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    package com.easyway.android.diaglog;


import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
/**
 * Android獲取dialog自定義布局中的控件  中特定的對象比較特殊必須通過
 *  	//獲取布局相關的對象
 *   	LayoutInflater inflater=LayoutInflater.from(this);
 *   	//獲取相關的布局
 *   	View layout = inflater.inflate(R.layout.send_email_dialog, (ViewGroup) findViewById(R.id.send_email_dialog_ll))
 *      final EditText sendEmailCon_ET = (EditText) layout.findViewById(R.id.send_email_dialog_et);
 *
 *
 * @author longgangbai
 *
 */
public class CustomDiaglogActivity extends Activity {
    private final int CUSTOM_DIALOG = 1;   
	private Button diagbtn;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //設置當前的布局
        setContentView(R.layout.main);
        //獲取按鈕
        diagbtn=(Button)findViewById(R.id.btndiaglog);
        //設置按鈕的事件
        View.OnClickListener dateBtnListener =   
            new BtnOnClickListener(CUSTOM_DIALOG);      
        diagbtn.setOnClickListener(dateBtnListener);   
    }
    /**
     * 重寫Activity的方法實現相關的不同
     * 
     * 按鈕的實現不同對話框
     * 	
     * 
     * 想要獲取自定義布局中的控件必須調用你所定義的View的findViewById方法，而不能像獲得其他控件一樣直接調用findViewById方法。。。
     */
    @Override
    protected Dialog onCreateDialog(int id) {   
    	//自定義對話框
    	AlertDialog.Builder builder= new Builder(CustomDiaglogActivity.this);
    	//獲取布局相關的對象
    	LayoutInflater inflater=LayoutInflater.from(this);
    	//獲取相關的布局
    	View layout = inflater.inflate(R.layout.send_email_dialog, (ViewGroup) findViewById(R.id.send_email_dialog_ll)); 
    	//設置相關的視圖
    	builder.setView(layout);
    	//設置標題
    	builder.setTitle("反饋意見");
    	//確定按鈕的操作
    	builder.setPositiveButton("確認",new OnClickListener(){
    		    @Override
    		    public void onClick(DialogInterface dialog, int which) {
	    		    //銷毀對話框
    		    	dialog.dismiss();
	    		    CustomDiaglogActivity.this.finish();
    		   }
    	});
    	//取消按鈕的操作
    	builder.setNegativeButton("取消",new OnClickListener(){
		    @Override
		    public void onClick(DialogInterface dialog, int which) {
    		    dialog.dismiss();
		   }
	    });
    	return builder.create();
    }
    
    
    /**   
     * 成員內部類,此處為提高可重用性，也可以換成匿名內部類   
     */   
    private class BtnOnClickListener implements View.OnClickListener {      
        private int dialogId = 0;   //默認為0則不顯示對話框      
        public BtnOnClickListener(int dialogId) {   
            this.dialogId = dialogId;   
        }   
        @Override   
        public void onClick(View view) {   
            showDialog(dialogId);   
        }      
    }   
}
  

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send_mail_dialog.xml

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@+id/send_email_dialog_ll"
	android:orientation="vertical"
	android:layout_width="match_parent"
	android:layout_height="match_parent">
    <TextView
    	android:layout_width="wrap_content"
    	android:textAppearance="?android:attr/textAppearanceMedium"
    	android:layout_height="wrap_content"
    	android:text="To : longgangbai@sina.com"
    	android:layout_gravity="center"
    	android:layout_marginTop="4dp" />
    <EditText
    	android:id="@+id/send_email_dialog_et"
    	android:layout_height="wrap_content"
    	android:layout_width="fill_parent"
    	android:inputType="textMultiLine"
    	android:lines="4"
    	android:hint="@string/message"
    	android:scrollbarAlwaysDrawVerticalTrack="true"
    	android:layout_marginTop="9dp">
        <requestFocus></requestFocus>
    </EditText>
</LinearLayout>
  

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Android自定義對話框的使用