Android 優雅地管理Dialog彈框

<?xml version="1.0" encoding="utf-8"?>
<com.flyco.roundview.RoundLinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:paddingBottom="10dp"
    app:rv_backgroundColor="@color/white"
    app:rv_cornerRadius="6dp">

    <com.flyco.roundview.RoundTextView
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:gravity="center"
        android:id="@+id/tv_dialog_title"
        android:minHeight="50dp"
        android:paddingBottom="4dp"
        android:paddingEnd="15dp"
        android:paddingStart="15dp"
        android:paddingTop="4dp"
        android:text="標題"
        android:textColor="@color/dialog_title_text"
        android:textSize="17sp"
        android:textStyle="bold"
        android:visibility="visible"
        app:rv_backgroundColor="@color/dialog_title_bg"
        app:rv_cornerRadius_TL="6dp"
        app:rv_cornerRadius_TR="6dp" />

    <TextView
        android:layout_height="wrap_content"
        android:layout_marginBottom="25dp"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="15dp"
        android:layout_marginTop="25dp"
        android:layout_width="match_parent"
        android:gravity="center"
        android:id="@+id/tv_dialog_content"
        android:lineSpacingExtra="2dp"
        android:maxHeight="400dp"
        android:scrollbars="vertical"
        android:text="彈框內容"
        android:textColor="@color/dialog_content_text"
        android:textSize="14sp" />


    <LinearLayout
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="15dp"
        android:layout_width="match_parent"
        android:id="@+id/ll_bottom_operation"
        android:orientation="horizontal">

        <com.flyco.roundview.RoundTextView
            android:layout_height="40dp"
            android:layout_marginEnd="4dp"
            android:layout_weight="1"
            android:layout_width="0dp"
            android:gravity="center"
            android:id="@+id/rtv_left"
            android:text="@string/dialog_btn_cancel"
            android:textColor="@color/dialog_btn_cancel_text"
            android:textSize="14sp"
            android:visibility="visible"
            app:rv_backgroundColor="@color/dialog_btn_cancel_bg"
            app:rv_backgroundPressColor="@color/dialog_btn_cancel_bg_checked"
            app:rv_cornerRadius="6dp"
            app:rv_strokeColor="@color/dialog_btn_cancel_stroke"
            app:rv_strokePressColor="@color/dialog_btn_cancel_stroke_checked"
            app:rv_strokeWidth="1dp" />

        <com.flyco.roundview.RoundTextView
            android:layout_height="40dp"
            android:layout_marginStart="4dp"
            android:layout_weight="1"
            android:layout_width="0dp"
            android:gravity="center"
            android:id="@+id/rtv_right"
            android:text="@string/dialog_btn_confirm"
            android:textColor="@color/dialog_btn_confirm_text"
            android:textSize="14sp"
            android:visibility="visible"
            app:rv_backgroundColor="@color/dialog_btn_confirm_bg"
            app:rv_backgroundPressColor="@color/dialog_btn_confirm_bg_checked"
            app:rv_cornerRadius="6dp" />

    </LinearLayout>
</com.flyco.roundview.RoundLinearLayout>

    implementation 'com.blankj:utilcodex:1.30.6'
    implementation 'com.flyco.roundview:FlycoRoundView_Lib:1.1.4@aar'

    <!--彈框相關顏色-->
    <color name="dialog_title_text">#101a3e</color>
    <color name="dialog_title_bg">#F9FAFB</color>
    <color name="dialog_content_text">#221715</color>

    <color name="dialog_btn_cancel_text">#221715</color>
    <color name="dialog_btn_cancel_stroke">#221715</color>
    <color name="dialog_btn_cancel_stroke_checked">#221715</color>
    <color name="dialog_btn_cancel_bg">#FFFFFF</color>
    <color name="dialog_btn_cancel_bg_checked">#F0F0F0</color>

    <color name="dialog_btn_confirm_text">#221715</color>
    <color name="dialog_btn_confirm_stroke">#221715</color>
    <color name="dialog_btn_confirm_stroke_checked">#221715</color>
    <color name="dialog_btn_confirm_bg">#4996F3</color>
    <color name="dialog_btn_confirm_bg_checked">#4996F3</color>

