Android設置默認鎖屏壁紙接口的方法
本文實例為大傢分享瞭Android設置默認鎖屏壁紙接口的具體代碼,供大傢參考,具體內容如下
完成自定義service後,接下來就是具體實現接口
1、在frameworks/base/core/java/android/app/customized/ICustomizedService.aidl中定義接口
boolean setLockScreenWallpaper(String uri);
2、在frameworks/base/core/java/android/app/customized/CustomizedManager.java中實現接口
package android.app.customized; import android.util.Log; import android.content.Context; import android.content.Intent; import android.os.Binder; import android.os.RemoteException; import android.provider.Settings; import java.io.IOException; import android.os.ServiceManager; import android.os.IBinder; import java.util.List; import android.app.ActivityManager; import android.graphics.Bitmap; public class CustomizedManager{ private static final String TAG="CustomizedManager"; private static final boolean DBG=true; private static ICustomizedService mService; private final Context mContext; public CustomizedManager(Context context){ mContext = context; mService = ICustomizedService.Stub.asInterface( ServiceManager.getService("customized")); } private static ICustomizedService getService(){ if (mService != null) { return mService; } IBinder b = ServiceManager.getService("customized" mService = ICustomizedService.Stub.asInterface(b); return mService; } public boolean setLockScreenWallpaper(String uri) { try { getService().setLockScreenWallpaper(uri); } catch (RemoteException e) { } return false; } }
3、在frameworks/base/services/core/java/com/android/server/customized/CustomizedService.java中對AIDL文件中定義的接口進行具體實現.
package com.android.server.customized; import android.os.IBinder; import android.os.ServiceManager; import android.content.Context; import android.content.Intent; import android.os.Binder; import android.app.customized.ICustomizedService; import android.content.BroadcastReceiver; import android.view.IWindowManager; import android.view.WindowManagerGlobal; import android.graphics.BitmapFactory; public class CustomizedService extends ICustomizedService.Stub { private static final String TAG = "CustomizedService "; private Context mContext; public static class Lifecycle extends SystemService { private CustomizedService mService; public Lifecycle(Context context) { super(context); } @Override public void onStart() { mService = new CustomizedService (getContext()); publishBinderService(Context.CUSTOMIZED, mService); } @Override public void onBootPhase(int phase) { } @Override public void onUnlockUser(int userHandle) { } } public CustomizedService (Context context) { mContext = context; } public boolean setLockScreenWallpaper(String uri) { if (uri == null || "".equals(uri)) return false; File file = new File(uri); if (!file.exists()) { return false; } Log.d(TAG, "setLockScreenWallpaper uri===============" + uri); long ident = Binder.clearCallingIdentity(); Intent sendlock = new Intent(); String packageName = "com.android.launcher3"; String serviceClassName = packageName + ".LockScreenWallPaperService"; sendlock.putExtra("path", uri); sendlock.setComponent(new ComponentName(packageName, serviceClassName)); mContext.startServiceAsUser(sendlock, UserHandle.OWNER); Binder.restoreCallingIdentity(ident); return true; } }
4、在packages/apps/Launcher3/AndroidManifest.xml中註冊LockScreenWallPaperService
<service android:name="com.android.launcher3.LockScreenWallPaperService" android:exported="true" > <intent-filter> <action android:name="com.android.launcher.action.SET_LOCKSCREENWALLPAPER_SERVICE" /> </intent-filter> </service>
5、因為我們隻是在CustomizedService 中調用setLockScreenWallpaper方法啟動LockScreenWallPaperService,所以設置默認wallpaper還是要由setLockScreenWallpaper實現的.下面要實現LockScreenWallPaperService瞭,路徑為packages/apps/Launcher3/src/com/android/launcher3/LockScreenWallPaperService.java
