Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import android.content.Context;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import android.util.DisplayMetrics;
import android.view.WindowManager;

public class Main {
    /**
     * Resamples the captured photo to fit the screen for better memory usage.
     *
     * @param context   The application context.
     * @param imagePath The path of the photo to be resampled.
     * @return The resampled bitmap
     */
    static Bitmap resamplePic(Context context, String imagePath) {

        // Get device screen size information
        DisplayMetrics metrics = new DisplayMetrics();
        WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        manager.getDefaultDisplay().getMetrics(metrics);

        int targetH = metrics.heightPixels;
        int targetW = metrics.widthPixels;

        // Get the dimensions of the original bitmap
        BitmapFactory.Options bmOptions = new BitmapFactory.Options();
        bmOptions.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(imagePath, bmOptions);
        int photoW = bmOptions.outWidth;
        int photoH = bmOptions.outHeight;

        // Determine how much to scale down the image
        int scaleFactor = Math.min(photoW / targetW, photoH / targetH);

        // Decode the image file into a Bitmap sized to fill the View
        bmOptions.inJustDecodeBounds = false;
        bmOptions.inSampleSize = scaleFactor;

        return BitmapFactory.decodeFile(imagePath);
    }
}