该问题通常是由于缺少Cwebp和Dwebp转码工具导致的。解决此问题的方法是将cwebp和dwebp和相应的库文件（libwebp_android.so）添加到项目的assets目录下，并将它们解压缩到临时目录。可在app module 的 build.gradle 文件中添加如下代码：

android{ ... aaptOptions { noCompress "webp" } }

dependencies{ implementation 'com.google.android.gms:play-services-ads:18.3.0' }

tasks.register("copyStaticAssets"){ // if you don't use kotlin ;) // doLast {

doLast {
    from(projectDir.absolutePath + "/src/main/webp")
    into("${buildDir.absolutePath}/intermediates/cwebp_tmp")

    // just in case it never existed before
    mkdir("${buildDir.absolutePath}/intermediates/cwebp_tmp"){

    }

    // PNG files are converted by default
    // but you can use other extensions
    // like ".jpg"
    eachFile { file ->

        // the option remove(1) is because
        // the extension comes with a dot
        def imgName = file.nameWithoutExtension.remove(1)

        def tmpDir = file.parent

        exec {
            // here's the important thing
            // the tool can be get here
            commandLine 'cp', "${projectDir}/src/main/webp/cwebp", "${tmpDir}"
            commandLine 'cp', "${projectDir}/src/main/webp/dwebp", "${tmpDir}"
            // the command's 'WEBP_IMAGE_HERE' is the
            // path where the new webp image will be placed
            commandLine "${tmpDir}/cwebp", file.absolutePath, '-o', "${tmpDir}/${imgName}.webp"
        }

    }

}

}

在代码中，我们在项目的build.gradle文件中使用了aaptOptions来防止元素中的Webp文件压缩。此外，我们还添加