Android学习之Dialog

在Android开发中，我们经常会需要在Android界面上弹出一些对话框，比如询问用户或者让用户选择。这些功能我们叫它Android Dialog对话框;

实例如下：

1.效果图：

2.XML代码：

 <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" >

     <Button

         android:id="@+id/button1"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignParentLeft="true"

         android:layout_alignParentTop="true"

         android:text="信息提示框" />

     <Button

         android:id="@+id/button2"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignLeft="@+id/button1"

         android:layout_below="@+id/button1"

         android:text="弹出单选按钮框" />

     <Button

         android:id="@+id/button3"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignRight="@+id/button2"

         android:layout_below="@+id/button2"

         android:text="弹出多选按钮框" />

     <Button

         android:id="@+id/button4"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignLeft="@+id/button3"

         android:layout_below="@+id/button3"

         android:text="弹出一组列表框" />

     <Button

         android:id="@+id/button5"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignLeft="@+id/button4"

         android:layout_below="@+id/button4"

         android:text="弹出进度条框" />

     <Button

         android:id="@+id/button6"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_alignLeft="@+id/button5"

         android:layout_below="@+id/button5"

         android:text="自定义布局框" />

 </RelativeLayout>

3.java代码：

 package com.example.alertdilog;

 import android.app.Activity;

 import android.app.Dialog;

 import android.app.AlertDialog;

 import android.app.ProgressDialog;

 import android.content.DialogInterface;

 import android.view.LayoutInflater;

 import android.view.Menu;

 import android.view.View;

 import android.view.View.OnClickListener;

 import android.widget.Button;

 import android.widget.EditText;

 import android.widget.Toast;

 import android.os.Bundle;

 public class MainActivity extends Activity implements OnClickListener {

     private Button Buttton1;

     private Button Buttton2;

     private Button Buttton3;

     private Button Buttton4;

     private Button Buttton5;

     private Button Buttton6;

     private EditText mUserNamEditText;

     private EditText mPwdEditText;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         initView();

     }

     private void initView() {

         Buttton1 = (Button) this.findViewById(R.id.button1);

         Buttton2 = (Button) this.findViewById(R.id.button2);

         Buttton3 = (Button) this.findViewById(R.id.button3);

         Buttton4 = (Button) this.findViewById(R.id.button4);

         Buttton5 = (Button) this.findViewById(R.id.button5);

         Buttton6 = (Button) this.findViewById(R.id.button6);

         Buttton1.setOnClickListener(this);

         Buttton2.setOnClickListener(this);

         Buttton3.setOnClickListener(this);

         Buttton4.setOnClickListener(this);

         Buttton5.setOnClickListener(this);

         Buttton6.setOnClickListener(this);

     }

     @Override

     public boolean onCreateOptionsMenu(Menu menu) {

         // Inflate the menu; this adds items to the action bar if it is present.

         getMenuInflater().inflate(R.menu.main, menu);

         return true;

     }

     @Override

     public void onClick(View view) {

         switch (view.getId()) {

         case R.id.button1: // 信息提示框

             AlertDialog();

             break;

         case R.id.button2:

             AlertRadioDialog(); // 弹出单选按钮

             break;

         case R.id.button3:

             AlertCheckBoxDialog();

             break;

         case R.id.button4:

             AlertListDialog();

             break;

         case R.id.button5:

             AlertProgressDialog();

             break;

         case R.id.button6:

             AlertziDialog();

             break;

         default:

             break;

         }

     }

     private void AlertziDialog() {

         // 动态加载布局生成View对象

         LayoutInflater layoutInflater = LayoutInflater.from(MainActivity.this);

         View view = layoutInflater.inflate(R.layout.login_alert, null);

         mUserNamEditText = (EditText) view.findViewById(R.id.edit_username);

         mPwdEditText = (EditText) view.findViewById(R.id.edit_password);

         AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

         builder.setTitle("登陆");

         builder.setIcon(R.drawable.ic_launcher).create();

         builder.setView(view);

         builder.setPositiveButton("确定", null);

         builder.setNegativeButton("取消", null);

         builder.show();

     }

     private void AlertListDialog() {

         // 指定下拉列表的显示数据

         final String[] cities = { "广州", "上海", "北京", "香港", "澳门", "深圳", "天津",

                 "武汉", "兰州", "长沙", "重庆", "西安", "成都", "安徽" };

         AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

         builder.setIcon(R.drawable.ic_launcher);

         builder.setTitle("选择一个城市");

         // 设置一个下拉的列表选择项

         builder.setItems(cities, new DialogInterface.OnClickListener() {

             @Override

             public void onClick(DialogInterface dialog, int which) {

                 Toast.makeText(MainActivity.this, "选择的城市为：" + cities[which],

                         Toast.LENGTH_SHORT).show();

             }

         });

         builder.show();

     }

     private void AlertRadioDialog() {

         final String[] sex = { "男", "女", "保密" };

         AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

         builder.setTitle("请选择性别");

         builder.setIcon(android.R.drawable.ic_dialog_info).create();

         builder.setSingleChoiceItems(sex, 0,

                 new DialogInterface.OnClickListener() {

                     public void onClick(DialogInterface dialog, int which) {

                         Toast.makeText(MainActivity.this, "选择的是：" + sex[which],

                                 Toast.LENGTH_SHORT).show();

                         dialog.dismiss();

                     }

                 });

         builder.setNegativeButton("取消", null);

         builder.show();

     }

     private void AlertCheckBoxDialog() {

         AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

         builder.setTitle("请选择爱好");

         builder.setIcon(R.drawable.ic_launcher).create();

         builder.setMultiChoiceItems(new String[] { "打球", "谈朋友", "看小说", "写代码" },

                 null, null);

         builder.setPositiveButton("确定", null);

         builder.setNegativeButton("取消", null);

         builder.show();

     }

     private void AlertDialog() {

         AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

         builder.setTitle("信息提示");

         builder.setMessage("删除后不能回复，确认要删除吗？");

         builder.setIcon(R.drawable.ic_launcher).create();

         builder.setPositiveButton("确认", new AlertDialog.OnClickListener() {

             @Override

             public void onClick(DialogInterface dialog, int which) {

                 dialog.dismiss();

                 MainActivity.this.finish();

             }

         });

         builder.setNegativeButton("取消", new AlertDialog.OnClickListener() {

             @Override

             public void onClick(DialogInterface dialog, int which) {

                 dialog.dismiss();

             }

         });

         builder.show();

     }

     private void AlertProgressDialog() {

         ProgressDialog mypDialog = new ProgressDialog(MainActivity.this);

         // 设置ProgressDialog 标题

         mypDialog.setTitle("信息提示框");

         // 设置ProgressDialog 提示信息

         mypDialog.setMessage("Loading..........");

         // 设置ProgressDialog 标题图标

         mypDialog.setIcon(R.drawable.ic_launcher);

         // 设置ProgressDialog 进度条进度

         mypDialog.setProgress(59);

         // 设置ProgressDialog 的进度条是否不明确

         mypDialog.setIndeterminate(true);

         // 设置ProgressDialog 是否可以按退回按键取消

         mypDialog.setCancelable(true);

         // 显示出来来

         mypDialog.show();

     }

 }

巴特西

Android学习之Dialog

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