package com.android.launcher3; import android.app.Service; import android.os.*; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.content.Context; import android.content.Intent; import android.graphics.Matrix; import android.util.Log; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; public class LockScreenWallPaperService extends Service { private String TAG = "LockScreenWallPaperService"; private String path = ""; @Override public void onCreate() { } @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.d(TAG, "onStartCommand "); if (intent != null) { path = intent.getStringExtra("path"); } Bitmap bitmap = BitmapFactory.decodeFile(path); SavePicToLocal savePic = new SavePicToLocal(bitmap); savePic.execute("save picture"); return START_STICKY; } public boolean dumpBitmap(Bitmap mBitmap) throws FileNotFoundException { Log.d(TAG, "dumpBitmap"); boolean flagSaveCompelete = false; Bitmap bitmap_land, bitmap_port; int height = mBitmap.getHeight(); int width = mBitmap.getWidth(); int lswidth = 1920; int lsheight = 1200; float lper = Math.max((float) lswidth / (float) width, (float) lsheight / (float) height); if (lper > 1) { Matrix lmatrix = new Matrix(); lmatrix.postScale(lper, lper); bitmap_land = Bitmap.createBitmap(mBitmap, (int) ((mBitmap.getWidth() - lswidth / lper) / 2), (int) ((mBitmap.getHeight() - lsheight / lper) / 2), (int) (lswidth / lper), (int) (lsheight / lper), lmatrix, true); } else { bitmap_land = Bitmap.createBitmap(mBitmap, (int) ((mBitmap.getWidth() - lswidth) / 2), (int) ((mBitmap.getHeight() - lsheight) / 2), lswidth, lsheight, null, true); } int pswidth = 1200; int psheight = 1920; float pper = Math.max((float) pswidth / (float) width, (float) psheight / (float) height); if (pper > 1) { Matrix pmatrix = new Matrix(); pmatrix.postScale(pper, pper); bitmap_port = Bitmap.createBitmap(mBitmap, (int) ((mBitmap.getWidth() - pswidth / pper) / 2), (int) ((mBitmap.getHeight() - psheight / pper) / 2), (int) (pswidth / pper), (int) (psheight / pper), pmatrix, true); } else { bitmap_port = Bitmap.createBitmap(mBitmap, (int) ((mBitmap.getWidth() - pswidth) / 2), (int) ((mBitmap.getHeight() - psheight) / 2), pswidth, psheight, null, true); } Matrix matrix = new Matrix(); matrix.postScale(0.5f, 0.5f); bitmap_land = Bitmap.createBitmap(bitmap_land, 0, 0, bitmap_land.getWidth(), bitmap_land.getHeight(), matrix, true); bitmap_port = Bitmap.createBitmap(bitmap_port, 0, 0, bitmap_port.getWidth(), bitmap_port.getHeight(), matrix, true); flagSaveCompelete = saveBitmapToFile( bitmap_port, "/data/local/tmp/lockscreenwallpaper/keyguard_wallpaper_land.png", 1); flagSaveCompelete = saveBitmapToFile( bitmap_land, "/data/local/tmp/lockscreenwallpaper/keyguard_wallpaper_port.png", 2); return flagSaveCompelete; } private boolean saveBitmapToFile(Bitmap bitmap, String path, int isRecycle) throws FileNotFoundException { Log.d(TAG, "saveBitmapToFile ident=" + "bitmap" + bitmap); boolean result = false; if (bitmap == null) return result; Bitmap tmpbm = null; java.io.FileOutputStream tmpfos = null; try { tmpbm = bitmap; tmpfos = new java.io.FileOutputStream(path); tmpbm.compress(Bitmap.CompressFormat.PNG, 100, tmpfos); Log.d(TAG, "saveBitmapToFile compress"); } catch (FileNotFoundException ex) { Log.d(TAG, "ex1" + ex); throw ex; } catch (java.io.IOException ex) { Log.d(TAG, "ex2" + ex); ex.printStackTrace(); } finally { if (tmpfos != null) { try { Log.d(TAG, "tmpfos.close() "); tmpfos.close(); result = true; } catch (java.io.IOException ex) { Log.d(TAG, "ex3" + ex); } } if (tmpbm != null && !tmpbm.isRecycled()) if (isRecycle == 2) { tmpbm.recycle(); } } return result; } class SavePicToLocal extends AsyncTask<String, Integer, Boolean> { Bitmap bitmap; public SavePicToLocal(Bitmap mBitmap) { bitmap = mBitmap; } @Override protected Boolean doInBackground(String... params) { return dumpBitmaps(); } private boolean dumpBitmaps() { boolean flag = false; try { flag = dumpBitmap(bitmap); flag = true; } catch (FileNotFoundException e) { } return flag; } @Override protected void onPostExecute(Boolean result) { if (result) { sendBroadcast(new Intent( "android.intent.action.UPDATE_LOCK_WALLPAPER")); Log.d(TAG, "send UPDATE_LOCK_WALLPAPER"); } } @Override protected void onProgressUpdate(Integer... values) { super.onProgressUpdate(values); } } @Override public IBinder onBind(Intent intent) { return null; } }
然後編譯一下,就可以通過接口設置默認桌面瞭,大功告成
以上就是本文的全部內容,希望對大傢的學習有所幫助,也希望大傢多多支持WalkonNet。
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