获取屏幕分辨率及获取设置壁纸分辨率

wpm = (WallpaperManager) getSystemService(WALLPAPER_SERVICE);

wallPaperWidth = wpm.getDesiredMinimumWidth();

wallPaperHeight = wpm.getDesiredMinimumHeight();

DisplayMetrics metrics = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(metrics);

wpm.suggestDesiredDimensions(metrics.widthPixels, metrics.heightPixels);

wpm.suggestDesiredDimensions(wallPaperWidth, wallPaperHeight);