Question

大家好

我一直在环顾四周，但似乎找不到合适的答案来集成到我的函数中。我目前基本上使用以下代码：

<input type="text" class="form-list-item-name" [size]="myInput.value.length" #myInput>

此代码可以正常工作，但是它太大声，并且只能由设备本身的音量控制。我希望能够调整/硬编码/能够使用微调器来控制TTS的音量，但似乎无法相应地进行控制。

此库可使用此功能吗？可以实现吗？
我还尝试在代码中实现以下内容：

@media (min-width: 600px) {
  .navbar-dark .navbar-brand {
    color: #fff;
  }

  .navbar-dark .navbar-brand:hover, .navbar-dark .navbar-brand:focus {
    color: #fff;
  }

  .navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.5);
  }

  .navbar-dark .navbar-nav .nav-link:hover, .navbar-dark .navbar-nav .nav-link:focus {
    color: rgba(255, 255, 255, 0.75);
  }

  .navbar-dark .navbar-nav .nav-link.disabled {
    color: rgba(255, 255, 255, 0.25);
  }

  .navbar-dark .navbar-nav .show > .nav-link,
  .navbar-dark .navbar-nav .active > .nav-link,
  .navbar-dark .navbar-nav .nav-link.show,
  .navbar-dark .navbar-nav .nav-link.active {
    color: #fff;
  }

  .navbar-dark .navbar-toggler {
    color: rgba(255, 255, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.1);
  }

  .navbar-dark .navbar-toggler-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255, 255, 255, 0.5)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
  }

  .navbar-dark .navbar-text {
    color: rgba(255, 255, 255, 0.5);
  }

  .navbar-dark .navbar-text a {
    color: #fff;
  }

  .navbar-dark .navbar-text a:hover, .navbar-dark .navbar-text a:focus {
    color: #fff;
  }
}

但是，我看不到任何正在使用的示例，并且显示了创建函数的错误。有什么建议吗？

Answer 1

public class MainActivity extends AppCompatActivity {

    int androidAPILevel = android.os.Build.VERSION.SDK_INT;
    TextToSpeech tts;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tts = new TextToSpeech(this, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int i) {
                start();
            }
        });
    }

    private void start() {
        if (androidAPILevel < 21) {
            HashMap<String,String> params = new HashMap<>();
            params.put(TextToSpeech.Engine.KEY_PARAM_VOLUME, "0.5"); // change the 0.5 to any value from 0-1 (1 is default)
            tts.speak("This is a volume test.", TextToSpeech.QUEUE_FLUSH, params);
        } else { // android API level is 21 or higher...
            Bundle params = new Bundle();
            params.putFloat(TextToSpeech.Engine.KEY_PARAM_VOLUME, 0.5f); // change the 0.5f to any value from 0f-1f (1f is default)
            tts.speak("This is a volume test.", TextToSpeech.QUEUE_FLUSH, params, null);
        }
    }
}

在TextToSpeech函数调用上控制音量

1 个答案: