【Android -- 开源库】Matisse 的基本使用

一、效果图

二、简介

图片选择框架 Matisse 的使用，实现图片的选择及使用相机进行拍摄，最后将选择或拍摄的照片显示在 activity 中。

三、实战

1. 添加依赖

• 根目录 build.gradle 添加

allprojects {
    repositories {
        google()
        mavenCentral()
        maven { url "https://jitpack.io"}
        jcenter()
    }
}

• app 目录 build.gradle 添加

    implementation 'com.zhihu.android:matisse:0.5.2-beta4'
    // glide
    implementation 'com.github.bumptech.glide:glide:4.9.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'

    implementation 'com.tbruyelle.rxpermissions2:rxpermissions:+'

2. AndroidManifest.xml 文件

3. filepaths.xml 文件

4. GlideLoadEngine.java

/**
 * Created on 2021/7/20 18:46
 *
 * @author Gong Youqiang
 */
public class GlideLoadEngine implements ImageEngine {
    /**
     * Load thumbnail of a static image resource.
     *
     * @param context     Context
     * @param resize      Desired size of the origin image
     * @param placeholder Placeholder drawable when image is not loaded yet
     * @param imageView   ImageView widget
     * @param uri         Uri of the loaded image
     */
    @Override
    public void loadThumbnail(Context context, int resize, Drawable placeholder, ImageView imageView, Uri uri) {
        Glide.with(context)
                .asBitmap() // some .jpeg files are actually gif
                .load(uri)
                .apply(new RequestOptions()
                        .override(resize, resize)
                        .placeholder(placeholder)
                        .centerCrop())
                .into(imageView);
    }

    @Override
    public void loadGifThumbnail(Context context, int resize, Drawable placeholder, ImageView imageView,
                                 Uri uri) {
        Glide.with(context)
                .asBitmap() // some .jpeg files are actually gif
                .load(uri)
                .apply(new RequestOptions()
                        .override(resize, resize)
                        .placeholder(placeholder)
                        .centerCrop())
                .into(imageView);
    }

    @Override
    public void loadImage(Context context, int resizeX, int resizeY, ImageView imageView, Uri uri) {
        Glide.with(context)
                .load(uri)
                .apply(new RequestOptions()
                        .override(resizeX, resizeY)
                        .priority(Priority.HIGH)
                        .fitCenter())
                .into(imageView);
    }

    @Override
    public void loadGifImage(Context context, int resizeX, int resizeY, ImageView imageView, Uri uri) {
        Glide.with(context)
                .asGif()
                .load(uri)
                .apply(new RequestOptions()
                        .override(resizeX, resizeY)
                        .priority(Priority.HIGH)
                        .fitCenter())
                .into(imageView);
    }

    @Override
    public boolean supportAnimatedGif() {
        return true;
    }
}

5. 逻辑代码

public class MainActivity extends BaseActivity {
    private final int REQUEST_CODE_CHOOSE_PHOTO_ALBUM = 1;

    private static final String[] permissionsGroup = new String[]{
            Manifest.permission.CAMERA
            ,Manifest.permission.WRITE_EXTERNAL_STORAGE
            ,Manifest.permission.READ_EXTERNAL_STORAGE};

    @BindView(R.id.iv_photo)
    ImageView mImageView;


    @Override
    public int getLayoutId() {
        return R.layout.activity_main;
    }

    @Override
    public void initView() {
        initPermission();
    }

    @OnClick(R.id.btn_select_pic)
    public void click() {
        selectPic();
    }

    @SuppressLint("MissingSuperCall")
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        if (requestCode == REQUEST_CODE_CHOOSE_PHOTO_ALBUM && resultCode == RESULT_OK)
        {
            //图片路径 同样视频地址也是这个 根据requestCode
            List pathList = Matisse.obtainResult(data);
            for (Uri _Uri : pathList) {
                Glide.with(this).load(_Uri).into(mImageView);
                System.out.println(_Uri.getPath());
            }
        }
    }

    private void selectPic() {
        Matisse.from(this)
                .choose(MimeType.ofImage(), false)
                .capture(true)  // 使用相机，和 captureStrategy 一起使用
                .captureStrategy(new CaptureStrategy(true, "com.hk.matisseactivity"))
//        R.style.Matisse_Zhihu (light mode)
//        R.style.Matisse_Dracula (dark mode)
                .theme(R.style.Matisse_Dracula)
                .countable(true)
                .maxSelectable(1)
                .addFilter(new Filter() {
                    @Override
                    protected Set constraintTypes() {
                        return new HashSet() {{
                            add(MimeType.PNG);
                        }};
                    }

                    @Override
                    public IncapableCause filter(Context context, Item item) {
                        try {
                            InputStream inputStream = getContentResolver().openInputStream(item.getContentUri());
                            BitmapFactory.Options options = new BitmapFactory.Options();
                            options.inJustDecodeBounds = true;
                            BitmapFactory.decodeStream(inputStream, null, options);
                            int width = options.outWidth;
                            int height = options.outHeight;

//                            if (width >= 500)
//                                return new IncapableCause("宽度超过500px");

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


                        return null;
                    }
                })
//                .gridExpectedSize((int) getResources().getDimension(R.dimen.imageSelectDimen))
                .restrictOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT)
                .thumbnailScale(0.87f)
                .imageEngine(new GlideLoadEngine())
                .forResult(REQUEST_CODE_CHOOSE_PHOTO_ALBUM);
    }

    private void initPermission(){
        new RxPermissions(this)
                .request(permissionsGroup)
                .subscribe(new Observer() {
                    @Override
                    public void onSubscribe( Disposable d) {

                    }

                    @Override
                    public void onNext(Boolean aBoolean) {
                        Log.d("amy", "onNext: "+aBoolean);
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });
    }
}