private void showDialog(){

final Dialog dialog = new Dialog(MainActivity.this, R.style.my_style);

dialog.setContentView(R.layout.help);

dialog.show();

ImageView imgView = (ImageView) dialog.findViewById(R.id.imageView_help);

imgView.setOnClickListener(new OnClickListener(){

@Override

public void onClick(View arg0) {

dialog.dismiss();

}

});

}

help.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="fill_parent"

    android:orientation="vertical" >

    <ImageView

        android:id="@+id/imageView_help"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:background="@drawable/help" />

</LinearLayout>

strings.xml

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

<resources>

    <string name="app_name">TestView</string>

    <string name="action_settings">Settings</string>

    <string name="hello_world">Hello world!</string>

    <style name="my_style">

        <item name="android:windowBackground">@color/back_color</item>

        <item name="android:windowNoTitle">true</item>

        <item name="android:windowIsTranslucent">true</item>

        <item name="android:windowAnimationStyle">@+android:style/Animation.Translucent</item>

    </style>

</resources>

color.xml

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

<resources>

    <drawable name="darkgray">#808080</drawable>

    <color name="back_color">#FF00FF</color>

    <color name="top">#33CCFF</color>

    <color name="top_background">#33CCFF</color>

</resources>

本文出自 “爬过山见过海” 博客，请务必保留此出处http://670176656.blog.51cto.com/4500575/1566766

android之style使用demo