Android之AlertDialog自定义对话框

自定义布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="34dp"
        android:textSize="20sp"
        android:text="用户名:" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/textView1"
        android:layout_toRightOf="@+id/textView1"
        android:ems="10" >

    </EditText>

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText1"
        android:layout_marginTop="37dp"
        android:layout_toLeftOf="@+id/editText1"
        android:textSize="20sp"
        android:text="密码:" />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/editText1"
        android:layout_alignTop="@+id/textView2"
        android:layout_centerHorizontal="true"
        android:ems="10"
        android:inputType="textPassword" >

    </EditText>


</RelativeLayout>

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="com.example.android_dialogpersonal.MainActivity" >

    <Button
        android:id="@+id/main_btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="112dp"
        android:text="自定义对话框" />
	
</RelativeLayout>

package com.example.android_dialogpersonal;

import android.support.v7.app.ActionBarActivity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
	private Button main_btn1;
	private Button dia_btn1;
	private Button dia_btn2;
	//private AlertDialog.Builder builder;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		main_btn1=(Button) this.findViewById(R.id.main_btn1);
		//dia_btn1=(Button) this.findViewById(R.id.dia_btn1);
		//dia_btn2=(Button) this.findViewById(R.id.dia_btn2);
		
		main_btn1.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
				builder.setTitle("自定义对话框");
				View view=LayoutInflater.from(MainActivity.this).inflate(R.layout.dialog, null);//加载layout中创建的view(dialog)
				final EditText username=(EditText) view.findViewById(R.id.editText1);
				final EditText password=(EditText) view.findViewById(R.id.editText2);
				builder.setView(view);
				builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface dialog, int which) {
						// TODO Auto-generated method stub
						String a=username.getText().toString().trim();
						String b=password.getText().toString().trim();
						Toast.makeText(MainActivity.this, "--->>"+a+"--->>"+b, 1).show();
					}
				});
				builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface dialog, int which) {
						// TODO Auto-generated method stub
						
					}
				});
				builder.show();
			}
		});
	}

	@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 boolean onOptionsItemSelected(MenuItem item) {
		// Handle action bar item clicks here. The action bar will
		// automatically handle clicks on the Home/Up button, so long
		// as you specify a parent activity in AndroidManifest.xml.
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
}

运行效果图