图片圆角、缩放等效果工具类
public class ImageUtil { public static InputStream getRequest(String path) throws Exception { URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setConnectTimeout(5000); if (conn.getResponseCode() == 200){ return conn.getInputStream(); } return null; } public static byte[] readInputStream(InputStream inStream) throws Exception { ByteArrayOutputStream outSteam = new ByteArrayOutputStream(); byte[] buffer = new byte[4096]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outSteam.write(buffer, 0, len); } outSteam.close(); inStream.close(); return outSteam.toByteArray(); } public static Drawable loadImageFromUrl(String url){ URL m; InputStream i = null; try { m = new URL(url); i = (InputStream) m.getContent(); } catch (MalformedURLException e1) { e1.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } Drawable d = Drawable.createFromStream(i, "src"); return d; } public static Drawable getDrawableFromUrl(String url) throws Exception{ return Drawable.createFromStream(getRequest(url),null); } public static Bitmap getBitmapFromUrl(String url) throws Exception{ byte[] bytes = getBytesFromUrl(url); return byteToBitmap(bytes); } public static Bitmap getRoundBitmapFromUrl(String url,int pixels) throws Exception{ byte[] bytes = getBytesFromUrl(url); Bitmap bitmap = byteToBitmap(bytes); return toRoundCorner(bitmap, pixels); } public static Drawable geRoundDrawableFromUrl(String url,int pixels) throws Exception{ byte[] bytes = getBytesFromUrl(url); BitmapDrawable bitmapDrawable = (BitmapDrawable)byteToDrawable(bytes); return toRoundCorner(bitmapDrawable, pixels); } public static byte[] getBytesFromUrl(String url) throws Exception{ return readInputStream(getRequest(url)); } public static Bitmap byteToBitmap(byte[] byteArray){ if(byteArray.length!=0){ return BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length); } else { return null; } } public static Drawable byteToDrawable(byte[] byteArray){ ByteArrayInputStream ins = new ByteArrayInputStream(byteArray); return Drawable.createFromStream(ins, null); } public static byte[] Bitmap2Bytes(Bitmap bm){ ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, 100, baos); return baos.toByteArray(); } public static Bitmap drawableToBitmap(Drawable drawable) { Bitmap bitmap = Bitmap .createBitmap( drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); drawable.draw(canvas); return bitmap; } /** * 图片去色,返回灰度图片 * @param bmpOriginal 传入的图片 * @return 去色后的图片 */ public static Bitmap toGrayscale(Bitmap bmpOriginal) { int width, height; height = bmpOriginal.getHeight(); width = bmpOriginal.getWidth(); Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565); Canvas c = new Canvas(bmpGrayscale); Paint paint = new Paint(); ColorMatrix cm = new ColorMatrix(); cm.setSaturation(0); ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm); paint.setColorFilter(f); c.drawBitmap(bmpOriginal, 0, 0, paint); return bmpGrayscale; } /** * 去色同时加圆角 * @param bmpOriginal 原图 * @param pixels 圆角弧度 * @return 修改后的图片 */ public static Bitmap toGrayscale(Bitmap bmpOriginal, int pixels) { return toRoundCorner(toGrayscale(bmpOriginal), pixels); } /** * 把图片变成圆角 * @param bitmap 需要修改的图片 * @param pixels 圆角的弧度 * @return 圆角图片 */ public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); final float roundPx = pixels; paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return output; } /** * 使圆角功能支持BitampDrawable * @param bitmapDrawable * @param pixels * @return */ public static BitmapDrawable toRoundCorner(BitmapDrawable bitmapDrawable, int pixels) { Bitmap bitmap = bitmapDrawable.getBitmap(); bitmapDrawable = new BitmapDrawable(toRoundCorner(bitmap, pixels)); return bitmapDrawable; } }时间工具
public class TimeUtil { public static String converTime(long timestamp){ long currentSeconds = System.currentTimeMillis()/1000; long timeGap = currentSeconds-timestamp;//与现在时间相差秒数 String timeStr = null; if(timeGap>24*60*60){//1天以上 timeStr = timeGap/(24*60*60)+"天前"; }else if(timeGap>60*60){//1小时-24小时 timeStr = timeGap/(60*60)+"小时前"; }else if(timeGap>60){//1分钟-59分钟 timeStr = timeGap/60+"分钟前"; }else{//1秒钟-59秒钟 timeStr = "刚刚"; } return timeStr; } public static String getStandardTime(long timestamp){ SimpleDateFormat sdf = new SimpleDateFormat("MM月dd日 HH:mm"); Date date = new Date(timestamp*1000); sdf.format(date); return sdf.format(date); }}