Easy-to-use library to select images in Android application

Features:

• select images by folders
• support to set max number of images to be selected
• allow filter images with tiny size (configurable)
• fast scroll of image list
• support to capture images from camera
• compitable with android 6.0
• support Chinese / English

NOTE: this library depends on Fresco / rxjava.

How does it work (GIF)

Download demo apk here: demo

How to use this library in your application

1. add "multiple-images-selector" dependency

multiple-images-selector is now available in jcenter.

Add "multiple-images-selector" as dependency to your app:

compile 'com.zfdang.multiple-images-selector:multiple-images-selector:1.1.5'

2. Initialize Fresco & Add selector activity in your app's manifest

Permission & Application & Activity:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<!--the following two permissions are required if you want to take photo in selector-->
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<application
     ...
    android:name=".DemoApplication"
    ...

    <activity
        android:name="com.zfdang.multiple_images_selector.ImagesSelectorActivity"
        android:configChanges="orientation|screenSize"/>

</application>

Application intialization:

public class DemoApplication extends Application
{
    @Override
    public void onCreate() {
    super.onCreate();

    // the following line is important
    Fresco.initialize(getApplicationContext());
    }
}

3. Launch images selector:

// class variables
private static final int REQUEST_CODE = 123;
private ArrayList<String> mResults = new ArrayList<>();

// start multiple photos selector
Intent intent = new Intent(DemoActivity.this, ImagesSelectorActivity.class);
// max number of images to be selected
intent.putExtra(SelectorSettings.SELECTOR_MAX_IMAGE_NUMBER, 5);
// min size of image which will be shown; to filter tiny images (mainly icons)
intent.putExtra(SelectorSettings.SELECTOR_MIN_IMAGE_SIZE, 100000);
// show camera or not
intent.putExtra(SelectorSettings.SELECTOR_SHOW_CAMERA, true);
// pass current selected images as the initial value
intent.putStringArrayListExtra(SelectorSettings.SELECTOR_INITIAL_SELECTED_LIST, mResults);
// start the selector
startActivityForResult(intent, REQUEST_CODE);

4. get results by

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // get selected images from selector
    if(requestCode == REQUEST_CODE) {
        if(resultCode == RESULT_OK) {
            mResults = data.getStringArrayListExtra(SelectorSettings.SELECTOR_RESULTS);
            assert mResults != null;

            // show results in textview
            StringBuffer sb = new StringBuffer();
            sb.append(String.format("Totally %d images selected:", mResults.size())).append("\n");
            for(String result : mResults) {
                sb.append(result).append("\n");
            }
            tvResults.setText(sb.toString());
        }
    }
    super.onActivityResult(requestCode, resultCode, data);
}

5. Q&A:

Issue 1:

android.view.InflateException: Binary XML file line #7: Binary XML file line #7: Error inflating class com.facebook.drawee.view.SimpleDraweeView

Solution: make sure Fresco is initialized in app properly.

android:name=".DemoApplication"
...
Fresco.initialize(getApplicationContext());

Issue 2:

App crash while loading large amount of images

Solution: disable hardware acceleration for activity

<activity
    android:name="com.zfdang.multiple_images_selector.ImagesSelectorActivity"
    android:hardwareAccelerated="false"
    android:configChanges="orientation|screenSize"/>

License

Multiple-Images-Selector is MIT-licensed.