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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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








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//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








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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








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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
				


				
时间： 2024-11-21 05:44:41

		
		


		


	

	
	

		


		
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