这是个全民看脸的时代，手机也一样。漂亮的APP给手机增色不少，那就赶紧给你这个女朋友打扮一下吧。
从设置静态壁纸，到动态壁纸，到锁屏壁纸，再到主题，其实也没那么简单。
1、设置静态壁纸
MainActivity.java
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wallpaperManager = WallpaperManager.getInstance(this);
registerReceiver(broadcastReceiver, new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED));
}
WallpaperManager wallpaperManager;
public void onClick(View v){
switch(v.getId()){
case R.id.btn_setWallpaper:
File file = new File(Environment.getExternalStorageDirectory()+"/pictures/field.png");
try {
InputStream is = new FileInputStream(file);
//ContextWrapper方法，可读Bitmap、InputStream
//需SET_WALLPAPER权限。读文件需WRITE_EXTERNAL_STORAGE权限
setWallpaper(is);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
break;
case R.id.btn_setWallpaper2:
//可加载res、InputStream、Bitmap
try {
wallpaperManager.setResource(R.drawable.frame);
} catch (IOException e) {
e.printStackTrace();
}
break;
case R.id.btn_clearWallpaper:
//清除壁纸
try {
wallpaperManager.clear();
} catch (IOException e) {
e.printStackTrace();
}
}
}
//接收壁纸改变广播
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals(Intent.ACTION_WALLPAPER_CHANGED)){
Toast.makeText(MainActivity.this, "已更改墙纸", Toast.LENGTH_SHORT).show();
}
}
};
}activity_main.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<Button
android:id="@+id/btn_setWallpaper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="onClick"
android:text="setWallpaper"/>
<Button
android:id="@+id/btn_setWallpaper2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="onClick"
android:text="setWallpaper2"/>
<Button
android:id="@+id/btn_clearWallpaper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="onClick"
android:text="clearWallpaper"/>
</LinearLayout>2、设置动态壁纸
MyWallpaperService.java，每次从动态壁纸库选择当前壁纸会触发该Service实例化并调用onCreateEngine
/**
* 包装器Service，用来实例化和管理Engine
*/
public class MyWallpaperService extends WallpaperService {
private static final String TAG = MyWallpaperService.class.getSimpleName();
public MyWallpaperService(){
super();
Log.d(TAG, "MyWallpaperService");
}
@Override
public Engine onCreateEngine() {
Log.d(TAG, "onCreateEngine");
return new MyWallpaperServiceEngine(this);
}
}MyWallpaperServiceEngine.java/**
* Engine封装一个用于显示墙纸的SurfaceView
* <P>SurfaceView双缓存机制：一个front buffer，一个back buffer。假设当前显示的是front，若内容发生变化，
* back在原来基础上把内容画好。然后back和front交换位置。<P>
*/
public class MyWallpaperServiceEngine extends WallpaperService.Engine {
private static final String TAG = MyWallpaperServiceEngine.class.getSimpleName();
//每秒30个frame
private static final int FPS = 5;
private final Handler handler = new Handler();
public MyWallpaperServiceEngine(WallpaperService wp){
wp.super();
paint = new Paint();
paint.setARGB(255, 255, 255, 255);
}
@Override
public void onCreate(SurfaceHolder surfaceHolder) {
super.onCreate(surfaceHolder);
}
@Override
public void onOffsetsChanged(float xOffset, float yOffset,
float xOffsetStep, float yOffsetStep, int xPixelOffset,
int yPixelOffset) {
super.onOffsetsChanged(xOffset, yOffset, xOffsetStep, yOffsetStep, xPixelOffset, yPixelOffset);
}
@Override
public void onTouchEvent(MotionEvent event) {
super.onTouchEvent(event);
}
Timer timer;
@Override
public void onSurfaceCreated(SurfaceHolder holder) {
super.onSurfaceCreated(holder);
timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
drawFrame();
}
}, 0, 1000/FPS);
}
public void onSurfaceDestroyed(SurfaceHolder holder) {
timer.cancel();
};
Paint paint;
float y = 300f;
private void drawFrame(){
final SurfaceHolder holder = getSurfaceHolder();
Canvas canvas = null;
try{
canvas = holder.lockCanvas(new Rect(100, 100, 500, 1100));
if(canvas!=null){
//清屏，重置像素数组
canvas.drawColor(Color.BLACK);
//在画布上绘制
canvas.drawCircle(300f, y, 200f, paint);
y += 20f;
if(y>900f){
y = 300f;
}
}
}finally{
if(canvas!=null){
holder.unlockCanvasAndPost(canvas);
}
}
// handler.removeCallbacks(drawSurface);
// handler.postDelayed(drawSurface, 1000/FPS);
}
private final Runnable drawSurface = new Runnable() {
@Override
public void run() {
drawFrame();
}
};
}AndroidManifest.xml<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.qinuli.compiletest"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.SET_WALLPAPER"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="14" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:permission="android.permission.BIND_WALLPAPER" >
<activity android:name="com.qinuli.compiletest.MainActivity">
<intent-filter >
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name="com.qinuli.compiletest.SettingsActivity"></activity>
<service android:name="com.qinuli.compiletest.MyWallpaperService">
<intent-filter >
<action android:name="android.service.wallpaper.WallpaperService"/>
</intent-filter>
<meta-data
android:name="android.service.wallpaper"
android:resource="@xml/mylivewallpaper"/>
</service>
</application>
</manifest>mylivewallpaper.xml<wallpaper
xmlns:android="http://schemas.android.com/apk/res/android"
android:author="@string/author"
android:description="@string/description"
android:thumbnail="@drawable/wallpapericon"
android:settingsActivity="com.qinuli.compiletest.SettingsActivity"/>res/values/strings.xml<string name="author">石鑫</string> <string name="description">实时交互壁纸</string>SettingsActivity.java
public class SettingsActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
}
}activity_settings.xml<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Feel free to ask!"/>
</LinearLayout>原文：http://blog.csdn.net/talk2soul/article/details/45173185