    <color name="dialog_btn_confirm_text_enable">#80221715</color>
    <color name="dialog_btn_confirm_bg_enable">#384996F3</color>

    <string name="dialog_title">溫馨提示</string>
    <string name="dialog_permission_allow">允許</string>
    <string name="dialog_permission_refuse">拒絕</string>
    <string name="dialog_permission_title">申請權限</string>
    <string name="dialog_btn_cancel">取消</string>
    <string name="dialog_btn_confirm">確認</string>
    <string name="dialog_btn_setting">設定</string>

package com.littlejerk.permissiondemo;

import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.Window;
import android.view.WindowManager;

import com.blankj.utilcode.util.ActivityUtils;

import androidx.annotation.NonNull;

/**
 * @author : HHotHeart
 * @date : 2021/9/17 12:46
 * @desc : 描述
 */
public class BaseDialog extends Dialog {
    private Context context;


    public BaseDialog(@NonNull Context context) {
        super(context, R.style.DialogTheme);
        this.context = context;
    }


    /**
     * Dialog顯示前處理邏輯
     *
     * @param view Dialog內容布局
     */
    public void show(View view) {
        Window window = getWindow();
        if (window == null) return;
        window.setContentView(view);
        WindowManager.LayoutParams pl = window.getAttributes();
        pl.gravity = Gravity.CENTER; //位置
        pl.height = WindowManager.LayoutParams.WRAP_CONTENT;
        int width = window.getDecorView().getResources().getDisplayMetrics().widthPixels;
        pl.width = (int) (width * 0.9);
        window.setAttributes(pl);
        show();
    }

    @Override
    public void show() {
        Activity activity = ActivityUtils.getActivityByContext(context);
        if (activity != null && !activity.isFinishing()) {
            super.show();
        }
    }

    @Override
    public void dismiss() {
        Activity activity = ActivityUtils.getActivityByContext(context);
        if (activity != null && !activity.isFinishing()) {
            super.dismiss();
        }
    }

    /**
     * 是否是外部區域
     *
     * @param context
     * @param event
     * @return
     */
    public boolean isOutOfBounds(Context context, MotionEvent event) {

        final int x = (int) event.getX();
        final int y = (int) event.getY();

        final int slop = ViewConfiguration.get(context).getScaledWindowTouchSlop();
        final Window window = getWindow();
        if (window == null) return false;
        final View decorView = getWindow().getDecorView();
        return (x < -slop) || (y < -slop) || (x > (decorView.getWidth() + slop)) || (y > (decorView.getHeight() + slop));
    }
}

package com.littlejerk.permissiondemo;


import android.app.Activity;
import android.app.Dialog;
import android.content.DialogInterface;
import android.text.method.ScrollingMovementMethod;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.blankj.utilcode.util.SizeUtils;
import com.blankj.utilcode.util.StringUtils;
import com.flyco.roundview.RoundTextView;

/**
 * @author : HHotHeart
 * @date : 2021/8/21 01:03
 * @desc : Dialog公共管理類
 */
public class AppDialogManager {

    private AppDialogManager() {
    }

    public static AppDialogManager getInstance() {
        return Holder.instance;
    }

    private static class Holder {
        private static AppDialogManager instance = new AppDialogManager();
    }

    /**
     * 普通彈框-只有一個實體的彈框
     */
    private BaseDialog mDialog = null;

    /**
     * 擴展的Dialog回呼
     */
    public interface DialogClickCallback {
        void onClick(int index);
    }

    /**
     * 權限申請彈框
     *
     * @param activity
     * @param content
     * @param positiveLister
     */
    public void showPermissionRemindDialog(Activity activity, String content,
                                           DialogInterface.OnClickListener negativeLister, DialogInterface.OnClickListener positiveLister) {
        showCommonDialog(activity,
                activity.getString(R.string.dialog_permission_title), content,
                activity.getString(R.string.dialog_permission_refuse), negativeLister,
                activity.getString(R.string.dialog_permission_allow), positiveLister);
    }

