示例#1
0
  /** 压缩图片 */
  public static Bitmap compressImageFromFile(String srcPath) {
    Options newOpts = new Options();
    newOpts.inJustDecodeBounds = true; // 只读边,不读内容
    Bitmap bitmap = BitmapFactory.decodeFile(srcPath, newOpts);

    newOpts.inJustDecodeBounds = false;
    int w = newOpts.outWidth;
    int h = newOpts.outHeight;
    float hh = 800f; //
    float ww = 480f; //
    int be = 1;
    if (w > h && w > ww) {
      be = (int) (newOpts.outWidth / ww);
    } else if (w < h && h > hh) {
      be = (int) (newOpts.outHeight / hh);
    }
    if (be <= 0) be = 1;
    newOpts.inSampleSize = be; // 设置采样率

    newOpts.inPreferredConfig = Config.ARGB_8888; // 该模式是默认的,可不设
    newOpts.inPurgeable = true; // 同时设置才会有效
    newOpts.inInputShareable = true; // 当系统内存不够时候图片自动被回收

    bitmap = BitmapFactory.decodeFile(srcPath, newOpts);
    // return compressBmpFromBmp(bitmap);//原来的方法调用了这个方法企图进行二次压缩
    // 其实是无效的,大家尽管尝试
    return bitmap;
  }
示例#2
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 private void copyOptions(Options srcOptions, Options destOptions) {
   destOptions.inDensity = srcOptions.inDensity;
   destOptions.inDither = srcOptions.inDither;
   destOptions.inInputShareable = srcOptions.inInputShareable;
   destOptions.inJustDecodeBounds = srcOptions.inJustDecodeBounds;
   destOptions.inPreferredConfig = srcOptions.inPreferredConfig;
   destOptions.inPurgeable = srcOptions.inPurgeable;
   destOptions.inSampleSize = srcOptions.inSampleSize;
   destOptions.inScaled = srcOptions.inScaled;
   destOptions.inScreenDensity = srcOptions.inScreenDensity;
   destOptions.inTargetDensity = srcOptions.inTargetDensity;
   destOptions.inTempStorage = srcOptions.inTempStorage;
   if (Build.VERSION.SDK_INT >= 10) copyOptions10(srcOptions, destOptions);
   if (Build.VERSION.SDK_INT >= 11) copyOptions11(srcOptions, destOptions);
 }
示例#3
0
 public Bitmap loadCachedResource(CachedResource resource) {
   try {
     Options options = new Options();
     options.inPurgeable = true;
     options.inInputShareable = true;
     return BitmapFactory.decodeStream(
         new FlushedInputStream(new FileInputStream(new File(resource.getPath()))));
   } catch (Exception e) {
     if (resource != null) {
       Log.e("MyTag", "Error decoding image : " + resource.getPath(), e);
     }
     System.gc();
     return null;
   }
 }
 public Builder() {
   decodingOptions.inPurgeable = true;
   decodingOptions.inInputShareable = true;
 }