我为我的幻灯片动态壁纸创建了一个首选项文件。
大部分来源都是从几个样本中复制而来的。我认为我正确地复制了它们，并且 Eclipse 没有显示我的源代码的警告或错误。
我的问题是当我选择动态壁纸时没有出现“设置”按钮。
我检查了非常接近的问题“无法获取设置按钮以显示动态壁纸”，但它并没有解决我的问题。
我怀疑我的清单或偏好来源有问题，但我找不到重点。
对不起，我的英语不好。
我的来源如下：
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest package="sample.slide_wallpaper"
android:versionCode="1"
android:versionName="1.0"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-sdk android:minSdkVersion="7" android:targetSdkVersion="8" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:icon="@drawable/icon"
android:label="@string/app_name">
<!-- =========================================================== -->
<!-- Launcher -->
<activity android:name=".Launcher" android:label="@string/app_name"
android:theme="@style/Theme.HalfTrans">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- ==============================================================-->
<!-- Live Wallpaper -->
<service
android:enabled="true"
android:permission="android.permission.BIND_WALLPAPER"
android:label="@string/app_name"
android:name="SlideWallpaper"
android:icon="@drawable/thumbnail">
<intent-filter>
<action android:name="android.service.wallpaper.WallpaperService"></action>
</intent-filter>
<meta-data
android:name="android.service.wallpaper"
android:resource="@xml/wallpaper">
</meta-data>
</service>
<!-- ================================================================= -->
<!-- Preferences -->
<activity
android:name="sample.slide_wallpaper.Prefs"
android:label="@string/wallpaper_settings"
android:theme="@android:style/Theme.WallpaperSettings"
android:exported="true">
<intent-filter>
<category android:name="android.intent.category.PREFERENCE" />
</intent-filter>
</activity>
</application>
</manifest>
设置.xml
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android"
android:title="@string/wallpaper_settings"
>
<ListPreference
android:key="timer_key"
android:title="@string/list_title"
android:summary="@string/list_summary"
android:entries="@array/timer_pref"
android:entryValues="@array/timer_pref_values"
android:defaultValue="5000"
/>
</PreferenceScreen>
**wallpaper.xml**
<?xml version="1.0" encoding="utf-8" ?>
<wallpaper xmlns:android="http://shemas.android.com/apk/res/android"
android:thumbnail="@drawable/thumbnail"
android:description="@string/description"
android:settingsActivity="sample.slidewallpaper.Prefs"
/>
**Prefs.java**
package sample.slide_wallpaper;
import sample.slide_wallpaper.R;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.util.Log;
public class Prefs extends PreferenceActivity
implements SharedPreferences.OnSharedPreferenceChangeListener {
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
Log.w("Prefs", "prefs onCreate");
addPreferencesFromResource(R.xml.settings);
}
@Override
protected void onDestroy()
{
getPreferenceManager().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
super.onDestroy();
}
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key)
{
}
}
SlideWallpaper.java
package sample.slide_wallpaper;
import java.util.Random;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Handler;
import android.service.wallpaper.WallpaperService;
import android.util.Log;
import android.view.Display;
import android.view.SurfaceHolder;
import android.view.WindowManager;
import android.content.SharedPreferences;
import android.content.res.Resources;
//WallpaperService
public class SlideWallpaper extends WallpaperService {
// Path for Prefs
public static final String SHARED_PREFS_NAME = "sample.slide_wallpaper.Prefs";
@Override
public void onCreate() {
.....
super.onCreate();
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public WallpaperService.Engine onCreateEngine() {
return new WallpaperEngine(getResources());
}
//*********************************************************
//Wallpaper Engine
//*********************************************************
public class WallpaperEngine extends Engine
implements SharedPreferences.OnSharedPreferenceChangeListener {
private final Handler handler=new Handler();
SharedPreferences prefs;
public Bitmap img;
private Bitmap images[] = new Bitmap[5];
private Bitmap eximg;
private final Random randGen = new Random();
private static final String TAG = "WallpaperEngine";
//timer
private long timer = 5000;//interval(sec)×1000
private long startTime = 0;
private int currentAlpha;
private final Paint imagePaint;
private final Runnable drawThread=new Runnable() {
public void run() {
Log.d(TAG,"runnable");
drawFrame();
}
};
public WallpaperEngine(Resources r) {
prefs=SlideWallpaper.this.getSharedPreferences(SHARED_PREFS_NAME, 0);
prefs.registerOnSharedPreferenceChangeListener(this);
images[0]=BitmapFactory.decodeResource(r,R.drawable.imgA);
images[1]=BitmapFactory.decodeResource(r,R.drawable.imgB);
images[2]=BitmapFactory.decodeResource(r,R.drawable.imgC);
images[3]=BitmapFactory.decodeResource(r,R.drawable.imgD);
images[4]=BitmapFactory.decodeResource(r,R.drawable.imgE);
eximg = BitmapFactory.decodeResource(r,R.drawable.bg1);
img = eximg;
imagePaint = new Paint();
imagePaint.setAlpha(255);
}
//=============================
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key){
Log.w(TAG, "onPreferenceChanged");//this Log doesn't show up
String listString = prefs.getString("timer_key", "5000");
int listInt = Integer.parseInt(listString);
timer = listInt;
}
//=================================
@Override
public void onCreate(SurfaceHolder surfaceHolder) {
super.onCreate(surfaceHolder);
Log.d(TAG, "onCreate");
drawFrame();
}
//=====================================
@Override
public void onDestroy() {
super.onDestroy();
handler.removeCallbacks(fadeAnimate);
handler.removeCallbacks(drawThread);
}
//==================================
@Override
public void onVisibilityChanged(boolean visible) {
Log.d(TAG, "Visibility changed");
if (visible) {
if(nowTime() - startTime + 100 < timer){
if (img.isRecycled()) {
img = eximg;
}
drawBitmap(img);
handler.postDelayed(drawThread, timer - (nowTime() - startTime));
}else {
drawFrame();
}
} else {
handler.removeCallbacks(fadeAnimate);
handler.removeCallbacks(drawThread);
}
}
//===================================================
//draws bitmap
private void drawBitmap(Bitmap b) {
............
}
//=========================
@Override
public void onSurfaceCreated(SurfaceHolder holder) {
super.onSurfaceCreated(holder);
}
//============================
@Override
public void onSurfaceChanged(SurfaceHolder holder,
int format,int width,int height) {
super.onSurfaceChanged(holder,format,width,height);
drawFrame();
}
//==============================
@Override
public void onSurfaceDestroyed(SurfaceHolder holder) {
super.onSurfaceDestroyed(holder);
handler.removeCallbacks(fadeAnimate);
handler.removeCallbacks(drawThread);
}
//=================================
@Override
public void onOffsetsChanged(float xOffset,float yOffset,
float xStep,float yStep,int xPixels,int yPixels) {
drawBitmap(img);
}
//=================================================
//Changes image==================================
protected void drawFrame() {
.....
}
private final Runnable fadeAnimate = new Runnable() {
public void run() {
fadeTransition(img, currentAlpha);
}
};
private void fadeTransition(Bitmap b, int alpha) {
.....
}//END fadeTransition
private long nowTime() {
return System.nanoTime() / 1000000;
}
}//Engine
}//END
我真的需要你的帮助！！
此外，缩略图图像不会显示在动态壁纸列表中。但这是一个小问题。