Android RecyclerView头布局 Glide加载圆形头像 GreenDao创建

一、自定义圆形图片：

注意：Glide 依赖版本为4.0.0

Acticity：

Glide.with(this.getApplicationContext())
                .load(iconurl)
                .apply(new RequestOptions()
                        .centerCrop()
                        .priority(Priority.HIGH)
                        .error(R.mipmap.ic_launcher_round)
                        .placeholder(R.mipmap.ic_launcher)
                        .transform(new Formation()))
                .into(homeLeft_image);

Class：

新建一个类：

public class Formation extends BitmapTransformation {
    @Override
    protected Bitmap transform(@NonNull BitmapPool pool, @NonNull Bitmap toTransform, int outWidth, int outHeight) {
        if (toTransform == null) {
            return null;
        }
        int width = toTransform.getWidth();
        int height = toTransform.getHeight();
        int min = Math.min(width, height);
        int x = (width - min) / 2;
        int y = (height - min) / 2;


        Bitmap bitmap = Bitmap.createBitmap(min, min, Bitmap.Config.ARGB_8888);


        Canvas canvas = new Canvas(bitmap);


        Bitmap bitmap1 = Bitmap.createBitmap(toTransform, x, y, min, min);
        Paint paint = new Paint();
        paint.setShader(new BitmapShader(bitmap1, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
        int r = min / 2;
        canvas.drawCircle(r, r, r, paint);
        return bitmap;
    }


    @Override
    public void updateDiskCacheKey(MessageDigest messageDigest) {


    }
}

二、

Recyclerview头布局：

注意：先设置好适配器再添加头布局，不然报错。

1.添加recyclerviewheader依赖

2.attachTo(recy)

三、

GreenDao创建：

public class DaoMannger {    private static  DaoMannger daoMannger;    private DaoMaster.DevOpenHelper helper;    private final String DB_NAME="shoping";    private  DaoMannger(Context context){        helper=new DaoMaster.DevOpenHelper(context,DB_NAME);    }    public static synchronized DaoMannger getIntance(Context context){        if (daoMannger==null)            daoMannger=new DaoMannger(context);        return daoMannger;    }    public DaoBeanDao getDao(){        DaoMaster daoMaster = new DaoMaster(helper.getWritableDatabase());        DaoSession daoSession = daoMaster.newSession();        DaoBeanDao daoBeanDao = daoSession.getDaoBeanDao();        return  daoBeanDao;    }}