android 设置壁纸几种方法

总结一下，android中设置壁纸几种方法

方法一: 获取WallpaperManager实例

 private void set_mytheme(int resid){      WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);         //   Resources res = getResources();                     try {                wallpaperManager.setResource(resid);            }            catch (IOException e) {                Toast.makeText(getApplicationContext(), "更换壁纸失败，强稍后重试", 200);          }       }

方法二：

 private void set_mytheme(int resid){     getWindow().setBackgroundDrawableResource(int resid);     }

方法三：

 private synchronized void selectWallpaper(int position) {               try {            InputStream stream = getResources().openRawResource(IMAGE_IDS[position]);            setWallpaper(stream);            setResult(RESULT_OK);                    } catch (IOException e) {            Log.e(LOG_TAG, "Failed to set wallpaper " + e);        }    }

方法四：
getWindow().setBackgroundDrawable(new ClippedDrawable(wallpaper));

/**     * When a drawable is attached to a View, the View gives the Drawable its dimensions     * by calling Drawable.setBounds(). In this application, the View that draws the     * wallpaper has the same size as the screen. However, the wallpaper might be larger     * that the screen which means it will be automatically stretched. Because stretching     * a bitmap while drawing it is very expensive, we use a ClippedDrawable instead.     * This drawable simply draws another wallpaper but makes sure it is not stretched     * by always giving it its intrinsic dimensions. If the wallpaper is larger than the     * screen, it will simply get clipped but it won't impact performance.     */    private class ClippedDrawable extends Drawable {        private final Drawable mWallpaper;        public ClippedDrawable(Drawable wallpaper) {            mWallpaper = wallpaper;        }        @Override        public void setBounds(int left, int top, int right, int bottom) {            super.setBounds(left, top, right, bottom);            // Ensure the wallpaper is as large as it really is, to avoid stretching it            // at drawing time            mWallpaper.setBounds(left, top, left + mWallpaper.getIntrinsicWidth(),                    top + mWallpaper.getIntrinsicHeight());        }        public void draw(Canvas canvas) {            mWallpaper.draw(canvas);        }        public void setAlpha(int alpha) {            mWallpaper.setAlpha(alpha);        }        public void setColorFilter(ColorFilter cf) {            mWallpaper.setColorFilter(cf);        }        public int getOpacity() {            return mWallpaper.getOpacity();        }    }

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