewCreated(view, this);
}
}
@Override
public void onStart() {
super.onStart();
WindowManager.LayoutParams params = getDialog().getWindow().getAttributes();
params.width = ViewGroup.LayoutParams.MATCH_PARENT;//设置宽度为铺满
params.gravity = Gravity.BOTTOM;
getDialog().getWindow().setAttributes((WindowManager.LayoutParams) params);
getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(getContext().getResources().getColor(R.color.transparent)));
}
@Override
public void onResume() {
super.onResume();
}
@Override
public void onStop() {
super.onStop();
}
@Override
public void onDestroy() {
super.onDestroy();
}
public ConstraintLayout getRootLayout() {
return mRootLayout;
}
public TextView getLeftBtn() {
return mLeftBtn;
}
public TextView getTitle() {
return mTitle;
}
public TextView getRightBtn() {
return mRightBtn;
}
public void setOnBottomSingleDialogListener(OnBottomSingleDialogListener<T> listener) {
mListener = listener;
}
/**
* 设置选中item
*
* @param position
*/
public void setSelectedItem(int position) {
mSelectedPosition = position;
if (mAdapter == null) {
return;
}
mAdapter.notifyDataSetChanged();
}
/**
* 更新列表内容
*/
public void listNotifyDataSetChanged() {
if (mAdapter == null) {
return;
}
mAdapter.notifyDataSetChanged();
}
/**
* 设置指定item数量的高度
*
* @param targetCount
*/
public void setItemCountHeight(int targetCount) {
mContentList.post(new Runnable() {
@Override
public void run() {
View view = mContentList.getChildAt(0);
if (view == null) {
return;
}
if (mContentList.getCount() < targetCount) {
return;
}
ViewGroup.LayoutParams layoutParams = mContentList.getLayoutParams();
layoutParams.height = view.getHeight() * targetCount;
mContentList.setLayoutParams(layoutParams);
}
});
}
/**
* 设置是否点击外部取消Dialog
* @param isCanceledOnTouchOutside
*/
public void setCanceledOnTouchOutside(boolean isCanceledOnTouchOutside) {
if (getDialog() != null) {
getDialog().setCanceledOnTouchOutside(isCanceledOnTouchOutside);
}
}
private void initListener() {
mLeftBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mListener != null) {
mListener.onClickLeftBtn(BottomSingleDialog.this);
}
}
});
mRightBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mListener != null) {
mListener.onClickRightBtn(BottomSingleDialog.this);
}
}
});
getDialog().setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
if (mListener != null) {
mListener.onCancel(BottomSingleDialog.this);
}
}
});
mContentList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (mListener != null) {
mListener.onClickItem(position, view, BottomSingleDialog.this);
}
}
});
}
public abstract static class OnBottomSingleDialogListener<T> {
/**
* 对话框View在创建的时候回调，在这个回调里，你可以修改对话框所有View的Ui效果
*
* @param view
* @param dialog
*/
public void onViewCreated(View view, BottomSingleDialog<T> dialog) {
}
/**
* 左边按钮点击
*
* @param dialog
*/
public void onClickLeftBtn(BottomSingleDialog<T> dialog) {
}
/**
* 右边按钮点击
*
* @param dialog
*/
public void onClickRightBtn(BottomSingleDialog<T> dialog) {
}
/**
* 点击ListView中的item
*
* @param position 点击位置
* @param itemView 点击itemView
* @param dialog
*/
public void onClickItem(int position, View itemView, BottomSingleDialog<T> dialog) {
}
/**
* 对话框取消
*
* @param dialog
*/
public void onCancel(BottomSingleDialog<T> dialog) {
}
}
public interface OnBuildView<T> {
/**
* 组装view并且返回
*
* @param position 当前位置
* @param selectedPosition 当前选中item位置
* @param parent 父类布局
* @param layoutRes 导入的布局id
* @param dataList 导入数据集合
* @return
*/
View onBuildView(int position, int selectedPosition, @NonNull ViewGroup parent, int layoutRes, List<T> dataList);
}
public class BottomSingleDialogAdapter<T> extends ArrayAdapter<T> {
private int layoutRes = 0;
private List<T> list;
public BottomSingleDialogAdapter(@NonNull Context context, int resource, @NonNull List<T> objects) {
super(context, resource, objects);
layoutRes = resource;
this.list = objects;
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
if (mOnBuildView != null) {
return mOnBuildView.onBuildView(position, mSelectedPosition, parent, layoutRes, list);
}
return super.getView(position, convertView, parent);
}
}
}
使用例子
private void initAllReadDialog() {
List<String> list = new ArrayList<>();
list.add(getString(R.string.mark_all_as_read));
list.add(getString(R.string.cancel));
mAllReadDialog = new BottomSingleDialog<String>(getContext(),
getString(R.string.mark_all_notifications_of_a_message_as_read),
"",
"",
R.layout.item_all_read_dialog,
list, new BottomSingleDialog.OnBuildView<String>() {
@Override
public View onBuildView(int position, int selectedPosition, @NonNull ViewGroup parent, int layoutRes, List<String> dataList) {
View view = LayoutInflater.from(parent.getContext()).inflate(layoutRes, parent, false);
TextView textView = view.findViewById(R.id.text);
textView.setText(dataList.get(position));
if (position == 0) {
textView.setTextColor(getResources().getColor(R.color.color_text_yellow));
} else {
textView.setTextColor(getResources().getColor(R.color.color_181818));
}
return view;
}
});
mAllReadDialog.setOnBottomSingleDialogListener(new BottomSingleDialog.OnBottomSingleDialogListener<String>() {
@Override
public void onViewCreated(View view, BottomSingleDialog<String> dialog) {
dialog.getLeftBtn().setVisibility(View.GONE);
dialog.getRightBtn().setVisibility(View.GONE);
dialog.getTitle().setTextSize(16);
dialog.getTitle().setTextColor(getResources().getColor(R.color.gray99));
ViewGroup.LayoutParams layoutParams = dialog.getTitle().getLayoutParams();
layoutParams.height = UnitConversionUtil.dip2px(getContext(), 50);
dialog.getTitle().setLayoutParams(layoutParams);
}
@Override
public void onClickItem(int position, View itemView, BottomSingleDialog<String> dialog) {
mAllReadDialog.dismiss();
if (position == 0) {
mMessageViewModel.setMessageAllRead();
return;
}
}
});
}
private void show() {
mAllReadDialog.show(getChildFragmentManager(), "AllReadDialog");
}
End
本文来自博客园，作者：观心静 ，转载请注明原文链接：https://www.cnblogs.com/guanxinjing/p/12851626.html
本文版权归作者和博客园共有，欢迎转载，但必须给出原文链接，并保留此段声明，否则保留追究法律责任的权利。
来源：https://www.cnblogs.com/guanxinjing/p/12851626.html |
发表于 2020-5-8 17:04:00
