Android Open Source - SimpleReader Image Utils

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License

The source code is released under:

Apache License

Java Source Code

package com.dreamteam.app.utils;
//from  w ww . j  ava2  s . c om
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.Matrix;

import com.dreamteam.app.commons.AppConfig;

/**
 * @author zcloud
 * @date 2013/11/13
 */
public class ImageUtils {
  public static final CompressFormat mCompressForamat = CompressFormat.JPEG;
  public static final int mQuality = 70;

  public static Bitmap zoomBitmap(Bitmap bitmap, int w, int h) {
    Bitmap newBitmap = null;
    if (bitmap != null) {
      int width = bitmap.getWidth();
      int height = bitmap.getHeight();

      float scaleWidth = ((float) w / width);
      float scaleHeight = ((float) h / height);
      Matrix matrix = new Matrix();
      matrix.postScale(scaleWidth, scaleHeight);
      newBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height,
          matrix, true);
    }
    return newBitmap;
  }

  public static void saveImageToSD(InputStream is, String path,
      String fileName) {
    FileUtils.saveToFile(is, path, fileName);
  }

  public static void saveImageToSD(Bitmap bmp, String url) {
    try {
      File file = FileUtils.newAbsoluteFile(AppConfig.APP_IMAGE_CACHE_DIR
          + File.separator + MD5.Md5(url));
      FileOutputStream fos = new FileOutputStream(file);
      bmp.compress(mCompressForamat, mQuality, fos);
    } catch (IOException e1) {
      e1.printStackTrace();
    }

  }

  public static int dip2px(Context context, float dpValue) {
    final float scale = context.getResources().getDisplayMetrics().density;
    return (int) (dpValue * scale + 0.5f);
  }

  public static int px2dip(Context context, float pxValue) {
    final float scale = context.getResources().getDisplayMetrics().density;
    return (int) (pxValue / scale + 0.5f);
  }
}

Java Source Code List

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