    /**
     * 權限設定彈框提示
     *
     * @param activity
     * @param content
     * @param positiveLister
     */
    public void showPermissionSettingRemind(Activity activity, String content,
                                            DialogInterface.OnClickListener negativeLister, DialogInterface.OnClickListener positiveLister) {
        showCommonDialog(activity,
                activity.getString(R.string.dialog_permission_title), content,
                activity.getString(R.string.dialog_btn_cancel), negativeLister,
                activity.getString(R.string.dialog_btn_setting), positiveLister);
    }

    /**
     * 有Positive按鈕的Dialog
     *
     * @param activity
     * @param title
     * @param content
     * @param positive
     * @param positiveLister
     */
    public void showPositiveDialog(Activity activity, String title, String content,
                                   String positive, DialogInterface.OnClickListener positiveLister) {
        showCommonDialog(activity, title, content, null, null, positive, positiveLister);
    }

    /**
     * 有確認和取消按鈕（沒有title）
     *
     * @param activity
     * @param content
     * @param positiveLister
     */
    public void showCommonDialog(Activity activity, String content, DialogInterface.OnClickListener positiveLister) {
        showCommonDialog(activity, null, content,
                activity.getString(R.string.dialog_btn_cancel), null,
                activity.getString(R.string.dialog_btn_confirm), positiveLister);
    }

    /**
     * 公共方法
     *
     * @param activity
     * @param title
     * @param content
     * @param negative
     * @param negativeLister
     * @param positive
     * @param positiveLister
     */
    public void showCommonDialog(Activity activity, String title, String content,
                                 String negative, DialogInterface.OnClickListener negativeLister,
                                 String positive, DialogInterface.OnClickListener positiveLister) {
        showCommonDialog(activity, title, content, negative, negativeLister, positive, positiveLister, true);
    }

    /**
     * 公共方法
     *
     * @param activity
     * @param title
     * @param content
     * @param negative
     * @param negativeLister
     * @param positive
     * @param positiveLister
     * @param isClickDismiss
     */
    public void showCommonDialog(Activity activity, String title, String content,
                                 String negative, DialogInterface.OnClickListener negativeLister,
                                 String positive, DialogInterface.OnClickListener positiveLister, boolean isClickDismiss) {
        showDialog(activity, title, content, negative, negativeLister, positive, positiveLister,
                false, false, null,
                true, isClickDismiss);
    }


    /**
     * Dialog基本方法
     *
     * @param activity                 顯示Dialog的Activity
     * @param title                    Dialog 標題
     * @param content                  Dialog 內容
     * @param negative                 左邊按鈕
     * @param negativeLister           左邊按鈕的點擊事件
     * @param positive                 右邊按鈕
     * @param positiveLister           右邊按鈕的點擊事件
     * @param isCanceledOnTouchOutside 點擊非Dialog內容部分是否允許Dismiss
     * @param isCancelable             點擊后退鍵是否允許Dismiss
     * @param dismissListener          Dialog消失的監聽事件
     * @param isMultiDialog            是否允許多個Dialog同時存在
     * @param isClickDismiss           點擊按鈕是否允許dismiss Dialog
     */
    private void showDialog(Activity activity,
                            String title,
                            String content,
                            String negative, final DialogInterface.OnClickListener negativeLister,
                            String positive, final DialogInterface.OnClickListener positiveLister,
                            boolean isCanceledOnTouchOutside,
                            boolean isCancelable,
                            final DialogInterface.OnDismissListener dismissListener,
                            boolean isMultiDialog,
                            final boolean isClickDismiss) {

        View view = LayoutInflater.from(activity).inflate(R.layout.dialog_common_view, null);
        TextView tvTitle = view.findViewById(R.id.tv_dialog_title);
        TextView tvContent = view.findViewById(R.id.tv_dialog_content);
        tvContent.setMovementMethod(ScrollingMovementMethod.getInstance());
        RoundTextView rtvLeft = view.findViewById(R.id.rtv_left);
        RoundTextView rtvRight = view.findViewById(R.id.rtv_right);
        //顯示title邏輯
        if (!StringUtils.isEmpty(title)) {
            tvTitle.setText(title);
            tvTitle.setVisibility(View.VISIBLE);
        } else {
            tvTitle.setVisibility(View.GONE);
        }
        //內容為空時，直接return,不顯示dialog
        if (StringUtils.isEmpty(content)) {
            return;
        }
        //顯示content邏輯
        tvContent.setText(content);
        tvContent.setVisibility(View.VISIBLE);
        //沒有標題時,content的上下距離30dp、文字大小14sp
        if (StringUtils.isEmpty(title)) {
            LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) tvContent.getLayoutParams();
            params.setMargins(
                    SizeUtils.dp2px(15), SizeUtils.dp2px(30),
                    SizeUtils.dp2px(15), SizeUtils.dp2px(30));
            tvContent.setLayoutParams(params);
        }

