Android 模式对话框提示Dialog

Posted 2020-07-26 幽冥狂_七

1、先写一个Dialog类  

CustomDialog 

package com.example.heng.adtest;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.Gravity;
import android.widget.Toast;

 
public class CustomDialog {
    //声明一个Diaglog
    private AlertDialog.Builder builder;
    //上下文对象
    private Context context;

    public CustomDialog(Context cnt)
    {
        this.context = cnt;
    }

    //声明弹出框方法
    //buttontext ：按钮名称
    //title ：标题
    //message：信息
    //callbock:返回信息
    public void CreateDialog(String buttontext, String title, String message, final CallBack callbock){
        builder = new AlertDialog.Builder(context);
        builder.setTitle(title);
        builder.setMessage(message);
        //添加确定按钮
        builder.setPositiveButton(buttontext, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                //业务逻辑判断
                callbock.isConfirm(true);
            }
        });
        builder.create().show();
    }

    public interface CallBack{
        public void isConfirm(boolean flag);
    }
}

 

2、在MainActivity中调用

package com.example.heng.adtest;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;


public class MainActivity extends AppCompatActivity {

    private Button buttonA;
    private Button buttonB;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        buttonA = (Button) this.findViewById(R.id.button1);
        buttonB = (Button) this.findViewById(R.id.button2);
        buttonA.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                CustomDialog dialog = new CustomDialog(MainActivity.this);
                dialog.CreateDialog("确定", "提示", "确定要删除吗？", new CustomDialog.CallBack() {
                    @Override
                    public void isConfirm(boolean flag) {
                        System.out.println("---------->>"+flag);
                        if (flag){

                        }
                    }
                });
            }
        });

        buttonB.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

            }
        });


    }
}

3、页面内容

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.heng.adtest.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:id="@+id/textView" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="dialog提示"
        android:id="@+id/button1"
        android:layout_below="@+id/textView"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginLeft="38dp"
        android:layout_marginStart="38dp"
        android:layout_marginTop="46dp" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/button2"
        android:layout_toRightOf="@+id/button1"
        android:layout_alignLeft="@+id/button1"
        android:layout_alignStart="@+id/button1"
        android:layout_marginTop="159dp"
        android:text="普通提示" />
</RelativeLayout>