create Bitmap Thumbnail by size - Android android.graphics

Android examples for android.graphics:Bitmap Thumbnail

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  4. Bitmap Thumbnail

Description

create Bitmap Thumbnail by size

Demo Code

import android.graphics.Bitmap;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.TransitionDrawable;
import android.lemon.assist.Base64;
import android.lemon.dct.FDCT;
import android.view.View;
import android.view.View;
import android.widget.ImageView;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

public class Main{

    public static Bitmap createBitmapThumbnail(Bitmap bitMap,
            boolean needRecycle, int newHeight, int newWidth) {
        int width = bitMap.getWidth();
        int height = bitMap.getHeight();

        float scaleWidth = ((float) newWidth) / width;
        float scaleHeight = ((float) newHeight) / height;

        Matrix matrix = new Matrix();
        matrix.postScale(scaleWidth, scaleHeight);

        Bitmap newBitMap = Bitmap.createBitmap(bitMap, 0, 0, width, height,
                matrix, true);/*from  ww w  . j  a va  2 s . co m*/
        if (needRecycle)
            bitMap.recycle();
        return newBitMap;
    }

}

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