android 圆角图片的实现形式

- 日理万妓 2022-09-25 10:19 238阅读 0赞

android 圆角图片的实现形式，包括用第三方、也有系统的。比如makeramen:roundedimageview，系统的cardview ， glide .fresco 。

![这里写图片描述][20160819134250608]

compile 'com.android.support:appcompat-v7:24.0.0'
        compile 'com.makeramen:roundedimageview:2.2.1'
        compile 'com.android.support:cardview-v7:24.0.0'
        compile 'com.github.bumptech.glide:glide:3.7.0'
        compile 'com.facebook.fresco:fresco:0.12.0'

<android.support.v7.widget.CardView
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/id_cardview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        app:cardBackgroundColor="@color/bg_light_gray"
        app:cardCornerRadius="3dp"
        app:cardUseCompatPadding="false"
        app:cardPreventCornerOverlap="true"
    
        >
        <ImageView
            android:id="@+id/iv_subject"
            android:gravity="center"
            android:scaleType="centerCrop"
            android:layout_width="match_parent"
            android:layout_height="200dp" />
    
        <TextView
            android:paddingLeft="5dp"
            android:paddingBottom="5dp"
            android:background="@drawable/bg_biaoti"
            android:id="@+id/tv_subject"
            android:gravity="center_vertical"
            android:text=""
            android:ellipsize="end"
            android:singleLine="true"
            android:textSize="13sp"
            android:textColor="@color/white"
            android:layout_gravity="bottom"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    
    </android.support.v7.widget.CardView>

iv_round=(RoundedImageView) findViewById(R.id.iv_round);
     Glide.with(this).load(url).into(iv_round);

iv_cardview=(ImageView)findViewById(R.id.iv_cardview);
       Glide.with(this).load(url).into(iv_cardview);

iv_fresco=(SimpleDraweeView)findViewById(R.id.iv_fresco);
            Glide.with(this).load(url).into(iv_round);
            Glide.with(this).load(url).into(iv_cardview);
            Uri uri = Uri.parse(url);
            iv_fresco.setImageURI(uri);

package roundimageview.forezp.com.roundimageview;
    
    import android.content.Context;
    import android.content.res.Resources;
    import android.graphics.Bitmap;
    import android.graphics.BitmapShader;
    import android.graphics.Canvas;
    import android.graphics.Paint;
    import android.graphics.RectF;
    
    import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
    import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
    
    /** * Created by Administrator on 2016/8/19 0019. */
    public class GlideRoundTransform extends BitmapTransformation { 
    
        private static float radius = 0f;
    
        public GlideRoundTransform(Context context) {
            this(context, 4);
        }
    
        public GlideRoundTransform(Context context, int dp) {
            super(context);
            this.radius = Resources.getSystem().getDisplayMetrics().density * dp;
        }
    
        @Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
            return roundCrop(pool, toTransform);
        }
    
        private static Bitmap roundCrop(BitmapPool pool, Bitmap source) {
            if (source == null) return null;
    
            Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
            if (result == null) {
                result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
            }
    
            Canvas canvas = new Canvas(result);
            Paint paint = new Paint();
            paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
            paint.setAntiAlias(true);
            RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
            canvas.drawRoundRect(rectF, radius, radius, paint);
            return result;
        }
    
        @Override public String getId() {
            return getClass().getName() + Math.round(radius);
        }
    }

Glide.with(this).load(url).transform(new GlideRoundTransform(this,6)).into(iv_glide);

[20160819134250608]: /images/20220718/4ce73c201af64c59b965948a4fde6f07.png