me.echodev.resizer

Class Resizer

java.lang.Object

me.echodev.resizer.Resizer

public class Resizer
extends java.lang.Object

An image resizing library for Android, which allows you to scale an image file to a smaller or bigger one while keeping the aspect ratio.

Constructor Summary

Constructors

Constructor and Description
Resizer(android.content.Context context) The constructor to initialize Resizer instance.

Method Summary

Modifier and Type	Method and Description
android.graphics.Bitmap	getResizedBitmap() Get the resized image bitmap.
io.reactivex.Flowable<android.graphics.Bitmap>	getResizedBitmapAsFlowable() Get the resized image bitmap as RxJava Flowable.
java.io.File	getResizedFile() Get the resized image file.
io.reactivex.Flowable<java.io.File>	getResizedFileAsFlowable() Get the resized image file as RxJava Flowable.
Resizer	setOutputDirPath(java.lang.String outputDirPath) Set the output directory path.
Resizer	setOutputFilename(java.lang.String filename) Set the output file name.
Resizer	setOutputFormat(android.graphics.Bitmap.CompressFormat compressFormat) Set the image compression format by Bitmap.CompressFormat.
Resizer	setOutputFormat(java.lang.String outputFormat) Set the image compression format by String.
Resizer	setQuality(int quality) Set the image quality.
Resizer	setSourceImage(java.io.File sourceImage) Set the source image file.
Resizer	setTargetLength(int targetLength) Set the target length of the image.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Resizer

public Resizer(android.content.Context context)

The constructor to initialize Resizer instance.

Parameters:

context - The global application context. You can get it by getApplicationContext().

Method Detail

setTargetLength

public Resizer setTargetLength(int targetLength)

Set the target length of the image. You only need to specify the target length of the longer side (or either side if it's a square). Resizer will calculate the rest automatically.

Parameters:

targetLength - The target image length in pixel. The default value is 1080.

Returns:

This Resizer instance, for chained settings.

setQuality

public Resizer setQuality(int quality)

Set the image quality. The higher value, the better image quality but larger file size. PNG, which is a lossless format, will ignore the quality setting.

Parameters:

quality - The image quality value, ranges from 0 to 100. The default value is 80.

Returns:

This Resizer instance, for chained settings.

setOutputFormat

public Resizer setOutputFormat(java.lang.String outputFormat)

Set the image compression format by String.

Parameters:

outputFormat - The compression format. The default format is JPEG.

Returns:

This Resizer instance, for chained settings.

setOutputFormat

public Resizer setOutputFormat(android.graphics.Bitmap.CompressFormat compressFormat)

Set the image compression format by Bitmap.CompressFormat.

Parameters:

compressFormat - The compression format. The default format is JPEG.

Returns:

This Resizer instance, for chained settings.

setOutputFilename

public Resizer setOutputFilename(java.lang.String filename)

Set the output file name. If you don't set it, the output file will have the same name as the source file.

Parameters:

filename - The name of the output file, without file extension.

Returns:

This Resizer instance, for chained settings.

setOutputDirPath

public Resizer setOutputDirPath(java.lang.String outputDirPath)

Set the output directory path. If this is the same as where the source image locates, the source image can be overwritten.

Parameters:

outputDirPath - The path of the output directory. The default path is the external files directory of your app

Returns:

This Resizer instance, for chained settings.

setSourceImage

public Resizer setSourceImage(java.io.File sourceImage)

Set the source image file.

Parameters:

sourceImage - The source image file to be resized.

Returns:

This Resizer instance, for chained settings.

getResizedFile

public java.io.File getResizedFile()
                            throws java.io.IOException

Get the resized image file.

Returns:

The resized image file.

Throws:

java.io.IOException

getResizedBitmap

public android.graphics.Bitmap getResizedBitmap()
                                         throws java.io.IOException

Get the resized image bitmap.

Returns:

The resized image bitmap.

Throws:

java.io.IOException

getResizedFileAsFlowable

public io.reactivex.Flowable<java.io.File> getResizedFileAsFlowable()

Get the resized image file as RxJava Flowable.

Returns:

A Flowable that emits the resized image file or error.

getResizedBitmapAsFlowable

public io.reactivex.Flowable<android.graphics.Bitmap> getResizedBitmapAsFlowable()

Get the resized image bitmap as RxJava Flowable.

Returns:

A Flowable that emits the resized image bitmap or error.