今天和大家讲一下怎么样简单的把壁纸作为背景，在中间加一个textview效果图如下

<activity android:name="MainActivity" 
		android:theme="@style/Theme.Wallpaper"  >
			<intent-filter>
				<action android:name="android.intent.action.MAIN" />
				<category android:name="android.intent.category.LAUNCHER" />
			</intent-filter>
		</activity>

Activity的配置如上。。重点就是加了一个样式。。。网页有CSS/DIV ,android有样式和主题

android:theme="@style/Theme.Wallpaper"

res/values/styles.xml代码如下

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

<resources>
  
    <style name="Theme.Wallpaper" parent="android:style/Theme.Wallpaper">
        <item name="android:colorForeground">#FF0099</item>
    </style>

</resources>

main.xml代码如下

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

<TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/text"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:gravity="center_vertical|center_horizontal"
    android:text="[email protected]"/>

MainActivity.java代码如下

package com.test.activity;

import java.io.IOException;


import android.app.Activity;
import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.PorterDuff;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ImageView.ScaleType;

public class MainActivity extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// Be sure to call the super class.
		super.onCreate(savedInstanceState);
		// See res/layout/wallpaper_2.xml for this
		// view layout definition, which is being set here as
		// the content of our screen.
		setContentView(R.layout.main);
	}
}