        //沒有title,只有右邊按鈕時，content文字大小為12sp
        if (StringUtils.isEmpty(title) && StringUtils.isEmpty(negative) && !StringUtils.isEmpty(positive)) {
            tvContent.setTextSize(12);
        }

        if (!StringUtils.isEmpty(negative)) {
            rtvLeft.setText(negative);
            rtvLeft.setVisibility(View.VISIBLE);
        } else {
            rtvLeft.setVisibility(View.GONE);
        }
        if (!StringUtils.isEmpty(positive)) {
            rtvRight.setText(positive);
            rtvRight.setVisibility(View.VISIBLE);
        } else {
            rtvRight.setVisibility(View.GONE);
        }

        if (isMultiDialog) {
            //允許多個Dialog存在
            final BaseDialog dialog = new BaseDialog(activity);
            //外部是否可以取消
            dialog.setCanceledOnTouchOutside(isCanceledOnTouchOutside);
            //回傳是否可以取消
            dialog.setCancelable(isCancelable);

            dialog.setOnDismissListener(dialog1 -> {
                if (dismissListener != null) dismissListener.onDismiss(dialog1);
            });

            rtvLeft.setOnClickListener(v -> {
                if (isClickDismiss) {
                    dialog.dismiss();
                }
                if (negativeLister != null) {
                    negativeLister.onClick(dialog, DialogInterface.BUTTON_NEGATIVE);
                }

            });
            rtvRight.setOnClickListener(v -> {
                if (isClickDismiss) {
                    dialog.dismiss();
                }
                if (positiveLister != null) {
                    positiveLister.onClick(dialog, DialogInterface.BUTTON_POSITIVE);
                }

            });
            dialog.show(view);
        } else {
            //只允許一個Dialog存在
            resetLatestDialog(mDialog);
            mDialog = new BaseDialog(activity);
            //外部是否可以取消
            mDialog.setCanceledOnTouchOutside(isCanceledOnTouchOutside);
            //回傳是否可以取消
            mDialog.setCancelable(isCancelable);

            mDialog.setOnDismissListener(dialog -> {
                if (dismissListener != null) dismissListener.onDismiss(dialog);
            });

            rtvLeft.setOnClickListener(v -> {
                if (isClickDismiss) {
                    mDialog.dismiss();
                }
                if (negativeLister != null) {
                    negativeLister.onClick(mDialog, DialogInterface.BUTTON_NEGATIVE);
                }

            });
            rtvRight.setOnClickListener(v -> {
                if (isClickDismiss) {
                    mDialog.dismiss();
                }
                if (positiveLister != null) {
                    positiveLister.onClick(mDialog, DialogInterface.BUTTON_POSITIVE);
                }

            });
            mDialog.show(view);
        }

    }

    /**
     * 釋放掉最近顯示的Dialog
     *
     * @param dialog
     */
    private void resetLatestDialog(Dialog dialog) {
        if (dialog != null && dialog.isShowing()) {
            dialog.dismiss();
            dialog = null;
        }
    }

}

private void showDialog(Activity activity,
                            String title,
                            String content,
                            String negative, final DialogInterface.OnClickListener negativeLister,
                            String positive, final DialogInterface.OnClickListener positiveLister,
                            boolean isCanceledOnTouchOutside,
                            boolean isCancelable,
                            final DialogInterface.OnDismissListener dismissListener,
                            boolean isMultiDialog,
                            final boolean isClickDismiss);

可實作的功能

• 可任意修改按鈕文案
• 設定是否有標題
• 控制按鈕的數量
• 按鈕點擊事件回呼
• 任意控制dialog的消失（如強制更新按鈕點擊不允許dialog消失、back鍵等）