Example usage for android.graphics BitmapFactory decodeStream

Introduction

In this page you can find the example usage for android.graphics BitmapFactory decodeStream.

Prototype

@Nullable
public static Bitmap decodeStream(@Nullable InputStream is, @Nullable Rect outPadding, @Nullable Options opts)

Source Link

Document

Decode an input stream into a bitmap.

Usage

From source file:Main.java

private static Bitmap getBitmap(Context paramContext, int paramInt) {
    BitmapFactory.Options localOptions = new BitmapFactory.Options();
    Bitmap.Config localConfig = Bitmap.Config.RGB_565;
    localOptions.inPreferredConfig = localConfig;
    return BitmapFactory.decodeStream(paramContext.getResources().openRawResource(paramInt), null,
            localOptions);// w  w  w.  jav  a 2  s. com
}

From source file:Main.java

public static Bitmap decodeFile(File f) {
    try {//from w w w .j  a  v a2s.c  om
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f), null, o);

        final int REQUIRED_SIZE = 70;
        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
            if (width_tmp / 2 < REQUIRED_SIZE || height_tmp / 2 < REQUIRED_SIZE)
                break;
            width_tmp /= 2;
            height_tmp /= 2;
            scale++;
        }

        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
    } catch (FileNotFoundException e) {
    }
    return null;
}

From source file:Main.java

public static Bitmap decodeImageFile(File f) {
    try {//from w w w .  j av  a2 s . c o m
        //Decode image size 
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f), null, o);

        //The new size we want to scale to
        final int REQUIRED_SIZE = 70;

        //Find the correct scale value. It should be the power of 2.
        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
            if (width_tmp / 2 < REQUIRED_SIZE || height_tmp / 2 < REQUIRED_SIZE)
                break;
            width_tmp /= 2;
            height_tmp /= 2;
            scale *= 2;
        }

        //Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
    } catch (FileNotFoundException e) {
    }
    return null;
}

From source file:Main.java

public static Bitmap decodeInputStream(InputStream is) {
    try {/*from   www  .  j  ava2 s  . c  om*/
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(is, null, options);
        options.inJustDecodeBounds = false;
        int be = (int) (options.outWidth / (float) ZEN_IMAGE_WIDTH);

        if (be <= 0) {
            be = 1;
        }

        options.inSampleSize = be;
        Bitmap bitmap = BitmapFactory.decodeStream(is, null, options);
        return bitmap;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static final Bitmap getBitmapFromRaw(Context context, int resId) {
    if (resId <= 0)
        return null;
    try {/* ww  w  .  j a v a2s. c  o m*/
        InputStream is = context.getResources().openRawResource(resId);
        BitmapFactory.Options imageOptions = new BitmapFactory.Options();
        Bitmap bmp = BitmapFactory.decodeStream(is, null, imageOptions);
        return bmp;
    } catch (Exception ex) {
        ex.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static Bitmap decodeSampledBitmapFromInputStream(InputStream stream, int reqWidth, int reqHeight) {

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;/* w  w w  .j av a2s. c  o  m*/
    options.inPurgeable = true;
    BitmapFactory.decodeStream(stream, null, options);

    if (options.outHeight > 0 && options.outWidth > 0) {
        // Calculate inSampleSize
        options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

        // Decode bitmap with inSampleSize set
        options.inJustDecodeBounds = false;
        return BitmapFactory.decodeStream(stream, null, options);
    } else {
        return null;
    }
}

From source file:Main.java

public static Bitmap decodeSampledBitmapFromResource(InputStream is, int reqWidth, int reqHeight) {

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;/*from   ww  w  .j av a  2s .  c om*/
    //BitmapFactory.decodeResource(res, resId, options);
    BitmapFactory.decodeStream(is, null, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    return BitmapFactory.decodeStream(is, null, options);
    //        return BitmapFactory.decodeResource(res, resId, options);
}

From source file:Main.java

public static Bitmap decodeFile(File f, int maxSize) {
    Bitmap b = null;//from   w w  w  .  j a  v a  2  s. c  o m
    try {
        //Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;

        FileInputStream fis = new FileInputStream(f);
        BitmapFactory.decodeStream(fis, null, o);
        fis.close();

        int scale = 1;
        if (o.outHeight > maxSize || o.outWidth > maxSize) {
            scale = (int) Math.pow(2, (int) Math
                    .round(Math.log(maxSize / (double) Math.max(o.outHeight, o.outWidth)) / Math.log(0.5)));
        }

        //Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        fis = new FileInputStream(f);
        b = BitmapFactory.decodeStream(fis, null, o2);
        fis.close();
    } catch (IOException e) {
    }
    return b;
}

From source file:Main.java

public static Bitmap generateBitmap(Context context, int resId, BitmapFactory.Options options) {

    options.inPreferredConfig = Bitmap.Config.RGB_565;
    options.inPurgeable = true;//from  w  ww  . j  a  v  a  2s.  c  o m
    options.inInputShareable = true;

    InputStream is = context.getResources().openRawResource(resId);

    return BitmapFactory.decodeStream(is, null, options);
}

From source file:Main.java

public static Bitmap revitionImageSize(String path) throws IOException {
    BufferedInputStream in = new BufferedInputStream(new FileInputStream(new File(path)));
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;//w  w w  .  j av a 2 s .c o  m
    BitmapFactory.decodeStream(in, null, options);
    in.close();
    int i = 0;
    Bitmap bitmap = null;
    while (true) {
        if ((options.outWidth >> i <= 1000) && (options.outHeight >> i <= 1000)) {
            in = new BufferedInputStream(new FileInputStream(new File(path)));
            options.inSampleSize = (int) Math.pow(2.0D, i);
            options.inJustDecodeBounds = false;
            bitmap = BitmapFactory.decodeStream(in, null, options);
            break;
        }
        i += 1;
    }
    return bitmap;
}