Error: Could not execute method for android:onClick

Question

我在 Google documentation page 上找到了这段代码（Android Studio 稍微自动更改了它）：

@RequiresApi(api = Build.VERSION_CODES.KITKAT)
public static void ssmlToAudio(String ssmlText, String outFile) throws Exception {
    // Instantiates a client
    try (TextToSpeechClient textToSpeechClient = TextToSpeechClient.create()) {
        // Set the ssml text input to synthesize
        SynthesisInput input = SynthesisInput.newBuilder().setSsml(ssmlText).build();

        // Build the voice request, select the language code ("en-US") and
        // the ssml voice gender ("male")
        VoiceSelectionParams voice =
                VoiceSelectionParams.newBuilder()
                        .setLanguageCode("en-US")
                        .setSsmlGender(SsmlVoiceGender.MALE)
                        .build();

        // Select the audio file type
        AudioConfig audioConfig =
                AudioConfig.newBuilder().setAudioEncoding(AudioEncoding.MP3).build();

        // Perform the text-to-speech request on the text input with the selected voice parameters and
        // audio file type
        SynthesizeSpeechResponse response =
                textToSpeechClient.synthesizeSpeech(input, voice, audioConfig);

        // Get the audio contents from the response
        ByteString audioContents = response.getAudioContent();

        // Write the response to the output file
        try (OutputStream out = new FileOutputStream(outFile)) {
            out.write(audioContents.toByteArray());
            System.out.println("Audio content written to file " + outFile);
        }
    }
}

我想 运行 在单击事件上使用此方法。所以这就是我到目前为止所尝试的：

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public void onClick(View view) throws Exception {
    ssmlToAudio("Hello", "test");
}

但是如果我 运行 我的应用程序并点击一个按钮，我会得到这个错误：

java.lang.IllegalStateException: Could not execute method for android:onClick

我做错了什么？

Answer 1

您必须在 activity 中实现 onClickListener，然后覆盖 onClick 方法。