效果如下图

对话框布局

dialog_uninstallation_confirmation.xml

自定义的对话框类

UninstallationConfirmationDialog.java

package com.bu_ish.custom_dialog_example;import android.app.Dialog;import android.content.Context;import android.os.Bundle;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.ImageView;import android.widget.TextView;public abstract class UninstallationConfirmationDialog extends Dialog {    private ImageView iconImageView;    private TextView messageTextView;    private int iconResId;    private String message;    public abstract void onCancelClicked();    public abstract void onUninstallClicked();    public UninstallationConfirmationDialog(Context context) {        super(context, R.style.UninstallationConfirmationDialog);    }    public UninstallationConfirmationDialog setIcon(int resId) {        this.iconResId = resId;        return this;    }    public UninstallationConfirmationDialog setMessage(String message) {        this.message = message;        return this;    }    @Override    public void show() {        super.show();        Window window = getWindow();        WindowManager.LayoutParams layoutParams = window.getAttributes();        layoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;        window.setAttributes(layoutParams);    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.dialog_uninstallation_confirmation);        iconImageView = findViewById(R.id.iconImageView);        messageTextView = findViewById(R.id.messageTextView);        iconImageView.setImageResource(iconResId);        messageTextView.setText(message);        findViewById(R.id.cancelTextView).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                onCancelClicked();                dismiss();            }        });        findViewById(R.id.uninstallTextView).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                onUninstallClicked();                dismiss();            }        });    }}

对话框style

P.S.

对话框默认风格是带标题的，通过windowNoTitle设置为无标题

为保证对话框宽度与屏幕匹配，须通过Window.setAttributes(WindowManager.LayoutParams)设置宽度

完整Demo链接：，提取码：qbwu