Question

我按照此示例：https://github.com/bumptech/glide/tree/master/samples/svg/src/main/java/com/bumptech/glide/samples/svg

使用Glide 4.0.0-RC0成功加载SVG文件后，我想为ImageView设置色调颜色，但是setColorFilter NOT WORKING

我的来源：

package com.example.quangson.glidesvg;

import static com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions.withCrossFade;

import android.content.ContentResolver;
import android.graphics.PorterDuff;
import android.graphics.drawable.PictureDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;
import com.bumptech.glide.RequestBuilder;
import com.example.quangson.glidesvg.glide.GlideApp;
import com.example.quangson.glidesvg.glide.SvgSoftwareLayerSetter;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "SVGActivity";
    private ImageView imageViewSVG;
    private ImageView imageViewPNG;
    private RequestBuilder<PictureDrawable> requestBuilder;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        imageViewSVG = (ImageView) findViewById(R.id.svg_image_view1);
        imageViewPNG = (ImageView) findViewById(R.id.svg_image_view2);

        imageViewPNG.setImageResource(R.drawable.image_mylogo);

        requestBuilder = GlideApp.with(this)
                .as(PictureDrawable.class)
                .error(R.drawable.image_error)
                .transition(withCrossFade())
                .listener(new SvgSoftwareLayerSetter());
        Uri uri = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + getPackageName() + "/"  + R.raw.android_toy_h);
        requestBuilder.load(uri).into(imageViewSVG);

        imageViewSVG.setColorFilter(getResources().getColor(R.color.colorAccent), PorterDuff.Mode.SRC_IN);
        imageViewPNG.setColorFilter(getResources().getColor(R.color.colorAccent), PorterDuff.Mode.SRC_IN);
    }
}

在我的来源：

我将PNG图像（从res / drawable）加载到imageViewPNG和setColorFilter forimageViewPNG⇒WORKING

我将SVG图像（从res / raw）加载到imageViewSVG和setColorFilter forimageViewSVG⇒NOTINGING（已成功加载SVG文件但不能设置setColorFilter）

请帮我设置imageViewSVG的色调。

我尝试编辑下面的代码来制作一个生成BitmapDrawable的SvgDrawableTranscoder（之后会设置setColorFilter），但它不起作用，帮帮我吗？

package com.sonzero.chibiz.glide;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Picture;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.PictureDrawable;

import com.bumptech.glide.load.engine.Resource;
import com.bumptech.glide.load.resource.SimpleResource;
import com.bumptech.glide.load.resource.transcode.ResourceTranscoder;
import com.caverock.androidsvg.SVG;

/**
 * Convert the {@link SVG}'s internal representation to an Android-compatible one
 * ({@link Picture}).
 */
public class SvgDrawableTranscoder implements ResourceTranscoder<SVG, BitmapDrawable> {
    @Override
    public Resource<BitmapDrawable> transcode(Resource<SVG> toTranscode) {
        SVG svg = toTranscode.get();
        Picture picture = svg.renderToPicture();
        PictureDrawable drawable = new PictureDrawable(picture);
        Bitmap bitmap = asBitmap(drawable);
        BitmapDrawable mDrawable = new BitmapDrawable(bitmap);
        return new SimpleResource<BitmapDrawable>(mDrawable);
    }

    public Bitmap asBitmap(PictureDrawable pd) {
        Bitmap bitmap = Bitmap.createBitmap(pd.getIntrinsicWidth(),pd.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        canvas.drawPicture(pd.getPicture());
        return bitmap;
    }
}

Answer 1

Glide SVG加载程序生成PictureDrawable。最后我查了一下，PictureDrawables不支持setColorFilter()方法。

您可以尝试制作自己的SvgDrawableTranscoder版本，而不是生成BitmapDrawable，并使用AndroidSVG的renderToCanvas()方法进行绘制。

Answer 2

这里我的方法工作正常

Step-1 使用 glide 将 svg 设置为 imageView（在我的例子中 it.menuItemIcon 是 ImageView 对象）

  Glide.with(it.context).`as`(PictureDrawable::class.java).load(itemData.imageURL)
                .addListener(object: RequestListener<PictureDrawable> {
                    override fun onLoadFailed(
                        e: GlideException?,
                        model: Any?,
                        target: Target<PictureDrawable>?,
                        isFirstResource: Boolean
                    ): Boolean {
                        it.menuItemIcon.visibility = View.INVISIBLE
                        return false
                    }

                    override fun onResourceReady(
                        resource: PictureDrawable?,
                        model: Any?,
                        target: Target<PictureDrawable>?,
                        dataSource: DataSource?,
                        isFirstResource: Boolean
                    ): Boolean {
                        it.menuItemIcon.visibility = View.VISIBLE
                        return false
                    }

                })
                .addListener(SvgSoftwareLayerListener()).into(it.menuItemIcon)

Step-2 现在点击按钮调用这两个方法

if(it.menuItemIcon.drawable!=null){
                          val bitmap = getBitMap(it.menuItemIcon)
                          setBitmapAndTint(bitmap,holder.itemView.context,it.menuItemIcon,itemData.isSelected)
                      }

Step-3 实现 getBitMap() 从 ImageView 对象获取 Bitmap

 private fun getBitMap(view: AppCompatImageView): Bitmap {
    val returnedBitmap = Bitmap.createBitmap(view.width, view.height, Bitmap.Config.ARGB_8888)
    val canvas = Canvas(returnedBitmap)
    val bgDrawable: Drawable = view.drawable
    bgDrawable.draw(canvas)
    view.draw(canvas)
    return returnedBitmap
}

Step-4 现在实现 setBitmapAndTint() 在 imageView 中设置位图和 colorFilter(Tint)

 private fun setBitmapAndTint(bitmap: Bitmap, context: Context, menuItemIcon: AppCompatImageView, selected: Boolean) {
    menuItemIcon.setImageBitmap(bitmap)
    menuItemIcon.setColorFilter(ContextCompat.getColor(context,R.color.ColorBlack))
}

Android - Glide 4.0.0-RC0：成功加载SVG后如何为ImageView设置色调颜色

2 个答案: