Android获取当前手机设备信息工具类

/** * 图像背景圆角处理 * bitmap要处理的图片 roundPx 图片弯角的圆度一般是5到10之间 */public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) { // 创建与原图大小一样的bitmap文件，Config.ARGB_8888根据情况可以改用其它的 Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); // 实例画布，绘制的bitmap将保存至output中 Canvas canvas = new Canvas(output); final int color = 0xff424242;//写自己需要的颜色值 final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(android.graphics.PorterDuff.Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); bitmap.recycle(); bitmap = null; return output;}/** * bitmap缩放 * width要缩放的宽度 height要缩放的高度 */public static Bitmap getBitmapDeflation(Bitmap bitmap, int width, int height, boolean recycle) { if (null == bitmap) { return null; } float scaleWidth = 0f; float scaleHeight = 0f; // 获取bitmap宽高 int bitmapWidth = bitmap.getWidth(); int bitmapHeight = bitmap.getHeight(); // 计算缩放比,图片的宽高小于指定的宽高则不缩放 if (width < bitmapWidth) { scaleWidth = ((float) width) / bitmapWidth; } else { scaleWidth = 1.00f; } if (height < bitmapHeight) { scaleHeight = ((float) height) / bitmapHeight; } else { scaleHeight = 1.00f; } Matrix matrix = new Matrix(); matrix.postScale(scaleWidth, scaleHeight); Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmapWidth, bitmapHeight, matrix, true); if (recycle && !bitmap.isRecycled()) { bitmap.recycle(); } bitmap = null; return newBitmap;}/** * * 方法概述：进入图片的大小与质量压缩，用于区分大小图片 */public static Bitmap getCompressedImage(String srcPath) { BitmapFactory.Options newOpts = new BitmapFactory.Options(); // 开始读入图片，此时把options.inJustDecodeBounds 设回true了 newOpts.inPreferredConfig = Bitmap.Config.RGB_565; newOpts.inPurgeable = true; newOpts.inJustDecodeBounds = true; FileInputStream is = null; try { is = new FileInputStream(srcPath); } catch (FileNotFoundException e) { e.printStackTrace(); } Bitmap bitmap = BitmapFactory.decodeStream(is, null, newOpts);// 此时返回bm为空 newOpts.inJustDecodeBounds = false; int w = newOpts.outWidth; int h = newOpts.outHeight; // 现在主流手机比较多是800*480分辨率，所以高和宽我们设置为 float hh = 130f;// 这里设置高度为800f float ww = 130f;// 这里设置宽度为480f // 缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可 int be = 1;// be=1表示不缩放 if (w > h && w > ww) {// 如果宽度大的话根据宽度固定大小缩放 be = (int) (newOpts.outWidth / ww); } else if (w < h && h > hh) {// 如果高度高的话根据宽度固定大小缩放 be = (int) (newOpts.outHeight / hh); } if (be <= 0) { be = 1; } newOpts.inSampleSize = be;// 设置缩放比例 // 重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了 bitmap = BitmapFactory.decodeFile(srcPath, newOpts); if (bitmap != null) { return compressImageSize(bitmap, 8);// 压缩好比例大小后再进行质量压缩 } return null;}/** * * 方法概述：图片质量压缩 */protected static Bitmap compressImageSize(Bitmap image, int size) { if (image == null) return image; ByteArrayOutputStream baos = new ByteArrayOutputStream(); image.compress(Bitmap.CompressFormat.JPEG, 100, baos);// 质量压缩方法，这里10表示不压缩，把压缩后的数据存放到baos中 int options = 100; while (baos.toByteArray().length / 1000 > size && options / 3 > 0) { // 循环判断如果压缩后图片是否大于10kb,大于继续压缩 baos.reset();// 重置baos即清空baos image.compress(Bitmap.CompressFormat.JPEG, options, baos);// 这里压缩options%，把压缩后的数据存放到baos中 options -= options / 3;// 每次都减少30% } ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());// 把压缩后的数据baos存放到ByteArrayInputStream中 Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);// 把ByteArrayInputStream数据生成图片 return bitmap;}/** * * 方法概述：保存图片 */public static String saveBitmapWithName(String path, String bitName, Bitmap mBitmap) { File f = new File(path + bitName + '.png'); String url = path + bitName + '.png'; try { f.createNewFile(); } catch (IOException e) { System.out.println('文件创建出错'); } FileOutputStream fOut = null; try { fOut = new FileOutputStream(f); } catch (FileNotFoundException e) { System.out.println(' 创建文件流失败'); e.printStackTrace(); } mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut); try { fOut.flush(); } catch (IOException e) { e.printStackTrace(); } try { fOut.close(); } catch (IOException e) { e.printStackTrace(); } return url;}/** * * 方法概述：根据传入参数保存图片 */public static boolean saveImageTo(Bitmap photo, String spath) { try { BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(spath, false)); photo.compress(Bitmap.CompressFormat.PNG, 100, bos); bos.flush(); bos.close(); } catch (Exception e) { e.printStackTrace(); return false; } return true;}