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(转摘)Android腾讯微薄客户端开发七:图片加圆角以及时间处理工具类

 
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给图片加上圆角效果好看多了。



Java代码 复制代码 收藏代码
  1. public class ImageUtil {   
  2.   
  3.     public static InputStream getRequest(String path) throws Exception {   
  4.         URL url = new URL(path);   
  5.         HttpURLConnection conn = (HttpURLConnection) url.openConnection();   
  6.         conn.setRequestMethod("GET");   
  7.         conn.setConnectTimeout(5000);   
  8.         if (conn.getResponseCode() == 200){   
  9.             return conn.getInputStream();   
  10.         }   
  11.         return null;   
  12.     }   
  13.   
  14.     public static byte[] readInputStream(InputStream inStream) throws Exception {   
  15.         ByteArrayOutputStream outSteam = new ByteArrayOutputStream();   
  16.         byte[] buffer = new byte[4096];   
  17.         int len = 0;   
  18.         while ((len = inStream.read(buffer)) != -1) {   
  19.             outSteam.write(buffer, 0, len);   
  20.         }   
  21.         outSteam.close();   
  22.         inStream.close();   
  23.         return outSteam.toByteArray();   
  24.     }   
  25.        
  26.     public static Drawable loadImageFromUrl(String url){   
  27.         URL m;   
  28.         InputStream i = null;   
  29.         try {   
  30.             m = new URL(url);   
  31.             i = (InputStream) m.getContent();   
  32.         } catch (MalformedURLException e1) {   
  33.             e1.printStackTrace();   
  34.         } catch (IOException e) {   
  35.             e.printStackTrace();   
  36.         }   
  37.         Drawable d = Drawable.createFromStream(i, "src");   
  38.         return d;   
  39.     }   
  40.        
  41.     public static Drawable getDrawableFromUrl(String url) throws Exception{   
  42.          return Drawable.createFromStream(getRequest(url),null);   
  43.     }   
  44.        
  45.     public static Bitmap getBitmapFromUrl(String url) throws Exception{   
  46.         byte[] bytes = getBytesFromUrl(url);   
  47.         return byteToBitmap(bytes);   
  48.     }   
  49.        
  50.     public static Bitmap getRoundBitmapFromUrl(String url,int pixels) throws Exception{   
  51.         byte[] bytes = getBytesFromUrl(url);   
  52.         Bitmap bitmap = byteToBitmap(bytes);   
  53.         return toRoundCorner(bitmap, pixels);   
  54.     }    
  55.        
  56.     public static Drawable geRoundDrawableFromUrl(String url,int pixels) throws Exception{   
  57.         byte[] bytes = getBytesFromUrl(url);   
  58.         BitmapDrawable bitmapDrawable = (BitmapDrawable)byteToDrawable(bytes);   
  59.         return toRoundCorner(bitmapDrawable, pixels);   
  60.     }    
  61.        
  62.     public static byte[] getBytesFromUrl(String url) throws Exception{   
  63.          return readInputStream(getRequest(url));   
  64.     }   
  65.        
  66.     public static Bitmap byteToBitmap(byte[] byteArray){   
  67.         if(byteArray.length!=0){    
  68.             return BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);    
  69.         }    
  70.         else {    
  71.             return null;    
  72.         }     
  73.     }   
  74.        
  75.     public static Drawable byteToDrawable(byte[] byteArray){   
  76.         ByteArrayInputStream ins = new ByteArrayInputStream(byteArray);   
  77.         return Drawable.createFromStream(ins, null);   
  78.     }   
  79.        
  80.     public static byte[] Bitmap2Bytes(Bitmap bm){    
  81.         ByteArrayOutputStream baos = new ByteArrayOutputStream();   
  82.         bm.compress(Bitmap.CompressFormat.PNG, 100, baos);   
  83.         return baos.toByteArray();   
  84.     }   
  85.        
  86.     public static Bitmap drawableToBitmap(Drawable drawable) {   
  87.   
  88.         Bitmap bitmap = Bitmap   
  89.                 .createBitmap(   
  90.                         drawable.getIntrinsicWidth(),   
  91.                         drawable.getIntrinsicHeight(),   
  92.                         drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888   
  93.                                 : Bitmap.Config.RGB_565);   
  94.         Canvas canvas = new Canvas(bitmap);   
  95.         drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),   
