Android Bitmap Scale getScalBitmap(Context context, Uri uri, int destW, int destH)

Description

get Scal Bitmap

Declaration

public static Bitmap getScalBitmap(Context context, Uri uri, int destW,
            int destH) 

Method Source Code

//package com.java2s;

import java.io.FileNotFoundException;

import java.io.IOException;
import java.io.InputStream;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import android.net.Uri;

public class Main {
    public static Bitmap getScalBitmap(String file, int destW, int destH) {
        if (file == null)
            return null;

        BitmapFactory.Options options = new BitmapFactory.Options();

        options.inJustDecodeBounds = true;
        Bitmap bm = BitmapFactory.decodeFile(file, options);
        options.inJustDecodeBounds = false;

        float blW = (float) options.outWidth / destW;
        float blH = (float) options.outHeight / destH;

        options.inSampleSize = 1;//from w  w  w.  j  a va 2 s. c  o m
        if (blW > 1 || blH > 1) {
            float bl = (blW > blH ? blW : blH);
            options.inSampleSize = (int) (bl + 0.9f);
        }
        try {
            bm = BitmapFactory.decodeFile(file, options);

        } catch (OutOfMemoryError e) {
            e.printStackTrace();
        }

        return bm;
    }

    public static Bitmap getScalBitmap(Context context, Uri uri, int destW,
            int destH) {
        if (uri == null)
            return null;

        InputStream in = null;
        try {
            in = context.getContentResolver().openInputStream(uri);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return null;
        }
        BitmapFactory.Options options = new BitmapFactory.Options();

        options.inJustDecodeBounds = true;
        Bitmap bm = BitmapFactory.decodeStream(in, null, options);
        options.inJustDecodeBounds = false;
        try {
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        float blW = (float) options.outWidth / destW;
        float blH = (float) options.outHeight / destH;

        options.inSampleSize = 1;
        if (blW > 1 || blH > 1) {
            float bl = (blW > blH ? blW : blH);
            options.inSampleSize = (int) (bl + 0.9f);
        }

        try {
            in = context.getContentResolver().openInputStream(uri);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return null;
        }
        bm = BitmapFactory.decodeStream(in, null, options);
        try {
            in.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return bm;
    }
}

Related

1. getScalBitmap(String file, int destW, int destH)
2. getScaledBitmap(Bitmap bitmap, int width, int height)
3. getScaledBitmapByHeight(Bitmap bm, int newHeight)
4. scaleBitmap(Bitmap bitmap, int dstWidth, int dstHeight)