Android开发--WIFI输入密码Dialog的实现

最终实现效果是点击一个未保存密码的WIFI信号时，弹出如下Dialog：

1、定义Dialog的布局文件：

 
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            <?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:gravity="center_horizontal"
           
                android:orientation="vertical"
           
                style="@style/DialogStyle">
           
                <EditText
           
                    android:id="@+id/wifiDialogPsw"
           
                    android:layout_width="match_parent"
           
                    android:layout_height="wrap_content"
           
                    android:password="true"
           
                    android:singleLine="true"/>
           
                <LinearLayout
           
                    android:layout_width="match_parent"
           
                    android:layout_height="wrap_content"
           
                    android:orientation="horizontal"
           
                    android:layout_weight="2">
           
                    <Button
           
                        android:id="@+id/wifiDialogCancel"
           
                        android:layout_width="wrap_content"
           
                        android:layout_height="wrap_content"
           
                        android:layout_gravity="center_horizontal"
           
                        android:text="取消"
           
                        android:layout_weight="1"/>
           
                    <Button
           
                        android:id="@+id/wifiDialogCertain"
           
                        android:layout_width="wrap_content"
           
                        android:layout_height="wrap_content"
           
                        android:layout_gravity="center_horizontal"
           
                        android:text="确定"
           
                        android:layout_weight="1"/>
           
            	</LinearLayout>
           
            </LinearLayout>

来自CODE的代码片
WIFI_Dialog.XML

2、定义一个Dialog的子类

 
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            package com.wifi.utils;
           
            import android.app.Dialog;
           
            import android.content.Context;
           
            import android.os.Bundle;
           
            import android.view.View;
           
            import android.widget.Button;
           
            import android.widget.EditText;
           
            import com.example.controlpcpro.R;
           
            public class WifiPswDialog extends Dialog{
           
            	private Button cancelButton;
           
            	private Button okButton;
           
            	private EditText pswEdit;
           
            	private OnCustomDialogListener customDialogListener;
           
            	public WifiPswDialog(Context context,OnCustomDialogListener customListener) {
           
            			//OnCancelListener cancelListener) {
           
            		super(context);
           
            		// TODO Auto-generated constructor stub
           
            		customDialogListener = customListener;
           
            	}
           
            	//定义dialog的回调事件
           
            	public interface OnCustomDialogListener{
           
            		void back(String str);
           
            	}
           
            	@Override
           
            	protected void onCreate(Bundle savedInstanceState) {
           
            		// TODO Auto-generated method stub
           
            		super.onCreate(savedInstanceState);
           
            		setContentView(R.layout.wifi_config_dialog);
           
            		setTitle("请输入密码");
           
            		pswEdit = (EditText)findViewById(R.id.wifiDialogPsw);
           
            		cancelButton = (Button)findViewById(R.id.wifiDialogCancel);
           
            		okButton = (Button)findViewById(R.id.wifiDialogCertain);
           
            		cancelButton.setOnClickListener(buttonDialogListener);
           
            		okButton.setOnClickListener(buttonDialogListener);
           
            	}
           
            	private View.OnClickListener buttonDialogListener = new View.OnClickListener() {
           
            		@Override
           
            		public void onClick(View view) {
           
            			// TODO Auto-generated method stub
           
            			if(view.getId() == R.id.wifiDialogCancel){
           
            				pswEdit = null;
           
            				customDialogListener.back(null);
           
            				cancel();//自动调用dismiss();
           
            			}
           
            			else{
           
            				customDialogListener.back(pswEdit.getText().toString());
           
            				dismiss();
           
            			}
           
            		}
           
            	};
           
            }

来自CODE的代码片
WifiPswDialog

首先说明下Dialog中两个Button的点击事件的处理

 
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<a target=_blank id="L12" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L12" rel="#L12" style="color: rgb(102, 102, 102); text-decoration: none;"> 12</a> 
         
            		public void onClick(View view) {
           
            			// TODO Auto-generated method stub
           
            			if(view.getId() == R.id.wifiDialogCancel){
           
            				pswEdit = null;
           
            				customDialogListener.back(null);
           
            				cancel();//自动调用dismiss();
           
            			}
           
            			else{
           
            				customDialogListener.back(pswEdit.getText().toString());
           
            				dismiss();
           
            			}
           
            		}

来自CODE的代码片
click

参考： http://labs.chinamobile.com/groups/10670_27134

对话框关闭时，调用dismiss()方法。点击“取消”时调用cancel()方法，指不再需要执行对话框上的任何功能和动作，取消对话框会自动调用dismiss()方法。

实现从对话框中返回信息，如WIFI密码

Dialog并没有提供可以直接返回数据的方法，我们可以通过创建自己的监听类实现

 
        <a target=_blank id="L1" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L1" rel="#L1" style="color: rgb(102, 102, 102); text-decoration: none;"> 1</a>
<a target=_blank id="L2" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L2" rel="#L2" style="color: rgb(102, 102, 102); text-decoration: none;"> 2</a>
<a target=_blank id="L3" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L3" rel="#L3" style="color: rgb(102, 102, 102); text-decoration: none;"> 3</a>
<a target=_blank id="L4" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L4" rel="#L4" style="color: rgb(102, 102, 102); text-decoration: none;"> 4</a> 
         
