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在Android應(yīng)用中使用AlertDialog對(duì)話框可以實(shí)現(xiàn)哪些功能

今天就跟大家聊聊有關(guān)在Android應(yīng)用中使用AlertDialog對(duì)話框可以實(shí)現(xiàn)哪些功能，可能很多人都不太了解，為了讓大家更加了解，小編給大家總結(jié)了以下內(nèi)容，希望大家根據(jù)這篇文章可以有所收獲。

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常用的Dialog有確認(rèn)對(duì)話框，單選按鈕對(duì)話框，多選按鈕對(duì)話框，復(fù)選按鈕對(duì)話框另外還有自定義的對(duì)話框

AlertDialog的常用方法

setTitle:為對(duì)話框設(shè)置標(biāo)題

setMessage:為對(duì)話框設(shè)置內(nèi)容

setIcon:為對(duì)話框設(shè)置圖標(biāo)

setItems設(shè)置對(duì)話框要顯示的list

setMultiChoiceItems:一般用于復(fù)選框顯示

setSingleChoiceItem:，設(shè)置單選按鈕

setNeutralButton:普通按鈕

setPositiveButton:添加確定按鈕

setNegativeButton:添加取消按鈕

setView:設(shè)置自定義樣式

下面通過(guò)一個(gè)實(shí)例來(lái)了解這些方法

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[] = { "學(xué)生", "工人", "教師", "農(nóng)民" }; 
 private String multChoice[]={"旅游","電影","運(yùn)動(dòng)","讀書(shū)"}; 
 @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()) { 
 //確認(rèn)對(duì)話框 
 case R.id.btn_button1: { 
 AlertDialog.Builder builder = new Builder(this); 
 builder.setIcon(R.drawable.ic_launcher); 
 builder.setTitle("確認(rèn)對(duì)話框"); 
 builder.setMessage("確認(rèn)退出？"); 
 builder.setPositiveButton("確定", 
  new DialogInterface.OnClickListener() { 
  @Override 
  public void onClick(DialogInterface dialog, int which) { 
  // TODO Auto-generated method stub 
  Toast.makeText(MainActivity.this, "你單擊了確定按鈕", 
   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, "你單擊了取消按鈕", 
   Toast.LENGTH_SHORT).show(); 
  } 
  }); 
 builder.create(); 
 builder.show(); 
 break; 
 } 
 //列表對(duì)話框 
 case R.id.btn_button2: { 
 AlertDialog.Builder builder = new Builder(this); 
 builder.setIcon(R.drawable.ic_launcher); 
 builder.setTitle("職業(yè)"); 
 builder.setItems(item, new DialogInterface.OnClickListener() { 
 @Override 
 public void onClick(DialogInterface dialog, int which) { 
  // TODO Auto-generated method stub 
  Toast.makeText(MainActivity.this, "你的職業(yè)是" + item[which], 
  Toast.LENGTH_SHORT).show(); 
 } 
 }); 
 builder.create(); 
 builder.show(); 
 break; 
 } 
 //多選對(duì)話框 
 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("愛(ài)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("確認(rèn)", 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, "你的愛(ài)好["+result+"]", Toast.LENGTH_SHORT).show(); 
 } 
 }); 
 builder.create(); 
 builder.show(); 
 break; 
 } 
 //單選對(duì)話框 
 case R.id.btn_button4: { 
 mark=0; 
 AlertDialog.Builder builder = new Builder(this); 
 builder.setIcon(R.drawable.ic_launcher); 
 builder.setTitle("職業(yè)"); 
 builder.setSingleChoiceItems(item, 0, new DialogInterface.OnClickListener() { 
 @Override 
 public void onClick(DialogInterface dialog, int which) { 
  // TODO Auto-generated method stub 
  mark=which; 
 } 
 }); 
 builder.setPositiveButton("確定", 
  new DialogInterface.OnClickListener() { 
  @Override 
  public void onClick(DialogInterface dialog, int which) { 
  // TODO Auto-generated method stub 
  Toast.makeText(MainActivity.this, "你的職業(yè):"+item[mark], Toast.LENGTH_SHORT).show(); 
  } 
  }); 
 builder.create(); 
 builder.show(); 
 break; 
 } 
 //自定義對(duì)話框 
 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("自定義對(duì)話框"); 
 builder.setView(view); 
 builder.setNeutralButton("普通按鈕", new DialogInterface.OnClickListener() { 
 @Override 
 public void onClick(DialogInterface dialog, int which) { 
  // TODO Auto-generated method stub 
  Toast.makeText(MainActivity.this,"我是自定義的對(duì)話框哦",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="確認(rèn)對(duì)話框" /> 
 <Button 
 android:id="@+id/btn_button2" 
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content" 
 android:text="列表對(duì)話框" /> 
 <Button 
 android:id="@+id/btn_button3" 
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content" 
 android:text="多選對(duì)話框" /> 
 <Button 
 android:id="@+id/btn_button4" 
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content" 
 android:text="單選對(duì)話框" /> 
 <Button 
 android:id="@+id/btn_button5" 
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content" 
 android:text="自定義對(duì)話框" /> 
 </LinearLayout> 
</RelativeLayout>

自定義的對(duì)話框布局文件

item.xml

<&#63;xml version="1.0" encoding="utf-8"&#63;> 
<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="我是自定義的對(duì)話框" 
 /> 
</LinearLayout>

看完上述內(nèi)容，你們對(duì)在Android應(yīng)用中使用AlertDialog對(duì)話框可以實(shí)現(xiàn)哪些功能有進(jìn)一步的了解嗎？如果還想了解更多知識(shí)或者相關(guān)內(nèi)容，請(qǐng)關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道，感謝大家的支持。

當(dāng)前文章：在Android應(yīng)用中使用AlertDialog對(duì)話框可以實(shí)現(xiàn)哪些功能
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