  96.                 drawable.getIntrinsicHeight());   
  97.         drawable.draw(canvas);   
  98.         return bitmap;   
  99.     }   
  100.        
  101.         /**  
  102.           * 图片去色,返回灰度图片  
  103.           * @param bmpOriginal 传入的图片  
  104.          * @return 去色后的图片  
  105.          */  
  106.         public static Bitmap toGrayscale(Bitmap bmpOriginal) {   
  107.             int width, height;   
  108.             height = bmpOriginal.getHeight();   
  109.             width = bmpOriginal.getWidth();       
  110.        
  111.             Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);   
  112.             Canvas c = new Canvas(bmpGrayscale);   
  113.             Paint paint = new Paint();   
  114.             ColorMatrix cm = new ColorMatrix();   
  115.             cm.setSaturation(0);   
  116.             ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);   
  117.             paint.setColorFilter(f);   
  118.             c.drawBitmap(bmpOriginal, 0, 0, paint);   
  119.             return bmpGrayscale;   
  120.         }   
  121.            
  122.            
  123.         /**  
  124.          * 去色同时加圆角  
  125.          * @param bmpOriginal 原图  
  126.          * @param pixels 圆角弧度  
  127.          * @return 修改后的图片  
  128.          */  
  129.         public static Bitmap toGrayscale(Bitmap bmpOriginal, int pixels) {   
  130.             return toRoundCorner(toGrayscale(bmpOriginal), pixels);   
  131.         }   
  132.            
  133.         /**  
  134.          * 把图片变成圆角  
  135.          * @param bitmap 需要修改的图片  
  136.          * @param pixels 圆角的弧度  
  137.          * @return 圆角图片  
  138.          */  
  139.         public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) {   
  140.        
  141.             Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);   
  142.             Canvas canvas = new Canvas(output);   
  143.        
  144.             final int color = 0xff424242;   
  145.             final Paint paint = new Paint();   
  146.             final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());   
  147.             final RectF rectF = new RectF(rect);   
  148.             final float roundPx = pixels;   
  149.        
  150.             paint.setAntiAlias(true);   
  151.             canvas.drawARGB(0, 0, 0, 0);   
  152.             paint.setColor(color);   
  153.             canvas.drawRoundRect(rectF, roundPx, roundPx, paint);   
  154.        
  155.             paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));   
  156.             canvas.drawBitmap(bitmap, rect, rect, paint);   
  157.        
  158.             return output;   
  159.         }   
  160.        
  161.            
  162.        /**  
  163.          * 使圆角功能支持BitampDrawable  
  164.          * @param bitmapDrawable   
  165.          * @param pixels   
  166.          * @return  
  167.          */  
  168.         public static BitmapDrawable toRoundCorner(BitmapDrawable bitmapDrawable, int pixels) {   
  169.             Bitmap bitmap = bitmapDrawable.getBitmap();   
  170.             bitmapDrawable = new BitmapDrawable(toRoundCorner(bitmap, pixels));   
  171.             return bitmapDrawable;   
  172.         }   
  173.        
  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;
	    }
	
}


Java代码 复制代码 收藏代码
  1. public class TimeUtil {   
  2.        
  3.     public static String converTime(long timestamp){   
  4.         long currentSeconds = System.currentTimeMillis()/1000;   
  5.         long timeGap = currentSeconds-timestamp;//与现在时间相差秒数   
  6.         String timeStr = null;   
  7.         if(timeGap>24*60*60){//1天以上   
  8.             timeStr = timeGap/(24*60*60)+"天前";   
  9.         }else if(timeGap>60*60){//1小时-24小时   
  10.             timeStr = timeGap/(60*60)+"小时前";   
  11.         }else if(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.         return timeStr;   
  17.     }   
  18.        
  19.     public static String getStandardTime(long timestamp){   
  20.         SimpleDateFormat sdf = new SimpleDateFormat("MM月dd日 HH:mm");   
  21.         Date date = new Date(timestamp*1000);   
  22.         sdf.format(date);   
  23.         return sdf.format(date);   
  24.     }   
  25. }  
    26. http://helloandroid.iteye.com/blog/1136297
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