在Android应用中使用AlertDialog对话框可以实现哪些功能

今天就跟大家聊聊有关在Android应用中使用AlertDialog对话框可以实现哪些功能，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。

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

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;  }  }  } }