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グライドライブラリを使用してぼかし画像を表示する

Glideを使用してぼかし画像を表示しようとしていますが、代わりにエラー画像を表示しています。なぜエラー画像を表示するのかわかりません。[〜＃〜] url [〜＃〜]正常に動作していますが、それでもエラー画像のみが表示されています

これが私のコードです

 Glide.with(context)
                .load("http://www.gadgetsaint.com/wp-content/uploads/2016/11/cropped-web_hi_res_512.png")
                .diskCacheStrategy(DiskCacheStrategy.NONE)
                .bitmapTransform(new BlurTransformation(context))
                .error(R.drawable.error_image)
                .into(imageView);

BlurTransformationクラス：

public class BlurTransformation extends BitmapTransformation {

private RenderScript rs;

public BlurTransformation(Context context) {
    super(context);

    rs = RenderScript.create(context);
}

@SuppressLint("NewApi")
@Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
    Bitmap blurredBitmap = toTransform.copy(Bitmap.Config.ARGB_8888, true);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(
            rs,
            blurredBitmap,
            Allocation.MipmapControl.MIPMAP_FULL,
            Allocation.USAGE_SHARED
    );
    Allocation output = Allocation.createTyped(rs, input.getType());

    // Load up an instance of the specific script that we want to use.
    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setInput(input);

    // Set the blur radius
    script.setRadius(100);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    toTransform.recycle();

    return blurredBitmap;
}

@Override
public String getId() {
    return "blur";
}
}
androidandroid-glide
3
user10299469

グライドV3の場合、

 Glide.with(context).load(imagePath).transform(new BlurTransformation(context))
                                        .into(imageView);

このクラスをぼかし変換に使用しています

public class BlurTransformation extends BitmapTransformation {

private RenderScript rs;

public BlurTransformation(Context context) {
    super( context );

    rs = RenderScript.create( context );
}

@Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
    Bitmap blurredBitmap = toTransform.copy( Bitmap.Config.ARGB_8888, true );

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(
        rs, 
        blurredBitmap, 
        Allocation.MipmapControl.MIPMAP_FULL, 
        Allocation.USAGE_SHARED
    );
    Allocation output = Allocation.createTyped(rs, input.getType());

    // Load up an instance of the specific script that we want to use.
    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setInput(input);

    // Set the blur radius
    script.setRadius(10);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    toTransform.recycle();

    return blurredBitmap;
}

@Override
public String getId() {
    return "blur";
}

}

1
Rakesh Verma

たぶん誰かが役に立つでしょう、最新バージョン-ただグライド：

-アプリのgradleに追加：

implementation("com.github.bumptech.glide:glide:4.9.0") {
    exclude group: "com.Android.support"
}
kapt 'com.github.bumptech.glide:compiler:4.9.0'

-レイアウト内：

    <ImageView
    Android:id="@+id/ivBlurred"
    Android:layout_width="match_parent"
    Android:layout_height="match_parent"
    Android:scaleType="centerCrop"
    tools:ignore="ContentDescription" />

-クラスでは、画像を追加します。

 Glide.with(context)
            .asBitmap()
            .load(R.drawable.temp_full_screen_image) // or url
            .transform(BlurTransformation(context))
            .into(ivBlurred)

-そして最後に：

import Android.content.Context
import Android.graphics.Bitmap
import Android.graphics.Canvas
import Android.graphics.Color
import Android.graphics.Paint
import Android.renderscript.*
import Android.renderscript.RenderScript.RSMessageHandler
import androidx.annotation.ColorInt
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool
import com.bumptech.glide.load.resource.bitmap.BitmapResource
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation
import Java.security.MessageDigest

private const val DEFAULT_DOWN_SAMPLING = 0.5f

class BlurTransformation(private val context: Context) : BitmapTransformation() {

    override fun transform(pool: BitmapPool, toTransform: Bitmap, outWidth: Int, outHeight: Int): Bitmap? {
        val source: Bitmap = toTransform
        val scaledWidth = (source.width * DEFAULT_DOWN_SAMPLING).toInt()
        val scaledHeight = (source.height * DEFAULT_DOWN_SAMPLING).toInt()
        val bitmap = pool[scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888]
        return BitmapResource.obtain(this.blurBitmap(context, source, bitmap, Color.argb(90, 255, 255, 255)), pool)?.get()
    }

    override fun updateDiskCacheKey(messageDigest: MessageDigest) {
        messageDigest.update("blur transformation".toByteArray())
    }

    @Synchronized
    fun blurBitmap(context: Context, source: Bitmap?, bitmap: Bitmap, @ColorInt colorOverlay: Int): Bitmap? {
        if (source == null) return bitmap
        Canvas(bitmap).apply {
            scale(DEFAULT_DOWN_SAMPLING, DEFAULT_DOWN_SAMPLING)
            drawBitmap(source, 0f, 0f, Paint().apply {
                flags = Paint.FILTER_BITMAP_FLAG
            })
            drawColor(colorOverlay)
        }
        return try {
            blur(context, bitmap)
        } catch (e: RSRuntimeException) {
            e.printStackTrace()
            bitmap
        }
    }

    @Throws(RSRuntimeException::class)
    private fun blur(context: Context, bitmap: Bitmap): Bitmap {
        var rs: RenderScript? = null
        var input: Allocation? = null
        var output: Allocation? = null
        var blur: ScriptIntrinsicBlur? = null
        try {
            rs = RenderScript.create(context)
            rs.messageHandler = RSMessageHandler()
            input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT)
            output = Allocation.createTyped(rs, input.type)
            blur = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs)).apply {
                setInput(input)
                setRadius(25f)
                forEach(output)
            }
            output.copyTo(bitmap)
        } finally {
            rs?.destroy()
            input?.destroy()
            output?.destroy()
            blur?.destroy()
        }
        return bitmap
    }
}
1
Vladyslav Ulianytskyi