android:常用的AlertDialog对话框及自定义对话框

Posted 2020-06-17 甄情

常用的Dialog有确认对话框，单选按钮对话框，多选按钮对话框，复选按钮对话框另外还有自定义的对话框

AlertDialog的常用方法

setTitle:为对话框设置标题

setMessage:为对话框设置内容

setIcon:为对话框设置图标

setItems设置对话框要显示的list

setMultiChoiceItems:一般用于复选框显示

setSingleChoiceItem:，设置单选按钮

setNeutralButton:普通按钮

setPositiveButton:添加确定按钮

setNegativeButton:添加取消按钮

setView:设置自定义样式

下面通过一个实例来了解这些方法

这是运行结果：

MainActivity.class

package com.example.alertdialog;

import android.R.bool;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.pm.LabeledIntent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {
	private Button button1;
	private Button button2;
	private Button button3;
	private Button button4;
	private Button button5;
	private int mark=0;
	private String item[] = { "学生", "工人", "教师", "农民" };
	private String multChoice[]={"旅游","电影","运动","读书"};

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		button1 = (Button) findViewById(R.id.btn_button1);
		button2 = (Button) findViewById(R.id.btn_button2);
		button3 = (Button) findViewById(R.id.btn_button3);
		button4 = (Button) findViewById(R.id.btn_button4);
		button5 = (Button) findViewById(R.id.btn_button5);
		button1.setOnClickListener(this);
		button2.setOnClickListener(this);
		button3.setOnClickListener(this);
		button4.setOnClickListener(this);
		button5.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		switch (v.getId()) {
		//确认对话框
		case R.id.btn_button1: {
			AlertDialog.Builder builder = new Builder(this);
			builder.setIcon(R.drawable.ic_launcher);
			builder.setTitle("确认对话框");
			builder.setMessage("确认退出？");
			builder.setPositiveButton("确定",
					new DialogInterface.OnClickListener() {

						@Override
						public void onClick(DialogInterface dialog, int which) {
							// TODO Auto-generated method stub
							Toast.makeText(MainActivity.this, "你单击了确定按钮",
									Toast.LENGTH_SHORT).show();
						}
					});
			builder.setNegativeButton("取消",
					new DialogInterface.OnClickListener() {

						@Override
						public void onClick(DialogInterface dialog, int which) {
							// TODO Auto-generated method stub
							Toast.makeText(MainActivity.this, "你单击了取消按钮",
									Toast.LENGTH_SHORT).show();
						}
					});
			builder.create();
			builder.show();
			break;
		}
		//列表对话框
		case R.id.btn_button2: {
			AlertDialog.Builder builder = new Builder(this);
			builder.setIcon(R.drawable.ic_launcher);
			builder.setTitle("职业");
			builder.setItems(item, new DialogInterface.OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					Toast.makeText(MainActivity.this, "你的职业是" + item[which],
							Toast.LENGTH_SHORT).show();
				}
			});
			builder.create();
			builder.show();
			break;
		}
		//多选对话框
		case R.id.btn_button3: {
			final boolean choose[]=new boolean[multChoice.length];
			AlertDialog.Builder builder = new Builder(this);
			builder.setIcon(R.drawable.ic_launcher);
			builder.setTitle("爱好");
			builder.setMultiChoiceItems(multChoice, null, new DialogInterface.OnMultiChoiceClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which, boolean isChecked) {
					// TODO Auto-generated method stub
					choose[which]=isChecked;
				}
			});
			builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					String result="";
					for(int i=0;i<multChoice.length;i++){
						if(choose[i]){
							result+=multChoice[i]+" ";
						}
					}
					Toast.makeText(MainActivity.this, "你的爱好["+result+"]", Toast.LENGTH_SHORT).show();
				}
			});
			builder.create();
			builder.show();
			break;
		}
		//单选对话框
		case R.id.btn_button4: {
			mark=0;
			AlertDialog.Builder builder = new Builder(this);
			builder.setIcon(R.drawable.ic_launcher);
			builder.setTitle("职业");
			builder.setSingleChoiceItems(item, 0, new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					mark=which;
				}
			});
			builder.setPositiveButton("确定",
					new DialogInterface.OnClickListener() {

						@Override
						public void onClick(DialogInterface dialog, int which) {
							// TODO Auto-generated method stub
							Toast.makeText(MainActivity.this, "你的职业:"+item[mark], Toast.LENGTH_SHORT).show();
						}
					});
			builder.create();
			builder.show();
			break;
		}
		//自定义对话框
		case R.id.btn_button5: {
			LayoutInflater inflater=LayoutInflater.from(this);
			View view=inflater.inflate(R.layout.item, null);
			AlertDialog.Builder builder = new Builder(this);
			builder.setIcon(R.drawable.ic_launcher);
			builder.setTitle("自定义对话框");
			builder.setView(view);
			builder.setNeutralButton("普通按钮", new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface dialog, int which) {
					// TODO Auto-generated method stub
					Toast.makeText(MainActivity.this,"我是自定义的对话框哦",Toast.LENGTH_SHORT).show();
				}
			});
			builder.create();
			builder.show();
			break;
		}
		}
	}
}

布局文件

activity_main.xml

<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=".MainActivity" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <Button
            android:id="@+id/btn_button1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="确认对话框" />

        <Button
            android:id="@+id/btn_button2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="列表对话框" />
        <Button
            android:id="@+id/btn_button3"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="多选对话框" />
        <Button
            android:id="@+id/btn_button4"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="单选对话框" />
        <Button
            android:id="@+id/btn_button5"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="自定义对话框" />
    </LinearLayout>

</RelativeLayout>

自定义的对话框布局文件

item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <ImageView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:scaleType="fitCenter"
        android:src="@drawable/icon"
        />
    <TextView 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="我是自定义的对话框"
        />
</LinearLayout>

希望能对大家有帮助 渣渣学习中、、、