圆角PopupWindow对话框和圆角EditText

Android默认的PopupWindow和EditText的外观是矩形框，看起来不是太好，本示例通过设置布局View的背景和PopupWindowd对象的背景，实现有白色圆角边框的对话框效果和圆角文字编辑框。代码如下（关键部分是背景布局XML）

效果图：
[img]

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工程结构图：
[img]

[/img]

Activity:

package com.test;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.text.InputType;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.PopupWindow;
import android.widget.LinearLayout.LayoutParams;


public class RoundCorner extends Activity {

	Button mButton; 

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		
		// 定义按钮
		mButton = (Button) this.findViewById(R.id.Button01);
		mButton.setOnClickListener(new ClickEvent());
		
		// 两个圆角文字编辑框
		EditText et1 = (EditText) this.findViewById(R.id.roundedtext1);
		EditText et2 = (EditText) this.findViewById(R.id.roundedtext2);
		et1.setInputType(InputType.TYPE_TEXT_FLAG_AUTO_CORRECT);
		et2.setInputType(InputType.TYPE_NULL); //不显示软键盘
		
	}

	// 处理按键事件
	class ClickEvent implements OnClickListener {
		@Override
		public void onClick(View v) {
			if (v == mButton) {
				showRoundCornerDialog(RoundCorner.this, RoundCorner.this.findViewById(R.id.Button01));
			}
		}
	}

	// 显示圆角对话框
	public void showRoundCornerDialog(Context context, View parent) {
		LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		
		// 获取圆角对话框布局View，背景设为圆角
		final View dialogView = inflater.inflate(R.layout.popupwindow, null, false);
		dialogView.setBackgroundResource(R.drawable.rounded_corners_view); 
		
		// 创建弹出对话框，设置弹出对话框的背景为圆角 
		final PopupWindow pw = new PopupWindow(dialogView, 300, LayoutParams.WRAP_CONTENT, true);
		pw.setBackgroundDrawable(getResources().getDrawable(R.drawable.rounded_corners_pop));
		
		//注：上面的设背景操作为重点部分，可以自行注释掉其中一个或两个设背景操作，查看对话框效果
		//注：上面的设背景操作为重点部分，可以自行注释掉其中一个或两个设背景操作，查看对话框效果
		
		final EditText edtUsername = (EditText) dialogView.findViewById(R.id.username_edit);
		final EditText edtPassword = (EditText) dialogView.findViewById(R.id.password_edit);
		edtUsername.setHint("用户名..."); // 设置提示语
		edtPassword.setHint("密码...");   // 设置提示语

		// OK按钮及其处理事件
		Button btnOK = (Button) dialogView.findViewById(R.id.BtnOK);
		btnOK.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// 设置文本框内容
				edtUsername.setText("username");
				edtPassword.setText("password");
			}
		});

		// Cancel按钮及其处理事件
		Button btnCancel = (Button) dialogView.findViewById(R.id.BtnCancel);
		btnCancel.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				pw.dismiss();// 关闭
			}
		});
		
		// 显示RoundCorner对话框
		pw.showAtLocation(parent, Gravity.CENTER|Gravity.BOTTOM, 0, 0);
	}
	
}

rounded_corners_pop.xml：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
	<solid android:color="#ffffffff" />
	
	<stroke android:width="3dp" color="#ffff8080" />
	
	<corners android:radius="10dp" />
	
	<padding android:left="3dp" android:top="3dp" 
		android:right="3dp" android:bottom="3dp" />
</shape>

rounded_corners_view.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
	<solid android:color="#ff606060" />
	
	<stroke android:width="3dp" color="#ffff8080" />
	
	<corners android:radius="10dp" />
	
	<padding android:left="5dp" android:top="5dp" 
		android:right="5dp" android:bottom="5dp" />
</shape>

rounded_edittext_states.xml

<?xml version="1.0" encoding="utf-8"?> 
<!-- res/drawable/rounded_edittext_states.xml --> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
    <item  
     	android:state_pressed="true"  
     	android:state_enabled="true" 
        android:drawable="@drawable/rounded_focused" /> 
    <item  
     	android:state_focused="true"  
     	android:state_enabled="true" 
        android:drawable="@drawable/rounded_focused" /> 
    <item  
     	android:state_enabled="true" 
        android:drawable="@drawable/rounded_edittext" /> 
</selector> 

rounded_edittext.xml

<?xml version="1.0" encoding="utf-8"?> 
<!--  res/drawable/rounded_edittext.xml --> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
	android:shape="rectangle" 
	android:padding="8dip"> 
 	<solid android:color="#FFFFFF"/> 
    <corners 
     	android:bottomRightRadius="10dip" 
     	android:bottomLeftRadius="10dip" 
  		android:topLeftRadius="10dip" 
  		android:topRightRadius="10dip"/> 
</shape>

rounded_focused.xml

<?xml version="1.0" encoding="utf-8"?> 
<!-- res/drawable/rounded_edittext_focused.xml --> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
	android:shape="rectangle" 
	android:padding="8dip"> 
 	<solid android:color="#FFFFFF"/> 
 	<stroke android:width="2dip" android:color="#FF0000" /> 
    <corners 
     	android:bottomRightRadius="10dip" 
     	android:bottomLeftRadius="10dip" 
  		android:topLeftRadius="10dip" 
  		android:topRightRadius="10dip"/> 
</shape> 

popupwindow.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent" android:layout_height="wrap_content"
	android:orientation="vertical">

	<TextView android:id="@+id/username_view"
		android:layout_height="wrap_content"
		android:layout_width="fill_parent"
		android:layout_marginLeft="10dip"
		android:layout_marginRight="10dip" 
		android:text="用户名"
		android:textAppearance="?android:attr/textAppearanceMedium"/>

	<EditText android:id="@+id/username_edit"
		android:layout_height="wrap_content"
		android:layout_width="fill_parent" 
		android:layout_marginLeft="10dip"
		android:layout_marginRight="10dip" 
		android:capitalize="none"
		android:textAppearance="?android:attr/textAppearanceMedium" />

	<TextView android:id="@+id/password_view"
		android:layout_height="wrap_content"
		android:layout_width="fill_parent"
		android:layout_marginLeft="10dip"
		android:layout_marginRight="10dip" 
		android:text="密码"
		android:textAppearance="?android:attr/textAppearanceMedium"/>

	<EditText android:id="@+id/password_edit"
		android:layout_height="wrap_content"
		android:layout_width="fill_parent" 
		android:layout_marginLeft="10dip"
		android:layout_marginRight="10dip" 
		android:capitalize="none"
		android:password="true"
		android:textAppearance="?android:attr/textAppearanceMedium" />

	<LinearLayout android:id="@+id/LinearLayout01"
		android:layout_height="wrap_content" 
		android:layout_width="fill_parent"
		android:gravity="center"
		android:paddingLeft="10dip"
		android:paddingRight="10dip">
		
		<Button android:id="@+id/BtnOK"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" 
			android:layout_weight="1" 
			android:text="确定"/>
			
		<Button android:id="@+id/BtnCancel"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" 
			android:layout_weight="1"
			android:text="取消"/>
	</LinearLayout>

</LinearLayout>