如果不支持，则在文本中显示Toast语音-Java 学习之路

在Fragement中添加Toast to TTS按钮时，我收到此错误 "Cannot resolve method 'getApplicationContext()" 即使我尝试 getActivty() . 和 getContext() . ，然后出现更多的错误，这是祝酒词：

Toast.makeText(getApplicationContext(), "Not Supported", Toast.LENGTH_SHORT).show();

这是fragement代码：

TextToSpeech toSpeech;
    int result;
    EditText editText;
    String text;


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_home, container, false);


        editText = v.findViewById(R.id.editText);

        toSpeech = new TextToSpeech(HomeFragment.this, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if (status == TextToSpeech.SUCCESS) {
                    Locale locale = new Locale("tr-TR");
                    int result = toSpeech.setLanguage(locale);
                } else {
                    Toast.makeText(getApplicationContext(), "Not Supported", Toast.LENGTH_SHORT).show(); 
                }
            }
        });


        return v;
    }

    public void TTS(View view) {
        switch (view.getId()) {
            case R.id.bplay:
                if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                } else {
                    text = editText.getText().toString();
                    toSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null);
                    toSpeech.setSpeechRate((float) 0.8);
                    toSpeech.setPitch((float) 0.7);

                }
                break;
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (toSpeech != null) ;
        {
            assert toSpeech != null;
            toSpeech.stop();
            toSpeech.shutdown();
        }

    }

}

2 回答

新TextToSpeech（HomeFragment.this

你应该使用getActivity() .

返回此片段当前与之关联的FragmentActivity .

Toast.makeText(getActivity(), "Not Supported", Toast.LENGTH_SHORT).show(); 
new TextToSpeech(getActivity()

Finally

toSpeech = new TextToSpeech(getActivity(), new TextToSpeech.OnInitListener() {
        @Override
        public void onInit(int status) {
            if (status == TextToSpeech.SUCCESS) {
                Locale locale = new Locale("tr-TR");
                int result = toSpeech.setLanguage(locale);
            } else {
                Toast.makeText(getActivity(), "Not Supported", Toast.LENGTH_SHORT).show(); 
            }
        }
    });

回复于 2024-04-30T07:13:37+08:00

首先，

在你的代码中，你给出了 HomeFragment.this ，这在片段中是不合适的 .

toSpeech = new TextToSpeech(**HomeFragment.this**, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if (status == TextToSpeech.SUCCESS) {
                    Locale locale = new Locale("tr-TR");
                    int result = toSpeech.setLanguage(locale);
                } else {
                    Toast.makeText(getApplicationContext(), "Not Supported", Toast.LENGTH_SHORT).show(); 
                }
            }
        });

您需要更改 HomeFragment.this with getActivity() 并在代码中更改 getApplicationContext() with getActivity() ，如下所示： -

toSpeech = new TextToSpeech(getActivity(), new TextToSpeech.OnInitListener() {
                @Override
                public void onInit(int status) {
                    if (status == TextToSpeech.SUCCESS) {
                        Locale locale = new Locale("tr-TR");
                        int result = toSpeech.setLanguage(locale);
                    } else {
                        Toast.makeText(getActivity(), "Not Supported", Toast.LENGTH_SHORT).show(); 
                    }
                }
            });

第二选择

如果使用getActivity（）仍然无法正常使用Toast，那么您也可以尝试

getActivity().getBaseContext();

如下： -

Toast.makeText(getActivity().getBaseContext(), "Not Supported", Toast.LENGTH_SHORT).show();

回复于 2024-04-30T07:13:37+08:00

如果不支持，则在文本中显示Toast语音

2 回答

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