Question

我是Java和Android Studio的新手，因为我主要在Xamarin下工作我正在实施一个语音识别项目（最初是在Xamarin中开发的，但现在无法用于谷歌某处推出的大延迟）试图使用新的（仍然是beta）云语音识别。我已经从here下载了一个样本并尝试使用它，但我遇到了一个奇怪的（对我而言）问题。 SpeechSettings对象使用ImmutableList来保存del default API范围，但是当ImmutableList add("something").build()尝试调用checkNotNull函数时，我遇到了很多错误。我已经从SpeechSettings对象创建中提取了列表的创建，并且为了简单起见，我将它放在了Button的点击事件上。创建（或更好地，插入String元素）会导致相同的错误列表。这是点击监听器的代码：

bRecon.setOnClickListener(new View.OnClickListener()
{
    @Override
    public void onClick(View v)
    {
        try
        {
            ImmutableList<String> lTest = ImmutableList.String>builder().add("132").build();
        }
        catch (Exception ilEx)
        {
        }

        SpeechRecon sr = new SpeechRecon();
    });
}

这是创建ImmutableList时的相对LogCat输出：

11-24 13:26:03.007 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Preconditions.checkNotNull, referenced from method com.google.common.collect.ImmutableList.copyOf
11-24 13:26:03.007 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve static method 26168: Lcom/google/common/base/Preconditions;.checkNotNull (Ljava/lang/Object;)Ljava/lang/Object;
11-24 13:26:03.007 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x71 at 0x0000
11-24 13:26:03.017 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Joiner.appendTo, referenced from method com.google.common.collect.ImmutableCollection.toString
11-24 13:26:03.017 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve virtual method 26143: Lcom/google/common/base/Joiner;.appendTo (Ljava/lang/StringBuilder;Ljava/lang/Iterable;)Ljava/lang/StringBuilder;
11-24 13:26:03.017 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x6e at 0x0013
11-24 13:26:03.022 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Preconditions.checkNotNull, referenced from method com.google.common.collect.ImmutableList$Builder.add
11-24 13:26:03.022 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve static method 26168: Lcom/google/common/base/Preconditions;.checkNotNull (Ljava/lang/Object;)Ljava/lang/Object;
11-24 13:26:03.022 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x71 at 0x0002
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Preconditions.checkArgument, referenced from method com.google.common.collect.Lists.computeArrayListCapacity
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve static method 26164: Lcom/google/common/base/Preconditions;.checkArgument (Z)V
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x71 at 0x0003
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Preconditions.checkNotNull, referenced from method com.google.common.collect.Lists.newArrayList
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve static method 26168: Lcom/google/common/base/Preconditions;.checkNotNull (Ljava/lang/Object;)Ljava/lang/Object;
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x71 at 0x0000
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Preconditions.checkNotNull, referenced from method com.google.common.collect.Lists.newArrayList
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve static method 26168: Lcom/google/common/base/Preconditions;.checkNotNull (Ljava/lang/Object;)Ljava/lang/Object;
11-24 13:26:03.027 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x71 at 0x0000
11-24 13:26:03.032 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Preconditions.checkNotNull, referenced from method com.google.common.collect.Lists.newArrayList
11-24 13:26:03.032 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve static method 26168: Lcom/google/common/base/Preconditions;.checkNotNull (Ljava/lang/Object;)Ljava/lang/Object;
11-24 13:26:03.032 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x71 at 0x0000
11-24 13:26:03.032 31057-31057/it.sia.cloudspeechrpcjava I/dalvikvm: Could not find method com.google.common.base.Preconditions.checkNotNull, referenced from method com.google.common.collect.Lists.partition
11-24 13:26:03.032 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to resolve static method 26168: Lcom/google/common/base/Preconditions;.checkNotNull (Ljava/lang/Object;)Ljava/lang/Object;
11-24 13:26:03.032 31057-31057/it.sia.cloudspeechrpcjava D/dalvikvm: VFY: replacing opcode 0x71 at 0x0000
11-24 13:26:03.037 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to find class referenced in signature (Lcom/google/common/base/Function;)
11-24 13:26:03.037 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to find class referenced in signature (Lcom/google/common/base/Function;)
11-24 13:26:03.042 31057-31057/it.sia.cloudspeechrpcjava W/dalvikvm: VFY: unable to find class referenced in signature (Lcom/google/common/base/Function;)

这是我的gradle.build文件：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.0"
    defaultConfig {
        applicationId "it.sia.cloudspeechrpcjava"
        minSdkVersion 19
        targetSdkVersion 19
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    packagingOptions {
        pickFirst 'META-INF/io.netty.versions.properties'
        exclude 'META-INF/INDEX.LIST'
    }
}

dependencies {
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2',
            {
                exclude group: 'com.android.support', module: 'support-annotations'
            })
    androidTestCompile 'com.google.code.findbugs:jsr305:3.0.0'
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:25.0.1'

    compile files('libs/guava-gwt-20.0.jar')
    compile files('libs/guava-collections-r03.jar')
    compile files('libs/gax-0.0.25.jar')
    compile files('libs/grpc-all-1.0.1.jar')
    compile files('libs/grpc-core-1.0.1.jar')
    compile files('libs/grpc-core-proto-0.0.6.jar')
    compile files('libs/grpc-google-cloud-speech-v1beta1-0.1.3.jar')
    compile files('libs/joda-time-2.9.6.jar')
    compile files('libs/protobuf-java-3.1.0.jar')
}

如果你们中的任何一个人能指出我可能的解决方案，那就太好了。谢谢。鲁道夫。

Answer 1

guava-primitives“Guava-Collections”已更新6年，并且取决于您尚未下载和包含的其他几个库。

Preconditions被描述为“包含实用程序类的库”，因此它可能包含缺少的guava-collections类。

将guava替换为最新版本的{{1}}（20.0），它可能会有效。我还建议学习自动依赖关系管理，因为手动下载库并确保这些库的依赖关系会很快变得非常混乱。

没有找到Guava ImmutableList静态函数checkNotNull

1 个答案: