给图片加上圆角效果好看多了。



加圆角，Drawable，Bitmap,BitmapDrawable,字节数组之间的相互转换。

Java代码
  1. publicclassImageUtil{
  3. publicstaticInputStreamgetRequest(Stringpath)throwsException{
  4. URLurl=newURL(path);
  5. HttpURLConnectionconn=(HttpURLConnection)url.openConnection();
  6. conn.setRequestMethod("GET");
  7. conn.setConnectTimeout(5000);
  8. if(conn.getResponseCode()==200){
  9. returnconn.getInputStream();
  10. }
  11. returnnull;
  12. }
  14. publicstaticbyte[]readInputStream(InputStreaminStream)throwsException{
  15. ByteArrayOutputStreamoutSteam=newByteArrayOutputStream();
  16. byte[]buffer=newbyte[4096];
  17. intlen=0;
  18. while((len=inStream.read(buffer))!=-1){
  19. outSteam.write(buffer,0,len);
  20. }
  21. outSteam.close();
  22. inStream.close();
  23. returnoutSteam.toByteArray();
  24. }
  26. publicstaticDrawableloadImageFromUrl(Stringurl){
  27. URLm;
  28. InputStreami=null;
  29. try{
  30. m=newURL(url);
  31. i=(InputStream)m.getContent();
  32. }catch(MalformedURLExceptione1){
  33. e1.printStackTrace();
  34. }catch(IOExceptione){
  35. e.printStackTrace();
  36. }
  37. Drawabled=Drawable.createFromStream(i,"src");
  38. returnd;
  39. }
  41. publicstaticDrawablegetDrawableFromUrl(Stringurl)throwsException{
  42. returnDrawable.createFromStream(getRequest(url),null);
  43. }
  45. publicstaticBitmapgetBitmapFromUrl(Stringurl)throwsException{
  46. byte[]bytes=getBytesFromUrl(url);
  47. returnbyteToBitmap(bytes);
  48. }
  50. publicstaticBitmapgetRoundBitmapFromUrl(Stringurl,intpixels)throwsException{
  51. byte[]bytes=getBytesFromUrl(url);
  52. Bitmapbitmap=byteToBitmap(bytes);
  53. returntoRoundCorner(bitmap,pixels);
  54. }
  56. publicstaticDrawablegeRoundDrawableFromUrl(Stringurl,intpixels)throwsException{
  57. byte[]bytes=getBytesFromUrl(url);
  58. BitmapDrawablebitmapDrawable=(BitmapDrawable)byteToDrawable(bytes);
  59. returntoRoundCorner(bitmapDrawable,pixels);
  60. }
  62. publicstaticbyte[]getBytesFromUrl(Stringurl)throwsException{
  63. returnreadInputStream(getRequest(url));
  64. }
  66. publicstaticBitmapbyteToBitmap(byte[]byteArray){
  67. if(byteArray.length!=0){
  68. returnBitmapFactory.decodeByteArray(byteArray,0,byteArray.length);
  69. }
  70. else{
  71. returnnull;
  72. }
  73. }
  75. publicstaticDrawablebyteToDrawable(byte[]byteArray){
  76. ByteArrayInputStreamins=newByteArrayInputStream(byteArray);
  77. returnDrawable.createFromStream(ins,null);
  78. }
  80. publicstaticbyte[]Bitmap2Bytes(Bitmapbm){
  81. ByteArrayOutputStreambaos=newByteArrayOutputStream();
  82. bm.compress(Bitmap.CompressFormat.PNG,100,baos);
  83. returnbaos.toByteArray();
  84. }
  86. publicstaticBitmapdrawableToBitmap(Drawabledrawable){
  88. Bitmapbitmap=Bitmap
  89. .createBitmap(
  90. drawable.getIntrinsicWidth(),
  91. drawable.getIntrinsicHeight(),
  92. drawable.getOpacity()!=PixelFormat.OPAQUE?Bitmap.Config.ARGB_8888
  93. :Bitmap.Config.RGB_565);
  94. Canvascanvas=newCanvas(bitmap);
  95. drawable.setBounds(0,0,drawable.getIntrinsicWidth(),
  96. drawable.getIntrinsicHeight());
  97. drawable.draw(canvas);
  98. returnbitmap;
  99. }
  101. /**
  102. *图片去色,返回灰度图片
  103. *@parambmpOriginal传入的图片
  104. *@return去色后的图片
  105. */
  106. publicstaticBitmaptoGrayscale(BitmapbmpOriginal){
  107. intwidth,height;
  108. height=bmpOriginal.getHeight();
  109. width=bmpOriginal.getWidth();
  111. BitmapbmpGrayscale=Bitmap.createBitmap(width,height,Bitmap.Config.RGB_565);
  112. Canvasc=newCanvas(bmpGrayscale);
  113. Paintpaint=newPaint();
  114. ColorMatrixcm=newColorMatrix();
  115. cm.setSaturation(0);
  116. ColorMatrixColorFilterf=newColorMatrixColorFilter(cm);
  117. paint.setColorFilter(f);
  118. c.drawBitmap(bmpOriginal,0,0,paint);
  119. returnbmpGrayscale;
  120. }
  123. /**
  124. *去色同时加圆角
  125. *@parambmpOriginal原图
  126. *@parampixels圆角弧度
  127. *@return修改后的图片
  128. */
  129. publicstaticBitmaptoGrayscale(BitmapbmpOriginal,intpixels){
  130. returntoRoundCorner(toGrayscale(bmpOriginal),pixels);
  131. }
  133. /**
  134. *把图片变成圆角
  135. *@parambitmap需要修改的图片
  136. *@parampixels圆角的弧度
  137. *@return圆角图片
  138. */
  139. publicstaticBitmaptoRoundCorner(Bitmapbitmap,intpixels){
  141. Bitmapoutput=Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(),Config.ARGB_8888);
  142. Canvascanvas=newCanvas(output);
  144. finalintcolor=0xff424242;
  145. finalPaintpaint=newPaint();
  146. finalRectrect=newRect(0,0,bitmap.getWidth(),bitmap.getHeight());
  147. finalRectFrectF=newRectF(rect);
  148. finalfloatroundPx=pixels;
  150. paint.setAntiAlias(true);
  151. canvas.drawARGB(0,0,0,0);
  152. paint.setColor(color);
  153. canvas.drawRoundRect(rectF,roundPx,roundPx,paint);
  155. paint.setXfermode(newPorterDuffXfermode(Mode.SRC_IN));
  156. canvas.drawBitmap(bitmap,rect,rect,paint);
  158. returnoutput;
  159. }
  162. /**
  163. *使圆角功能支持BitampDrawable
  164. *@parambitmapDrawable
  165. *@parampixels
  166. *@return
  167. */
  168. publicstaticBitmapDrawabletoRoundCorner(BitmapDrawablebitmapDrawable,intpixels){
  169. Bitmapbitmap=bitmapDrawable.getBitmap();
  170. bitmapDrawable=newBitmapDrawable(toRoundCorner(bitmap,pixels));
  171. returnbitmapDrawable;
  172. }
  174. }
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;    }}



时间类:

Java代码
  1. publicclassTimeUtil{
  3. publicstaticStringconverTime(longtimestamp){
  4. longcurrentSeconds=System.currentTimeMillis()/1000;
  5. longtimeGap=currentSeconds-timestamp;//与现在时间相差秒数
  6. StringtimeStr=null;
  7. if(timeGap>24*60*60){//1天以上
  8. timeStr=timeGap/(24*60*60)+"天前";
  9. }elseif(timeGap>60*60){//1小时-24小时
  10. timeStr=timeGap/(60*60)+"小时前";
  11. }elseif(timeGap>60){//1分钟-59分钟
  12. timeStr=timeGap/60+"分钟前";
  13. }else{//1秒钟-59秒钟
  14. timeStr="刚刚";
  15. }
  16. returntimeStr;
  17. }
  19. publicstaticStringgetStandardTime(longtimestamp){
  20. SimpleDateFormatsdf=newSimpleDateFormat("MM月dd日HH:mm");
  21. Datedate=newDate(timestamp*1000);
  22. sdf.format(date);
  23. returnsdf.format(date);
  24. }
  25. }

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