Android窗口为弹出框样式

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.fish.helloworld"
android:versionCode="1"
android:versionName="1.0" > <uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="17" /> <application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.Dialog" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_receive" >
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application></manifest>