zxing图片拉近，微信扫码效果

zxing实现图片拉近并扫码效果，类似微信扫码。代码可运行

package com.alvin.commonlibrary;

import android.content.Context;
import android.support.test.InstrumentationRegistry;
import android.support.test.runner.AndroidJUnit4;

import org.junit.Test;
import org.junit.runner.RunWith;

import static org.junit.Assert.*;

/**
 * Instrumented test which will execute on an Android device.
 *
 * @see Testing documentation
 */
@RunWith（AndroidJUnit4.class）
public class ExampleInstrumentedTest {
    @Test
    public void useAppContext（） throws Exception {
        // Context of the app under test.
        Context appContext = InstrumentationRegistry.getTargetContext（）;

        assertEquals（“com.alvin.commonlibrary“ appContext.getPackageName（））;
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-03-04 06:53  CommonLibrary-master\
     文件         716  2019-03-04 06:53  CommonLibrary-master\.gitignore
     文件        1670  2019-03-04 06:53  CommonLibrary-master\README.md
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\
     文件           7  2019-03-04 06:53  CommonLibrary-master\app\.gitignore
     文件         897  2019-03-04 06:53  CommonLibrary-master\app\build.gradle
     文件         751  2019-03-04 06:53  CommonLibrary-master\app\proguard-rules.pro
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\androidTest\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\androidTest\java\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\androidTest\java\com\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\androidTest\java\com\alvin\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\androidTest\java\com\alvin\commonlibrary\
     文件         747  2019-03-04 06:53  CommonLibrary-master\app\src\androidTest\java\com\alvin\commonlibrary\ExampleInstrumentedTest.java
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\
     文件         717  2019-03-04 06:53  CommonLibrary-master\app\src\main\AndroidManifest.xml
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\java\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\java\com\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\java\com\alvin\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\java\com\alvin\commonlibrary\
     文件        1033  2019-03-04 06:53  CommonLibrary-master\app\src\main\java\com\alvin\commonlibrary\MainActivity.java
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\drawable-v24\
     文件        1880  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\drawable-v24\ic_launcher_foreground.xml
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\drawable\
     文件        5606  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\drawable\ic_launcher_background.xml
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\layout\
     文件         673  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\layout\activity_main.xml
     目录           0  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\mipmap-anydpi-v26\
     文件         272  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\mipmap-anydpi-v26\ic_launcher.xml
     文件         272  2019-03-04 06:53  CommonLibrary-master\app\src\main\res\mipmap-anydpi-v26\ic_launcher_round.xml
............此处省略371个文件信息