            //定义dialog的回调事件
           
            	public interface OnCustomDialogListener{
           
            		void back(String str);
           
            	}

来自CODE的代码片
OnCustomDialogListener

同样Dialog的构造方法也需要改变

 
        <a target=_blank id="L1" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L1" rel="#L1" style="color: rgb(102, 102, 102); text-decoration: none;"> 1</a>
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<a target=_blank id="L3" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L3" rel="#L3" style="color: rgb(102, 102, 102); text-decoration: none;"> 3</a>
<a target=_blank id="L4" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L4" rel="#L4" style="color: rgb(102, 102, 102); text-decoration: none;"> 4</a>
<a target=_blank id="L5" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L5" rel="#L5" style="color: rgb(102, 102, 102); text-decoration: none;"> 5</a>
<a target=_blank id="L6" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L6" rel="#L6" style="color: rgb(102, 102, 102); text-decoration: none;"> 6</a> 
         
            	public WifiPswDialog(Context context,OnCustomDialogListener customListener) {
           
            		super(context);
           
            		// TODO Auto-generated constructor stub
           
            		customDialogListener = customListener;
           
            	}

来自CODE的代码片
WifiPswDialog

然后我们需要在创建Dialog时候实现 OnCustomDialogListener接口。

Dialog中如何传出数据呢，这是在OnClick方法中传出的。如代码中的语句：

customDialogListener.back(null);

customDialogListener.back(pswEdit.getText().toString());

3、在Acitivity中创建Dialog

 
         <a target=_blank id="L1" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L1" rel="#L1" style="color: rgb(102, 102, 102); text-decoration: none;">  1</a>
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<a target=_blank id="L3" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L3" rel="#L3" style="color: rgb(102, 102, 102); text-decoration: none;">  3</a>
<a target=_blank id="L4" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L4" rel="#L4" style="color: rgb(102, 102, 102); text-decoration: none;">  4</a>
<a target=_blank id="L5" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L5" rel="#L5" style="color: rgb(102, 102, 102); text-decoration: none;">  5</a>
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<a target=_blank id="L21" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L21" rel="#L21" style="color: rgb(102, 102, 102); text-decoration: none;"> 21</a>
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<a target=_blank id="L23" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L23" rel="#L23" style="color: rgb(102, 102, 102); text-decoration: none;"> 23</a>
<a target=_blank id="L24" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L24" rel="#L24" style="color: rgb(102, 102, 102); text-decoration: none;"> 24</a>
<a target=_blank id="L25" href="http://blog.csdn.net/liuhui_8989/article/details/22962649#L25" rel="#L25" style="color: rgb(102, 102, 102); text-decoration: none;"> 25</a> 
          
             WifiPswDialog pswDialog = new WifiPswDialog(ControlPCMainActivity.this,new OnCustomDialogListener() {
            
             	@Override
            
             	public void back(String str) {
            
             	// TODO Auto-generated method stub
            
             		wifiPassword = str;
            
             		if(wifiPassword != null){
            
             			int netId = localWifiUtils.AddWifiConfig(wifiResultList,wifiItemSSID, wifiPassword);
            
             			Log.i("WifiPswDialog",String.valueOf(netId));
            
             		    if(netId != -1){
            
             				localWifiUtils.getConfiguration();//添加了配置信息，要重新得到配置信息
            
             				if(localWifiUtils.ConnectWifi(netId)){
            
             				selectedItem.setBackgroundResource(R.color.green);
            
             			    }
            
             			}
            
             			else{
            
             				Toast.makeText(ControlPCMainActivity.this, "网络连接错误", Toast.LENGTH_SHORT).show();
            
             				selectedItem.setBackgroundResource(R.color.burlywood);
            
             				}
            
             			}
            
             		else{
            
             			selectedItem.setBackgroundResource(R.color.burlywood);
            
             		}
            
             	}
            
             });
            
             pswDialog.show();

来自CODE的代码片
snippet_file_0.txt

创建Dialog时最主要的就是对OnCustomDialogListener接口的实现，对back()方法实现， back方法是对话框消失后执行的操作，返回的数据通过back()方法的参数str实现。

创建完成后Dialog的显示只需要通过 Dialog.show（）方法实现就可以了

project源码：http://download.csdn.net/detail/liuhui_8989/7154671

Android开发--WIFI输入密码Dialog的实现

来自CODE的代码片
WIFI_Dialog.XML

来自CODE的代码片
WifiPswDialog

来自CODE的代码片
click

来自CODE的代码片
OnCustomDialogListener

来自CODE的代码片
WifiPswDialog

来自CODE的代码片
snippet_file_0.txt

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Android开发--WIFI输入密码Dialog的实现

来自CODE的代码片 WIFI_Dialog.XML

来自CODE的代码片 WifiPswDialog

来自CODE的代码片 click

来自CODE的代码片 OnCustomDialogListener

来自CODE的代码片 WifiPswDialog

来自CODE的代码片 snippet_file_0.txt

热门文章

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来自CODE的代码片
WIFI_Dialog.XML

来自CODE的代码片
WifiPswDialog

来自CODE的代码片
click

来自CODE的代码片
OnCustomDialogListener

来自CODE的代码片
WifiPswDialog

来自CODE的代码片
snippet_file_0.txt